./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem14_label50_true-unreach-call_false-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_47d3d078-43f3-483f-bcf3-f9767f042dce/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_47d3d078-43f3-483f-bcf3-f9767f042dce/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_47d3d078-43f3-483f-bcf3-f9767f042dce/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_47d3d078-43f3-483f-bcf3-f9767f042dce/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem14_label50_true-unreach-call_false-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_47d3d078-43f3-483f-bcf3-f9767f042dce/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_47d3d078-43f3-483f-bcf3-f9767f042dce/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 84719fa7c370f946c431f46475b54ba30487ebc7 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 10:34:49,617 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 10:34:49,618 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 10:34:49,626 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 10:34:49,627 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 10:34:49,627 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 10:34:49,628 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 10:34:49,629 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 10:34:49,630 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 10:34:49,631 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 10:34:49,631 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 10:34:49,631 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 10:34:49,632 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 10:34:49,633 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 10:34:49,633 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 10:34:49,634 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 10:34:49,634 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 10:34:49,635 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 10:34:49,637 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 10:34:49,638 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 10:34:49,638 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 10:34:49,639 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 10:34:49,640 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 10:34:49,641 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 10:34:49,641 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 10:34:49,641 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 10:34:49,642 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 10:34:49,643 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 10:34:49,643 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 10:34:49,644 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 10:34:49,644 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 10:34:49,644 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 10:34:49,644 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 10:34:49,645 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 10:34:49,645 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 10:34:49,646 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 10:34:49,646 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_47d3d078-43f3-483f-bcf3-f9767f042dce/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 10:34:49,655 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 10:34:49,656 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 10:34:49,656 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 10:34:49,656 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 10:34:49,656 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 10:34:49,657 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 10:34:49,657 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 10:34:49,657 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 10:34:49,657 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 10:34:49,657 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 10:34:49,657 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 10:34:49,657 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 10:34:49,658 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 10:34:49,658 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 10:34:49,658 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 10:34:49,658 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 10:34:49,658 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 10:34:49,659 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 10:34:49,659 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 10:34:49,659 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 10:34:49,659 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 10:34:49,659 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 10:34:49,659 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 10:34:49,659 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 10:34:49,660 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 10:34:49,660 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 10:34:49,660 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 10:34:49,660 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 10:34:49,660 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 10:34:49,660 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 10:34:49,661 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 10:34:49,661 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 10:34:49,661 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 10:34:49,661 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 10:34:49,661 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 10:34:49,661 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 10:34:49,661 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 10:34:49,661 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_47d3d078-43f3-483f-bcf3-f9767f042dce/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 -> 84719fa7c370f946c431f46475b54ba30487ebc7 [2018-11-18 10:34:49,684 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 10:34:49,693 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 10:34:49,696 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 10:34:49,697 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 10:34:49,697 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 10:34:49,698 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_47d3d078-43f3-483f-bcf3-f9767f042dce/bin-2019/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem14_label50_true-unreach-call_false-termination.c [2018-11-18 10:34:49,742 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_47d3d078-43f3-483f-bcf3-f9767f042dce/bin-2019/utaipan/data/46e45f794/14f6bd31a38a4e63801b7c8748080387/FLAGd5832c7f1 [2018-11-18 10:34:50,129 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 10:34:50,130 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_47d3d078-43f3-483f-bcf3-f9767f042dce/sv-benchmarks/c/eca-rers2012/Problem14_label50_true-unreach-call_false-termination.c [2018-11-18 10:34:50,141 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_47d3d078-43f3-483f-bcf3-f9767f042dce/bin-2019/utaipan/data/46e45f794/14f6bd31a38a4e63801b7c8748080387/FLAGd5832c7f1 [2018-11-18 10:34:50,499 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_47d3d078-43f3-483f-bcf3-f9767f042dce/bin-2019/utaipan/data/46e45f794/14f6bd31a38a4e63801b7c8748080387 [2018-11-18 10:34:50,501 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 10:34:50,502 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 10:34:50,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 10:34:50,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 10:34:50,505 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 10:34:50,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:34:50" (1/1) ... [2018-11-18 10:34:50,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18821e74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:34:50, skipping insertion in model container [2018-11-18 10:34:50,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:34:50" (1/1) ... [2018-11-18 10:34:50,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 10:34:50,553 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 10:34:50,819 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:34:50,822 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 10:34:50,911 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:34:50,923 INFO L195 MainTranslator]: Completed translation [2018-11-18 10:34:50,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:34:50 WrapperNode [2018-11-18 10:34:50,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 10:34:50,924 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 10:34:50,924 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 10:34:50,924 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 10:34:50,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:34:50" (1/1) ... [2018-11-18 10:34:50,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:34:50" (1/1) ... [2018-11-18 10:34:51,005 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 10:34:51,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 10:34:51,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 10:34:51,005 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 10:34:51,013 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:34:50" (1/1) ... [2018-11-18 10:34:51,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:34:50" (1/1) ... [2018-11-18 10:34:51,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:34:50" (1/1) ... [2018-11-18 10:34:51,016 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:34:50" (1/1) ... [2018-11-18 10:34:51,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:34:50" (1/1) ... [2018-11-18 10:34:51,047 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:34:50" (1/1) ... [2018-11-18 10:34:51,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:34:50" (1/1) ... [2018-11-18 10:34:51,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 10:34:51,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 10:34:51,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 10:34:51,059 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 10:34:51,059 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:34:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47d3d078-43f3-483f-bcf3-f9767f042dce/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 [2018-11-18 10:34:51,097 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-18 10:34:51,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 10:34:51,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 10:34:51,097 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-18 10:34:51,098 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-18 10:34:51,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 10:34:51,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 10:34:51,098 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 10:34:51,098 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 10:34:51,978 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 10:34:51,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:34:51 BoogieIcfgContainer [2018-11-18 10:34:51,979 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 10:34:51,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 10:34:51,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 10:34:51,981 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 10:34:51,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:34:50" (1/3) ... [2018-11-18 10:34:51,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c449eb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:34:51, skipping insertion in model container [2018-11-18 10:34:51,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:34:50" (2/3) ... [2018-11-18 10:34:51,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c449eb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:34:51, skipping insertion in model container [2018-11-18 10:34:51,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:34:51" (3/3) ... [2018-11-18 10:34:51,983 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label50_true-unreach-call_false-termination.c [2018-11-18 10:34:51,989 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 10:34:51,994 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 10:34:52,002 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 10:34:52,024 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 10:34:52,025 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 10:34:52,025 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 10:34:52,025 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 10:34:52,025 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 10:34:52,025 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 10:34:52,025 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 10:34:52,025 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 10:34:52,042 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-18 10:34:52,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-18 10:34:52,047 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:34:52,047 INFO L375 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, 1, 1, 1, 1, 1, 1] [2018-11-18 10:34:52,049 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:34:52,052 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:34:52,053 INFO L82 PathProgramCache]: Analyzing trace with hash -50157732, now seen corresponding path program 1 times [2018-11-18 10:34:52,054 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 10:34:52,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:34:52,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:34:52,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:34:52,084 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 10:34:52,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:34:52,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:34:52,265 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:34:52,266 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 10:34:52,266 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 10:34:52,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 10:34:52,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 10:34:52,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 10:34:52,279 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-11-18 10:34:53,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:34:53,021 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-11-18 10:34:53,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 10:34:53,022 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2018-11-18 10:34:53,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:34:53,033 INFO L225 Difference]: With dead ends: 691 [2018-11-18 10:34:53,033 INFO L226 Difference]: Without dead ends: 434 [2018-11-18 10:34:53,038 INFO L604 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 [2018-11-18 10:34:53,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-11-18 10:34:53,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-11-18 10:34:53,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-11-18 10:34:53,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-11-18 10:34:53,085 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 44 [2018-11-18 10:34:53,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:34:53,085 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-11-18 10:34:53,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 10:34:53,086 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-11-18 10:34:53,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-11-18 10:34:53,090 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:34:53,090 INFO L375 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, 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] [2018-11-18 10:34:53,091 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:34:53,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:34:53,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1724157031, now seen corresponding path program 1 times [2018-11-18 10:34:53,091 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 10:34:53,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:34:53,092 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:34:53,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:34:53,093 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 10:34:53,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:34:53,250 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:34:53,250 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:34:53,251 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-18 10:34:53,251 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 10:34:53,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 10:34:53,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 10:34:53,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-18 10:34:53,253 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-11-18 10:34:53,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:34:53,903 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-11-18 10:34:53,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 10:34:53,903 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-11-18 10:34:53,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:34:53,907 INFO L225 Difference]: With dead ends: 1062 [2018-11-18 10:34:53,907 INFO L226 Difference]: Without dead ends: 634 [2018-11-18 10:34:53,908 INFO L604 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 [2018-11-18 10:34:53,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-11-18 10:34:53,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-11-18 10:34:53,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-11-18 10:34:53,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-11-18 10:34:53,928 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 131 [2018-11-18 10:34:53,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:34:53,929 INFO L480 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-11-18 10:34:53,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 10:34:53,929 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-11-18 