./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem14_label23_true-unreach-call_false-termination.c --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_69266e3f-11a7-4332-973f-b97a7bd9ad1d/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_69266e3f-11a7-4332-973f-b97a7bd9ad1d/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_69266e3f-11a7-4332-973f-b97a7bd9ad1d/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_69266e3f-11a7-4332-973f-b97a7bd9ad1d/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem14_label23_true-unreach-call_false-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_69266e3f-11a7-4332-973f-b97a7bd9ad1d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_69266e3f-11a7-4332-973f-b97a7bd9ad1d/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 e2b1b3074ba1970495a934bff93d8ae3ffe89d9a ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 09:56:46,138 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 09:56:46,139 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 09:56:46,147 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 09:56:46,147 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 09:56:46,148 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 09:56:46,149 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 09:56:46,150 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 09:56:46,151 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 09:56:46,151 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 09:56:46,152 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 09:56:46,152 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 09:56:46,153 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 09:56:46,153 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 09:56:46,154 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 09:56:46,155 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 09:56:46,155 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 09:56:46,157 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 09:56:46,158 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 09:56:46,159 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 09:56:46,160 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 09:56:46,160 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 09:56:46,162 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 09:56:46,162 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 09:56:46,162 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 09:56:46,163 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 09:56:46,163 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 09:56:46,164 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 09:56:46,165 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 09:56:46,165 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 09:56:46,165 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 09:56:46,166 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 09:56:46,166 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 09:56:46,166 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 09:56:46,167 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 09:56:46,167 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 09:56:46,167 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_69266e3f-11a7-4332-973f-b97a7bd9ad1d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-23 09:56:46,177 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 09:56:46,177 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 09:56:46,178 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 09:56:46,178 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 09:56:46,178 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 09:56:46,178 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 09:56:46,178 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 09:56:46,178 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-23 09:56:46,178 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 09:56:46,179 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 09:56:46,179 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-23 09:56:46,179 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-23 09:56:46,179 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 09:56:46,180 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 09:56:46,180 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 09:56:46,180 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 09:56:46,180 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 09:56:46,180 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 09:56:46,180 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 09:56:46,180 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 09:56:46,180 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 09:56:46,181 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 09:56:46,181 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 09:56:46,181 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 09:56:46,181 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 09:56:46,181 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 09:56:46,181 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 09:56:46,181 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 09:56:46,181 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 09:56:46,182 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 09:56:46,182 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 09:56:46,182 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 09:56:46,182 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 09:56:46,182 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-23 09:56:46,182 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 09:56:46,182 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 09:56:46,182 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 09:56:46,183 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_69266e3f-11a7-4332-973f-b97a7bd9ad1d/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 -> e2b1b3074ba1970495a934bff93d8ae3ffe89d9a [2018-11-23 09:56:46,205 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 09:56:46,214 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 09:56:46,216 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 09:56:46,217 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 09:56:46,218 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 09:56:46,218 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_69266e3f-11a7-4332-973f-b97a7bd9ad1d/bin-2019/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem14_label23_true-unreach-call_false-termination.c [2018-11-23 09:56:46,263 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_69266e3f-11a7-4332-973f-b97a7bd9ad1d/bin-2019/utaipan/data/2c49f74bd/e2634a78031940e6984697a5df542098/FLAG5bcee1ceb [2018-11-23 09:56:46,640 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 09:56:46,641 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_69266e3f-11a7-4332-973f-b97a7bd9ad1d/sv-benchmarks/c/eca-rers2012/Problem14_label23_true-unreach-call_false-termination.c [2018-11-23 09:56:46,650 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_69266e3f-11a7-4332-973f-b97a7bd9ad1d/bin-2019/utaipan/data/2c49f74bd/e2634a78031940e6984697a5df542098/FLAG5bcee1ceb [2018-11-23 09:56:47,018 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_69266e3f-11a7-4332-973f-b97a7bd9ad1d/bin-2019/utaipan/data/2c49f74bd/e2634a78031940e6984697a5df542098 [2018-11-23 09:56:47,020 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 09:56:47,021 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 09:56:47,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 09:56:47,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 09:56:47,025 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 09:56:47,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:56:47" (1/1) ... [2018-11-23 09:56:47,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a315a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:47, skipping insertion in model container [2018-11-23 09:56:47,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:56:47" (1/1) ... [2018-11-23 09:56:47,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 09:56:47,073 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 09:56:47,339 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 09:56:47,342 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 09:56:47,426 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 09:56:47,435 INFO L195 MainTranslator]: Completed translation [2018-11-23 09:56:47,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:47 WrapperNode [2018-11-23 09:56:47,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 09:56:47,436 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 09:56:47,436 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 09:56:47,436 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 09:56:47,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:47" (1/1) ... [2018-11-23 09:56:47,513 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:47" (1/1) ... [2018-11-23 09:56:47,519 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 09:56:47,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 09:56:47,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 09:56:47,520 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 09:56:47,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:47" (1/1) ... [2018-11-23 09:56:47,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:47" (1/1) ... [2018-11-23 09:56:47,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:47" (1/1) ... [2018-11-23 09:56:47,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:47" (1/1) ... [2018-11-23 09:56:47,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:47" (1/1) ... [2018-11-23 09:56:47,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:47" (1/1) ... [2018-11-23 09:56:47,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:47" (1/1) ... [2018-11-23 09:56:47,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 09:56:47,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 09:56:47,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 09:56:47,568 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 09:56:47,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_69266e3f-11a7-4332-973f-b97a7bd9ad1d/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 [2018-11-23 09:56:47,602 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-23 09:56:47,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 09:56:47,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 09:56:47,602 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-23 09:56:47,602 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-23 09:56:47,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 09:56:47,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 09:56:47,603 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 09:56:47,603 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 09:56:48,615 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 09:56:48,615 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-23 09:56:48,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:56:48 BoogieIcfgContainer [2018-11-23 09:56:48,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 09:56:48,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 09:56:48,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 09:56:48,618 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 09:56:48,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:56:47" (1/3) ... [2018-11-23 09:56:48,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466fb718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:56:48, skipping insertion in model container [2018-11-23 09:56:48,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:47" (2/3) ... [2018-11-23 09:56:48,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466fb718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:56:48, skipping insertion in model container [2018-11-23 09:56:48,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:56:48" (3/3) ... [2018-11-23 09:56:48,621 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label23_true-unreach-call_false-termination.c [2018-11-23 09:56:48,627 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 09:56:48,633 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 09:56:48,643 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 09:56:48,666 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 09:56:48,666 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 09:56:48,666 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 09:56:48,666 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 09:56:48,666 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 09:56:48,667 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 09:56:48,667 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 09:56:48,667 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 09:56:48,684 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states. [2018-11-23 09:56:48,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-23 09:56:48,690 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:56:48,690 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, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 09:56:48,692 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:56:48,696 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:56:48,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1582887541, now seen corresponding path program 1 times [2018-11-23 09:56:48,698 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 09:56:48,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:56:48,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:56:48,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:56:48,729 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 09:56:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:56:48,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 09:56:48,896 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 09:56:48,896 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 09:56:48,897 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 09:56:48,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 09:56:48,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 09:56:48,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 09:56:48,910 INFO L87 Difference]: Start difference. First operand 254 states. Second operand 3 states. [2018-11-23 09:56:49,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:56:49,768 INFO L93 Difference]: Finished difference Result 688 states and 1223 transitions. [2018-11-23 09:56:49,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 09:56:49,769 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2018-11-23 09:56:49,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:56:49,781 INFO L225 Difference]: With dead ends: 688 [2018-11-23 09:56:49,781 INFO L226 Difference]: Without dead ends: 432 [2018-11-23 09:56:49,785 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 09:56:49,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2018-11-23 09:56:49,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 432. [2018-11-23 09:56:49,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2018-11-23 09:56:49,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 763 transitions. [2018-11-23 09:56:49,839 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 763 transitions. Word has length 38 [2018-11-23 09:56:49,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:56:49,839 INFO L480 AbstractCegarLoop]: Abstraction has 432 states and 763 transitions. [2018-11-23 09:56:49,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 09:56:49,839 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 763 transitions. [2018-11-23 09:56:49,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-11-23 09:56:49,843 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:56:49,843 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 09:56:49,843 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:56:49,843 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:56:49,844 INFO L82 PathProgramCache]: Analyzing trace with hash 980020742, now seen corresponding path program 1 times [2018-11-23 09:56:49,844 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 09:56:49,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:56:49,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:56:49,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:56:49,845 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 09:56:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:56:49,990 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 09:56:49,990 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 09:56:49,990 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-23 09:56:49,991 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 09:56:49,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 09:56:49,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 09:56:49,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-23 09:56:49,992 INFO L87 Difference]: Start difference. First operand 432 states and 763 transitions. Second operand 6 states. [2018-11-23 09:56:50,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:56:50,664 INFO L93 Difference]: Finished difference Result 1056 states and 1891 transitions. [2018-11-23 09:56:50,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 09:56:50,665 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2018-11-23 09:56:50,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:56:50,668 INFO L225 Difference]: With dead ends: 1056 [2018-11-23 09:56:50,668 INFO L226 Difference]: Without dead ends: 630 [2018-11-23 09:56:50,669 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-23 09:56:50,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2018-11-23 09:56:50,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 622. [2018-11-23 09:56:50,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2018-11-23 09:56:50,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 1016 transitions. [2018-11-23 09:56:50,695 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 1016 transitions. Word has length 112 [2018-11-23 09:56:50,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:56:50,695 INFO L480 AbstractCegarLoop]: Abstraction has 622 states and 1016 transitions. [2018-11-23 09:56:50,695 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 09:56:50,695 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 1016 transitions. [2018-11-23 09:56:50,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-11-23 09:56:50,697 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:56:50,697 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2018-11-23 09:56:50,697 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:56:50,698 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:56:50,698 INFO L82 PathProgramCache]: Analyzing trace with hash -111529671, now seen corresponding path program 1 times [2018-11-23 09:56:50,698 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 09:56:50,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:56:50,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:56:50,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:56:50,699 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 09:56:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:56:50,912 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 09:56:50,912 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 09:56:50,912 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-23 09:56:50,913 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 09:56:50,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 09:56:50,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 09:56:50,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-23 09:56:50,913 INFO L87 Difference]: Start difference. First operand 622 states and 1016 transitions. Second operand 6 states. [2018-11-23 09:56:52,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:56:52,364 INFO L93 Difference]: Finished difference Result 1810 states and 2979 transitions. [2018-11-23 09:56:52,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-23 09:56:52,365 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2018-11-23 09:56:52,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:56:52,372 INFO L225 Difference]: With dead ends: 1810 [2018-11-23 09:56:52,372 INFO L226 Difference]: Without dead ends: 1194 [2018-11-23 09:56:52,374 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-23 09:56:52,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2018-11-23 09:56:52,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1136. [2018-11-23 09:56:52,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1136 states. [2018-11-23 09:56:52,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1729 transitions. [2018-11-23 09:56:52,404 