10:34:53,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-11-18 10:34:53,931 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:34:53,931 INFO L375 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, 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] [2018-11-18 10:34:53,931 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:34:53,932 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:34:53,932 INFO L82 PathProgramCache]: Analyzing trace with hash 415093804, now seen corresponding path program 1 times [2018-11-18 10:34:53,932 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 10:34:53,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:34:53,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:34:53,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:34:53,934 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 10:34:53,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:34:54,005 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:34:54,005 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:34:54,006 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 10:34:54,006 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 10:34:54,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 10:34:54,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 10:34:54,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 10:34:54,007 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 4 states. [2018-11-18 10:34:54,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:34:54,992 INFO L93 Difference]: Finished difference Result 2352 states and 4010 transitions. [2018-11-18 10:34:54,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 10:34:54,993 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2018-11-18 10:34:54,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:34:55,001 INFO L225 Difference]: With dead ends: 2352 [2018-11-18 10:34:55,001 INFO L226 Difference]: Without dead ends: 1733 [2018-11-18 10:34:55,006 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 10:34:55,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1733 states. [2018-11-18 10:34:55,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1733 to 1733. [2018-11-18 10:34:55,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1733 states. [2018-11-18 10:34:55,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2668 transitions. [2018-11-18 10:34:55,047 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2668 transitions. Word has length 140 [2018-11-18 10:34:55,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:34:55,047 INFO L480 AbstractCegarLoop]: Abstraction has 1733 states and 2668 transitions. [2018-11-18 10:34:55,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 10:34:55,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2668 transitions. [2018-11-18 10:34:55,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-11-18 10:34:55,055 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:34:55,055 INFO L375 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, 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, 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] [2018-11-18 10:34:55,055 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:34:55,055 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:34:55,055 INFO L82 PathProgramCache]: Analyzing trace with hash -872463117, now seen corresponding path program 1 times [2018-11-18 10:34:55,055 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 10:34:55,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:34:55,056 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:34:55,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:34:55,056 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 10:34:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:34:55,689 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 147 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:34:55,689 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:34:55,689 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 10:34:55,690 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 278 with the following transitions: [2018-11-18 10:34:55,691 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], [217], [225], [233], [241], [249], [253], [255], [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], [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], [655], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [694], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-18 10:34:55,720 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 10:34:55,721 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 10:34:58,366 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-18 10:34:58,367 INFO L272 AbstractInterpreter]: Visited 125 different actions 125 times. Never merged. Never widened. Performed 1139 root evaluator evaluations with a maximum evaluation depth of 22. Performed 1139 inverse root evaluator evaluations with a maximum inverse evaluation depth of 22. Never found a fixpoint. Largest state had 24 variables. [2018-11-18 10:34:58,381 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:34:58,381 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-18 10:35:00,115 INFO L227 lantSequenceWeakener]: Weakened 268 states. On average, predicates are now at 77.74% of their original sizes. [2018-11-18 10:35:00,115 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-18 10:35:00,150 INFO L415 sIntCurrentIteration]: We unified 276 AI predicates to 276 [2018-11-18 10:35:00,151 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-18 10:35:00,151 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 10:35:00,152 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2018-11-18 10:35:00,152 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 10:35:00,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 10:35:00,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 10:35:00,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-18 10:35:00,153 INFO L87 Difference]: Start difference. First operand 1733 states and 2668 transitions. Second operand 6 states. [2018-11-18 10:35:07,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:35:07,766 INFO L93 Difference]: Finished difference Result 3645 states and 5630 transitions. [2018-11-18 10:35:07,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 10:35:07,766 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 277 [2018-11-18 10:35:07,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:35:07,775 INFO L225 Difference]: With dead ends: 3645 [2018-11-18 10:35:07,775 INFO L226 Difference]: Without dead ends: 1918 [2018-11-18 10:35:07,780 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 277 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-18 10:35:07,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1918 states. [2018-11-18 10:35:07,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 1916. [2018-11-18 10:35:07,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1916 states. [2018-11-18 10:35:07,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2859 transitions. [2018-11-18 10:35:07,823 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2859 transitions. Word has length 277 [2018-11-18 10:35:07,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:35:07,824 INFO L480 AbstractCegarLoop]: Abstraction has 1916 states and 2859 transitions. [2018-11-18 10:35:07,824 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 10:35:07,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2859 transitions. [2018-11-18 10:35:07,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-11-18 10:35:07,833 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:35:07,834 INFO L375 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, 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, 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] [2018-11-18 10:35:07,834 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:35:07,834 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:35:07,834 INFO L82 PathProgramCache]: Analyzing trace with hash 594401252, now seen corresponding path program 1 times [2018-11-18 10:35:07,834 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 10:35:07,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:35:07,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:35:07,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:35:07,835 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 10:35:07,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:35:08,357 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 199 proven. 190 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-18 10:35:08,357 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:35:08,357 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 10:35:08,357 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 363 with the following transitions: [2018-11-18 10:35:08,358 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], [217], [225], [233], [241], [249], [253], [255], [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], [551], [554], [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], [655], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [694], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-18 10:35:08,361 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 10:35:08,361 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 10:35:11,646 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-18 10:35:11,646 INFO L272 AbstractInterpreter]: Visited 129 different actions 251 times. Merged at 4 different actions 4 times. Never widened. Performed 2357 root evaluator evaluations with a maximum evaluation depth of 22. Performed 2357 inverse root evaluator evaluations with a maximum inverse evaluation depth of 22. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-18 10:35:11,648 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:35:11,648 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-18 10:35:13,264 INFO L227 lantSequenceWeakener]: Weakened 359 states. On average, predicates are now at 77.7% of their original sizes. [2018-11-18 10:35:13,264 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-18 10:35:13,342 INFO L415 sIntCurrentIteration]: We unified 361 AI predicates to 361 [2018-11-18 10:35:13,342 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-18 10:35:13,342 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 10:35:13,342 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 20 [2018-11-18 10:35:13,342 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 10:35:13,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 10:35:13,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 10:35:13,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-18 10:35:13,343 INFO L87 Difference]: Start difference. First operand 1916 states and 2859 transitions. Second operand 10 states. [2018-11-18 10:35:52,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:35:52,137 INFO L93 Difference]: Finished difference Result 4389 states and 6507 transitions. [2018-11-18 10:35:52,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-18 10:35:52,137 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 362 [2018-11-18 10:35:52,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:35:52,146 INFO L225 Difference]: With dead ends: 4389 [2018-11-18 10:35:52,146 INFO L226 Difference]: Without dead ends: 2292 [2018-11-18 10:35:52,153 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 370 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-11-18 10:35:52,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2292 states. [2018-11-18 10:35:52,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2292 to 2290. [2018-11-18 10:35:52,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2290 states. [2018-11-18 10:35:52,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2290 states to 2290 states and 3256 transitions. [2018-11-18 10:35:52,205 INFO L78 Accepts]: Start accepts. Automaton has 2290 states and 3256 transitions. Word has length 362 [2018-11-18 10:35:52,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:35:52,205 INFO L480 AbstractCegarLoop]: Abstraction has 2290 states and 3256 transitions. [2018-11-18 10:35:52,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 10:35:52,205 INFO L276 IsEmpty]: Start isEmpty. Operand 2290 states and 3256 transitions. [2018-11-18 10:35:52,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2018-11-18 10:35:52,217 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:35:52,218 INFO L375 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, 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, 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] [2018-11-18 10:35:52,218 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:35:52,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:35:52,219 INFO L82 PathProgramCache]: Analyzing trace with hash 363296860, now seen corresponding path program 1 times [2018-11-18 10:35:52,219 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 10:35:52,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:35:52,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:35:52,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:35:52,220 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 10:35:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:35:52,715 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 346 proven. 250 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-18 10:35:52,715 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:35:52,715 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 10:35:52,715 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 463 with the following transitions: [2018-11-18 10:35:52,716 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], [217], [225], [233], [241], [249], [253], [255], [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], [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], [655], [658], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [694], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-18 10:35:52,718 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 10:35:52,718 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 10:35:55,539 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-18 10:35:55,540 INFO L272 AbstractInterpreter]: Visited 130 different actions 254 times. Merged at 5 different actions 5 times. Never widened. Performed 2349 root evaluator evaluations with a maximum evaluation depth of 22. Performed 2349 inverse root evaluator evaluations with a maximum inverse evaluation depth of 22. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-18 10:35:55,545 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:35:55,545 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-18 10:35:57,194 INFO L227 lantSequenceWeakener]: Weakened 459 states. On average, predicates are now at 77.64% of their original sizes. [2018-11-18 10:35:57,194 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-18 10:35:57,231 INFO L415 sIntCurrentIteration]: We unified 461 AI predicates to 461 [2018-11-18 10:35:57,231 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-18 10:35:57,231 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 10:35:57,231 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2018-11-18 10:35:57,231 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 10:35:57,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 10:35:57,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 10:35:57,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-18 10:35:57,232 INFO L87 Difference]: Start difference. First operand 2290 states and 3256 transitions. Second operand 10 states. [2018-11-18 10:36:16,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:36:16,429 INFO L93 Difference]: Finished difference Result 4205 states and 6126 transitions. [2018-11-18 10:36:16,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 10:36:16,429 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 462 [2018-11-18 10:36:16,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:36:16,436 INFO L225 Difference]: With dead ends: 4205 [2018-11-18 10:36:16,436 INFO L226 Difference]: Without dead ends: 2104 [2018-11-18 10:36:16,442 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 469 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2018-11-18 10:36:16,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2104 states. [2018-11-18 10:36:16,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2104 to 2101. [2018-11-18 10:36:16,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2101 states. [2018-11-18 10:36:16,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2101 states to 2101 states and 3039 transitions. [2018-11-18 10:36:16,482 INFO L78 Accepts]: Start accepts. Automaton has 2101 states and 3039 transitions. Word has length 462 [2018-11-18 10:36:16,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:36:16,482 INFO L480 AbstractCegarLoop]: Abstraction has 2101 states and 3039 transitions. [2018-11-18 10:36:16,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 10:36:16,482 INFO L276 IsEmpty]: Start isEmpty. Operand 2101 states and 3039 transitions. [2018-11-18 10:36:16,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2018-11-18 10:36:16,495 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:36:16,495 INFO L375 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:36:16,496 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:36:16,496 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:36:16,496 INFO L82 PathProgramCache]: Analyzing trace with hash -734705564, now seen corresponding path program 1 times [2018-11-18 10:36:16,496 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 10:36:16,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:36:16,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:36:16,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:36:16,497 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 10:36:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:36:16,872 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 380 proven. 112 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-11-18 10:36:16,872 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:36:16,872 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 10:36:16,872 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 499 with the following transitions: [2018-11-18 10:36:16,873 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], [217], [225], [233], [241], [249], [253], [255], [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], [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], [666], [667], [671], [675], [679], [683], [687], [691], [694], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-18 10:36:16,876 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 10:36:16,876 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 10:36:23,452 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-18 10:36:23,452 INFO L272 AbstractInterpreter]: Visited 130 different actions 383 times. Merged at 7 different actions 15 times. Never widened. Performed 3696 root evaluator evaluations with a maximum evaluation depth of 22. Performed 3696 inverse root evaluator evaluations with a maximum inverse evaluation depth of 22. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-18 10:36:23,453 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:36:23,453 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-18 10:36:24,402 INFO L227 lantSequenceWeakener]: Weakened 495 states. On average, predicates are now at 80.23% of their original sizes. [2018-11-18 10:36:24,402 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-18 10:36:24,438 INFO L415 sIntCurrentIteration]: We unified 497 AI predicates to 497 [2018-11-18 10:36:24,438 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-18 10:36:24,438 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 10:36:24,439 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2018-11-18 10:36:24,439 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 10:36:24,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 10:36:24,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 10:36:24,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-18 10:36:24,439 INFO L87 Difference]: Start difference. First operand 2101 states and 3039 transitions. Second operand 9 states. [2018-11-18 10:36:36,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:36:36,825 INFO L93 Difference]: Finished difference Result 4547 states and 6798 transitions. [2018-11-18 10:36:36,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-18 10:36:36,825 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 498 [2018-11-18 10:36:36,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:36:36,832 INFO L225 Difference]: With dead ends: 4547 [2018-11-18 10:36:36,832 INFO L226 Difference]: Without dead ends: 2820 [2018-11-18 10:36:36,838 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 504 GetRequests, 490 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-11-18 10:36:36,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2820 states. [2018-11-18 10:36:36,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2820 to 2801. [2018-11-18 10:36:36,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2801 states. [2018-11-18 10:36:36,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2801 states to 2801 states and 3937 transitions. [2018-11-18 10:36:36,889 INFO L78 Accepts]: Start accepts. Automaton has 2801 states and 3937 transitions. Word has length 498 [2018-11-18 10:36:36,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:36:36,889 INFO L480 AbstractCegarLoop]: Abstraction has 2801 states and 3937 transitions. [2018-11-18 10:36:36,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 10:36:36,889 INFO L276 IsEmpty]: Start isEmpty. Operand 2801 states and 3937 transitions. [2018-11-18 10:36:36,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2018-11-18 10:36:36,899 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:36:36,899 INFO L375 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, 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, 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, 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] [2018-11-18 10:36:36,899 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:36:36,899 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:36:36,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1899529555, now seen corresponding path program 1 times [2018-11-18 10:36:36,900 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 10:36:36,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:36:36,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:36:36,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:36:36,901 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 10:36:36,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:36:37,660 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 382 proven. 329 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-18 10:36:37,660 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:36:37,660 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 10:36:37,660 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 566 with the following transitions: [2018-11-18 10:36:37,661 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], [217], [225], [233], [241], [249], [253], [255], [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], [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], [694], [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], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-18 10:36:37,664 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 10:36:37,664 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 10:36:41,770 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 10:36:41,770 INFO L272 AbstractInterpreter]: Visited 191 different actions 762 times. Merged at 9 different actions 34 times. Widened at 1 different actions 1 times. Performed 8307 root evaluator evaluations with a maximum evaluation depth of 21. Performed 8307 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 7 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-18 10:36:41,776 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:36:41,777 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 10:36:41,777 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:36:41,778 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47d3d078-43f3-483f-bcf3-f9767f042dce/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 [2018-11-18 10:36:41,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:36:41,785 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 10:36:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:36:41,895 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:36:42,242 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 673 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-11-18 10:36:42,242 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 10:36:42,585 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 380 proven. 119 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-11-18 10:36:42,601 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 10:36:42,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 20 [2018-11-18 10:36:42,601 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 10:36:42,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-18 10:36:42,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-18 10:36:42,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2018-11-18 10:36:42,603 INFO L87 Difference]: Start difference. First operand 2801 states and 3937 transitions. Second operand 17 states. [2018-11-18 10:36:47,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:36:47,796 INFO L93 Difference]: Finished difference Result 6532 states and 9673 transitions. [2018-11-18 10:36:47,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-11-18 10:36:47,796 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 565 [2018-11-18 10:36:47,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:36:47,808 INFO L225 Difference]: With dead ends: 6532 [2018-11-18 10:36:47,808 INFO L226 Difference]: Without dead ends: 4105 [2018-11-18 10:36:47,820 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1228 GetRequests, 1163 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1203 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=916, Invalid=3506, Unknown=0, NotChecked=0, Total=4422 [2018-11-18 10:36:47,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4105 states. [2018-11-18 10:36:47,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4105 to 3984. [2018-11-18 10:36:47,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3984 states. [2018-11-18 10:36:47,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3984 states to 3984 states and 5122 transitions. [2018-11-18 10:36:47,892 INFO L78 Accepts]: Start accepts. Automaton has 3984 states and 5122 transitions. Word has length 565 [2018-11-18 10:36:47,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:36:47,892 INFO L480 AbstractCegarLoop]: Abstraction has 3984 states and 5122 transitions. [2018-11-18 10:36:47,892 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-18 10:36:47,892 INFO L276 IsEmpty]: Start isEmpty. Operand 3984 states and 5122 transitions. [2018-11-18 10:36:47,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2018-11-18 10:36:47,902 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:36:47,902 INFO L375 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, 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, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:36:47,902 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:36:47,902 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:36:47,902 INFO L82 PathProgramCache]: Analyzing trace with hash 757395771, now seen corresponding path program 1 times [2018-11-18 10:36:47,903 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 10:36:47,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:36:47,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:36:47,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:36:47,903 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 10:36:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:36:48,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 504 proven. 458 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-11-18 10:36:48,583 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:36:48,583 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 10:36:48,583 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 572 with the following transitions: [2018-11-18 10:36:48,583 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], [217], [225], [233], [241], [249], [253], [255], [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], [506], [507], [511], [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], [666], [667], [671], [675], [679], [683], [687], [691], [694], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-18 10:36:48,584 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 10:36:48,585 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 10:36:55,921 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 10:36:55,921 INFO L272 AbstractInterpreter]: Visited 132 different actions 519 times. Merged at 9 different actions 27 times. Never widened. Performed 5158 root evaluator evaluations with a maximum evaluation depth of 22. Performed 5158 inverse root evaluator evaluations with a maximum inverse evaluation depth of 22. Found 8 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-18 10:36:55,922 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:36:55,923 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 10:36:55,923 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:36:55,923 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47d3d078-43f3-483f-bcf3-f9767f042dce/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 [2018-11-18 10:36:55,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:36:55,928 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 10:36:55,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:36:55,997 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:36:56,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 852 proven. 2 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2018-11-18 10:36:56,276 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 10:36:56,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 498 proven. 112 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2018-11-18 10:36:56,623 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 10:36:56,623 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2018-11-18 10:36:56,623 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 10:36:56,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-18 10:36:56,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-18 10:36:56,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-11-18 10:36:56,624 INFO L87 Difference]: Start difference. First operand 3984 states and 5122 transitions. Second operand 17 states. [2018-11-18 10:36:59,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:36:59,507 INFO L93 Difference]: Finished difference Result 9018 states and 12137 transitions. [2018-11-18 10:36:59,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-18 10:36:59,508 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 571 [2018-11-18 10:36:59,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:36:59,516 INFO L225 Difference]: With dead ends: 9018 [2018-11-18 10:36:59,516 INFO L226 Difference]: Without dead ends: 4293 [2018-11-18 10:36:59,528 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1200 GetRequests, 1153 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=521, Invalid=1735, Unknown=0, NotChecked=0, Total=2256 [2018-11-18 10:36:59,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4293 states. [2018-11-18 10:36:59,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4293 to 4166. [2018-11-18 10:36:59,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4166 states. [2018-11-18 10:36:59,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4166 states to 4166 states and 4753 transitions. [2018-11-18 10:36:59,571 INFO L78 Accepts]: Start accepts. Automaton has 4166 states and 4753 transitions. Word has length 571 [2018-11-18 10:36:59,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:36:59,571 INFO L480 AbstractCegarLoop]: Abstraction has 4166 states and 4753 transitions. [2018-11-18 10:36:59,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-18 10:36:59,571 INFO L276 IsEmpty]: Start isEmpty. Operand 4166 states and 4753 transitions. [2018-11-18 10:36:59,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 677 [2018-11-18 10:36:59,576 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:36:59,576 INFO L375 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:36:59,576 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:36:59,576 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:36:59,577 INFO L82 PathProgramCache]: Analyzing trace with hash -37091984, now seen corresponding path program 2 times [2018-11-18 10:36:59,577 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 10:36:59,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:36:59,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:36:59,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:36:59,578 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 10:36:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:36:59,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 536 proven. 119 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2018-11-18 10:36:59,881 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:36:59,881 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 10:36:59,881 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 10:36:59,881 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 10:36:59,881 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:36:59,881 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47d3d078-43f3-483f-bcf3-f9767f042dce/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 [2018-11-18 10:36:59,887 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 10:36:59,887 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-18 10:36:59,946 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-18 10:36:59,946 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 10:36:59,952 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:37:00,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 644 proven. 2 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2018-11-18 10:37:00,090 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 10:37:00,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 644 proven. 2 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2018-11-18 10:37:00,482 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 10:37:00,483 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-18 10:37:00,483 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 10:37:00,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 10:37:00,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 10:37:00,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-11-18 10:37:00,483 INFO L87 Difference]: Start difference. First operand 4166 states and 4753 transitions. Second operand 9 states. [2018-11-18 10:37:03,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:37:03,268 INFO L93 Difference]: Finished difference Result 15224 states and 20396 transitions. [2018-11-18 10:37:03,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-11-18 10:37:03,269 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 676 [2018-11-18 10:37:03,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:37:03,312 INFO L225 Difference]: With dead ends: 15224 [2018-11-18 10:37:03,312 INFO L226 Difference]: Without dead ends: 11432 [2018-11-18 10:37:03,334 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1420 GetRequests, 1377 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=367, Invalid=1613, Unknown=0, NotChecked=0, Total=1980 [2018-11-18 10:37:03,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11432 states. [2018-11-18 10:37:03,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11432 to 10584. [2018-11-18 10:37:03,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10584 states. [2018-11-18 10:37:03,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10584 states to 10584 states and 12154 transitions. [2018-11-18 10:37:03,539 INFO L78 Accepts]: Start accepts. Automaton has 10584 states and 12154 transitions. Word has length 676 [2018-11-18 10:37:03,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:37:03,540 INFO L480 AbstractCegarLoop]: Abstraction has 10584 states and 12154 transitions. [2018-11-18 10:37:03,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 10:37:03,540 INFO L276 IsEmpty]: Start isEmpty. Operand 10584 states and 12154 transitions. [2018-11-18 10:37:03,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 764 [2018-11-18 10:37:03,556 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:37:03,557 INFO L375 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, 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, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:37:03,557 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:37:03,557 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:37:03,557 INFO L82 PathProgramCache]: Analyzing trace with hash -722585145, now seen corresponding path program 1 times [2018-11-18 10:37:03,557 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 10:37:03,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:37:03,558 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 10:37:03,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:37:03,558 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 10:37:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:37:04,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1751 backedges. 