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1729 transitions. Word has length 121 [2018-11-23 09:56:52,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:56:52,404 INFO L480 AbstractCegarLoop]: Abstraction has 1136 states and 1729 transitions. [2018-11-23 09:56:52,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 09:56:52,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1729 transitions. [2018-11-23 09:56:52,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-11-23 09:56:52,408 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:56:52,408 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 09:56:52,408 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:56:52,408 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:56:52,408 INFO L82 PathProgramCache]: Analyzing trace with hash 494910482, now seen corresponding path program 1 times [2018-11-23 09:56:52,408 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 09:56:52,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:56:52,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:56:52,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:56:52,409 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 09:56:52,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:56:52,788 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 143 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 09:56:52,788 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:56:52,788 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 09:56:52,789 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 206 with the following transitions: [2018-11-23 09:56:52,790 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [554], [948], [952], [961], [965], [967], [972], [973], [974], [976], [977] [2018-11-23 09:56:52,821 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 09:56:52,821 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 09:56:53,162 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 09:56:53,163 INFO L272 AbstractInterpreter]: Visited 93 different actions 178 times. Merged at 3 different actions 3 times. Never widened. Performed 1478 root evaluator evaluations with a maximum evaluation depth of 3. Performed 1478 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-23 09:56:53,188 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:56:53,189 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 09:56:53,189 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:56:53,189 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_69266e3f-11a7-4332-973f-b97a7bd9ad1d/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 09:56:53,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:56:53,203 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 09:56:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:56:53,267 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 09:56:53,436 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 93 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 09:56:53,437 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 09:56:53,660 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 66 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 09:56:53,676 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 09:56:53,676 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 20 [2018-11-23 09:56:53,676 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 09:56:53,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-23 09:56:53,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-23 09:56:53,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2018-11-23 09:56:53,678 INFO L87 Difference]: Start difference. First operand 1136 states and 1729 transitions. Second operand 15 states. [2018-11-23 09:56:56,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:56:56,310 INFO L93 Difference]: Finished difference Result 3245 states and 4969 transitions. [2018-11-23 09:56:56,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-23 09:56:56,311 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 205 [2018-11-23 09:56:56,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:56:56,320 INFO L225 Difference]: With dead ends: 3245 [2018-11-23 09:56:56,320 INFO L226 Difference]: Without dead ends: 1918 [2018-11-23 09:56:56,325 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 402 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=327, Invalid=933, Unknown=0, NotChecked=0, Total=1260 [2018-11-23 09:56:56,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1918 states. [2018-11-23 09:56:56,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 1612. [2018-11-23 09:56:56,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1612 states. [2018-11-23 09:56:56,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2109 transitions. [2018-11-23 09:56:56,366 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2109 transitions. Word has length 205 [2018-11-23 09:56:56,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:56:56,366 INFO L480 AbstractCegarLoop]: Abstraction has 1612 states and 2109 transitions. [2018-11-23 09:56:56,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-23 09:56:56,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2109 transitions. [2018-11-23 09:56:56,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-11-23 09:56:56,370 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:56:56,371 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2018-11-23 09:56:56,372 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:56:56,372 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:56:56,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1312430241, now seen corresponding path program 1 times [2018-11-23 09:56:56,372 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 09:56:56,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:56:56,373 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:56:56,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:56:56,373 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 09:56:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:56:56,602 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 111 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 09:56:56,603 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:56:56,603 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 09:56:56,603 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 231 with the following transitions: [2018-11-23 09:56:56,603 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [948], [952], [961], [965], [967], [972], [973], [974], [976], [977] [2018-11-23 09:56:56,607 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 09:56:56,607 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 09:56:56,697 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-23 09:56:56,697 INFO L272 AbstractInterpreter]: Visited 114 different actions 114 times. Never merged. Never widened. Performed 1003 root evaluator evaluations with a maximum evaluation depth of 3. Performed 1003 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 24 variables. [2018-11-23 09:56:56,715 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:56:56,715 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-23 09:56:56,943 INFO L227 lantSequenceWeakener]: Weakened 221 states. On average, predicates are now at 77.69% of their original sizes. [2018-11-23 09:56:56,944 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-23 09:56:56,970 INFO L415 sIntCurrentIteration]: We unified 229 AI predicates to 229 [2018-11-23 09:56:56,971 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-23 09:56:56,971 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-23 09:56:56,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2018-11-23 09:56:56,971 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 09:56:56,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 09:56:56,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 09:56:56,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-23 09:56:56,972 INFO L87 Difference]: Start difference. First operand 1612 states and 2109 transitions. Second operand 6 states. [2018-11-23 09:57:06,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:57:06,127 INFO L93 Difference]: Finished difference Result 3401 states and 4408 transitions. [2018-11-23 09:57:06,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 09:57:06,127 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 230 [2018-11-23 09:57:06,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:57:06,134 INFO L225 Difference]: With dead ends: 3401 [2018-11-23 09:57:06,134 INFO L226 Difference]: Without dead ends: 1795 [2018-11-23 09:57:06,138 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 230 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-23 09:57:06,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1795 states. [2018-11-23 09:57:06,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1795 to 1794. [2018-11-23 09:57:06,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1794 states. [2018-11-23 09:57:06,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1794 states to 1794 states and 2293 transitions. [2018-11-23 09:57:06,180 INFO L78 Accepts]: Start accepts. Automaton has 1794 states and 2293 transitions. Word has length 230 [2018-11-23 09:57:06,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:57:06,180 INFO L480 AbstractCegarLoop]: Abstraction has 1794 states and 2293 transitions. [2018-11-23 09:57:06,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 09:57:06,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1794 states and 2293 transitions. [2018-11-23 09:57:06,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-11-23 09:57:06,187 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:57:06,188 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 09:57:06,188 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:57:06,188 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:57:06,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1880402258, now seen corresponding path program 1 times [2018-11-23 09:57:06,188 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 09:57:06,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:57:06,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:57:06,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:57:06,190 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 09:57:06,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:57:06,579 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 260 proven. 2 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-11-23 09:57:06,579 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:57:06,579 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 09:57:06,579 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 341 with the following transitions: [2018-11-23 09:57:06,580 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [948], [952], [961], [965], [967], [972], [973], [974], [976], [977] [2018-11-23 09:57:06,582 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 09:57:06,582 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 09:57:10,240 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-23 09:57:10,240 INFO L272 AbstractInterpreter]: Visited 119 different actions 350 times. Merged at 6 different actions 13 times. Never widened. Performed 3300 root evaluator evaluations with a maximum evaluation depth of 21. Performed 3300 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-23 09:57:10,263 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:57:10,263 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-23 09:57:10,925 INFO L227 lantSequenceWeakener]: Weakened 337 states. On average, predicates are now at 80.24% of their original sizes. [2018-11-23 09:57:10,925 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-23 09:57:10,960 INFO L415 sIntCurrentIteration]: We unified 339 AI predicates to 339 [2018-11-23 09:57:10,960 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-23 09:57:10,960 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-23 09:57:10,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2018-11-23 09:57:10,960 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 09:57:10,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-23 09:57:10,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 09:57:10,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-23 09:57:10,961 INFO L87 Difference]: Start difference. First operand 1794 states and 2293 transitions. Second operand 9 states. [2018-11-23 09:57:25,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:57:25,985 INFO L93 Difference]: Finished difference Result 4464 states and 5703 transitions. [2018-11-23 09:57:25,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-23 09:57:25,985 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 340 [2018-11-23 09:57:25,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:57:25,991 INFO L225 Difference]: With dead ends: 4464 [2018-11-23 09:57:25,991 INFO L226 Difference]: Without dead ends: 2858 [2018-11-23 09:57:25,995 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 346 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-11-23 09:57:25,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2858 states. [2018-11-23 09:57:26,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2858 to 2832. [2018-11-23 09:57:26,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2832 states. [2018-11-23 09:57:26,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2832 states to 2832 states and 3415 transitions. [2018-11-23 09:57:26,049 INFO L78 Accepts]: Start accepts. Automaton has 2832 states and 3415 transitions. Word has length 340 [2018-11-23 09:57:26,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:57:26,050 INFO L480 AbstractCegarLoop]: Abstraction has 2832 states and 3415 transitions. [2018-11-23 09:57:26,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-23 09:57:26,050 INFO L276 IsEmpty]: Start isEmpty. Operand 2832 states and 3415 transitions. [2018-11-23 09:57:26,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2018-11-23 09:57:26,057 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:57:26,057 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 09:57:26,057 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:57:26,058 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:57:26,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1870233950, now seen corresponding path program 1 times [2018-11-23 09:57:26,058 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 09:57:26,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:57:26,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:57:26,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:57:26,059 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 09:57:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:57:26,672 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 397 proven. 150 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-11-23 09:57:26,672 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:57:26,672 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 09:57:26,673 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 414 with the following transitions: [2018-11-23 09:57:26,673 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [948], [952], [961], [965], [967], [972], [973], [974], [976], [977] [2018-11-23 09:57:26,675 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 09:57:26,675 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 09:57:30,744 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 09:57:30,745 INFO L272 AbstractInterpreter]: Visited 121 different actions 481 times. Merged at 8 different actions 30 times. Widened at 1 different actions 1 times. Performed 4672 root evaluator evaluations with a maximum evaluation depth of 21. Performed 4672 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 7 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-23 09:57:30,746 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:57:30,746 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 09:57:30,746 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:57:30,746 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_69266e3f-11a7-4332-973f-b97a7bd9ad1d/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 [2018-11-23 09:57:30,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:57:30,752 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 09:57:30,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:57:30,825 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 09:57:30,922 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 478 proven. 2 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-11-23 09:57:30,922 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 09:57:31,140 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 279 proven. 73 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2018-11-23 09:57:31,155 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 09:57:31,155 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2018-11-23 09:57:31,155 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 09:57:31,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-23 09:57:31,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-23 09:57:31,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2018-11-23 09:57:31,156 INFO L87 Difference]: Start difference. First operand 2832 states and 3415 transitions. Second operand 17 states. [2018-11-23 09:57:34,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:57:34,288 INFO L93 Difference]: Finished difference Result 8779 states and 11310 transitions. [2018-11-23 09:57:34,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-11-23 09:57:34,288 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 413 [2018-11-23 09:57:34,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:57:34,299 INFO L225 Difference]: With dead ends: 8779 [2018-11-23 09:57:34,300 INFO L226 Difference]: Without dead ends: 5373 [2018-11-23 09:57:34,314 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 901 GetRequests, 846 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 866 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=613, Invalid=2579, Unknown=0, NotChecked=0, Total=3192 [2018-11-23 09:57:34,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5373 states. [2018-11-23 09:57:34,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5373 to 4574. [2018-11-23 09:57:34,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4574 states. [2018-11-23 09:57:34,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4574 states to 4574 states and 5144 transitions. [2018-11-23 09:57:34,379 INFO L78 Accepts]: Start accepts. Automaton has 4574 states and 5144 transitions. Word has length 413 [2018-11-23 09:57:34,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:57:34,380 INFO L480 AbstractCegarLoop]: Abstraction has 4574 states and 5144 transitions. [2018-11-23 09:57:34,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-23 09:57:34,380 INFO L276 IsEmpty]: Start isEmpty. Operand 4574 states and 5144 transitions. [2018-11-23 09:57:34,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2018-11-23 09:57:34,388 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:57:34,388 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 09:57:34,388 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:57:34,389 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:57:34,389 INFO L82 PathProgramCache]: Analyzing trace with hash -877290118, now seen corresponding path program 1 times [2018-11-23 09:57:34,389 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 09:57:34,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:57:34,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:57:34,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:57:34,390 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 09:57:34,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:57:34,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1108 backedges. 500 proven. 74 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2018-11-23 09:57:34,662 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:57:34,662 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 09:57:34,663 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 621 with the following transitions: [2018-11-23 09:57:34,663 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [514], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [961], [965], [967], [972], [973], [974], [976], [977] [2018-11-23 09:57:34,666 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 09:57:34,667 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 09:57:38,633 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 09:57:38,634 INFO L272 AbstractInterpreter]: Visited 190 different actions 756 times. Merged at 8 different actions 29 times. Widened at 1 different actions 1 times. Performed 8369 root evaluator evaluations with a maximum evaluation depth of 21. Performed 8369 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 7 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-23 09:57:38,635 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:57:38,635 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 09:57:38,635 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:57:38,635 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_69266e3f-11a7-4332-973f-b97a7bd9ad1d/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 09:57:38,641 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:57:38,641 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 09:57:38,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:57:38,725 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 09:57:38,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1108 backedges. 