595 proven. 196 refuted. 0 times theorem prover too weak. 960 trivial. 0 not checked. [2018-11-18 10:37:04,016 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:37:04,016 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 10:37:04,017 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 764 with the following transitions: [2018-11-18 10:37:04,017 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], [217], [225], [233], [241], [249], [253], [255], [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], [534], [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], [694], [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], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-18 10:37:04,019 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 10:37:04,019 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 10:37:08,120 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 10:37:08,120 INFO L272 AbstractInterpreter]: Visited 193 different actions 774 times. Merged at 11 different actions 38 times. Widened at 1 different actions 1 times. Performed 8479 root evaluator evaluations with a maximum evaluation depth of 21. Performed 8479 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 10 fixpoints after 5 different actions. Largest state had 24 variables. [2018-11-18 10:37:08,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:37:08,124 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 10:37:08,124 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:37:08,125 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47d3d078-43f3-483f-bcf3-f9767f042dce/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 [2018-11-18 10:37:08,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:37:08,131 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 10:37:08,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:37:08,214 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:37:08,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1751 backedges. 1268 proven. 2 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2018-11-18 10:37:08,394 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 10:37:08,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1751 backedges. 595 proven. 196 refuted. 0 times theorem prover too weak. 960 trivial. 0 not checked. [2018-11-18 10:37:08,702 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 10:37:08,703 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-11-18 10:37:08,703 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 10:37:08,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 10:37:08,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 10:37:08,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-18 10:37:08,704 INFO L87 Difference]: Start difference. First operand 10584 states and 12154 transitions. Second operand 7 states. [2018-11-18 10:37:10,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:37:10,009 INFO L93 Difference]: Finished difference Result 25942 states and 34221 transitions. [2018-11-18 10:37:10,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 10:37:10,010 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 763 [2018-11-18 10:37:10,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:37:10,065 INFO L225 Difference]: With dead ends: 25942 [2018-11-18 10:37:10,065 INFO L226 Difference]: Without dead ends: 15732 [2018-11-18 10:37:10,103 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1541 GetRequests, 1528 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-11-18 10:37:10,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15732 states. [2018-11-18 10:37:10,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15732 to 14894. [2018-11-18 10:37:10,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14894 states. [2018-11-18 10:37:10,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14894 states to 14894 states and 17322 transitions. [2018-11-18 10:37:10,312 INFO L78 Accepts]: Start accepts. Automaton has 14894 states and 17322 transitions. Word has length 763 [2018-11-18 10:37:10,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:37:10,313 INFO L480 AbstractCegarLoop]: Abstraction has 14894 states and 17322 transitions. [2018-11-18 10:37:10,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 10:37:10,313 INFO L276 IsEmpty]: Start isEmpty. Operand 14894 states and 17322 transitions. [2018-11-18 10:37:10,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 809 [2018-11-18 10:37:10,324 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:37:10,325 INFO L375 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, 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, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:37:10,325 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:37:10,325 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:37:10,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1205896632, now seen corresponding path program 1 times [2018-11-18 10:37:10,325 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 10:37:10,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:37:10,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:37:10,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:37:10,326 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 10:37:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:37:11,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1798 backedges. 594 proven. 829 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2018-11-18 10:37:11,370 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:37:11,370 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 10:37:11,371 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 809 with the following transitions: [2018-11-18 10:37:11,371 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], [217], [225], [233], [241], [249], [253], [255], [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], [534], [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], [694], [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], [866], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-18 10:37:11,372 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 10:37:11,372 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 10:37:15,507 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 10:37:15,507 INFO L272 AbstractInterpreter]: Visited 193 different actions 780 times. Merged at 11 different actions 44 times. Widened at 1 different actions 2 times. Performed 8509 root evaluator evaluations with a maximum evaluation depth of 21. Performed 8509 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 10 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-18 10:37:15,512 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:37:15,512 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 10:37:15,513 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:37:15,513 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47d3d078-43f3-483f-bcf3-f9767f042dce/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 [2018-11-18 10:37:15,519 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:37:15,519 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 10:37:15,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:37:15,611 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:37:15,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1798 backedges. 1315 proven. 2 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2018-11-18 10:37:15,971 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 10:37:16,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1798 backedges. 640 proven. 196 refuted. 0 times theorem prover too weak. 962 trivial. 0 not checked. [2018-11-18 10:37:16,425 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 10:37:16,426 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 19 [2018-11-18 10:37:16,426 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 10:37:16,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-18 10:37:16,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-18 10:37:16,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2018-11-18 10:37:16,427 INFO L87 Difference]: Start difference. First operand 14894 states and 17322 transitions. Second operand 17 states. [2018-11-18 10:37:19,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:37:19,667 INFO L93 Difference]: Finished difference Result 34112 states and 41463 transitions. [2018-11-18 10:37:19,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-11-18 10:37:19,667 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 808 [2018-11-18 10:37:19,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:37:19,723 INFO L225 Difference]: With dead ends: 34112 [2018-11-18 10:37:19,724 INFO L226 Difference]: Without dead ends: 19592 [2018-11-18 10:37:19,776 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1688 GetRequests, 1638 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 636 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=583, Invalid=2069, Unknown=0, NotChecked=0, Total=2652 [2018-11-18 10:37:19,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19592 states. [2018-11-18 10:37:19,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19592 to 19329. [2018-11-18 10:37:19,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19329 states. [2018-11-18 10:37:20,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19329 states to 19329 states and 22674 transitions. [2018-11-18 10:37:20,027 INFO L78 Accepts]: Start accepts. Automaton has 19329 states and 22674 transitions. Word has length 808 [2018-11-18 10:37:20,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:37:20,027 INFO L480 AbstractCegarLoop]: Abstraction has 19329 states and 22674 transitions. [2018-11-18 10:37:20,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-18 10:37:20,028 INFO L276 IsEmpty]: Start isEmpty. Operand 19329 states and 22674 transitions. [2018-11-18 10:37:20,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 924 [2018-11-18 10:37:20,043 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:37:20,043 INFO L375 BasicCegarLoop]: trace histogram [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, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:37:20,043 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:37:20,043 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:37:20,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1070301673, now seen corresponding path program 1 times [2018-11-18 10:37:20,044 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 10:37:20,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:37:20,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:37:20,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:37:20,045 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 10:37:20,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:37:22,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2487 backedges. 910 proven. 1467 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2018-11-18 10:37:22,111 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:37:22,111 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 10:37:22,112 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 924 with the following transitions: [2018-11-18 10:37:22,112 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], [217], [225], [233], [241], [249], [253], [255], [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], [534], [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], [694], [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], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-18 10:37:22,114 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 10:37:22,114 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 10:37:26,240 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 10:37:26,240 INFO L272 AbstractInterpreter]: Visited 194 different actions 782 times. Merged at 10 different actions 42 times. Widened at 1 different actions 2 times. Performed 8585 root evaluator evaluations with a maximum evaluation depth of 21. Performed 8585 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 12 fixpoints after 6 different actions. Largest state had 24 variables. [2018-11-18 10:37:26,253 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:37:26,253 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 10:37:26,253 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:37:26,253 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47d3d078-43f3-483f-bcf3-f9767f042dce/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 [2018-11-18 10:37:26,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:37:26,271 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 10:37:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:37:26,377 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:37:26,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2487 backedges. 1668 proven. 2 refuted. 0 times theorem prover too weak. 817 trivial. 0 not checked. [2018-11-18 10:37:26,659 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 10:37:27,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2487 backedges. 805 proven. 196 refuted. 0 times theorem prover too weak. 1486 trivial. 0 not checked. [2018-11-18 10:37:27,055 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 10:37:27,055 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 5, 5] total 34 [2018-11-18 10:37:27,055 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 10:37:27,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-11-18 10:37:27,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-11-18 10:37:27,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=994, Unknown=0, NotChecked=0, Total=1122 [2018-11-18 10:37:27,056 INFO L87 Difference]: Start difference. First operand 19329 states and 22674 transitions. Second operand 32 states. [2018-11-18 10:37:47,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:37:47,023 INFO L93 Difference]: Finished difference Result 45004 states and 63598 transitions. [2018-11-18 10:37:47,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-11-18 10:37:47,024 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 923 [2018-11-18 10:37:47,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:37:47,147 INFO L225 Difference]: With dead ends: 45004 [2018-11-18 10:37:47,148 INFO L226 Difference]: Without dead ends: 25377 [2018-11-18 10:37:47,242 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2095 GetRequests, 1913 SyntacticMatches, 4 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11996 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=4381, Invalid=27839, Unknown=0, NotChecked=0, Total=32220 [2018-11-18 10:37:47,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25377 states. [2018-11-18 10:37:47,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25377 to 24245. [2018-11-18 10:37:47,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24245 states. [2018-11-18 10:37:47,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24245 states to 24245 states and 28715 transitions. [2018-11-18 10:37:47,885 INFO L78 Accepts]: Start accepts. Automaton has 24245 states and 28715 transitions. Word has length 923 [2018-11-18 10:37:47,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:37:47,886 INFO L480 AbstractCegarLoop]: Abstraction has 24245 states and 28715 transitions. [2018-11-18 10:37:47,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-11-18 10:37:47,886 INFO L276 IsEmpty]: Start isEmpty. Operand 24245 states and 28715 transitions. [2018-11-18 10:37:47,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1112 [2018-11-18 10:37:47,903 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:37:47,904 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-11-18 10:37:47,904 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:37:47,904 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:37:47,904 INFO L82 PathProgramCache]: Analyzing trace with hash -562400509, now seen corresponding path program 1 times [2018-11-18 10:37:47,904 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 10:37:47,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:37:47,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:37:47,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:37:47,905 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 10:37:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:37:48,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3418 backedges. 1532 proven. 355 refuted. 0 times theorem prover too weak. 1531 trivial. 0 not checked. [2018-11-18 10:37:48,592 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:37:48,592 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 10:37:48,592 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1112 with the following transitions: [2018-11-18 10:37:48,592 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], [217], [225], [233], [241], [249], [253], [255], [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], [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], [694], [695], [699], [703], [707], [711], [715], [719], [723], [726], [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], [866], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-18 10:37:48,594 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 10:37:48,594 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 10:37:52,772 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 10:37:52,772 INFO L272 AbstractInterpreter]: Visited 195 different actions 785 times. Merged at 12 different actions 41 times. Widened at 1 different actions 1 times. Performed 8614 root evaluator evaluations with a maximum evaluation depth of 21. Performed 8614 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 14 fixpoints after 6 different actions. Largest state had 24 variables. [2018-11-18 10:37:52,780 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:37:52,780 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 10:37:52,780 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:37:52,780 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47d3d078-43f3-483f-bcf3-f9767f042dce/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 [2018-11-18 10:37:52,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:37:52,787 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 10:37:52,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:37:52,912 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:37:53,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3418 backedges. 2242 proven. 6 refuted. 0 times theorem prover too weak. 1170 trivial. 0 not checked. [2018-11-18 10:37:53,283 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 10:37:53,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3418 backedges. 1532 proven. 359 refuted. 0 times theorem prover too weak. 1527 trivial. 0 not checked. [2018-11-18 10:37:53,975 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 10:37:53,975 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 14 [2018-11-18 10:37:53,975 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 10:37:53,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 10:37:53,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 10:37:53,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2018-11-18 10:37:53,977 INFO L87 Difference]: Start difference. First operand 24245 states and 28715 transitions. Second operand 9 states. [2018-11-18 10:37:56,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:37:56,096 INFO L93 Difference]: Finished difference Result 53138 states and 64008 transitions. [2018-11-18 10:37:56,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-18 10:37:56,097 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1111 [2018-11-18 10:37:56,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:37:56,203 INFO L225 Difference]: With dead ends: 53138 [2018-11-18 10:37:56,204 INFO L226 Difference]: Without dead ends: 29267 [2018-11-18 10:37:56,300 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2251 GetRequests, 2227 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=167, Invalid=385, Unknown=0, NotChecked=0, Total=552 [2018-11-18 10:37:56,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29267 states. [2018-11-18 10:37:56,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29267 to 28999. [2018-11-18 10:37:56,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28999 states. [2018-11-18 10:37:56,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28999 states to 28999 states and 34336 transitions. [2018-11-18 10:37:56,886 INFO L78 Accepts]: Start accepts. Automaton has 28999 states and 34336 transitions. Word has length 1111 [2018-11-18 10:37:56,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:37:56,886 INFO L480 AbstractCegarLoop]: Abstraction has 28999 states and 34336 transitions. [2018-11-18 10:37:56,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 10:37:56,887 INFO L276 IsEmpty]: Start isEmpty. Operand 28999 states and 34336 transitions. [2018-11-18 10:37:56,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1669 [2018-11-18 10:37:56,914 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:37:56,915 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 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, 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, 10, 9, 9, 9, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 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, 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, 1] [2018-11-18 10:37:56,915 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:37:56,915 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:37:56,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1192216456, now seen corresponding path program 1 times [2018-11-18 10:37:56,916 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 10:37:56,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:37:56,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:37:56,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:37:56,916 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 10:37:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:38:00,402 INFO L134 CoverageAnalysis]: Checked inductivity of 8084 backedges. 1856 proven. 4808 refuted. 0 times theorem prover too weak. 1420 trivial. 0 not checked. [2018-11-18 10:38:00,402 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:38:00,402 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 10:38:00,402 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1669 with the following transitions: [2018-11-18 10:38:00,403 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], [217], [225], [233], [241], [249], [253], [255], [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], [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], [670], [671], [675], [679], [683], [687], [690], [691], [694], [695], [699], [703], [707], [711], [715], [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], [866], [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], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-18 10:38:00,405 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 10:38:00,405 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 10:38:04,624 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 10:38:04,624 INFO L272 AbstractInterpreter]: Visited 202 different actions 816 times. Merged at 13 different actions 44 times. Widened at 1 different actions 1 times. Performed 9040 root evaluator evaluations with a maximum evaluation depth of 21. Performed 9040 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 18 fixpoints after 9 different actions. Largest state had 24 variables. [2018-11-18 10:38:04,626 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:38:04,626 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 10:38:04,626 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:38:04,626 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47d3d078-43f3-483f-bcf3-f9767f042dce/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 [2018-11-18 10:38:04,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:38:04,633 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 10:38:04,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:38:04,850 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:38:05,825 INFO L134 CoverageAnalysis]: Checked inductivity of 8084 backedges. 2693 proven. 87 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2018-11-18 10:38:05,826 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 10:38:07,445 INFO L134 CoverageAnalysis]: Checked inductivity of 8084 backedges. 2771 proven. 122 refuted. 0 times theorem prover too weak. 5191 trivial. 0 not checked. [2018-11-18 10:38:07,461 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 10:38:07,462 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 8, 9] total 39 [2018-11-18 10:38:07,462 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 10:38:07,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-11-18 10:38:07,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-11-18 10:38:07,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1312, Unknown=0, NotChecked=0, Total=1482 [2018-11-18 10:38:07,464 INFO L87 Difference]: Start difference. First operand 28999 states and 34336 transitions. Second operand 33 states. [2018-11-18 10:38:29,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:38:29,070 INFO L93 Difference]: Finished difference Result 63900 states and 76937 transitions. [2018-11-18 10:38:29,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-11-18 10:38:29,070 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 1668 [2018-11-18 10:38:29,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:38:29,182 INFO L225 Difference]: With dead ends: 63900 [2018-11-18 10:38:29,182 INFO L226 Difference]: Without dead ends: 35275 [2018-11-18 10:38:29,276 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3612 GetRequests, 3411 SyntacticMatches, 4 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14352 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=5825, Invalid=33577, Unknown=0, NotChecked=0, Total=39402 [2018-11-18 10:38:29,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35275 states. [2018-11-18 10:38:29,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35275 to 33352. [2018-11-18 10:38:29,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33352 states. [2018-11-18 10:38:29,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33352 states to 33352 states and 38020 transitions. [2018-11-18 10:38:29,826 INFO L78 Accepts]: Start accepts. Automaton has 33352 states and 38020 transitions. Word has length 1668 [2018-11-18 10:38:29,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:38:29,827 INFO L480 AbstractCegarLoop]: Abstraction has 33352 states and 38020 transitions. [2018-11-18 10:38:29,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-11-18 10:38:29,827 INFO L276 IsEmpty]: Start isEmpty. Operand 33352 states and 38020 transitions. [2018-11-18 10:38:29,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1719 [2018-11-18 10:38:29,852 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:38:29,852 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 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, 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, 10, 9, 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, 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, 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] [2018-11-18 10:38:29,852 INFO L423 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:38:29,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:38:29,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1099398496, now seen corresponding path program 1 times [2018-11-18 10:38:29,853 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 10:38:29,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:38:29,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:38:29,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:38:29,853 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 10:38:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:38:32,063 INFO L134 CoverageAnalysis]: Checked inductivity of 8276 backedges. 1628 proven. 2026 refuted. 0 times theorem prover too weak. 4622 trivial. 0 not checked. [2018-11-18 10:38:32,063 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:38:32,063 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 10:38:32,063 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1719 with the following transitions: [2018-11-18 10:38:32,064 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], [217], [225], [233], [241], [249], [253], [255], [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], [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], [666], [667], [671], [675], [679], [683], [687], [690], [691], [694], [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], [866], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [930], [931], [934], [935], [939], [943], [946], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-18 10:38:32,066 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 10:38:32,066 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 10:38:39,742 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 10:38:39,742 INFO L272 AbstractInterpreter]: Visited 202 different actions 811 times. Merged at 11 different actions 39 times. Widened at 1 different actions 1 times. Performed 9049 root evaluator evaluations with a maximum evaluation depth of 22. Performed 9049 inverse root evaluator evaluations with a maximum inverse evaluation depth of 22. Found 18 fixpoints after 11 different actions. Largest state had 24 variables. [2018-11-18 10:38:39,744 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:38:39,744 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 10:38:39,745 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:38:39,745 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47d3d078-43f3-483f-bcf3-f9767f042dce/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 [2018-11-18 10:38:39,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:38:39,751 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 10:38:39,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:38:39,928 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:38:40,835 INFO L134 CoverageAnalysis]: Checked inductivity of 8276 backedges. 2770 proven. 2 refuted. 0 times theorem prover too weak. 5504 trivial. 0 not checked. [2018-11-18 10:38:40,835 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 10:38:42,394 INFO L134 CoverageAnalysis]: Checked inductivity of 8276 backedges. 1608 proven. 112 refuted. 0 times theorem prover too weak. 6556 trivial. 0 not checked. [2018-11-18 10:38:42,421 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 10:38:42,421 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 20 [2018-11-18 10:38:42,421 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 10:38:42,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-18 10:38:42,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-18 10:38:42,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2018-11-18 10:38:42,423 INFO L87 Difference]: Start difference. First operand 33352 states and 38020 transitions. Second operand 18 states. [2018-11-18 10:38:46,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:38:46,129 INFO L93 Difference]: Finished difference Result 67122 states and 77275 transitions. [2018-11-18 10:38:46,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-11-18 10:38:46,129 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1718 [2018-11-18 10:38:46,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:38:46,206 INFO L225 Difference]: With dead ends: 67122 [2018-11-18 10:38:46,206 INFO L226 Difference]: Without dead ends: 31890 [2018-11-18 10:38:46,334 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3530 GetRequests, 3468 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1095 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=784, Invalid=3122, Unknown=0, NotChecked=0, Total=3906 [2018-11-18 10:38:46,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31890 states. [2018-11-18 10:38:46,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31890 to 30423. [2018-11-18 10:38:46,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30423 states. [2018-11-18 10:38:46,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30423 states to 30423 states and 34242 transitions. [2018-11-18 10:38:46,797 INFO L78 Accepts]: Start accepts. Automaton has 30423 states and 34242 transitions. Word has length 1718 [2018-11-18 10:38:46,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:38:46,798 INFO L480 AbstractCegarLoop]: Abstraction has 30423 states and 34242 transitions. [2018-11-18 10:38:46,798 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-18 10:38:46,798 INFO L276 IsEmpty]: Start isEmpty. Operand 30423 states and 34242 transitions. [2018-11-18 10:38:46,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1847 [2018-11-18 10:38:46,830 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:38:46,831 INFO L375 BasicCegarLoop]: trace histogram [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, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 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, 12, 12, 12, 12, 12, 12, 12, 11, 10, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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] [2018-11-18 10:38:46,831 INFO L423 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:38:46,831 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:38:46,831 INFO L82 PathProgramCache]: Analyzing trace with hash 898555140, now seen corresponding path program 1 times [2018-11-18 10:38:46,831 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 10:38:46,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:38:46,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:38:46,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:38:46,832 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 10:38:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:38:48,199 INFO L134 CoverageAnalysis]: Checked inductivity of 9724 backedges. 1956 proven. 496 refuted. 0 times theorem prover too weak. 7272 trivial. 