752 proven. 2 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2018-11-23 09:57:38,862 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 09:57:39,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1108 backedges. 500 proven. 74 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2018-11-23 09:57:39,076 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 09:57:39,076 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-11-23 09:57:39,076 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 09:57:39,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-23 09:57:39,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-23 09:57:39,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-23 09:57:39,077 INFO L87 Difference]: Start difference. First operand 4574 states and 5144 transitions. Second operand 7 states. [2018-11-23 09:57:40,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:57:40,128 INFO L93 Difference]: Finished difference Result 12082 states and 15135 transitions. [2018-11-23 09:57:40,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-23 09:57:40,129 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 620 [2018-11-23 09:57:40,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:57:40,162 INFO L225 Difference]: With dead ends: 12082 [2018-11-23 09:57:40,162 INFO L226 Difference]: Without dead ends: 7696 [2018-11-23 09:57:40,181 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1257 GetRequests, 1243 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2018-11-23 09:57:40,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7696 states. [2018-11-23 09:57:40,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7696 to 7021. [2018-11-23 09:57:40,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7021 states. [2018-11-23 09:57:40,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7021 states to 7021 states and 8025 transitions. [2018-11-23 09:57:40,337 INFO L78 Accepts]: Start accepts. Automaton has 7021 states and 8025 transitions. Word has length 620 [2018-11-23 09:57:40,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:57:40,338 INFO L480 AbstractCegarLoop]: Abstraction has 7021 states and 8025 transitions. [2018-11-23 09:57:40,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-23 09:57:40,338 INFO L276 IsEmpty]: Start isEmpty. Operand 7021 states and 8025 transitions. [2018-11-23 09:57:40,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2018-11-23 09:57:40,345 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:57:40,345 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 09:57:40,346 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:57:40,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:57:40,346 INFO L82 PathProgramCache]: Analyzing trace with hash -2088235919, now seen corresponding path program 1 times [2018-11-23 09:57:40,346 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 09:57:40,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:57:40,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:57:40,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:57:40,347 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 09:57:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:57:40,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 507 proven. 74 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2018-11-23 09:57:40,827 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:57:40,827 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 09:57:40,827 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 628 with the following transitions: [2018-11-23 09:57:40,827 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [514], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [961], [965], [967], [972], [973], [974], [976], [977] [2018-11-23 09:57:40,830 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 09:57:40,830 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 09:57:44,812 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 09:57:44,812 INFO L272 AbstractInterpreter]: Visited 191 different actions 763 times. Merged at 9 different actions 32 times. Never widened. Performed 8462 root evaluator evaluations with a maximum evaluation depth of 21. Performed 8462 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 9 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-23 09:57:44,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:57:44,813 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 09:57:44,813 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:57:44,813 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_69266e3f-11a7-4332-973f-b97a7bd9ad1d/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 [2018-11-23 09:57:44,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:57:44,819 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 09:57:44,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:57:44,890 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 09:57:45,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 759 proven. 2 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2018-11-23 09:57:45,080 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 09:57:45,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 507 proven. 74 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2018-11-23 09:57:45,310 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 09:57:45,310 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-11-23 09:57:45,310 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 09:57:45,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-23 09:57:45,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-23 09:57:45,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-23 09:57:45,311 INFO L87 Difference]: Start difference. First operand 7021 states and 8025 transitions. Second operand 7 states. [2018-11-23 09:57:46,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:57:46,525 INFO L93 Difference]: Finished difference Result 16726 states and 21762 transitions. [2018-11-23 09:57:46,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-23 09:57:46,526 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 627 [2018-11-23 09:57:46,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:57:46,581 INFO L225 Difference]: With dead ends: 16726 [2018-11-23 09:57:46,582 INFO L226 Difference]: Without dead ends: 9893 [2018-11-23 09:57:46,627 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1271 GetRequests, 1257 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2018-11-23 09:57:46,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9893 states. [2018-11-23 09:57:46,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9893 to 9629. [2018-11-23 09:57:46,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9629 states. [2018-11-23 09:57:46,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9629 states to 9629 states and 11250 transitions. [2018-11-23 09:57:46,867 INFO L78 Accepts]: Start accepts. Automaton has 9629 states and 11250 transitions. Word has length 627 [2018-11-23 09:57:46,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:57:46,867 INFO L480 AbstractCegarLoop]: Abstraction has 9629 states and 11250 transitions. [2018-11-23 09:57:46,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-23 09:57:46,868 INFO L276 IsEmpty]: Start isEmpty. Operand 9629 states and 11250 transitions. [2018-11-23 09:57:46,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2018-11-23 09:57:46,877 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:57:46,877 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2018-11-23 09:57:46,877 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:57:46,877 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:57:46,878 INFO L82 PathProgramCache]: Analyzing trace with hash -909749628, now seen corresponding path program 1 times [2018-11-23 09:57:46,878 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 09:57:46,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:57:46,878 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:57:46,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:57:46,878 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 09:57:46,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:57:48,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1675 backedges. 547 proven. 767 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2018-11-23 09:57:48,031 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:57:48,031 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 09:57:48,032 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 754 with the following transitions: [2018-11-23 09:57:48,032 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [514], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [961], [965], [967], [972], [973], [974], [976], [977] [2018-11-23 09:57:48,034 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 09:57:48,034 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 09:57:52,007 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 09:57:52,008 INFO L272 AbstractInterpreter]: Visited 191 different actions 764 times. Merged at 9 different actions 33 times. Widened at 1 different actions 1 times. Performed 8470 root evaluator evaluations with a maximum evaluation depth of 21. Performed 8470 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 9 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-23 09:57:52,014 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:57:52,014 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 09:57:52,014 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:57:52,014 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_69266e3f-11a7-4332-973f-b97a7bd9ad1d/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 09:57:52,020 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:57:52,020 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 09:57:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:57:52,120 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 09:57:52,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1675 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 1474 trivial. 0 not checked. [2018-11-23 09:57:52,345 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 09:57:52,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1675 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 1474 trivial. 0 not checked. [2018-11-23 09:57:52,531 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-23 09:57:52,531 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [14] total 16 [2018-11-23 09:57:52,531 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 09:57:52,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 09:57:52,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 09:57:52,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2018-11-23 09:57:52,532 INFO L87 Difference]: Start difference. First operand 9629 states and 11250 transitions. Second operand 3 states. [2018-11-23 09:57:52,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:57:52,964 INFO L93 Difference]: Finished difference Result 21963 states and 26752 transitions. [2018-11-23 09:57:52,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 09:57:52,964 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 753 [2018-11-23 09:57:52,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:57:53,001 INFO L225 Difference]: With dead ends: 21963 [2018-11-23 09:57:53,001 INFO L226 Difference]: Without dead ends: 12522 [2018-11-23 09:57:53,042 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1521 GetRequests, 1507 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2018-11-23 09:57:53,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12522 states. [2018-11-23 09:57:53,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12522 to 12022. [2018-11-23 09:57:53,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12022 states. [2018-11-23 09:57:53,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12022 states to 12022 states and 14159 transitions. [2018-11-23 09:57:53,273 INFO L78 Accepts]: Start accepts. Automaton has 12022 states and 14159 transitions. Word has length 753 [2018-11-23 09:57:53,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:57:53,274 INFO L480 AbstractCegarLoop]: Abstraction has 12022 states and 14159 transitions. [2018-11-23 09:57:53,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 09:57:53,274 INFO L276 IsEmpty]: Start isEmpty. Operand 12022 states and 14159 transitions. [2018-11-23 09:57:53,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 760 [2018-11-23 09:57:53,285 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:57:53,286 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2018-11-23 09:57:53,286 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:57:53,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:57:53,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1472630376, now seen corresponding path program 1 times [2018-11-23 09:57:53,286 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 09:57:53,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:57:53,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:57:53,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:57:53,287 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 09:57:53,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:57:54,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 547 proven. 785 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2018-11-23 09:57:54,379 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:57:54,380 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 09:57:54,380 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 760 with the following transitions: [2018-11-23 09:57:54,380 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [538], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [961], [965], [967], [972], [973], [974], [976], [977] [2018-11-23 09:57:54,382 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 09:57:54,382 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 09:57:58,292 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 09:57:58,293 INFO L272 AbstractInterpreter]: Visited 191 different actions 762 times. Merged at 9 different actions 31 times. Never widened. Performed 8361 root evaluator evaluations with a maximum evaluation depth of 21. Performed 8361 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 9 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-23 09:57:58,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:57:58,294 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 09:57:58,294 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:57:58,294 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_69266e3f-11a7-4332-973f-b97a7bd9ad1d/bin-2019/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 09:57:58,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:57:58,300 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 09:57:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:57:58,385 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 09:57:58,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 1504 trivial. 0 not checked. [2018-11-23 09:57:58,595 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 09:57:58,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 1504 trivial. 0 not checked. [2018-11-23 09:57:58,793 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-23 09:57:58,794 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [14] total 15 [2018-11-23 09:57:58,794 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 09:57:58,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 09:57:58,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 09:57:58,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2018-11-23 09:57:58,796 INFO L87 Difference]: Start difference. First operand 12022 states and 14159 transitions. Second operand 3 states. [2018-11-23 09:57:59,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:57:59,317 INFO L93 Difference]: Finished difference Result 25727 states and 31442 transitions. [2018-11-23 09:57:59,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 09:57:59,318 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 759 [2018-11-23 09:57:59,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:57:59,356 INFO L225 Difference]: With dead ends: 25727 [2018-11-23 09:57:59,356 INFO L226 Difference]: Without dead ends: 13893 [2018-11-23 09:57:59,401 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1533 GetRequests, 1518 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2018-11-23 09:57:59,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13893 states. [2018-11-23 09:57:59,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13893 to 13711. [2018-11-23 09:57:59,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13711 states. [2018-11-23 09:57:59,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13711 states to 13711 states and 16613 transitions. [2018-11-23 09:57:59,661 INFO L78 Accepts]: Start accepts. Automaton has 13711 states and 16613 transitions. Word has length 759 [2018-11-23 09:57:59,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:57:59,662 INFO L480 AbstractCegarLoop]: Abstraction has 13711 states and 16613 transitions. [2018-11-23 09:57:59,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 09:57:59,662 INFO L276 IsEmpty]: Start isEmpty. Operand 13711 states and 16613 transitions. [2018-11-23 09:57:59,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 763 [2018-11-23 09:57:59,669 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:57:59,669 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2018-11-23 09:57:59,670 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:57:59,670 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:57:59,670 INFO L82 PathProgramCache]: Analyzing trace with hash -573310341, now seen corresponding path program 1 times [2018-11-23 09:57:59,670 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 09:57:59,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:57:59,671 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:57:59,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:57:59,671 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 09:57:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:58:00,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1720 backedges. 547 proven. 794 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2018-11-23 09:58:00,624 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:58:00,624 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 09:58:00,624 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 763 with the following transitions: [2018-11-23 09:58:00,624 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [961], [965], [967], [972], [973], [974], [976], [977] [2018-11-23 09:58:00,626 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 09:58:00,626 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 09:58:04,541 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 09:58:04,541 INFO L272 AbstractInterpreter]: Visited 191 different actions 770 times. Merged at 9 different actions 39 times. Widened at 1 different actions 2 times. Performed 8440 root evaluator evaluations with a maximum evaluation depth of 21. Performed 8440 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 9 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-23 09:58:04,542 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:58:04,543 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 09:58:04,543 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:58:04,543 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_69266e3f-11a7-4332-973f-b97a7bd9ad1d/bin-2019/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 09:58:04,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:58:04,549 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 09:58:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:58:04,645 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 09:58:05,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1720 backedges. 1038 proven. 2 refuted. 0 times theorem prover too weak. 680 trivial. 