0 not checked. [2018-11-18 10:38:48,200 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:38:48,200 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 10:38:48,200 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1847 with the following transitions: [2018-11-18 10:38:48,200 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], [217], [225], [233], [241], [249], [253], [255], [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], [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], [662], [663], [667], [671], [675], [679], [683], [687], [690], [691], [694], [695], [699], [703], [707], [711], [715], [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], [866], [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], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-18 10:38:48,201 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 10:38:48,202 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 10:38:52,456 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 10:38:52,456 INFO L272 AbstractInterpreter]: Visited 202 different actions 811 times. Merged at 11 different actions 39 times. Widened at 1 different actions 1 times. Performed 9003 root evaluator evaluations with a maximum evaluation depth of 21. Performed 9003 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 18 fixpoints after 10 different actions. Largest state had 24 variables. [2018-11-18 10:38:52,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:38:52,460 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 10:38:52,460 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:38:52,461 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47d3d078-43f3-483f-bcf3-f9767f042dce/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 [2018-11-18 10:38:52,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:38:52,466 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 10:38:52,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:38:52,658 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:38:53,542 INFO L134 CoverageAnalysis]: Checked inductivity of 9724 backedges. 4347 proven. 2 refuted. 0 times theorem prover too weak. 5375 trivial. 0 not checked. [2018-11-18 10:38:53,542 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 10:38:54,545 INFO L134 CoverageAnalysis]: Checked inductivity of 9724 backedges. 1977 proven. 244 refuted. 0 times theorem prover too weak. 7503 trivial. 0 not checked. [2018-11-18 10:38:54,562 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 10:38:54,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 12 [2018-11-18 10:38:54,562 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 10:38:54,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-18 10:38:54,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 10:38:54,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-11-18 10:38:54,563 INFO L87 Difference]: Start difference. First operand 30423 states and 34242 transitions. Second operand 11 states. [2018-11-18 10:38:56,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:38:56,748 INFO L93 Difference]: Finished difference Result 59123 states and 66648 transitions. [2018-11-18 10:38:56,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-18 10:38:56,749 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1846 [2018-11-18 10:38:56,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:38:56,763 INFO L225 Difference]: With dead ends: 59123 [2018-11-18 10:38:56,763 INFO L226 Difference]: Without dead ends: 7436 [2018-11-18 10:38:56,868 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3735 GetRequests, 3702 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=266, Invalid=726, Unknown=0, NotChecked=0, Total=992 [2018-11-18 10:38:56,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7436 states. [2018-11-18 10:38:57,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7436 to 7082. [2018-11-18 10:38:57,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7082 states. [2018-11-18 10:38:57,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7082 states to 7082 states and 7780 transitions. [2018-11-18 10:38:57,034 INFO L78 Accepts]: Start accepts. Automaton has 7082 states and 7780 transitions. Word has length 1846 [2018-11-18 10:38:57,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:38:57,035 INFO L480 AbstractCegarLoop]: Abstraction has 7082 states and 7780 transitions. [2018-11-18 10:38:57,035 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-18 10:38:57,035 INFO L276 IsEmpty]: Start isEmpty. Operand 7082 states and 7780 transitions. [2018-11-18 10:38:57,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1952 [2018-11-18 10:38:57,061 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:38:57,062 INFO L375 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, 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, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 11, 11, 10, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1] [2018-11-18 10:38:57,062 INFO L423 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:38:57,062 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:38:57,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1608226779, now seen corresponding path program 1 times [2018-11-18 10:38:57,062 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 10:38:57,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:38:57,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:38:57,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:38:57,063 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 10:38:57,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:38:59,854 INFO L134 CoverageAnalysis]: Checked inductivity of 11179 backedges. 1948 proven. 2466 refuted. 0 times theorem prover too weak. 6765 trivial. 0 not checked. [2018-11-18 10:38:59,854 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:38:59,854 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 10:38:59,854 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1952 with the following transitions: [2018-11-18 10:38:59,855 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], [217], [225], [233], [241], [249], [253], [255], [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], [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], [666], [667], [670], [671], [675], [679], [683], [687], [690], [691], [694], [695], [699], [703], [707], [711], [715], [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], [866], [867], [871], [875], [879], [883], [887], [891], [894], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [935], [939], [943], [946], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-18 10:38:59,857 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 10:38:59,857 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 10:39:10,089 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 10:39:10,090 INFO L272 AbstractInterpreter]: Visited 204 different actions 819 times. Merged at 11 different actions 39 times. Widened at 1 different actions 1 times. Performed 9140 root evaluator evaluations with a maximum evaluation depth of 22. Performed 9140 inverse root evaluator evaluations with a maximum inverse evaluation depth of 22. Found 20 fixpoints after 13 different actions. Largest state had 24 variables. [2018-11-18 10:39:10,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:39:10,091 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 10:39:10,091 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:39:10,091 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47d3d078-43f3-483f-bcf3-f9767f042dce/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 [2018-11-18 10:39:10,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:39:10,097 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 10:39:10,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:39:10,306 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:39:11,345 INFO L134 CoverageAnalysis]: Checked inductivity of 11179 backedges. 3310 proven. 2 refuted. 0 times theorem prover too weak. 7867 trivial. 0 not checked. [2018-11-18 10:39:11,345 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 10:39:13,130 INFO L134 CoverageAnalysis]: Checked inductivity of 11179 backedges. 1924 proven. 112 refuted. 0 times theorem prover too weak. 9143 trivial. 0 not checked. [2018-11-18 10:39:13,147 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 10:39:13,147 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 20 [2018-11-18 10:39:13,147 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 10:39:13,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-18 10:39:13,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-18 10:39:13,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2018-11-18 10:39:13,149 INFO L87 Difference]: Start difference. First operand 7082 states and 7780 transitions. Second operand 18 states. [2018-11-18 10:39:15,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:39:15,217 INFO L93 Difference]: Finished difference Result 14505 states and 16344 transitions. [2018-11-18 10:39:15,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-11-18 10:39:15,218 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1951 [2018-11-18 10:39:15,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:39:15,235 INFO L225 Difference]: With dead ends: 14505 [2018-11-18 10:39:15,235 INFO L226 Difference]: Without dead ends: 7041 [2018-11-18 10:39:15,261 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3980 GetRequests, 3932 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 571 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=539, Invalid=1813, Unknown=0, NotChecked=0, Total=2352 [2018-11-18 10:39:15,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7041 states. [2018-11-18 10:39:15,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7041 to 6977. [2018-11-18 10:39:15,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6977 states. [2018-11-18 10:39:15,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6977 states to 6977 states and 7617 transitions. [2018-11-18 10:39:15,387 INFO L78 Accepts]: Start accepts. Automaton has 6977 states and 7617 transitions. Word has length 1951 [2018-11-18 10:39:15,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:39:15,389 INFO L480 AbstractCegarLoop]: Abstraction has 6977 states and 7617 transitions. [2018-11-18 10:39:15,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-18 10:39:15,389 INFO L276 IsEmpty]: Start isEmpty. Operand 6977 states and 7617 transitions. [2018-11-18 10:39:15,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1976 [2018-11-18 10:39:15,407 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:39:15,408 INFO L375 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, 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, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 11, 11, 11, 10, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 7, 7, 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, 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] [2018-11-18 10:39:15,408 INFO L423 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:39:15,409 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:39:15,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1133793157, now seen corresponding path program 1 times [2018-11-18 10:39:15,409 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 10:39:15,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:39:15,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:39:15,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:39:15,410 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 10:39:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:39:19,490 INFO L134 CoverageAnalysis]: Checked inductivity of 11313 backedges. 6225 proven. 1336 refuted. 0 times theorem prover too weak. 3752 trivial. 0 not checked. [2018-11-18 10:39:19,490 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:39:19,490 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 10:39:19,491 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1976 with the following transitions: [2018-11-18 10:39:19,491 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], [217], [225], [233], [241], [249], [253], [255], [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], [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], [670], [671], [675], [679], [683], [687], [690], [691], [694], [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], [866], [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], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-18 10:39:19,493 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 10:39:19,493 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 10:39:23,746 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 10:39:23,746 INFO L272 AbstractInterpreter]: Visited 204 different actions 824 times. Merged at 12 different actions 44 times. Widened at 1 different actions 1 times. Performed 9166 root evaluator evaluations with a maximum evaluation depth of 21. Performed 9166 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 20 fixpoints after 11 different actions. Largest state had 24 variables. [2018-11-18 10:39:23,752 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:39:23,752 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 10:39:23,752 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:39:23,752 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47d3d078-43f3-483f-bcf3-f9767f042dce/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 [2018-11-18 10:39:23,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:39:23,761 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 10:39:23,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:39:23,971 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:39:25,204 INFO L134 CoverageAnalysis]: Checked inductivity of 11313 backedges. 2043 proven. 2 refuted. 0 times theorem prover too weak. 9268 trivial. 0 not checked. [2018-11-18 10:39:25,205 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 10:39:26,633 INFO L134 CoverageAnalysis]: Checked inductivity of 11313 backedges. 2043 proven. 2 refuted. 0 times theorem prover too weak. 9268 trivial. 0 not checked. [2018-11-18 10:39:26,650 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 10:39:26,651 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 6, 6] total 20 [2018-11-18 10:39:26,651 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 10:39:26,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-18 10:39:26,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-18 10:39:26,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2018-11-18 10:39:26,653 INFO L87 Difference]: Start difference. First operand 6977 states and 7617 transitions. Second operand 19 states. [2018-11-18 10:39:29,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:39:29,794 INFO L93 Difference]: Finished difference Result 13723 states and 15026 transitions. [2018-11-18 10:39:29,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-11-18 10:39:29,795 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 1975 [2018-11-18 10:39:29,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:39:29,806 INFO L225 Difference]: With dead ends: 13723 [2018-11-18 10:39:29,806 INFO L226 Difference]: Without dead ends: 6912 [2018-11-18 10:39:29,819 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4041 GetRequests, 3986 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 761 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=676, Invalid=2294, Unknown=0, NotChecked=0, Total=2970 [2018-11-18 10:39:29,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6912 states. [2018-11-18 10:39:29,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6912 to 6720. [2018-11-18 10:39:29,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6720 states. [2018-11-18 10:39:29,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6720 states to 6720 states and 7146 transitions. [2018-11-18 10:39:29,934 INFO L78 Accepts]: Start accepts. Automaton has 6720 states and 7146 transitions. Word has length 1975 [2018-11-18 10:39:29,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:39:29,935 INFO L480 AbstractCegarLoop]: Abstraction has 6720 states and 7146 transitions. [2018-11-18 10:39:29,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-18 10:39:29,935 INFO L276 IsEmpty]: Start isEmpty. Operand 6720 states and 7146 transitions. [2018-11-18 10:39:29,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2012 [2018-11-18 10:39:29,954 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:39:29,954 INFO L375 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, 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, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 11, 11, 10, 9, 9, 9, 9, 9, 8, 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, 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, 1, 1, 1, 1] [2018-11-18 10:39:29,955 INFO L423 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:39:29,955 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:39:29,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1539545149, now seen corresponding path program 1 times [2018-11-18 10:39:29,955 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 10:39:29,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:39:29,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:39:29,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:39:29,956 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 10:39:30,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:39:32,871 INFO L134 CoverageAnalysis]: Checked inductivity of 12349 backedges. 2090 proven. 2642 refuted. 0 times theorem prover too weak. 7617 trivial. 0 not checked. [2018-11-18 10:39:32,871 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:39:32,871 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 10:39:32,871 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 2012 with the following transitions: [2018-11-18 10:39:32,872 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], [217], [225], [233], [241], [249], [253], [255], [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], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [586], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [667], [670], [671], [675], [679], [683], [687], [690], [691], [694], [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], [910], [911], [915], [919], [923], [926], [927], [931], [934], [935], [939], [943], [946], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-18 10:39:32,874 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 10:39:32,874 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 10:39:40,713 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 10:39:40,713 INFO L272 AbstractInterpreter]: Visited 205 different actions 829 times. Merged at 14 different actions 45 times. Widened at 1 different actions 1 times. Performed 9259 root evaluator evaluations with a maximum evaluation depth of 22. Performed 9259 inverse root evaluator evaluations with a maximum inverse evaluation depth of 22. Found 21 fixpoints after 12 different actions. Largest state had 24 variables. [2018-11-18 10:39:40,717 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:39:40,717 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 10:39:40,717 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:39:40,717 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47d3d078-43f3-483f-bcf3-f9767f042dce/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 [2018-11-18 10:39:40,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:39:40,724 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 10:39:40,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:39:40,948 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:39:42,067 INFO L134 CoverageAnalysis]: Checked inductivity of 12349 backedges. 