0 not checked. [2018-11-23 09:58:05,026 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 09:58:05,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1720 backedges. 671 proven. 83 refuted. 0 times theorem prover too weak. 966 trivial. 0 not checked. [2018-11-23 09:58:05,386 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 09:58:05,387 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 6] total 20 [2018-11-23 09:58:05,387 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 09:58:05,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-23 09:58:05,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-23 09:58:05,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2018-11-23 09:58:05,388 INFO L87 Difference]: Start difference. First operand 13711 states and 16613 transitions. Second operand 18 states. [2018-11-23 09:58:10,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:58:10,038 INFO L93 Difference]: Finished difference Result 30783 states and 37421 transitions. [2018-11-23 09:58:10,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-11-23 09:58:10,038 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 762 [2018-11-23 09:58:10,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:58:10,071 INFO L225 Difference]: With dead ends: 30783 [2018-11-23 09:58:10,072 INFO L226 Difference]: Without dead ends: 17260 [2018-11-23 09:58:10,106 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1626 GetRequests, 1552 SyntacticMatches, 5 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1487 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=972, Invalid=3998, Unknown=0, NotChecked=0, Total=4970 [2018-11-23 09:58:10,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17260 states. [2018-11-23 09:58:10,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17260 to 16836. [2018-11-23 09:58:10,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16836 states. [2018-11-23 09:58:10,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16836 states to 16836 states and 19638 transitions. [2018-11-23 09:58:10,318 INFO L78 Accepts]: Start accepts. Automaton has 16836 states and 19638 transitions. Word has length 762 [2018-11-23 09:58:10,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:58:10,319 INFO L480 AbstractCegarLoop]: Abstraction has 16836 states and 19638 transitions. [2018-11-23 09:58:10,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-23 09:58:10,319 INFO L276 IsEmpty]: Start isEmpty. Operand 16836 states and 19638 transitions. [2018-11-23 09:58:10,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 796 [2018-11-23 09:58:10,328 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:58:10,328 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2018-11-23 09:58:10,328 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:58:10,329 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:58:10,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1482993118, now seen corresponding path program 1 times [2018-11-23 09:58:10,329 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 09:58:10,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:58:10,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:58:10,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:58:10,330 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 09:58:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:58:11,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1760 backedges. 720 proven. 709 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2018-11-23 09:58:11,857 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:58:11,857 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 09:58:11,858 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 796 with the following transitions: [2018-11-23 09:58:11,858 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [854], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [961], [965], [967], [972], [973], [974], [976], [977] [2018-11-23 09:58:11,860 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 09:58:11,860 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 09:58:15,760 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 09:58:15,760 INFO L272 AbstractInterpreter]: Visited 192 different actions 774 times. Merged at 9 different actions 39 times. Widened at 1 different actions 2 times. Performed 8536 root evaluator evaluations with a maximum evaluation depth of 21. Performed 8536 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 11 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-23 09:58:15,761 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:58:15,761 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 09:58:15,762 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:58:15,762 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_69266e3f-11a7-4332-973f-b97a7bd9ad1d/bin-2019/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 09:58:15,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:58:15,768 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 09:58:15,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:58:15,857 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 09:58:16,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1760 backedges. 1071 proven. 2 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2018-11-23 09:58:16,066 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 09:58:16,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1760 backedges. 704 proven. 83 refuted. 0 times theorem prover too weak. 973 trivial. 0 not checked. [2018-11-23 09:58:16,369 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 09:58:16,370 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 5, 5] total 22 [2018-11-23 09:58:16,370 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 09:58:16,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-23 09:58:16,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-23 09:58:16,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2018-11-23 09:58:16,371 INFO L87 Difference]: Start difference. First operand 16836 states and 19638 transitions. Second operand 20 states. [2018-11-23 09:58:22,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:58:22,284 INFO L93 Difference]: Finished difference Result 34870 states and 41259 transitions. [2018-11-23 09:58:22,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-11-23 09:58:22,285 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 795 [2018-11-23 09:58:22,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:58:22,327 INFO L225 Difference]: With dead ends: 34870 [2018-11-23 09:58:22,328 INFO L226 Difference]: Without dead ends: 17284 [2018-11-23 09:58:22,367 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1758 GetRequests, 1656 SyntacticMatches, 3 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3405 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1469, Invalid=8631, Unknown=0, NotChecked=0, Total=10100 [2018-11-23 09:58:22,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17284 states. [2018-11-23 09:58:22,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17284 to 16459. [2018-11-23 09:58:22,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16459 states. [2018-11-23 09:58:22,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16459 states to 16459 states and 18047 transitions. [2018-11-23 09:58:22,617 INFO L78 Accepts]: Start accepts. Automaton has 16459 states and 18047 transitions. Word has length 795 [2018-11-23 09:58:22,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:58:22,618 INFO L480 AbstractCegarLoop]: Abstraction has 16459 states and 18047 transitions. [2018-11-23 09:58:22,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-23 09:58:22,618 INFO L276 IsEmpty]: Start isEmpty. Operand 16459 states and 18047 transitions. [2018-11-23 09:58:22,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1045 [2018-11-23 09:58:22,631 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:58:22,632 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 09:58:22,632 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:58:22,632 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:58:22,632 INFO L82 PathProgramCache]: Analyzing trace with hash -673252566, now seen corresponding path program 1 times [2018-11-23 09:58:22,632 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 09:58:22,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:58:22,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:58:22,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:58:22,633 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 09:58:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:58:23,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3481 backedges. 1070 proven. 537 refuted. 0 times theorem prover too weak. 1874 trivial. 0 not checked. [2018-11-23 09:58:23,696 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:58:23,697 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 09:58:23,697 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1045 with the following transitions: [2018-11-23 09:58:23,697 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [514], [515], [519], [522], [523], [527], [531], [535], [539], [542], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [961], [965], [967], [972], [973], [974], [976], [977] [2018-11-23 09:58:23,699 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 09:58:23,699 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 09:58:27,806 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 09:58:27,806 INFO L272 AbstractInterpreter]: Visited 195 different actions 787 times. Merged at 11 different actions 40 times. Widened at 1 different actions 1 times. Performed 8744 root evaluator evaluations with a maximum evaluation depth of 21. Performed 8744 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 16 fixpoints after 6 different actions. Largest state had 24 variables. [2018-11-23 09:58:27,808 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:58:27,808 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 09:58:27,808 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:58:27,808 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_69266e3f-11a7-4332-973f-b97a7bd9ad1d/bin-2019/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 09:58:27,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:58:27,814 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 09:58:27,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:58:27,951 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 09:58:28,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3481 backedges. 1427 proven. 2 refuted. 0 times theorem prover too weak. 2052 trivial. 0 not checked. [2018-11-23 09:58:28,363 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 09:58:28,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3481 backedges. 841 proven. 74 refuted. 0 times theorem prover too weak. 2566 trivial. 0 not checked. [2018-11-23 09:58:28,876 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 09:58:28,876 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 20 [2018-11-23 09:58:28,876 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 09:58:28,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-23 09:58:28,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-23 09:58:28,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2018-11-23 09:58:28,877 INFO L87 Difference]: Start difference. First operand 16459 states and 18047 transitions. Second operand 18 states. [2018-11-23 09:58:32,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:58:32,464 INFO L93 Difference]: Finished difference Result 33922 states and 38601 transitions. [2018-11-23 09:58:32,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-11-23 09:58:32,464 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1044 [2018-11-23 09:58:32,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:58:32,505 INFO L225 Difference]: With dead ends: 33922 [2018-11-23 09:58:32,506 INFO L226 Difference]: Without dead ends: 16795 [2018-11-23 09:58:32,541 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2183 GetRequests, 2121 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1124 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=765, Invalid=3267, Unknown=0, NotChecked=0, Total=4032 [2018-11-23 09:58:32,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16795 states. [2018-11-23 09:58:32,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16795 to 16161. [2018-11-23 09:58:32,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16161 states. [2018-11-23 09:58:32,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16161 states to 16161 states and 17506 transitions. [2018-11-23 09:58:32,776 INFO L78 Accepts]: Start accepts. Automaton has 16161 states and 17506 transitions. Word has length 1044 [2018-11-23 09:58:32,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:58:32,776 INFO L480 AbstractCegarLoop]: Abstraction has 16161 states and 17506 transitions. [2018-11-23 09:58:32,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-23 09:58:32,777 INFO L276 IsEmpty]: Start isEmpty. Operand 16161 states and 17506 transitions. [2018-11-23 09:58:32,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1057 [2018-11-23 09:58:32,787 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:58:32,787 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 09:58:32,787 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:58:32,788 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:58:32,788 INFO L82 PathProgramCache]: Analyzing trace with hash 352437506, now seen corresponding path program 1 times [2018-11-23 09:58:32,788 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 09:58:32,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:58:32,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:58:32,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:58:32,789 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 09:58:32,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:58:33,975 INFO L134 CoverageAnalysis]: Checked inductivity of 3559 backedges. 1082 proven. 546 refuted. 0 times theorem prover too weak. 1931 trivial. 0 not checked. [2018-11-23 09:58:33,976 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:58:33,976 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 09:58:33,976 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1057 with the following transitions: [2018-11-23 09:58:33,976 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [542], [543], [547], [550], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [961], [965], [967], [972], [973], [974], [976], [977] [2018-11-23 09:58:33,978 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 09:58:33,978 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 09:58:38,265 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 09:58:38,265 INFO L272 AbstractInterpreter]: Visited 195 different actions 784 times. Merged at 12 different actions 37 times. Never widened. Performed 8623 root evaluator evaluations with a maximum evaluation depth of 21. Performed 8623 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 16 fixpoints after 5 different actions. Largest state had 24 variables. [2018-11-23 09:58:38,267 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:58:38,267 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 09:58:38,267 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:58:38,267 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_69266e3f-11a7-4332-973f-b97a7bd9ad1d/bin-2019/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 09:58:38,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:58:38,274 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 09:58:38,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:58:38,384 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 09:58:38,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3559 backedges. 953 proven. 2 refuted. 0 times theorem prover too weak. 2604 trivial. 0 not checked. [2018-11-23 09:58:38,795 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 09:58:39,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3559 backedges. 953 proven. 2 refuted. 0 times theorem prover too weak. 2604 trivial. 0 not checked. [2018-11-23 09:58:39,535 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 09:58:39,535 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5, 5] total 21 [2018-11-23 09:58:39,535 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 09:58:39,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-23 09:58:39,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-23 09:58:39,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2018-11-23 09:58:39,536 INFO L87 Difference]: Start difference. First operand 16161 states and 17506 transitions. Second operand 19 states. [2018-11-23 09:58:43,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:58:43,337 INFO L93 Difference]: Finished difference Result 33632 states and 38130 transitions. [2018-11-23 09:58:43,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-11-23 09:58:43,338 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 1056 [2018-11-23 09:58:43,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:58:43,380 INFO L225 Difference]: With dead ends: 33632 [2018-11-23 09:58:43,381 INFO L226 Difference]: Without dead ends: 15137 [2018-11-23 09:58:43,414 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2210 GetRequests, 2140 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1493 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=973, Invalid=3997, Unknown=0, NotChecked=0, Total=4970 [2018-11-23 09:58:43,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15137 states. [2018-11-23 09:58:43,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15137 to 14535. [2018-11-23 09:58:43,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14535 states. [2018-11-23 09:58:43,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14535 states to 14535 states and 15663 transitions. [2018-11-23 09:58:43,629 INFO L78 Accepts]: Start accepts. Automaton has 14535 states and 15663 transitions. Word has length 1056 [2018-11-23 09:58:43,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:58:43,629 INFO L480 AbstractCegarLoop]: Abstraction has 14535 states and 15663 transitions. [2018-11-23 09:58:43,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-23 09:58:43,629 INFO L276 IsEmpty]: Start isEmpty. Operand 14535 states and 15663 transitions. [2018-11-23 09:58:43,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1072 [2018-11-23 09:58:43,640 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:58:43,640 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 09:58:43,640 INFO L423 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:58:43,640 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:58:43,640 INFO L82 PathProgramCache]: Analyzing trace with hash 673816067, now seen corresponding path program 1 times [2018-11-23 09:58:43,641 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 09:58:43,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:58:43,641 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:58:43,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:58:43,641 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 09:58:43,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:58:45,037 INFO L134 CoverageAnalysis]: Checked inductivity of 3634 backedges. 1097 proven. 546 refuted. 0 times theorem prover too weak. 1991 trivial. 0 not checked. [2018-11-23 09:58:45,037 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:58:45,037 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 09:58:45,037 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1072 with the following transitions: [2018-11-23 09:58:45,038 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [542], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [622], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [961], [965], [967], [972], [973], [974], [976], [977] [2018-11-23 09:58:45,040 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 09:58:45,040 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 09:58:49,348 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 09:58:49,348 INFO L272 AbstractInterpreter]: Visited 195 different actions 784 times. Merged at 11 different actions 37 times. Widened at 1 different actions 1 times. Performed 8762 root evaluator evaluations with a maximum evaluation depth of 21. Performed 8762 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 16 fixpoints after 6 different actions. Largest state had 24 variables. [2018-11-23 09:58:49,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:58:49,351 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 09:58:49,351 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:58:49,351 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_69266e3f-11a7-4332-973f-b97a7bd9ad1d/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 [2018-11-23 09:58:49,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:58:49,359 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 09:58:49,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:58:49,480 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 09:58:49,841 INFO L134 CoverageAnalysis]: Checked inductivity of 3634 backedges. 953 proven. 2 refuted. 0 times theorem prover too weak. 2679 trivial. 0 not checked. [2018-11-23 09:58:49,841 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 09:58:50,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3634 backedges. 953 proven. 2 refuted. 0 times theorem prover too weak. 2679 trivial. 0 not checked. [2018-11-23 09:58:50,602 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 09:58:50,603 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 17 [2018-11-23 09:58:50,603 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 09:58:50,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-23 09:58:50,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-23 09:58:50,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2018-11-23 09:58:50,604 INFO L87 Difference]: Start difference. First operand 14535 states and 15663 transitions. Second operand 15 states. [2018-11-23 09:58:53,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:58:53,790 INFO L93 Difference]: Finished difference Result 31240 states and 34730 transitions. [2018-11-23 09:58:53,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-11-23 09:58:53,790 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 1071 [2018-11-23 09:58:53,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:58:53,823 INFO L225 Difference]: With dead ends: 31240 [2018-11-23 09:58:53,823 INFO L226 Difference]: Without dead ends: 15815 [2018-11-23 09:58:53,849 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2227 GetRequests, 2168 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 998 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=730, Invalid=2810, Unknown=0, NotChecked=0, Total=3540 [2018-11-23 09:58:53,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15815 states. [2018-11-23 09:58:54,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15815 to 14050. [2018-11-23 09:58:54,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14050 states. [2018-11-23 09:58:54,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14050 states to 14050 states and 14992 transitions. [2018-11-23 09:58:54,021 INFO L78 Accepts]: Start accepts. Automaton has 14050 states and 14992 transitions. Word has length 1071 [2018-11-23 09:58:54,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:58:54,022 INFO L480 AbstractCegarLoop]: Abstraction has 14050 states and 14992 transitions. [2018-11-23 09:58:54,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-23 09:58:54,022 INFO L276 IsEmpty]: Start isEmpty. Operand 14050 states and 14992 transitions. [2018-11-23 09:58:54,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1089 [2018-11-23 09:58:54,034 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:58:54,035 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 09:58:54,035 INFO L423 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:58:54,035 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:58:54,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1935974590, now seen corresponding path program 1 times [2018-11-23 09:58:54,036 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 09:58:54,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:58:54,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:58:54,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:58:54,037 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 09:58:54,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:58:55,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3701 backedges. 970 proven. 694 refuted. 0 times theorem prover too weak. 2037 trivial. 0 not checked. [2018-11-23 09:58:55,298 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:58:55,298 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 09:58:55,299 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1089 with the following transitions: [2018-11-23 09:58:55,299 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [542], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [690], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [961], [965], [967], [972], [973], [974], [976], [977] [2018-11-23 09:58:55,301 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 09:58:55,301 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 09:58:59,467 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 09:58:59,467 INFO L272 AbstractInterpreter]: Visited 195 different actions 789 times. Merged at 12 different actions 42 times. Widened at 1 different actions 2 times. Performed 8790 root evaluator evaluations with a maximum evaluation depth of 21. Performed 8790 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 16 fixpoints after 6 different actions. Largest state had 24 variables. [2018-11-23 09:58:59,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:58:59,469 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 09:58:59,469 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:58:59,469 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_69266e3f-11a7-4332-973f-b97a7bd9ad1d/bin-2019/utaipan/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 09:58:59,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:58:59,479 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 09:58:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:58:59,594 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 09:58:59,939 INFO L134 CoverageAnalysis]: Checked inductivity of 3701 backedges. 953 proven. 2 refuted. 0 times theorem prover too weak. 2746 trivial. 0 not checked. [2018-11-23 09:58:59,940 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 09:59:00,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3701 backedges. 953 proven. 2 refuted. 0 times theorem prover too weak. 2746 trivial. 0 not checked. [2018-11-23 09:59:00,639 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 09:59:00,639 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2018-11-23 09:59:00,639 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 09:59:00,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-23 09:59:00,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-23 09:59:00,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2018-11-23 09:59:00,640 INFO L87 Difference]: Start difference. First operand 14050 states and 14992 transitions. Second operand 17 states. [2018-11-23 09:59:03,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:59:03,688 INFO L93 Difference]: Finished difference Result 28685 states and 30648 transitions. [2018-11-23 09:59:03,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-11-23 09:59:03,688 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 1088 [2018-11-23 09:59:03,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:59:03,707 INFO L225 Difference]: With dead ends: 28685 [2018-11-23 09:59:03,707 INFO L226 Difference]: Without dead ends: 14825 [2018-11-23 09:59:03,721 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2246 GetRequests, 2195 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=552, Invalid=2100, Unknown=0, NotChecked=0, Total=2652 [2018-11-23 09:59:03,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14825 states. [2018-11-23 09:59:03,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14825 to 14065. [2018-11-23 09:59:03,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14065 states. [2018-11-23 09:59:03,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14065 states to 14065 states and 15014 transitions. [2018-11-23 09:59:03,857 INFO L78 Accepts]: Start accepts. Automaton has 14065 states and 15014 transitions. Word has length 1088 [2018-11-23 09:59:03,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:59:03,858 INFO L480 AbstractCegarLoop]: Abstraction has 14065 states and 15014 transitions. [2018-11-23 09:59:03,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-23 09:59:03,858 INFO L276 IsEmpty]: Start isEmpty. Operand 14065 states and 15014 transitions. [2018-11-23 09:59:03,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1151 [2018-11-23 09:59:03,872 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:59:03,872 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 09:59:03,872 INFO L423 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:59:03,872 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:59:03,873 INFO L82 PathProgramCache]: Analyzing trace with hash 4779550, now seen corresponding path program 1 times [2018-11-23 09:59:03,873 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 09:59:03,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:59:03,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:59:03,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:59:03,874 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 09:59:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:59:04,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3821 backedges. 1662 proven. 166 refuted. 0 times theorem prover too weak. 1993 trivial. 0 not checked. [2018-11-23 09:59:04,419 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:59:04,419 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 09:59:04,419 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1151 with the following transitions: [2018-11-23 09:59:04,419 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [542], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [935], [938], [948], [952], [961], [965], [967], [972], [973], [974], [976], [977] [2018-11-23 09:59:04,422 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 09:59:04,422 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 09:59:08,485 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 09:59:08,485 INFO L272 AbstractInterpreter]: Visited 196 different actions 787 times. Merged at 12 different actions 36 times. Never widened. Performed 8643 root evaluator evaluations with a maximum evaluation depth of 21. Performed 8643 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 16 fixpoints after 5 different actions. Largest state had 24 variables. [2018-11-23 09:59:08,491 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:59:08,491 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 09:59:08,491 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:59:08,491 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_69266e3f-11a7-4332-973f-b97a7bd9ad1d/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 [2018-11-23 09:59:08,499 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:59:08,499 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 09:59:08,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:59:08,638 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 09:59:09,119 INFO L134 CoverageAnalysis]: Checked inductivity of 3821 backedges. 2257 proven. 6 refuted. 0 times theorem prover too weak. 1558 trivial. 0 not checked. [2018-11-23 09:59:09,119 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 09:59:09,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3821 backedges. 1662 proven. 339 refuted. 0 times theorem prover too weak. 1820 trivial. 0 not checked. [2018-11-23 09:59:09,792 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 09:59:09,793 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 15 [2018-11-23 09:59:09,793 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 09:59:09,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-23 09:59:09,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 09:59:09,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-11-23 09:59:09,794 INFO L87 Difference]: Start difference. First operand 14065 states and 15014 transitions. Second operand 9 states. [2018-11-23 09:59:11,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:59:11,092 INFO L93 Difference]: Finished difference Result 31539 states and 33810 transitions. [2018-11-23 09:59:11,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-23 09:59:11,093 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1150 [2018-11-23 09:59:11,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:59:11,115 INFO L225 Difference]: With dead ends: 31539 [2018-11-23 09:59:11,115 INFO L226 Difference]: Without dead ends: 17664 [2018-11-23 09:59:11,131 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2317 GetRequests, 2298 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2018-11-23 09:59:11,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17664 states. [2018-11-23 09:59:11,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17664 to 16861. [2018-11-23 09:59:11,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16861 states. [2018-11-23 09:59:11,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16861 states to 16861 states and 18094 transitions. [2018-11-23 09:59:11,305 INFO L78 Accepts]: Start accepts. Automaton has 16861 states and 18094 transitions. Word has length 1150 [2018-11-23 09:59:11,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:59:11,306 INFO L480 AbstractCegarLoop]: Abstraction has 16861 states and 18094 transitions. [2018-11-23 09:59:11,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-23 09:59:11,306 INFO L276 IsEmpty]: Start isEmpty. Operand 16861 states and 18094 transitions. [2018-11-23 09:59:11,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1411 [2018-11-23 09:59:11,316 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:59:11,316 INFO L402 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 09:59:11,316 INFO L423 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:59:11,316 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:59:11,317 INFO L82 PathProgramCache]: Analyzing trace with hash 835499848, now seen corresponding path program 1 times [2018-11-23 09:59:11,317 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 09:59:11,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:59:11,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:59:11,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:59:11,318 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 09:59:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:59:13,194 INFO L134 CoverageAnalysis]: Checked inductivity of 5927 backedges. 1204 proven. 916 refuted. 0 times theorem prover too weak. 3807 trivial. 0 not checked. [2018-11-23 09:59:13,194 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:59:13,195 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 09:59:13,195 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1411 with the following transitions: [2018-11-23 09:59:13,195 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [542], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [690], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [778], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [935], [939], [943], [946], [948], [952], [961], [965], [967], [972], [973], [974], [976], [977] [2018-11-23 09:59:13,197 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 09:59:13,197 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 09:59:17,267 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 09:59:17,267 INFO L272 AbstractInterpreter]: Visited 200 different actions 809 times. Merged at 12 different actions 42 times. Widened at 1 different actions 2 times. Performed 9014 root evaluator evaluations with a maximum evaluation depth of 21. Performed 9014 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 18 fixpoints after 8 different actions. Largest state had 24 variables. [2018-11-23 09:59:17,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:59:17,268 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 09:59:17,268 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:59:17,268 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_69266e3f-11a7-4332-973f-b97a7bd9ad1d/bin-2019/utaipan/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 09:59:17,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:59:17,276 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 09:59:17,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:59:17,450 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 09:59:18,047 INFO L134 CoverageAnalysis]: Checked inductivity of 5927 backedges. 1187 proven. 2 refuted. 0 times theorem prover too weak. 4738 trivial. 0 not checked. [2018-11-23 09:59:18,047 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 09:59:19,073 INFO L134 CoverageAnalysis]: Checked inductivity of 5927 backedges. 1187 proven. 2 refuted. 0 times theorem prover too weak. 4738 trivial. 0 not checked. [2018-11-23 09:59:19,091 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 09:59:19,091 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2018-11-23 09:59:19,091 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 09:59:19,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-23 09:59:19,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-23 09:59:19,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2018-11-23 09:59:19,093 INFO L87 Difference]: Start difference. First operand 16861 states and 18094 transitions. Second operand 17 states. [2018-11-23 09:59:22,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:59:22,162 INFO L93 Difference]: Finished difference Result 34074 states and 36601 transitions. [2018-11-23 09:59:22,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-11-23 09:59:22,162 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 1410 [2018-11-23 09:59:22,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:59:22,184 INFO L225 Difference]: With dead ends: 34074 [2018-11-23 09:59:22,184 INFO L226 Difference]: Without dead ends: 17403 [2018-11-23 09:59:22,203 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2891 GetRequests, 2840 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=512, Invalid=2140, Unknown=0, NotChecked=0, Total=2652 [2018-11-23 09:59:22,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17403 states. [2018-11-23 09:59:22,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17403 to 16859. [2018-11-23 09:59:22,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16859 states. [2018-11-23 09:59:22,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16859 states to 16859 states and 18080 transitions. [2018-11-23 09:59:22,362 INFO L78 Accepts]: Start accepts. Automaton has 16859 states and 18080 transitions. Word has length 1410 [2018-11-23 09:59:22,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:59:22,363 INFO L480 AbstractCegarLoop]: Abstraction has 16859 states and 18080 transitions. [2018-11-23 09:59:22,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-23 09:59:22,363 INFO L276 IsEmpty]: Start isEmpty. Operand 16859 states and 18080 transitions. [2018-11-23 09:59:22,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1881 [2018-11-23 09:59:22,401 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:59:22,401 INFO L402 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 09:59:22,401 INFO L423 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:59:22,401 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:59:22,402 INFO L82 PathProgramCache]: Analyzing trace with hash -2139228247, now seen corresponding path program 1 times [2018-11-23 09:59:22,402 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 09:59:22,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:59:22,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:59:22,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:59:22,402 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 09:59:22,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:59:23,738 INFO L134 CoverageAnalysis]: Checked inductivity of 10285 backedges. 1926 proven. 533 refuted. 0 times theorem prover too weak. 7826 trivial. 0 not checked. [2018-11-23 09:59:23,739 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:59:23,739 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 09:59:23,739 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1881 with the following transitions: [2018-11-23 09:59:23,739 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [542], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [662], [663], [667], [671], [675], [679], [683], [686], [687], [690], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [778], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [935], [938], [939], [943], [946], [948], [952], [961], [965], [967], [972], [973], [974], [976], [977] [2018-11-23 09:59:23,741 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 09:59:23,741 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 09:59:27,779 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 09:59:27,780 INFO L272 AbstractInterpreter]: Visited 202 different actions 812 times. Merged at 12 different actions 37 times. Widened at 1 different actions 1 times. Performed 9045 root evaluator evaluations with a maximum evaluation depth of 21. Performed 9045 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 20 fixpoints after 10 different actions. Largest state had 24 variables. [2018-11-23 09:59:27,781 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:59:27,781 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 09:59:27,781 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:59:27,781 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_69266e3f-11a7-4332-973f-b97a7bd9ad1d/bin-2019/utaipan/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 09:59:27,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:59:27,790 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 09:59:27,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:59:27,995 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 09:59:28,936 INFO L134 CoverageAnalysis]: Checked inductivity of 10285 backedges. 