3536 proven. 2 refuted. 0 times theorem prover too weak. 8811 trivial. 0 not checked. [2018-11-18 10:39:42,067 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 10:39:43,452 INFO L134 CoverageAnalysis]: Checked inductivity of 12349 backedges. 2062 proven. 112 refuted. 0 times theorem prover too weak. 10175 trivial. 0 not checked. [2018-11-18 10:39:43,469 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 10:39:43,470 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 5, 5] total 22 [2018-11-18 10:39:43,471 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 10:39:43,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-18 10:39:43,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-18 10:39:43,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2018-11-18 10:39:43,473 INFO L87 Difference]: Start difference. First operand 6720 states and 7146 transitions. Second operand 20 states. [2018-11-18 10:39:45,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:39:45,609 INFO L93 Difference]: Finished difference Result 9944 states and 10606 transitions. [2018-11-18 10:39:45,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-11-18 10:39:45,610 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 2011 [2018-11-18 10:39:45,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:39:45,616 INFO L225 Difference]: With dead ends: 9944 [2018-11-18 10:39:45,616 INFO L226 Difference]: Without dead ends: 4454 [2018-11-18 10:39:45,624 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4109 GetRequests, 4053 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 814 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=699, Invalid=2607, Unknown=0, NotChecked=0, Total=3306 [2018-11-18 10:39:45,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4454 states. [2018-11-18 10:39:45,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4454 to 3724. [2018-11-18 10:39:45,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3724 states. [2018-11-18 10:39:45,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3724 states to 3724 states and 3780 transitions. [2018-11-18 10:39:45,670 INFO L78 Accepts]: Start accepts. Automaton has 3724 states and 3780 transitions. Word has length 2011 [2018-11-18 10:39:45,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:39:45,671 INFO L480 AbstractCegarLoop]: Abstraction has 3724 states and 3780 transitions. [2018-11-18 10:39:45,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-18 10:39:45,671 INFO L276 IsEmpty]: Start isEmpty. Operand 3724 states and 3780 transitions. [2018-11-18 10:39:45,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2100 [2018-11-18 10:39:45,688 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:39:45,689 INFO L375 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, 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, 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, 12, 12, 11, 10, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 7, 7, 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, 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] [2018-11-18 10:39:45,689 INFO L423 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:39:45,689 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:39:45,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1396550669, now seen corresponding path program 1 times [2018-11-18 10:39:45,689 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 10:39:45,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:39:45,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:39:45,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:39:45,690 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 10:39:45,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:39:49,173 INFO L134 CoverageAnalysis]: Checked inductivity of 12935 backedges. 1062 proven. 4341 refuted. 0 times theorem prover too weak. 7532 trivial. 0 not checked. [2018-11-18 10:39:49,173 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:39:49,173 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 10:39:49,174 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 2100 with the following transitions: [2018-11-18 10:39:49,174 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], [217], [225], [233], [241], [249], [253], [255], [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], [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], [666], [667], [670], [671], [675], [679], [683], [687], [690], [691], [694], [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], [910], [911], [915], [919], [923], [926], [927], [931], [934], [935], [938], [939], [943], [946], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-18 10:39:49,175 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 10:39:49,176 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 10:39:56,476 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 10:39:56,477 INFO L272 AbstractInterpreter]: Visited 205 different actions 824 times. Merged at 11 different actions 40 times. Widened at 1 different actions 1 times. Performed 9243 root evaluator evaluations with a maximum evaluation depth of 22. Performed 9243 inverse root evaluator evaluations with a maximum inverse evaluation depth of 22. Found 21 fixpoints after 13 different actions. Largest state had 24 variables. [2018-11-18 10:39:56,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:39:56,480 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 10:39:56,480 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:39:56,480 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47d3d078-43f3-483f-bcf3-f9767f042dce/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 [2018-11-18 10:39:56,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:39:56,487 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 10:39:56,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:39:56,704 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:39:58,165 INFO L134 CoverageAnalysis]: Checked inductivity of 12935 backedges. 5832 proven. 2 refuted. 0 times theorem prover too weak. 7101 trivial. 0 not checked. [2018-11-18 10:39:58,165 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 10:40:00,744 INFO L134 CoverageAnalysis]: Checked inductivity of 12935 backedges. 1119 proven. 1441 refuted. 0 times theorem prover too weak. 10375 trivial. 0 not checked. [2018-11-18 10:40:00,760 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 10:40:00,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 6] total 18 [2018-11-18 10:40:00,761 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 10:40:00,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-18 10:40:00,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-18 10:40:00,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2018-11-18 10:40:00,762 INFO L87 Difference]: Start difference. First operand 3724 states and 3780 transitions. Second operand 16 states. [2018-11-18 10:40:02,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:40:02,300 INFO L93 Difference]: Finished difference Result 7262 states and 7376 transitions. [2018-11-18 10:40:02,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-18 10:40:02,300 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 2099 [2018-11-18 10:40:02,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:40:02,304 INFO L225 Difference]: With dead ends: 7262 [2018-11-18 10:40:02,304 INFO L226 Difference]: Without dead ends: 3544 [2018-11-18 10:40:02,307 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4237 GetRequests, 4204 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=272, Invalid=850, Unknown=0, NotChecked=0, Total=1122 [2018-11-18 10:40:02,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3544 states. [2018-11-18 10:40:02,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3544 to 3537. [2018-11-18 10:40:02,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3537 states. [2018-11-18 10:40:02,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3537 states to 3537 states and 3587 transitions. [2018-11-18 10:40:02,344 INFO L78 Accepts]: Start accepts. Automaton has 3537 states and 3587 transitions. Word has length 2099 [2018-11-18 10:40:02,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:40:02,344 INFO L480 AbstractCegarLoop]: Abstraction has 3537 states and 3587 transitions. [2018-11-18 10:40:02,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-18 10:40:02,344 INFO L276 IsEmpty]: Start isEmpty. Operand 3537 states and 3587 transitions. [2018-11-18 10:40:02,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2126 [2018-11-18 10:40:02,361 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:40:02,362 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 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, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 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, 13, 12, 12, 11, 10, 10, 10, 10, 9, 8, 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, 1] [2018-11-18 10:40:02,362 INFO L423 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:40:02,362 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:40:02,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1600234863, now seen corresponding path program 1 times [2018-11-18 10:40:02,363 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 10:40:02,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:40:02,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:40:02,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:40:02,363 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 10:40:02,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:40:07,981 INFO L134 CoverageAnalysis]: Checked inductivity of 13929 backedges. 2025 proven. 8210 refuted. 0 times theorem prover too weak. 3694 trivial. 0 not checked. [2018-11-18 10:40:07,981 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:40:07,981 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 10:40:07,982 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 2126 with the following transitions: [2018-11-18 10:40:07,982 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], [217], [225], [233], [241], [249], [253], [255], [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], [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], [666], [667], [670], [671], [675], [679], [683], [686], [687], [690], [691], [694], [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], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-18 10:40:07,984 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 10:40:07,984 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 10:40:15,251 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 10:40:15,251 INFO L272 AbstractInterpreter]: Visited 206 different actions 833 times. Merged at 13 different actions 45 times. Widened at 1 different actions 2 times. Performed 9331 root evaluator evaluations with a maximum evaluation depth of 22. Performed 9331 inverse root evaluator evaluations with a maximum inverse evaluation depth of 22. Found 23 fixpoints after 14 different actions. Largest state had 24 variables. [2018-11-18 10:40:15,256 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:40:15,256 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 10:40:15,257 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:40:15,257 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47d3d078-43f3-483f-bcf3-f9767f042dce/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 [2018-11-18 10:40:15,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:40:15,263 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 10:40:15,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:40:15,481 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:40:24,794 WARN L180 SmtUtils]: Spent 9.05 s on a formula simplification. DAG size of input: 484 DAG size of output: 49 [2018-11-18 10:40:26,275 INFO L134 CoverageAnalysis]: Checked inductivity of 13929 backedges. 2278 proven. 40 refuted. 0 times theorem prover too weak. 11611 trivial. 0 not checked. [2018-11-18 10:40:26,275 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 10:40:27,941 INFO L134 CoverageAnalysis]: Checked inductivity of 13929 backedges. 2278 proven. 40 refuted. 0 times theorem prover too weak. 11611 trivial. 0 not checked. [2018-11-18 10:40:27,957 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 10:40:27,958 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 8, 7] total 42 [2018-11-18 10:40:27,958 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 10:40:27,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-11-18 10:40:27,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-11-18 10:40:27,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1508, Unknown=0, NotChecked=0, Total=1722 [2018-11-18 10:40:27,960 INFO L87 Difference]: Start difference. First operand 3537 states and 3587 transitions. Second operand 38 states. [2018-11-18 10:40:33,668 WARN L180 SmtUtils]: Spent 838.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2018-11-18 10:40:37,109 WARN L180 SmtUtils]: Spent 854.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 80 [2018-11-18 10:40:39,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:40:39,081 INFO L93 Difference]: Finished difference Result 4015 states and 4133 transitions. [2018-11-18 10:40:39,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-11-18 10:40:39,081 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 2125 [2018-11-18 10:40:39,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:40:39,082 INFO L225 Difference]: With dead ends: 4015 [2018-11-18 10:40:39,082 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 10:40:39,087 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4397 GetRequests, 4270 SyntacticMatches, 11 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4357 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=2463, Invalid=11343, Unknown=0, NotChecked=0, Total=13806 [2018-11-18 10:40:39,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 10:40:39,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 10:40:39,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 10:40:39,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 10:40:39,088 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2125 [2018-11-18 10:40:39,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:40:39,088 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 10:40:39,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-11-18 10:40:39,088 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 10:40:39,088 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 10:40:39,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 10:40:39,140 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:39,340 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:39,345 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:39,360 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:39,488 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:39,715 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:39,948 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:39,949 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:39,949 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:40,043 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:40,079 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:40,086 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:40,091 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:40,154 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:40,154 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:40,270 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:40,303 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:40,406 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:40,596 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:40,597 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:40,686 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:40,693 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:41,695 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:41,966 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:42,084 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:42,106 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:42,107 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:42,238 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:42,316 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:42,342 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:42,438 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:42,466 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:42,467 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:42,467 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:42,715 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:42,967 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:42,968 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:42,968 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:43,079 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:43,223 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:43,766 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:44,351 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:44,510 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:44,675 WARN L180 SmtUtils]: Spent 4.95 s on a formula simplification. DAG size of input: 1642 DAG size of