4359 proven. 2 refuted. 0 times theorem prover too weak. 5924 trivial. 0 not checked. [2018-11-23 09:59:28,936 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 09:59:30,071 INFO L134 CoverageAnalysis]: Checked inductivity of 10285 backedges. 1947 proven. 260 refuted. 0 times theorem prover too weak. 8078 trivial. 0 not checked. [2018-11-23 09:59:30,089 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 09:59:30,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 12 [2018-11-23 09:59:30,090 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 09:59:30,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-23 09:59:30,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-23 09:59:30,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-11-23 09:59:30,091 INFO L87 Difference]: Start difference. First operand 16859 states and 18080 transitions. Second operand 11 states. [2018-11-23 09:59:31,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:59:31,836 INFO L93 Difference]: Finished difference Result 37609 states and 40755 transitions. [2018-11-23 09:59:31,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-23 09:59:31,836 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1880 [2018-11-23 09:59:31,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:59:31,843 INFO L225 Difference]: With dead ends: 37609 [2018-11-23 09:59:31,843 INFO L226 Difference]: Without dead ends: 4287 [2018-11-23 09:59:31,884 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3801 GetRequests, 3769 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=677, Unknown=0, NotChecked=0, Total=930 [2018-11-23 09:59:31,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4287 states. [2018-11-23 09:59:31,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4287 to 4099. [2018-11-23 09:59:31,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4099 states. [2018-11-23 09:59:31,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4099 states to 4099 states and 4219 transitions. [2018-11-23 09:59:31,936 INFO L78 Accepts]: Start accepts. Automaton has 4099 states and 4219 transitions. Word has length 1880 [2018-11-23 09:59:31,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:59:31,937 INFO L480 AbstractCegarLoop]: Abstraction has 4099 states and 4219 transitions. [2018-11-23 09:59:31,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-23 09:59:31,937 INFO L276 IsEmpty]: Start isEmpty. Operand 4099 states and 4219 transitions. [2018-11-23 09:59:31,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1956 [2018-11-23 09:59:31,954 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:59:31,954 INFO L402 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 10, 10, 10, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 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] [2018-11-23 09:59:31,954 INFO L423 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:59:31,955 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:59:31,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1730654995, now seen corresponding path program 1 times [2018-11-23 09:59:31,955 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 09:59:31,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:59:31,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:59:31,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:59:31,956 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 09:59:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:59:34,650 INFO L134 CoverageAnalysis]: Checked inductivity of 11670 backedges. 1608 proven. 1424 refuted. 0 times theorem prover too weak. 8638 trivial. 0 not checked. [2018-11-23 09:59:34,650 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:59:34,650 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 09:59:34,650 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1956 with the following transitions: [2018-11-23 09:59:34,651 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [542], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [670], [671], [675], [679], [683], [686], [687], [690], [691], [695], [699], [703], [707], [711], [715], [718], [719], [723], [726], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [778], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [935], [938], [939], [943], [946], [948], [952], [961], [965], [967], [972], [973], [974], [976], [977] [2018-11-23 09:59:34,652 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 09:59:34,652 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 09:59:38,587 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 09:59:38,587 INFO L272 AbstractInterpreter]: Visited 204 different actions 821 times. Merged at 12 different actions 38 times. Never widened. Performed 9144 root evaluator evaluations with a maximum evaluation depth of 21. Performed 9144 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 22 fixpoints after 11 different actions. Largest state had 24 variables. [2018-11-23 09:59:38,591 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:59:38,591 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 09:59:38,591 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:59:38,591 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_69266e3f-11a7-4332-973f-b97a7bd9ad1d/bin-2019/utaipan/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 09:59:38,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:59:38,599 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 09:59:38,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:59:38,807 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 09:59:43,410 WARN L854 $PredicateComparison]: unable to prove that (or (exists ((v_~a12~0_849 Int)) (let ((.cse0 (div v_~a12~0_849 5))) (and (<= 0 .cse0) (<= |c_old(~a12~0)| v_~a12~0_849) (<= 0 v_~a12~0_849) (<= (mod .cse0 26) (+ c_~a12~0 15)) (<= 0 (+ .cse0 1))))) (exists ((v_prenex_31 Int)) (let ((.cse1 (div v_prenex_31 5))) (let ((.cse2 (mod .cse1 26))) (and (= 0 (mod (+ .cse1 1) 26)) (< .cse1 0) (<= |c_old(~a12~0)| v_prenex_31) (= 0 (mod v_prenex_31 5)) (<= .cse2 (+ c_~a12~0 41)) (not (= 0 .cse2)))))) (exists ((v_prenex_27 Int)) (let ((.cse5 (div v_prenex_27 5))) (let ((.cse4 (+ .cse5 1))) (let ((.cse3 (mod .cse4 26))) (and (<= |c_old(~a12~0)| v_prenex_27) (<= .cse3 (+ c_~a12~0 41)) (< .cse4 0) (< v_prenex_27 0) (not (= 0 (mod v_prenex_27 5))) (= 0 (mod .cse5 26)) (not (= 0 .cse3))))))) (exists ((v_prenex_30 Int)) (let ((.cse7 (div v_prenex_30 5))) (let ((.cse8 (+ .cse7 1))) (let ((.cse6 (mod .cse8 26))) (and (not (= 0 (mod v_prenex_30 5))) (<= .cse6 (+ c_~a12~0 41)) (not (= 0 (mod .cse7 26))) (< v_prenex_30 0) (not (= 0 .cse6)) (< .cse8 0) (<= |c_old(~a12~0)| v_prenex_30) (< .cse7 0)))))) (exists ((v_prenex_17 Int)) (let ((.cse10 (div v_prenex_17 5))) (let ((.cse9 (mod .cse10 26))) (and (<= .cse9 (+ c_~a12~0 15)) (= 0 (mod v_prenex_17 5)) (= 0 (mod (+ .cse10 1) 26)) (<= |c_old(~a12~0)| v_prenex_17) (= 0 .cse9))))) (exists ((v_prenex_21 Int)) (let ((.cse12 (div v_prenex_21 5))) (let ((.cse11 (mod .cse12 26))) (and (not (= 0 .cse11)) (<= .cse11 (+ c_~a12~0 41)) (<= |c_old(~a12~0)| v_prenex_21) (= 0 (mod (+ .cse12 1) 26)) (< .cse12 0) (<= 0 v_prenex_21))))) (exists ((v_prenex_18 Int)) (let ((.cse14 (div v_prenex_18 5))) (let ((.cse13 (mod .cse14 26))) (and (<= 0 v_prenex_18) (= 0 .cse13) (<= |c_old(~a12~0)| v_prenex_18) (<= 0 (+ .cse14 1)) (<= .cse13 (+ c_~a12~0 15)))))) (exists ((v_prenex_10 Int)) (let ((.cse16 (div v_prenex_10 5))) (let ((.cse15 (mod (+ .cse16 1) 26))) (and (<= .cse15 (+ c_~a12~0 15)) (< v_prenex_10 0) (= 0 .cse15) (<= |c_old(~a12~0)| v_prenex_10) (= 0 (mod .cse16 26)) (not (= 0 (mod v_prenex_10 5))))))) (exists ((v_prenex_14 Int)) (let ((.cse19 (div v_prenex_14 5))) (let ((.cse18 (mod .cse19 26)) (.cse17 (+ .cse19 1))) (and (not (= 0 (mod .cse17 26))) (not (= 0 .cse18)) (<= .cse18 (+ c_~a12~0 41)) (< .cse19 0) (<= |c_old(~a12~0)| v_prenex_14) (< .cse17 0) (<= 0 v_prenex_14))))) (exists ((v_prenex_29 Int)) (let ((.cse21 (div v_prenex_29 5))) (let ((.cse20 (+ .cse21 1))) (and (not (= 0 (mod .cse20 26))) (<= |c_old(~a12~0)| v_prenex_29) (<= (mod .cse21 26) (+ c_~a12~0 15)) (<= 0 .cse21) (< .cse20 0) (= 0 (mod v_prenex_29 5)))))) (exists ((v_prenex_9 Int)) (let ((.cse23 (div v_prenex_9 5))) (let ((.cse22 (+ .cse23 1))) (and (<= 0 .cse22) (<= (mod .cse22 26) (+ c_~a12~0 15)) (not (= 0 (mod .cse23 26))) (< v_prenex_9 0) (< .cse23 0) (<= |c_old(~a12~0)| v_prenex_9) (not (= 0 (mod v_prenex_9 5))))))) (exists ((v_prenex_19 Int)) (let ((.cse24 (div v_prenex_19 5))) (and (<= |c_old(~a12~0)| v_prenex_19) (= 0 (mod (+ .cse24 1) 26)) (<= (mod .cse24 26) (+ c_~a12~0 15)) (= 0 (mod v_prenex_19 5)) (<= 0 .cse24)))) (exists ((v_prenex_16 Int)) (let ((.cse27 (div v_prenex_16 5))) (let ((.cse25 (+ .cse27 1)) (.cse26 (mod .cse27 26))) (and (< .cse25 0) (= 0 .cse26) (= 0 (mod v_prenex_16 5)) (not (= 0 (mod .cse25 26))) (<= .cse26 (+ c_~a12~0 15)) (<= |c_old(~a12~0)| v_prenex_16))))) (exists ((v_prenex_25 Int)) (let ((.cse30 (div v_prenex_25 5))) (let ((.cse28 (+ .cse30 1)) (.cse29 (mod .cse30 26))) (and (not (= 0 (mod .cse28 26))) (= 0 .cse29) (<= 0 v_prenex_25) (< .cse28 0) (<= |c_old(~a12~0)| v_prenex_25) (<= .cse29 (+ c_~a12~0 15)))))) (exists ((v_prenex_11 Int)) (let ((.cse32 (div v_prenex_11 5))) (let ((.cse31 (+ .cse32 1))) (and (not (= 0 (mod .cse31 26))) (<= (mod .cse32 26) (+ c_~a12~0 15)) (<= 0 v_prenex_11) (<= 0 .cse32) (<= |c_old(~a12~0)| v_prenex_11) (< .cse31 0))))) (exists ((v_prenex_24 Int)) (let ((.cse33 (div v_prenex_24 5))) (and (<= (mod .cse33 26) (+ c_~a12~0 15)) (= 0 (mod v_prenex_24 5)) (<= |c_old(~a12~0)| v_prenex_24) (<= 0 (+ .cse33 1)) (<= 0 .cse33)))) (exists ((v_prenex_12 Int)) (let ((.cse35 (div v_prenex_12 5))) (let ((.cse34 (mod (+ .cse35 1) 26))) (and (<= |c_old(~a12~0)| v_prenex_12) (<= .cse34 (+ c_~a12~0 15)) (= 0 .cse34) (<= 0 .cse35) (not (= 0 (mod v_prenex_12 5))) (< v_prenex_12 0))))) (exists ((v_prenex_26 Int)) (let ((.cse37 (div v_prenex_26 5))) (let ((.cse36 (mod .cse37 26))) (and (<= .cse36 (+ c_~a12~0 41)) (= 0 (mod v_prenex_26 5)) (not (= 0 .cse36)) (<= |c_old(~a12~0)| v_prenex_26) (<= 0 (+ .cse37 1)) (< .cse37 0))))) (exists ((v_prenex_7 Int)) (let ((.cse38 (div v_prenex_7 5))) (let ((.cse39 (mod .cse38 26))) (and (<= 0 v_prenex_7) (<= 0 (+ .cse38 1)) (not (= 0 .cse39)) (< .cse38 0) (<= .cse39 (+ c_~a12~0 41)) (<= |c_old(~a12~0)| v_prenex_7))))) (exists ((v_prenex_13 Int)) (let ((.cse42 (div v_prenex_13 5))) (let ((.cse40 (+ .cse42 1))) (let ((.cse41 (mod .cse40 26))) (and (< .cse40 0) (<= |c_old(~a12~0)| v_prenex_13) (not (= 0 .cse41)) (<= .cse41 (+ c_~a12~0 41)) (< v_prenex_13 0) (<= 0 .cse42) (not (= 0 (mod v_prenex_13 5)))))))) (exists ((v_prenex_23 Int)) (let ((.cse43 (div v_prenex_23 5))) (let ((.cse44 (+ .cse43 1))) (and (< v_prenex_23 0) (<= |c_old(~a12~0)| v_prenex_23) (not (= 0 (mod v_prenex_23 5))) (<= 0 .cse43) (<= (mod .cse44 26) (+ c_~a12~0 15)) (<= 0 .cse44))))) (exists ((v_prenex_8 Int)) (let ((.cse46 (div v_prenex_8 5))) (let ((.cse45 (mod .cse46 26))) (and (= 0 .cse45) (<= |c_old(~a12~0)| v_prenex_8) (<= 0 (+ .cse46 1)) (= 0 (mod v_prenex_8 5)) (<= .cse45 (+ c_~a12~0 15)))))) (exists ((v_prenex_20 Int)) (let ((.cse48 (div v_prenex_20 5))) (let ((.cse47 (mod .cse48 26))) (and (= 0 .cse47) (= 0 (mod (+ .cse48 1) 26)) (<= 0 v_prenex_20) (<= |c_old(~a12~0)| v_prenex_20) (<= .cse47 (+ c_~a12~0 15)))))) (exists ((v_prenex_28 Int)) (let ((.cse50 (div v_prenex_28 5))) (let ((.cse49 (+ .cse50 1))) (and (<= |c_old(~a12~0)| v_prenex_28) (<= 0 .cse49) (not (= 0 (mod v_prenex_28 5))) (<= (mod .cse49 26) (+ c_~a12~0 15)) (= 0 (mod .cse50 26)) (< v_prenex_28 0))))) (exists ((v_prenex_22 Int)) (let ((.cse52 (div v_prenex_22 5))) (let ((.cse51 (mod (+ .cse52 1) 26))) (and (<= |c_old(~a12~0)| v_prenex_22) (<= .cse51 (+ c_~a12~0 15)) (< v_prenex_22 0) (not (= 0 (mod .cse52 26))) (< .cse52 0) (= 0 .cse51) (not (= 0 (mod v_prenex_22 5))))))) (exists ((v_prenex_15 Int)) (let ((.cse55 (div v_prenex_15 5))) (let ((.cse53 (mod .cse55 26)) (.cse54 (+ .cse55 1))) (and (not (= 0 .cse53)) (< .cse54 0) (< .cse55 0) (<= .cse53 (+ c_~a12~0 41)) (not (= 0 (mod .cse54 26))) (= 0 (mod v_prenex_15 5)) (<= |c_old(~a12~0)| v_prenex_15))))) (exists ((v_prenex_6 Int)) (let ((.cse56 (div v_prenex_6 5))) (and (<= |c_old(~a12~0)| v_prenex_6) (<= 0 .cse56) (<= 0 v_prenex_6) (<= (mod .cse56 26) (+ c_~a12~0 15)) (= 0 (mod (+ .cse56 1) 26)))))) is different from true [2018-11-23 09:59:45,163 INFO L134 CoverageAnalysis]: Checked inductivity of 11670 backedges. 5141 proven. 138 refuted. 0 times theorem prover too weak. 6383 trivial. 8 not checked. [2018-11-23 09:59:45,164 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 09:59:46,182 INFO L134 CoverageAnalysis]: Checked inductivity of 11670 backedges. 507 proven. 0 refuted. 0 times theorem prover too weak. 11163 trivial. 0 not checked. [2018-11-23 09:59:46,198 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-23 09:59:46,198 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [16, 11] total 24 [2018-11-23 09:59:46,198 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 09:59:46,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 09:59:46,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 09:59:46,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=420, Unknown=2, NotChecked=42, Total=552 [2018-11-23 09:59:46,199 INFO L87 Difference]: Start difference. First operand 4099 states and 4219 transitions. Second operand 3 states. [2018-11-23 09:59:46,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:59:46,447 INFO L93 Difference]: Finished difference Result 8002 states and 8244 transitions. [2018-11-23 09:59:46,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 09:59:46,447 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1955 [2018-11-23 09:59:46,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:59:46,448 INFO L225 Difference]: With dead ends: 8002 [2018-11-23 09:59:46,448 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 09:59:46,452 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3927 GetRequests, 3901 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=88, Invalid=420, Unknown=2, NotChecked=42, Total=552 [2018-11-23 09:59:46,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 09:59:46,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 09:59:46,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 09:59:46,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 09:59:46,453 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1955 [2018-11-23 09:59:46,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:59:46,453 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 09:59:46,453 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 09:59:46,453 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 09:59:46,453 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 09:59:46,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 09:59:46,678 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 09:59:46,693 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 09:59:46,694 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 09:59:47,559 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 09:59:47,591 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 09:59:47,928 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 09:59:48,258 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 09:59:48,271 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 09:59:48,379 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 09:59:49,089 WARN L180 SmtUtils]: Spent 2.38 s on a formula simplification. DAG size of input: 1169 DAG size of output: 905 [2018-11-23 09:59:49,823 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 09:59:49,898 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 09:59:49,921 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 09:59:49,953 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 09:59:50,298 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 09:59:50,390 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 09:59:50,819 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 09:59:51,564 WARN L180 SmtUtils]: Spent 2.47 s on a formula simplification. DAG size of input: 1154 DAG size of output: 881 [2018-11-23 09:59:53,143 WARN L180 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 391 DAG size of output: 116 [2018-11-23 10:00:00,058 WARN L180 SmtUtils]: Spent 6.90 s on a formula simplification. DAG size of input: 900 DAG size of output: 105 [2018-11-23 10:00:06,530 WARN L180 SmtUtils]: Spent 6.47 s on a formula simplification. DAG size of input: 873 DAG size of output: 108 [2018-11-23 10:00:06,532 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-23 10:00:06,532 INFO L444 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~a12~0 |old(~a12~0)|) (= ~a24~0 |old(~a24~0)|) (= ~a21~0 |old(~a21~0)|) (= |old(~a15~0)| ~a15~0)) [2018-11-23 10:00:06,532 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 10:00:06,533 INFO L448 ceAbstractionStarter]: For program point L432(lines 432 870) no Hoare annotation was computed. [2018-11-23 10:00:06,533 INFO L448 ceAbstractionStarter]: For program point L366(lines 366 870) no Hoare annotation was computed. [2018-11-23 10:00:06,533 INFO L448 ceAbstractionStarter]: For program point L168-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,533 INFO L448 ceAbstractionStarter]: For program point L102-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,533 INFO L448 ceAbstractionStarter]: For program point L36-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,533 INFO L448 ceAbstractionStarter]: For program point L235(lines 235 870) no Hoare annotation was computed. [2018-11-23 10:00:06,533 INFO L448 ceAbstractionStarter]: For program point L169(line 169) no Hoare annotation was computed. [2018-11-23 10:00:06,533 INFO L448 ceAbstractionStarter]: For program point L103(line 103) no Hoare annotation was computed. [2018-11-23 10:00:06,533 INFO L448 ceAbstractionStarter]: For program point L37(line 37) no Hoare annotation was computed. [2018-11-23 10:00:06,533 INFO L448 ceAbstractionStarter]: For program point L764(lines 764 870) no Hoare annotation was computed. [2018-11-23 10:00:06,533 INFO L448 ceAbstractionStarter]: For program point L632(lines 632 870) no Hoare annotation was computed. [2018-11-23 10:00:06,533 INFO L448 ceAbstractionStarter]: For program point L500(lines 500 870) no Hoare annotation was computed. [2018-11-23 10:00:06,533 INFO L448 ceAbstractionStarter]: For program point L831(lines 831 870) no Hoare annotation was computed. [2018-11-23 10:00:06,533 INFO L448 ceAbstractionStarter]: For program point L171-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,533 INFO L448 ceAbstractionStarter]: For program point L105-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,533 INFO L448 ceAbstractionStarter]: For program point L39-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,533 INFO L448 ceAbstractionStarter]: For program point L700(lines 700 870) no Hoare annotation was computed. [2018-11-23 10:00:06,533 INFO L448 ceAbstractionStarter]: For program point L568(lines 568 870) no Hoare annotation was computed. [2018-11-23 10:00:06,533 INFO L448 ceAbstractionStarter]: For program point L172(line 172) no Hoare annotation was computed. [2018-11-23 10:00:06,533 INFO L448 ceAbstractionStarter]: For program point L106(line 106) no Hoare annotation was computed. [2018-11-23 10:00:06,533 INFO L448 ceAbstractionStarter]: For program point L40(line 40) no Hoare annotation was computed. [2018-11-23 10:00:06,534 INFO L448 ceAbstractionStarter]: For program point L305(lines 305 870) no Hoare annotation was computed. [2018-11-23 10:00:06,534 INFO L448 ceAbstractionStarter]: For program point L438(lines 438 870) no Hoare annotation was computed. [2018-11-23 10:00:06,534 INFO L448 ceAbstractionStarter]: For program point L372(lines 372 870) no Hoare annotation was computed. [2018-11-23 10:00:06,534 INFO L448 ceAbstractionStarter]: For program point L174-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,534 INFO L448 ceAbstractionStarter]: For program point L108-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,534 INFO L448 ceAbstractionStarter]: For program point L42-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,534 INFO L448 ceAbstractionStarter]: For program point L241(lines 241 870) no Hoare annotation was computed. [2018-11-23 10:00:06,534 INFO L448 ceAbstractionStarter]: For program point L175(line 175) no Hoare annotation was computed. [2018-11-23 10:00:06,534 INFO L448 ceAbstractionStarter]: For program point L109(line 109) no Hoare annotation was computed. [2018-11-23 10:00:06,534 INFO L448 ceAbstractionStarter]: For program point L43(line 43) no Hoare annotation was computed. [2018-11-23 10:00:06,534 INFO L448 ceAbstractionStarter]: For program point L638(lines 638 870) no Hoare annotation was computed. [2018-11-23 10:00:06,534 INFO L448 ceAbstractionStarter]: For program point L506(lines 506 870) no Hoare annotation was computed. [2018-11-23 10:00:06,534 INFO L448 ceAbstractionStarter]: For program point L837(lines 837 870) no Hoare annotation was computed. [2018-11-23 10:00:06,534 INFO L448 ceAbstractionStarter]: For program point L771(lines 771 870) no Hoare annotation was computed. [2018-11-23 10:00:06,535 INFO L448 ceAbstractionStarter]: For program point L573(lines 573 870) no Hoare annotation was computed. [2018-11-23 10:00:06,535 INFO L448 ceAbstractionStarter]: For program point L177-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,535 INFO L448 ceAbstractionStarter]: For program point L111-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,535 INFO L448 ceAbstractionStarter]: For program point L45-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,535 INFO L448 ceAbstractionStarter]: For program point L706(lines 706 870) no Hoare annotation was computed. [2018-11-23 10:00:06,535 INFO L448 ceAbstractionStarter]: For program point L178(line 178) no Hoare annotation was computed. [2018-11-23 10:00:06,535 INFO L448 ceAbstractionStarter]: For program point L112(line 112) no Hoare annotation was computed. [2018-11-23 10:00:06,535 INFO L448 ceAbstractionStarter]: For program point L46(line 46) no Hoare annotation was computed. [2018-11-23 10:00:06,535 INFO L448 ceAbstractionStarter]: For program point L311(lines 311 870) no Hoare annotation was computed. [2018-11-23 10:00:06,535 INFO L448 ceAbstractionStarter]: For program point L444(lines 444 870) no Hoare annotation was computed. [2018-11-23 10:00:06,535 INFO L448 ceAbstractionStarter]: For program point L378(lines 378 870) no Hoare annotation was computed. [2018-11-23 10:00:06,535 INFO L448 ceAbstractionStarter]: For program point L180-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,536 INFO L448 ceAbstractionStarter]: For program point L114-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,536 INFO L448 ceAbstractionStarter]: For program point L48-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,536 INFO L448 ceAbstractionStarter]: For program point L247(lines 247 870) no Hoare annotation was computed. [2018-11-23 10:00:06,536 INFO L448 ceAbstractionStarter]: For program point L181(line 181) no Hoare annotation was computed. [2018-11-23 10:00:06,536 INFO L448 ceAbstractionStarter]: For program point L115(line 115) no Hoare annotation was computed. [2018-11-23 10:00:06,536 INFO L448 ceAbstractionStarter]: For program point L49(line 49) no Hoare annotation was computed. [2018-11-23 10:00:06,536 INFO L448 ceAbstractionStarter]: For program point L842(lines 842 870) no Hoare annotation was computed. [2018-11-23 10:00:06,536 INFO L448 ceAbstractionStarter]: For program point L644(lines 644 870) no Hoare annotation was computed. [2018-11-23 10:00:06,536 INFO L448 ceAbstractionStarter]: For program point L512(lines 512 870) no Hoare annotation was computed. [2018-11-23 10:00:06,536 INFO L448 ceAbstractionStarter]: For program point L777(lines 777 870) no Hoare annotation was computed. [2018-11-23 10:00:06,536 INFO L448 ceAbstractionStarter]: For program point L579(lines 579 870) no Hoare annotation was computed. [2018-11-23 10:00:06,536 INFO L448 ceAbstractionStarter]: For program point L183-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,536 INFO L448 ceAbstractionStarter]: For program point L117-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,537 INFO L448 ceAbstractionStarter]: For program point L51-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,537 INFO L448 ceAbstractionStarter]: For program point calculate_outputEXIT(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,537 INFO L448 ceAbstractionStarter]: For program point L712(lines 712 870) no Hoare annotation was computed. [2018-11-23 10:00:06,537 INFO L448 ceAbstractionStarter]: For program point L184(line 184) no Hoare annotation was computed. [2018-11-23 10:00:06,537 INFO L448 ceAbstractionStarter]: For program point L118(line 118) no Hoare annotation was computed. [2018-11-23 10:00:06,537 INFO L448 ceAbstractionStarter]: For program point L52(line 52) no Hoare annotation was computed. [2018-11-23 10:00:06,537 INFO L448 ceAbstractionStarter]: For program point L449(lines 449 870) no Hoare annotation was computed. [2018-11-23 10:00:06,537 INFO L448 ceAbstractionStarter]: For program point L317(lines 317 870) no Hoare annotation was computed. [2018-11-23 10:00:06,537 INFO L448 ceAbstractionStarter]: For program point L384(lines 384 870) no Hoare annotation was computed. [2018-11-23 10:00:06,537 INFO L448 ceAbstractionStarter]: For program point L252(lines 252 870) no Hoare annotation was computed. [2018-11-23 10:00:06,537 INFO L448 ceAbstractionStarter]: For program point L186-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,537 INFO L448 ceAbstractionStarter]: For program point L120-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,538 INFO L448 ceAbstractionStarter]: For program point L54-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,538 INFO L448 ceAbstractionStarter]: For program point L187(line 187) no Hoare annotation was computed. [2018-11-23 10:00:06,538 INFO L448 ceAbstractionStarter]: For program point L121(line 121) no Hoare annotation was computed. [2018-11-23 10:00:06,538 INFO L448 ceAbstractionStarter]: For program point L55(line 55) no Hoare annotation was computed. [2018-11-23 10:00:06,538 INFO L448 ceAbstractionStarter]: For program point L848(lines 848 870) no Hoare annotation was computed. [2018-11-23 10:00:06,538 INFO L448 ceAbstractionStarter]: For program point L650(lines 650 870) no Hoare annotation was computed. [2018-11-23 10:00:06,538 INFO L448 ceAbstractionStarter]: For program point L518(lines 518 870) no Hoare annotation was computed. [2018-11-23 10:00:06,538 INFO L448 ceAbstractionStarter]: For program point L783(lines 783 870) no Hoare annotation was computed. [2018-11-23 10:00:06,538 INFO L448 ceAbstractionStarter]: For program point L585(lines 585 870) no Hoare annotation was computed. [2018-11-23 10:00:06,538 INFO L448 ceAbstractionStarter]: For program point L189-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,538 INFO L448 ceAbstractionStarter]: For program point L123-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,538 INFO L448 ceAbstractionStarter]: For program point L57-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,538 INFO L448 ceAbstractionStarter]: For program point L718(lines 718 870) no Hoare annotation was computed. [2018-11-23 10:00:06,539 INFO L448 ceAbstractionStarter]: For program point L454(lines 454 870) no Hoare annotation was computed. [2018-11-23 10:00:06,539 INFO L448 ceAbstractionStarter]: For program point L190(line 190) no Hoare annotation was computed. [2018-11-23 10:00:06,539 INFO L448 ceAbstractionStarter]: For program point L124(line 124) no Hoare annotation was computed. [2018-11-23 10:00:06,539 INFO L448 ceAbstractionStarter]: For program point L58(line 58) no Hoare annotation was computed. [2018-11-23 10:00:06,539 INFO L448 ceAbstractionStarter]: For program point L323(lines 323 870) no Hoare annotation was computed. [2018-11-23 10:00:06,539 INFO L444 ceAbstractionStarter]: At program point calculate_outputENTRY(lines 20 872) the Hoare annotation is: (let ((.cse27 (= 8 ~a15~0)) (.cse23 (= ~a24~0 1)) (.cse7 (= 8 |old(~a15~0)|)) (.cse13 (= 1 ~a24~0)) (.cse11 (= ~a12~0 |old(~a12~0)|)) (.cse12 (= ~a21~0 |old(~a21~0)|)) (.cse22 (= |old(~a15~0)| ~a15~0)) (.cse4 (= 6 |old(~a21~0)|)) (.cse16 (= 6 |old(~a15~0)|))) (let ((.cse0 (not .cse16)) (.cse9 (not .cse4)) (.cse10 (and .cse11 (= ~a24~0 |old(~a24~0)|) .cse12 .cse22)) (.cse24 (+ |old(~a12~0)| 49)) (.cse8 (< 6 |old(~a21~0)|)) (.cse21 (< 11 |old(~a12~0)|)) (.cse5 (< 7 |old(~a15~0)|)) (.cse15 (not (= 10 |old(~a21~0)|))) (.cse26 (= 10 ~a21~0)) (.cse1 (and .cse11 .cse12 .cse22 .cse13)) (.cse25 (not (= 8 |old(~a21~0)|))) (.cse14 (< 76 |old(~a12~0)|)) (.cse18 (not .cse7)) (.cse20 (and .cse11 .cse12 .cse27 .cse23)) (.cse19 (= |calculate_output_#in~input| 0)) (.cse6 (<= (+ |old(~a12~0)| 43) 0)) (.cse17 (= 0 |old(~a21~0)|)) (.cse2 (not (= 1 |old(~a24~0)|))) (.cse3 (< 9 |old(~a21~0)|))) (and (or .cse0 .cse1 .cse2 .cse3 (<= |old(~a12~0)| 80)) (or .cse4 .cse1 .cse2 .cse3 .cse5) (or .cse6 (< |old(~a15~0)| 7) .cse2 .cse7 .cse8 .cse1) (or .cse9 .cse10 .cse2 (not (= 5 |old(~a15~0)|))) (or .cse9 .cse2 (not (= 7 |old(~a15~0)|)) (and .cse11 .cse12 (= 7 ~a15~0) .cse13)) (or .cse0 .cse9 .cse1 .cse14 .cse2) (or .cse4 .cse6 .cse2 .cse7 .cse3 .cse1) (or (and (and .cse11 .cse13) .cse12 (= ~a15~0 |old(~a15~0)|)) (or .cse15 .cse2 .cse16) .cse7) (or .cse17 .cse2 .cse18 .cse19 .cse8 .cse20) (or .cse6 .cse20 (or .cse17 .cse2 .cse21 .cse18 .cse19)) (or (and (= (+ ~a12~0 49) 0) (= |old(~a21~0)| ~a21~0) .cse22 .cse23) (or (or .cse18 .cse19 (not (= 7 |old(~a21~0)|)) (not (= 0 .cse24))) .cse2)) (or .cse10 (< 0 .cse24) .cse16 .cse8 .cse5) (or .cse20 .cse6 .cse2 .cse18 (< 73282 |old(~a12~0)|) .cse19 .cse25) (or (and .cse11 .cse22 .cse13 .cse26) .cse15 .cse6 .cse2 .cse21 .cse5) (or (or .cse15 .cse19) (and .cse11 .cse27 .cse23 .cse26) .cse2 .cse18) (or .cse2 (< 0 (+ |old(~a12~0)| 526767)) .cse7 .cse1 .cse25) (or .cse14 .cse18 .cse20 .cse19 .cse6 .cse17 .cse2 .cse3)))) [2018-11-23 10:00:06,539 INFO L448 ceAbstractionStarter]: For program point L390(lines 390 870) no Hoare annotation was computed. [2018-11-23 10:00:06,539 INFO L448 ceAbstractionStarter]: For program point L258(lines 258 870) no Hoare annotation was computed. [2018-11-23 10:00:06,539 INFO L448 ceAbstractionStarter]: For program point L192-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,539 INFO L448 ceAbstractionStarter]: For program point L126-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,540 INFO L448 ceAbstractionStarter]: For program point L60-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,540 INFO L448 ceAbstractionStarter]: For program point L193(line 193) no Hoare annotation was computed. [2018-11-23 10:00:06,540 INFO L448 ceAbstractionStarter]: For program point L127(line 127) no Hoare annotation was computed. [2018-11-23 10:00:06,540 INFO L448 ceAbstractionStarter]: For program point L61(line 61) no Hoare annotation was computed. [2018-11-23 10:00:06,540 INFO L448 ceAbstractionStarter]: For program point L854(lines 854 870) no Hoare annotation was computed. [2018-11-23 10:00:06,540 INFO L448 ceAbstractionStarter]: For program point L656(lines 656 870) no Hoare annotation was computed. [2018-11-23 10:00:06,540 INFO L448 ceAbstractionStarter]: For program point L524(lines 524 870) no Hoare annotation was computed. [2018-11-23 10:00:06,540 INFO L448 ceAbstractionStarter]: For program point L789(lines 789 870) no Hoare annotation was computed. [2018-11-23 10:00:06,540 INFO L448 ceAbstractionStarter]: For program point L591(lines 591 870) no Hoare annotation was computed. [2018-11-23 10:00:06,540 INFO L448 ceAbstractionStarter]: For program point L195-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,540 INFO L448 ceAbstractionStarter]: For program point L129-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,540 INFO L448 ceAbstractionStarter]: For program point L63-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,540 INFO L448 ceAbstractionStarter]: For program point L724(lines 724 870) no Hoare annotation was computed. [2018-11-23 10:00:06,540 INFO L448 ceAbstractionStarter]: For program point L460(lines 460 870) no Hoare annotation was computed. [2018-11-23 10:00:06,540 INFO L448 ceAbstractionStarter]: For program point L196(line 196) no Hoare annotation was computed. [2018-11-23 10:00:06,540 INFO L448 ceAbstractionStarter]: For program point L130(line 130) no Hoare annotation was computed. [2018-11-23 10:00:06,540 INFO L448 ceAbstractionStarter]: For program point L64(line 64) no Hoare annotation was computed. [2018-11-23 10:00:06,540 INFO L448 ceAbstractionStarter]: For program point L329(lines 329 870) no Hoare annotation was computed. [2018-11-23 10:00:06,540 INFO L448 ceAbstractionStarter]: For program point L396(lines 396 870) no Hoare annotation was computed. [2018-11-23 10:00:06,540 INFO L448 ceAbstractionStarter]: For program point L264(lines 264 870) no Hoare annotation was computed. [2018-11-23 10:00:06,540 INFO L448 ceAbstractionStarter]: For program point L198-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,540 INFO L448 ceAbstractionStarter]: For program point L132-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,540 INFO L448 ceAbstractionStarter]: For program point L66-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,540 INFO L448 ceAbstractionStarter]: For program point L859(lines 859 870) no Hoare annotation was computed. [2018-11-23 10:00:06,540 INFO L448 ceAbstractionStarter]: For program point L199(line 199) no Hoare annotation was computed. [2018-11-23 10:00:06,540 INFO L448 ceAbstractionStarter]: For program point L133(line 133) no Hoare annotation was computed. [2018-11-23 10:00:06,541 INFO L448 ceAbstractionStarter]: For program point L67(line 67) no Hoare annotation was computed. [2018-11-23 10:00:06,541 INFO L448 ceAbstractionStarter]: For program point L662(lines 662 870) no Hoare annotation was computed. [2018-11-23 10:00:06,541 INFO L448 ceAbstractionStarter]: For program point L530(lines 530 870) no Hoare annotation was computed. [2018-11-23 10:00:06,541 INFO L448 ceAbstractionStarter]: For program point L795(lines 795 870) no Hoare annotation was computed. [2018-11-23 10:00:06,541 INFO L448 ceAbstractionStarter]: For program point L597(lines 597 870) no Hoare annotation was computed. [2018-11-23 10:00:06,541 INFO L448 ceAbstractionStarter]: For program point L201-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,541 INFO L448 ceAbstractionStarter]: For program point L135-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,541 INFO L448 ceAbstractionStarter]: For program point L69-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,541 INFO L448 ceAbstractionStarter]: For program point L730(lines 730 870) no Hoare annotation was computed. [2018-11-23 10:00:06,541 INFO L448 ceAbstractionStarter]: For program point L202(line 202) no Hoare annotation was computed. [2018-11-23 10:00:06,541 INFO L448 ceAbstractionStarter]: For program point L136(line 136) no Hoare annotation was computed. [2018-11-23 10:00:06,541 INFO L448 ceAbstractionStarter]: For program point L70(line 70) no Hoare annotation was computed. [2018-11-23 10:00:06,541 INFO L448 ceAbstractionStarter]: For program point L467(lines 467 870) no Hoare annotation was computed. [2018-11-23 10:00:06,541 INFO L448 ceAbstractionStarter]: For program point L335(lines 335 870) no Hoare annotation was computed. [2018-11-23 10:00:06,541 INFO L448 ceAbstractionStarter]: For program point L269(lines 269 870) no Hoare annotation was computed. [2018-11-23 10:00:06,541 INFO L448 ceAbstractionStarter]: For program point L402(lines 402 870) no Hoare annotation was computed. [2018-11-23 10:00:06,541 INFO L448 ceAbstractionStarter]: For program point L138-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,541 INFO L448 ceAbstractionStarter]: For program point L72-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,541 INFO L448 ceAbstractionStarter]: For program point L865(lines 865 870) no Hoare annotation was computed. [2018-11-23 10:00:06,541 INFO L448 ceAbstractionStarter]: For program point L139(line 139) no Hoare annotation was computed. [2018-11-23 10:00:06,541 INFO L448 ceAbstractionStarter]: For program point L73(line 73) no Hoare annotation was computed. [2018-11-23 10:00:06,541 INFO L448 ceAbstractionStarter]: For program point L668(lines 668 870) no Hoare annotation was computed. [2018-11-23 10:00:06,541 INFO L448 ceAbstractionStarter]: For program point L536(lines 536 870) no Hoare annotation was computed. [2018-11-23 10:00:06,541 INFO L448 ceAbstractionStarter]: For program point L801(lines 801 870) no Hoare annotation was computed. [2018-11-23 10:00:06,541 INFO L448 ceAbstractionStarter]: For program point L735(lines 735 870) no Hoare annotation was computed. [2018-11-23 10:00:06,541 INFO L448 ceAbstractionStarter]: For program point L603(lines 603 870) no Hoare annotation was computed. [2018-11-23 10:00:06,542 INFO L448 ceAbstractionStarter]: For program point L141-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,542 INFO L448 ceAbstractionStarter]: For program point L75-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,542 INFO L448 ceAbstractionStarter]: For program point L472(lines 472 870) no Hoare annotation was computed. [2018-11-23 10:00:06,542 INFO L448 ceAbstractionStarter]: For program point L142(line 142) no Hoare annotation was computed. [2018-11-23 10:00:06,542 INFO L448 ceAbstractionStarter]: For program point L76(line 76) no Hoare annotation was computed. [2018-11-23 10:00:06,542 INFO L448 ceAbstractionStarter]: For program point L341(lines 341 870) no Hoare annotation was computed. [2018-11-23 10:00:06,542 INFO L448 ceAbstractionStarter]: For program point L275(lines 275 870) no Hoare annotation was computed. [2018-11-23 10:00:06,542 INFO L448 ceAbstractionStarter]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 100) no Hoare annotation was computed. [2018-11-23 10:00:06,542 INFO L448 ceAbstractionStarter]: For program point L408(lines 408 870) no Hoare annotation was computed. [2018-11-23 10:00:06,542 INFO L448 ceAbstractionStarter]: For program point L144-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,542 INFO L448 ceAbstractionStarter]: For program point L78-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,542 INFO L448 ceAbstractionStarter]: For program point L541(lines 541 870) no Hoare annotation was computed. [2018-11-23 10:00:06,542 INFO L448 ceAbstractionStarter]: For program point L211(lines 211 870) no Hoare annotation was computed. [2018-11-23 10:00:06,542 INFO L448 ceAbstractionStarter]: For program point L145(line 145) no Hoare annotation was computed. [2018-11-23 10:00:06,542 INFO L448 ceAbstractionStarter]: For program point L79(line 79) no Hoare annotation was computed. [2018-11-23 10:00:06,542 INFO L448 ceAbstractionStarter]: For program point L674(lines 674 870) no Hoare annotation was computed. [2018-11-23 10:00:06,542 INFO L448 ceAbstractionStarter]: For program point L807(lines 807 870) no Hoare annotation was computed. [2018-11-23 10:00:06,542 INFO L448 ceAbstractionStarter]: For program point L741(lines 741 870) no Hoare annotation was computed. [2018-11-23 10:00:06,542 INFO L448 ceAbstractionStarter]: For program point L609(lines 609 870) no Hoare annotation was computed. [2018-11-23 10:00:06,542 INFO L448 ceAbstractionStarter]: For program point L147-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,542 INFO L448 ceAbstractionStarter]: For program point L81-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,542 INFO L448 ceAbstractionStarter]: For program point L478(lines 478 870) no Hoare annotation was computed. [2018-11-23 10:00:06,542 INFO L448 ceAbstractionStarter]: For program point L280(lines 280 870) no Hoare annotation was computed. [2018-11-23 10:00:06,542 INFO L448 ceAbstractionStarter]: For program point L148(line 148) no Hoare annotation was computed. [2018-11-23 10:00:06,542 INFO L448 ceAbstractionStarter]: For program point L82(line 82) no Hoare annotation was computed. [2018-11-23 10:00:06,543 INFO L448 ceAbstractionStarter]: For program point L677(lines 677 870) no Hoare annotation was computed. [2018-11-23 10:00:06,543 INFO L448 ceAbstractionStarter]: For program point L347(lines 347 870) no Hoare annotation was computed. [2018-11-23 10:00:06,543 INFO L448 ceAbstractionStarter]: For program point L414(lines 414 870) no Hoare annotation was computed. [2018-11-23 10:00:06,543 INFO L448 ceAbstractionStarter]: For program point L150-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,543 INFO L448 ceAbstractionStarter]: For program point L84-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,543 INFO L448 ceAbstractionStarter]: For program point calculate_outputFINAL(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,543 INFO L448 ceAbstractionStarter]: For program point L547(lines 547 870) no Hoare annotation was computed. [2018-11-23 10:00:06,543 INFO L448 ceAbstractionStarter]: For program point L217(lines 217 870) no Hoare annotation was computed. [2018-11-23 10:00:06,543 INFO L448 ceAbstractionStarter]: For program point L151(line 151) no Hoare annotation was computed. [2018-11-23 10:00:06,543 INFO L448 ceAbstractionStarter]: For program point L85(line 85) no Hoare annotation was computed. [2018-11-23 10:00:06,543 INFO L448 ceAbstractionStarter]: For program point L747(lines 747 870) no Hoare annotation was computed. [2018-11-23 10:00:06,543 INFO L448 ceAbstractionStarter]: For program point L615(lines 615 870) no Hoare annotation was computed. [2018-11-23 10:00:06,543 INFO L448 ceAbstractionStarter]: For program point L153-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,543 INFO L448 ceAbstractionStarter]: For program point L87-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,543 INFO L448 ceAbstractionStarter]: For program point L21(lines 21 23) no Hoare annotation was computed. [2018-11-23 10:00:06,543 INFO L448 ceAbstractionStarter]: For program point L21-2(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,543 INFO L448 ceAbstractionStarter]: For program point L814(lines 814 870) no Hoare annotation was computed. [2018-11-23 10:00:06,543 INFO L448 ceAbstractionStarter]: For program point L484(lines 484 870) no Hoare annotation was computed. [2018-11-23 10:00:06,543 INFO L448 ceAbstractionStarter]: For program point L286(lines 286 870) no Hoare annotation was computed. [2018-11-23 10:00:06,543 INFO L448 ceAbstractionStarter]: For program point L154(line 154) no Hoare annotation was computed. [2018-11-23 10:00:06,543 INFO L448 ceAbstractionStarter]: For program point L88(line 88) no Hoare annotation was computed. [2018-11-23 10:00:06,543 INFO L448 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-11-23 10:00:06,543 INFO L448 ceAbstractionStarter]: For program point L683(lines 683 870) no Hoare annotation was computed. [2018-11-23 10:00:06,543 INFO L448 ceAbstractionStarter]: For program point L353(lines 353 870) no Hoare annotation was computed. [2018-11-23 10:00:06,543 INFO L448 ceAbstractionStarter]: For program point L552(lines 552 870) no Hoare annotation was computed. [2018-11-23 10:00:06,543 INFO L448 ceAbstractionStarter]: For program point L420(lines 420 870) no Hoare annotation was computed. [2018-11-23 10:00:06,544 INFO L448 ceAbstractionStarter]: For program point L156-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,544 INFO L448 ceAbstractionStarter]: For program point L90-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,544 INFO L448 ceAbstractionStarter]: For program point L24-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,544 INFO L448 ceAbstractionStarter]: For program point L223(lines 223 870) no Hoare annotation was computed. [2018-11-23 10:00:06,544 INFO L448 ceAbstractionStarter]: For program point L157(line 157) no Hoare annotation was computed. [2018-11-23 10:00:06,544 INFO L448 ceAbstractionStarter]: For program point L91(line 91) no Hoare annotation was computed. [2018-11-23 10:00:06,544 INFO L448 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-11-23 10:00:06,544 INFO L448 ceAbstractionStarter]: For program point L752(lines 752 870) no Hoare annotation was computed. [2018-11-23 10:00:06,544 INFO L448 ceAbstractionStarter]: For program point L819(lines 819 870) no Hoare annotation was computed. [2018-11-23 10:00:06,544 INFO L448 ceAbstractionStarter]: For program point L621(lines 621 870) no Hoare annotation was computed. [2018-11-23 10:00:06,544 INFO L448 ceAbstractionStarter]: For program point L555(lines 555 870) no Hoare annotation was computed. [2018-11-23 10:00:06,544 INFO L448 ceAbstractionStarter]: For program point L159-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,544 INFO L448 ceAbstractionStarter]: For program point L93-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,544 INFO L448 ceAbstractionStarter]: For program point L27-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,544 INFO L448 ceAbstractionStarter]: For program point L688(lines 688 870) no Hoare annotation was computed. [2018-11-23 10:00:06,544 INFO L448 ceAbstractionStarter]: For program point L490(lines 490 870) no Hoare annotation was computed. [2018-11-23 10:00:06,544 INFO L448 ceAbstractionStarter]: For program point L160(line 160) no Hoare annotation was computed. [2018-11-23 10:00:06,544 INFO L448 ceAbstractionStarter]: For program point L94(line 94) no Hoare annotation was computed. [2018-11-23 10:00:06,544 INFO L448 ceAbstractionStarter]: For program point L28(line 28) no Hoare annotation was computed. [2018-11-23 10:00:06,544 INFO L448 ceAbstractionStarter]: For program point L359(lines 359 870) no Hoare annotation was computed. [2018-11-23 10:00:06,544 INFO L448 ceAbstractionStarter]: For program point L293(lines 293 870) no Hoare annotation was computed. [2018-11-23 10:00:06,545 INFO L448 ceAbstractionStarter]: For program point L426(lines 426 870) no Hoare annotation was computed. [2018-11-23 10:00:06,545 INFO L448 ceAbstractionStarter]: For program point L162-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,545 INFO L448 ceAbstractionStarter]: For program point L96-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,545 INFO L448 ceAbstractionStarter]: For program point L30-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,545 INFO L448 ceAbstractionStarter]: For program point L229(lines 229 870) no Hoare annotation was computed. [2018-11-23 10:00:06,545 INFO L448 ceAbstractionStarter]: For program point L163(line 163) no Hoare annotation was computed. [2018-11-23 10:00:06,545 INFO L448 ceAbstractionStarter]: For program point L97(line 97) no Hoare annotation was computed. [2018-11-23 10:00:06,545 INFO L448 ceAbstractionStarter]: For program point L31(line 31) no Hoare annotation was computed. [2018-11-23 10:00:06,545 INFO L448 ceAbstractionStarter]: For program point L758(lines 758 870) no Hoare annotation was computed. [2018-11-23 10:00:06,545 INFO L448 ceAbstractionStarter]: For program point L626(lines 626 870) no Hoare annotation was computed. [2018-11-23 10:00:06,545 INFO L448 ceAbstractionStarter]: For program point L825(lines 825 870) no Hoare annotation was computed. [2018-11-23 10:00:06,545 INFO L448 ceAbstractionStarter]: For program point L561(lines 561 870) no Hoare annotation was computed. [2018-11-23 10:00:06,545 INFO L448 ceAbstractionStarter]: For program point L495(lines 495 870) no Hoare annotation was computed. [2018-11-23 10:00:06,545 INFO L448 ceAbstractionStarter]: For program point L165-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,545 INFO L448 ceAbstractionStarter]: For program point L99-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,546 INFO L448 ceAbstractionStarter]: For program point L33-1(lines 20 872) no Hoare annotation was computed. [2018-11-23 10:00:06,546 INFO L448 ceAbstractionStarter]: For program point L694(lines 694 870) no Hoare annotation was computed. [2018-11-23 10:00:06,546 INFO L448 ceAbstractionStarter]: For program point L166(line 166) no Hoare annotation was computed. [2018-11-23 10:00:06,546 INFO L448 ceAbstractionStarter]: For program point L100(line 100) no Hoare annotation was computed. [2018-11-23 10:00:06,546 INFO L448 ceAbstractionStarter]: For program point L34(line 34) no Hoare annotation was computed. [2018-11-23 10:00:06,546 INFO L448 ceAbstractionStarter]: For program point L299(lines 299 870) no Hoare annotation was computed. [2018-11-23 10:00:06,546 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 10:00:06,546 INFO L444 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (= 8 ~a15~0) (= (+ ~a12~0 49) 0) (= ~a24~0 1) (= ~a21~0 7)) [2018-11-23 10:00:06,546 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 10:00:06,546 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 10:00:06,546 INFO L444 ceAbstractionStarter]: At program point mainENTRY(lines 874 890) the Hoare annotation is: (or (not (= 8 |old(~a15~0)|)) (and (= (+ ~a12~0 49) 0) (= |old(~a21~0)| ~a21~0) (= |old(~a15~0)| ~a15~0) (= ~a24~0 1)) (not (= 7 |old(~a21~0)|)) (not (= 1 |old(~a24~0)|)) (not (= 0 (+ |old(~a12~0)| 49)))) [2018-11-23 10:00:06,546 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 874 890) no Hoare annotation was computed. [2018-11-23 10:00:06,547 INFO L444 ceAbstractionStarter]: At program point L888(line 888) the Hoare annotation is: (let ((.cse15 (not (= 1 |old(~a24~0)|)))) (let ((.cse17 (not (= main_~input~0 0))) (.cse22 (= ~a15~0 8)) (.cse18 (= ~a24~0 1)) (.cse23 (or (not (= 6 |old(~a21~0)|)) (not (= 5 |old(~a15~0)|)) .cse15))) (let ((.cse2 (not (= ~a15~0 6))) (.cse19 (= 1 ~a24~0)) (.cse21 (= 6 ~a21~0)) (.cse20 (and (not (= ~a21~0 0)) .cse17 .cse22 .cse18 .cse23)) (.cse9 (<= ~a21~0 9))) (let ((.cse0 (and .cse20 .cse9)) (.cse10 (not .cse21)) (.cse4 (<= ~a15~0 7)) (.cse13 (= 10 ~a21~0)) (.cse3 (+ ~a12~0 49)) (.cse16 (<= ~a12~0 11)) (.cse6 (< 0 (+ ~a12~0 43))) (.cse14 (= 6 ~a15~0)) (.cse5 (<= ~a12~0 76)) (.cse8 (and (not (= ~a15~0 9)) .cse19 .cse23)) (.cse1 (<= ~a21~0 6)) (.cse7 (= ~a21~0 8)) (.cse11 (and .cse19 .cse2)) (.cse12 (not .cse22))) (or (and .cse0 .cse1) (and (and .cse2 (<= .cse3 0)) .cse4 .cse1) (and (and .cse5 .cse0) .cse6) (and (and .cse0 .cse7) (<= ~a12~0 73282) .cse6) (not (= 7 |old(~a21~0)|)) (and .cse4 (and .cse8 .cse9 .cse10)) (and .cse11 .cse12 .cse13) (and .cse14 .cse8 (< 80 ~a12~0) .cse1) (and (and .cse9 .cse11 .cse10) .cse12 .cse6) .cse15 (and (and .cse4 .cse16 (= ~a24~0 |old(~a24~0)|)) .cse13 .cse6) (and .cse17 (= 8 ~a15~0) (= .cse3 0) .cse18 (= ~a21~0 7)) (not (= 8 |old(~a15~0)|)) (and (= 7 ~a15~0) (and .cse19 .cse1)) (and .cse20 (= ~a21~0 10)) (not (= 0 (+ |old(~a12~0)| 49))) (and (and (<= 7 ~a15~0) .cse1 .cse11) .cse12 .cse6) (and .cse20 .cse16 .cse6) (and .cse14 (and .cse5 .cse8 .cse1)) (and (and .cse7 .cse11) (<= (+ ~a12~0 526767) 0) .cse12) (and .cse21 .cse19 (= 5 ~a15~0))))))) [2018-11-23 10:00:06,547 INFO L448 ceAbstractionStarter]: For program point L888-1(line 888) no Hoare annotation was computed. [2018-11-23 10:00:06,547 INFO L448 ceAbstractionStarter]: For program point L885(line 885) no Hoare annotation was computed. [2018-11-23 10:00:06,547 INFO L444 ceAbstractionStarter]: At program point L880-2(lines 880 889) the Hoare annotation is: (let ((.cse17 (not (= 1 |old(~a24~0)|)))) (let ((.cse21 (= ~a15~0 8)) (.cse19 (= ~a24~0 1)) (.cse22 (or (not (= 6 |old(~a21~0)|)) (not (= 5 |old(~a15~0)|)) .cse17))) (let ((.cse3 (not (= ~a15~0 6))) (.cse18 (= 1 ~a24~0)) (.cse20 (= 6 ~a21~0)) (.cse10 (and (and (not (= ~a21~0 0)) .cse21 .cse19) .cse22)) (.cse8 (<= ~a21~0 9))) (let ((.cse5 (<= ~a15~0 7)) (.cse1 (and .cse10 .cse8)) (.cse9 (not .cse20)) (.cse11 (<= ~a12~0 11)) (.cse14 (= 10 ~a21~0)) (.cse4 (+ ~a12~0 49)) (.cse0 (< 0 (+ ~a12~0 43))) (.cse15 (= 6 ~a15~0)) (.cse12 (<= ~a12~0 76)) (.cse7 (and (not (= ~a15~0 9)) .cse18 .cse22)) (.cse6 (<= ~a21~0 6)) (.cse2 (= ~a21~0 8)) (.cse13 (and .cse18 .cse3)) (.cse16 (not .cse21))) (or (and (<= ~a12~0 73282) .cse0 (and .cse1 .cse2)) (and (and .cse3 (<= .cse4 0)) .cse5 .cse6) (not (= 7 |old(~a21~0)|)) (and .cse5 (and .cse7 .cse8 .cse9)) (and (and .cse10 .cse11) .cse0) (and (and .cse12 .cse1) .cse0) (and .cse13 .cse14) (and .cse15 .cse7 (< 80 ~a12~0) .cse6) (and (and .cse8 .cse13 .cse9) .cse16 .cse0) .cse17 (and (and .cse11 (= ~a24~0 |old(~a24~0)|)) .cse14 .cse0) (not (= 8 |old(~a15~0)|)) (and (= 7 ~a15~0) (and .cse18 .cse6)) (and (= .cse4 0) (= 8 ~a15~0) .cse19 (= ~a21~0 7)) (and .cse10 .cse6) (not (= 0 (+ |old(~a12~0)| 49))) (and (and (<= 7 ~a15~0) .cse6 .cse13) .cse16 .cse0) (and .cse15 (and .cse12 .cse7 .cse6)) (and (and .cse2 .cse13) (<= (+ ~a12~0 526767) 0) .cse16) (and .cse20 .cse18 (= 5 ~a15~0))))))) [2018-11-23 10:00:06,547 INFO L448 ceAbstractionStarter]: For program point L880-3(lines 874 890) no Hoare annotation was computed. [2018-11-23 10:00:06,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:00:06 BoogieIcfgContainer [2018-11-23 10:00:06,560 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 10:00:06,561 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 10:00:06,561 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 10:00:06,561 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 10:00:06,561 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:56:48" (3/4) ... [2018-11-23 10:00:06,564 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 10:00:06,569 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 10:00:06,570 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure calculate_output [2018-11-23 10:00:06,570 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 10:00:06,585 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-23 10:00:06,586 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-23 10:00:06,610 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((((a12 <= 73282 && 0 < a12 + 43) && ((((!(a21 == 0) && a15 == 8) && a24 == 1) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24)))) && a21 <= 9) && a21 == 8) || (((!(a15 == 6) && a12 + 49 <= 0) && a15 <= 7) && a21 <= 6)) || !(7 == \old(a21))) || (a15 <= 7 && (((!(a15 == 9) && 1 == a24) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24)))) && a21 <= 9) && !(6 == a21))) || (((((!(a21 == 0) && a15 == 8) && a24 == 1) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24)))) && a12 <= 11) && 0 < a12 + 43)) || ((a12 <= 76 && (((!(a21 == 0) && a15 == 8) && a24 == 1) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24)))) && a21 <= 9) && 0 < a12 + 43)) || ((1 == a24 && !(a15 == 6)) && 10 == a21)) || (((6 == a15 && (!(a15 == 9) && 1 == a24) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24)))) && 80 < a12) && a21 <= 6)) || ((((a21 <= 9 && 1 == a24 && !(a15 == 6)) && !(6 == a21)) && !(a15 == 8)) && 0 < a12 + 43)) || !(1 == \old(a24))) || (((a12 <= 11 && a24 == \old(a24)) && 10 == a21) && 0 < a12 + 43)) || !(8 == \old(a15))) || (7 == a15 && 1 == a24 && a21 <= 6)) || (((a12 + 49 == 0 && 8 == a15) && a24 == 1) && a21 == 7)) || ((((!(a21 == 0) && a15 == 8) && a24 == 1) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24)))) && a21 <= 6)) || !(0 == \old(a12) + 49)) || ((((7 <= a15 && a21 <= 6) && 1 == a24 && !(a15 == 6)) && !(a15 == 8)) && 0 < a12 + 43)) || (6 == a15 && (a12 <= 76 && (!(a15 == 9) && 1 == a24) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24)))) && a21 <= 6)) || (((a21 == 8 && 1 == a24 && !(a15 == 6)) && a12 + 526767 <= 0) && !(a15 == 8))) || ((6 == a21 && 1 == a24) && 5 == a15) [2018-11-23 10:00:06,693 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_69266e3f-11a7-4332-973f-b97a7bd9ad1d/bin-2019/utaipan/witness.graphml [2018-11-23 10:00:06,693 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 10:00:06,694 INFO L168 Benchmark]: Toolchain (without parser) took 199673.35 ms. Allocated memory was 1.0 GB in the beginning and 5.0 GB in the end (delta: 3.9 GB). Free memory was 951.1 MB in the beginning and 909.9 MB in the end (delta: 41.2 MB). Peak memory consumption was 4.0 GB. Max. memory is 11.5 GB. [2018-11-23 10:00:06,694 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 10:00:06,695 INFO L168 Benchmark]: CACSL2BoogieTranslator took 413.81 ms. Allocated memory is still 1.0 GB. Free memory was 951.1 MB in the beginning and 908.0 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. [2018-11-23 10:00:06,695 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.91 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.5 MB). Free memory was 908.0 MB in the beginning and 1.1 GB in the end (delta: -205.5 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2018-11-23 10:00:06,695 INFO L168 Benchmark]: Boogie Preprocessor took 48.16 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-23 10:00:06,696 INFO L168 Benchmark]: RCFGBuilder took 1047.23 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 983.4 MB in the end (delta: 124.8 MB). Peak memory consumption was 124.8 MB. Max. memory is 11.5 GB. [2018-11-23 10:00:06,696 INFO L168 Benchmark]: TraceAbstraction took 197944.19 ms. Allocated memory was 1.1 GB in the beginning and 5.0 GB in the end (delta: 3.8 GB). Free memory was 980.7 MB in the beginning and 991.3 MB in the end (delta: -10.6 MB). Peak memory consumption was 4.2 GB. Max. memory is 11.5 GB. [2018-11-23 10:00:06,696 INFO L168 Benchmark]: Witness Printer took 132.55 ms. Allocated memory is still 5.0 GB. Free memory was 991.3 MB in the beginning and 909.9 MB in the end (delta: 81.4 MB). Peak memory consumption was 81.4 MB. Max. memory is 11.5 GB. [2018-11-23 10:00:06,698 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 413.81 ms. Allocated memory is still 1.0 GB. Free memory was 951.1 MB in the beginning and 908.0 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 83.91 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.5 MB). Free memory was 908.0 MB in the beginning and 1.1 GB in the end (delta: -205.5 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 48.16 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1047.23 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 983.4 MB in the end (delta: 124.8 MB). Peak memory consumption was 124.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 197944.19 ms. Allocated memory was 1.1 GB in the beginning and 5.0 GB in the end (delta: 3.8 GB). Free memory was 980.7 MB in the beginning and 991.3 MB in the end (delta: -10.6 MB). Peak memory consumption was 4.2 GB. Max. memory is 11.5 GB. * Witness Printer took 132.55 ms. Allocated memory is still 5.0 GB. Free memory was 991.3 MB in the beginning and 909.9 MB in the end (delta: 81.4 MB). Peak memory consumption was 81.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 100]: 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: 880]: Loop Invariant Derived loop invariant: ((((((((((((((((((((a12 <= 73282 && 0 < a12 + 43) && ((((!(a21 == 0) && a15 == 8) && a24 == 1) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24)))) && a21 <= 9) && a21 == 8) || (((!(a15 == 6) && a12 + 49 <= 0) && a15 <= 7) && a21 <= 6)) || !(7 == \old(a21))) || (a15 <= 7 && (((!(a15 == 9) && 1 == a24) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24)))) && a21 <= 9) && !(6 == a21))) || (((((!(a21 == 0) && a15 == 8) && a24 == 1) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24)))) && a12 <= 11) && 0 < a12 + 43)) || ((a12 <= 76 && (((!(a21 == 0) && a15 == 8) && a24 == 1) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24)))) && a21 <= 9) && 0 < a12 + 43)) || ((1 == a24 && !(a15 == 6)) && 10 == a21)) || (((6 == a15 && (!(a15 == 9) && 1 == a24) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24)))) && 80 < a12) && a21 <= 6)) || ((((a21 <= 9 && 1 == a24 && !(a15 == 6)) && !(6 == a21)) && !(a15 == 8)) && 0 < a12 + 43)) || !(1 == \old(a24))) || (((a12 <= 11 && a24 == \old(a24)) && 10 == a21) && 0 < a12 + 43)) || !(8 == \old(a15))) || (7 == a15 && 1 == a24 && a21 <= 6)) || (((a12 + 49 == 0 && 8 == a15) && a24 == 1) && a21 == 7)) || ((((!(a21 == 0) && a15 == 8) && a24 == 1) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24)))) && a21 <= 6)) || !(0 == \old(a12) + 49)) || ((((7 <= a15 && a21 <= 6) && 1 == a24 && !(a15 == 6)) && !(a15 == 8)) && 0 < a12 + 43)) || (6 == a15 && (a12 <= 76 && (!(a15 == 9) && 1 == a24) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24)))) && a21 <= 6)) || (((a21 == 8 && 1 == a24 && !(a15 == 6)) && a12 + 526767 <= 0) && !(a15 == 8))) || ((6 == a21 && 1 == a24) && 5 == a15) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 254 locations, 1 error locations. SAFE Result, 197.8s OverallTime, 21 OverallIterations, 16 TraceHistogramMax, 67.6s AutomataDifference, 0.0s DeadEndRemovalTime, 20.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2519 SDtfs, 57501 SDslu, 5143 SDs, 0 SdLazy, 62807 SolverSat, 8156 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 45.0s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 32710 GetRequests, 31976 SyntacticMatches, 31 SemanticMatches, 703 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 11570 ImplicationChecksByTransitivity, 18.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16861occurred in iteration=18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 64.9s AbstIntTime, 18 AbstIntIterations, 2 AbstIntStrong, 0.9971609047182339 AbsIntWeakeningRatio, 0.10211267605633803 AbsIntAvgWeakeningVarsNumRemoved, 15.725352112676056 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.7s AutomataMinimizationTime, 21 MinimizatonAttempts, 9364 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 849 PreInvPairs, 1113 NumberOfFragments, 1509 HoareAnnotationTreeSize, 849 FomulaSimplifications, 37642185 FormulaSimplificationTreeSizeReduction, 5.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 11627629 FormulaSimplificationTreeSizeReductionInter, 14.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 25.8s InterpolantComputationTime, 32017 NumberOfCodeBlocks, 32017 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 47552 ConstructedInterpolants, 12 QuantifiedInterpolants, 159395609 SizeOfPredicates, 37 NumberOfNonLiveVariables, 22011 ConjunctsInSsa, 133 ConjunctsInUnsatCore, 53 InterpolantComputations, 8 PerfectInterpolantSequences, 158221/168347 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...