output: 1345 [2018-11-18 10:40:44,831 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:44,870 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:44,870 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:44,930 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:44,976 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:45,009 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:45,266 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:45,267 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:45,315 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:45,452 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:45,460 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:45,470 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:45,645 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:45,673 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:45,716 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:46,546 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:46,843 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:46,920 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:46,946 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:47,028 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:47,057 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:47,057 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:47,057 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:47,260 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:47,542 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:47,543 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:47,543 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:47,649 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:47,767 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:48,423 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:49,013 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:49,156 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:40:49,338 WARN L180 SmtUtils]: Spent 4.66 s on a formula simplification. DAG size of input: 1663 DAG size of output: 1374 [2018-11-18 10:40:51,938 WARN L180 SmtUtils]: Spent 2.51 s on a formula simplification. DAG size of input: 601 DAG size of output: 154 [2018-11-18 10:41:00,070 WARN L180 SmtUtils]: Spent 8.12 s on a formula simplification. DAG size of input: 1142 DAG size of output: 153 [2018-11-18 10:41:08,447 WARN L180 SmtUtils]: Spent 8.37 s on a formula simplification. DAG size of input: 1172 DAG size of output: 148 [2018-11-18 10:41:08,449 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 10:41:08,449 INFO L421 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)) [2018-11-18 10:41:08,449 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 10:41:08,449 INFO L425 ceAbstractionStarter]: For program point L432(lines 432 870) no Hoare annotation was computed. [2018-11-18 10:41:08,449 INFO L425 ceAbstractionStarter]: For program point L366(lines 366 870) no Hoare annotation was computed. [2018-11-18 10:41:08,450 INFO L425 ceAbstractionStarter]: For program point L168-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,450 INFO L425 ceAbstractionStarter]: For program point L102-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,450 INFO L425 ceAbstractionStarter]: For program point L36-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,450 INFO L425 ceAbstractionStarter]: For program point L235(lines 235 870) no Hoare annotation was computed. [2018-11-18 10:41:08,450 INFO L425 ceAbstractionStarter]: For program point L169(line 169) no Hoare annotation was computed. [2018-11-18 10:41:08,450 INFO L425 ceAbstractionStarter]: For program point L103(line 103) no Hoare annotation was computed. [2018-11-18 10:41:08,450 INFO L425 ceAbstractionStarter]: For program point L37(line 37) no Hoare annotation was computed. [2018-11-18 10:41:08,450 INFO L425 ceAbstractionStarter]: For program point L764(lines 764 870) no Hoare annotation was computed. [2018-11-18 10:41:08,450 INFO L425 ceAbstractionStarter]: For program point L632(lines 632 870) no Hoare annotation was computed. [2018-11-18 10:41:08,450 INFO L425 ceAbstractionStarter]: For program point L500(lines 500 870) no Hoare annotation was computed. [2018-11-18 10:41:08,450 INFO L425 ceAbstractionStarter]: For program point L831(lines 831 870) no Hoare annotation was computed. [2018-11-18 10:41:08,450 INFO L425 ceAbstractionStarter]: For program point L171-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,450 INFO L425 ceAbstractionStarter]: For program point L105-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,450 INFO L425 ceAbstractionStarter]: For program point L39-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,450 INFO L425 ceAbstractionStarter]: For program point L700(lines 700 870) no Hoare annotation was computed. [2018-11-18 10:41:08,450 INFO L425 ceAbstractionStarter]: For program point L568(lines 568 870) no Hoare annotation was computed. [2018-11-18 10:41:08,450 INFO L425 ceAbstractionStarter]: For program point L172(line 172) no Hoare annotation was computed. [2018-11-18 10:41:08,450 INFO L425 ceAbstractionStarter]: For program point L106(line 106) no Hoare annotation was computed. [2018-11-18 10:41:08,450 INFO L425 ceAbstractionStarter]: For program point L40(line 40) no Hoare annotation was computed. [2018-11-18 10:41:08,450 INFO L425 ceAbstractionStarter]: For program point L305(lines 305 870) no Hoare annotation was computed. [2018-11-18 10:41:08,450 INFO L425 ceAbstractionStarter]: For program point L438(lines 438 870) no Hoare annotation was computed. [2018-11-18 10:41:08,450 INFO L425 ceAbstractionStarter]: For program point L372(lines 372 870) no Hoare annotation was computed. [2018-11-18 10:41:08,450 INFO L425 ceAbstractionStarter]: For program point L174-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,450 INFO L425 ceAbstractionStarter]: For program point L108-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,450 INFO L425 ceAbstractionStarter]: For program point L42-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,450 INFO L425 ceAbstractionStarter]: For program point L241(lines 241 870) no Hoare annotation was computed. [2018-11-18 10:41:08,451 INFO L425 ceAbstractionStarter]: For program point L175(line 175) no Hoare annotation was computed. [2018-11-18 10:41:08,451 INFO L425 ceAbstractionStarter]: For program point L109(line 109) no Hoare annotation was computed. [2018-11-18 10:41:08,451 INFO L425 ceAbstractionStarter]: For program point L43(line 43) no Hoare annotation was computed. [2018-11-18 10:41:08,451 INFO L425 ceAbstractionStarter]: For program point L638(lines 638 870) no Hoare annotation was computed. [2018-11-18 10:41:08,451 INFO L425 ceAbstractionStarter]: For program point L506(lines 506 870) no Hoare annotation was computed. [2018-11-18 10:41:08,451 INFO L425 ceAbstractionStarter]: For program point L837(lines 837 870) no Hoare annotation was computed. [2018-11-18 10:41:08,451 INFO L425 ceAbstractionStarter]: For program point L771(lines 771 870) no Hoare annotation was computed. [2018-11-18 10:41:08,451 INFO L425 ceAbstractionStarter]: For program point L573(lines 573 870) no Hoare annotation was computed. [2018-11-18 10:41:08,451 INFO L425 ceAbstractionStarter]: For program point L177-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,451 INFO L425 ceAbstractionStarter]: For program point L111-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,451 INFO L425 ceAbstractionStarter]: For program point L45-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,451 INFO L425 ceAbstractionStarter]: For program point L706(lines 706 870) no Hoare annotation was computed. [2018-11-18 10:41:08,451 INFO L425 ceAbstractionStarter]: For program point L178(line 178) no Hoare annotation was computed. [2018-11-18 10:41:08,451 INFO L425 ceAbstractionStarter]: For program point L112(line 112) no Hoare annotation was computed. [2018-11-18 10:41:08,451 INFO L425 ceAbstractionStarter]: For program point L46(line 46) no Hoare annotation was computed. [2018-11-18 10:41:08,451 INFO L425 ceAbstractionStarter]: For program point L311(lines 311 870) no Hoare annotation was computed. [2018-11-18 10:41:08,451 INFO L425 ceAbstractionStarter]: For program point L444(lines 444 870) no Hoare annotation was computed. [2018-11-18 10:41:08,451 INFO L425 ceAbstractionStarter]: For program point L378(lines 378 870) no Hoare annotation was computed. [2018-11-18 10:41:08,451 INFO L425 ceAbstractionStarter]: For program point L180-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,451 INFO L425 ceAbstractionStarter]: For program point L114-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,451 INFO L425 ceAbstractionStarter]: For program point L48-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,451 INFO L425 ceAbstractionStarter]: For program point L247(lines 247 870) no Hoare annotation was computed. [2018-11-18 10:41:08,451 INFO L425 ceAbstractionStarter]: For program point L181(line 181) no Hoare annotation was computed. [2018-11-18 10:41:08,451 INFO L425 ceAbstractionStarter]: For program point L115(line 115) no Hoare annotation was computed. [2018-11-18 10:41:08,451 INFO L425 ceAbstractionStarter]: For program point L49(line 49) no Hoare annotation was computed. [2018-11-18 10:41:08,452 INFO L425 ceAbstractionStarter]: For program point L842(lines 842 870) no Hoare annotation was computed. [2018-11-18 10:41:08,452 INFO L425 ceAbstractionStarter]: For program point L644(lines 644 870) no Hoare annotation was computed. [2018-11-18 10:41:08,452 INFO L425 ceAbstractionStarter]: For program point L512(lines 512 870) no Hoare annotation was computed. [2018-11-18 10:41:08,452 INFO L425 ceAbstractionStarter]: For program point L777(lines 777 870) no Hoare annotation was computed. [2018-11-18 10:41:08,452 INFO L425 ceAbstractionStarter]: For program point L579(lines 579 870) no Hoare annotation was computed. [2018-11-18 10:41:08,452 INFO L425 ceAbstractionStarter]: For program point L183-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,452 INFO L425 ceAbstractionStarter]: For program point L117-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,452 INFO L425 ceAbstractionStarter]: For program point L51-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,452 INFO L425 ceAbstractionStarter]: For program point calculate_outputEXIT(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,452 INFO L425 ceAbstractionStarter]: For program point L712(lines 712 870) no Hoare annotation was computed. [2018-11-18 10:41:08,452 INFO L425 ceAbstractionStarter]: For program point L184(line 184) no Hoare annotation was computed. [2018-11-18 10:41:08,452 INFO L425 ceAbstractionStarter]: For program point L118(line 118) no Hoare annotation was computed. [2018-11-18 10:41:08,452 INFO L425 ceAbstractionStarter]: For program point L52(line 52) no Hoare annotation was computed. [2018-11-18 10:41:08,452 INFO L425 ceAbstractionStarter]: For program point L449(lines 449 870) no Hoare annotation was computed. [2018-11-18 10:41:08,452 INFO L425 ceAbstractionStarter]: For program point L317(lines 317 870) no Hoare annotation was computed. [2018-11-18 10:41:08,452 INFO L425 ceAbstractionStarter]: For program point L384(lines 384 870) no Hoare annotation was computed. [2018-11-18 10:41:08,452 INFO L425 ceAbstractionStarter]: For program point L252(lines 252 870) no Hoare annotation was computed. [2018-11-18 10:41:08,452 INFO L425 ceAbstractionStarter]: For program point L186-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,452 INFO L425 ceAbstractionStarter]: For program point L120-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,452 INFO L425 ceAbstractionStarter]: For program point L54-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,452 INFO L425 ceAbstractionStarter]: For program point L187(line 187) no Hoare annotation was computed. [2018-11-18 10:41:08,452 INFO L425 ceAbstractionStarter]: For program point L121(line 121) no Hoare annotation was computed. [2018-11-18 10:41:08,452 INFO L425 ceAbstractionStarter]: For program point L55(line 55) no Hoare annotation was computed. [2018-11-18 10:41:08,452 INFO L425 ceAbstractionStarter]: For program point L848(lines 848 870) no Hoare annotation was computed. [2018-11-18 10:41:08,452 INFO L425 ceAbstractionStarter]: For program point L650(lines 650 870) no Hoare annotation was computed. [2018-11-18 10:41:08,452 INFO L425 ceAbstractionStarter]: For program point L518(lines 518 870) no Hoare annotation was computed. [2018-11-18 10:41:08,453 INFO L425 ceAbstractionStarter]: For program point L783(lines 783 870) no Hoare annotation was computed. [2018-11-18 10:41:08,453 INFO L425 ceAbstractionStarter]: For program point L585(lines 585 870) no Hoare annotation was computed. [2018-11-18 10:41:08,453 INFO L425 ceAbstractionStarter]: For program point L189-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,453 INFO L425 ceAbstractionStarter]: For program point L123-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,453 INFO L425 ceAbstractionStarter]: For program point L57-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,453 INFO L425 ceAbstractionStarter]: For program point L718(lines 718 870) no Hoare annotation was computed. [2018-11-18 10:41:08,453 INFO L425 ceAbstractionStarter]: For program point L454(lines 454 870) no Hoare annotation was computed. [2018-11-18 10:41:08,453 INFO L425 ceAbstractionStarter]: For program point L190(line 190) no Hoare annotation was computed. [2018-11-18 10:41:08,453 INFO L425 ceAbstractionStarter]: For program point L124(line 124) no Hoare annotation was computed. [2018-11-18 10:41:08,453 INFO L425 ceAbstractionStarter]: For program point L58(line 58) no Hoare annotation was computed. [2018-11-18 10:41:08,453 INFO L425 ceAbstractionStarter]: For program point L323(lines 323 870) no Hoare annotation was computed. [2018-11-18 10:41:08,453 INFO L425 ceAbstractionStarter]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 115) no Hoare annotation was computed. [2018-11-18 10:41:08,453 INFO L421 ceAbstractionStarter]: At program point calculate_outputENTRY(lines 20 872) the Hoare annotation is: (let ((.cse37 (= 10 |old(~a21~0)|))) (let ((.cse39 (= 7 |old(~a21~0)|)) (.cse19 (not .cse37)) (.cse6 (not (= 1 |old(~a24~0)|))) (.cse36 (= 6 |old(~a21~0)|))) (let ((.cse10 (not .cse36)) (.cse33 (= 7 |old(~a15~0)|)) (.cse30 (< 73282 |old(~a12~0)|)) (.cse26 (< 7 |old(~a15~0)|)) (.cse40 (or .cse19 .cse6)) (.cse13 (= |old(~a15~0)| ~a15~0)) (.cse12 (= ~a21~0 |old(~a21~0)|)) (.cse4 (= 1 ~a24~0)) (.cse5 (= 9 ~a15~0)) (.cse2 (= ~a12~0 |old(~a12~0)|)) (.cse24 (= 8 ~a15~0)) (.cse25 (= ~a24~0 1)) (.cse22 (= 10 ~a21~0)) (.cse32 (not .cse39)) (.cse1 (not (= 9 |old(~a15~0)|))) (.cse20 (< |old(~a12~0)| 81)) (.cse9 (not (= 8 |old(~a21~0)|)))) (let ((.cse0 (not (= 9 |old(~a21~0)|))) (.cse3 (= ~a21~0 9)) (.cse18 (and (or .cse1 (or .cse32 .cse20) .cse6) (or .cse1 .cse20 .cse6 .cse9))) (.cse21 (and .cse2 .cse24 .cse25 .cse22)) (.cse23 (< 76 |old(~a12~0)|)) (.cse7 (and .cse2 .cse12 .cse4 .cse5)) (.cse28 (< 72 |old(~a12~0)|)) (.cse29 (<= |old(~a12~0)| 18)) (.cse17 (= |calculate_output_#in~input| 0)) (.cse16 (not (= 8 |old(~a15~0)|))) (.cse15 (and .cse2 .cse12 .cse24 .cse25)) (.cse14 (not (= 5 |old(~a15~0)|))) (.cse27 (and .cse2 .cse13 .cse4 .cse22)) (.cse8 (< 11 |old(~a12~0)|)) (.cse38 (and (or .cse10 .cse33 .cse30 .cse26) (or .cse1 .cse20 .cse40))) (.cse11 (= ~a24~0 |old(~a24~0)|)) (.cse34 (= ~a15~0 |old(~a15~0)|)) (.cse31 (and .cse2 .cse12 .cse13 .cse4))) (and (or .cse0 .cse1 (and .cse2 .cse3 .cse4 .cse5) .cse6) (or .cse1 .cse7 .cse6 .cse8 .cse9) (or .cse10 (and (<= ~a12~0 |old(~a12~0)|) .cse11 .cse12 .cse13) .cse6 .cse14) (or .cse15 .cse10 .cse6 .cse16 .cse17 (< 0 (+ |old(~a12~0)| 43))) (or .cse12 .cse18) (or (or .cse16 .cse17) .cse19 .cse20 .cse6 .cse21) (or .cse1 .cse19 (and .cse2 .cse4 .cse22 .cse5) .cse6 .cse8) (or .cse0 .cse23 .cse6 .cse16 .cse17 (and .cse2 .cse3 .cse24 .cse25)) (or .cse0 (and .cse2 .cse3 .cse13 .cse4) .cse6 .cse26) (or .cse19 .cse27 .cse6 .cse28 .cse26 .cse29) (or .cse16 .cse17 .cse15 .cse9 .cse20 .cse6 .cse30) (or .cse7 .cse1 .cse10 .cse6 (< 95434 |old(~a12~0)|) (<= |old(~a12~0)| 95380)) (or .cse31 .cse32 .cse33 .cse6 .cse26) (or .cse18 (and (and .cse2 .cse11) .cse34)) (or .cse10 .cse6 .cse16 .cse17 (forall ((v_prenex_4 Int)) (let ((.cse35 (* 68 v_prenex_4))) (or (< |old(~a12~0)| (+ (* 5 (div .cse35 10)) 517842)) (<= v_prenex_4 11) (< .cse35 0)))) .cse15) (or .cse19 .cse21 .cse6 .cse8 .cse16 .cse17) (or .cse23 .cse16 .cse17 .cse15 .cse9 .cse6) (or .cse1 .cse7 .cse6 .cse28 .cse29 .cse9) (or (not (= 6 |old(~a15~0)|)) (and .cse2 .cse11 .cse12 .cse34) (or .cse10 .cse6)) (or .cse36 .cse20 .cse31 .cse6 .cse26 .cse37) (or .cse8 .cse38 (and .cse11 (and (= ~a21~0 6) .cse2) .cse34)) (or (and .cse2 .cse11 .cse12 .cse13) .cse39 .cse6 (not .cse33)) (or (or .cse32 .cse17) .cse6 .cse8 .cse16 .cse15) (or .cse14 .cse40 .cse27) (or .cse31 .cse6 .cse8 .cse26) (or .cse6 .cse38 (and .cse11 .cse2 .cse12 .cse34)) (or .cse31 .cse6 .cse26 .cse9)))))) [2018-11-18 10:41:08,453 INFO L425 ceAbstractionStarter]: For program point L390(lines 390 870) no Hoare annotation was computed. [2018-11-18 10:41:08,453 INFO L425 ceAbstractionStarter]: For program point L258(lines 258 870) no Hoare annotation was computed. [2018-11-18 10:41:08,453 INFO L425 ceAbstractionStarter]: For program point L192-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,454 INFO L425 ceAbstractionStarter]: For program point L126-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,454 INFO L425 ceAbstractionStarter]: For program point L60-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,454 INFO L425 ceAbstractionStarter]: For program point L193(line 193) no Hoare annotation was computed. [2018-11-18 10:41:08,454 INFO L425 ceAbstractionStarter]: For program point L127(line 127) no Hoare annotation was computed. [2018-11-18 10:41:08,454 INFO L425 ceAbstractionStarter]: For program point L61(line 61) no Hoare annotation was computed. [2018-11-18 10:41:08,454 INFO L425 ceAbstractionStarter]: For program point L854(lines 854 870) no Hoare annotation was computed. [2018-11-18 10:41:08,454 INFO L425 ceAbstractionStarter]: For program point L656(lines 656 870) no Hoare annotation was computed. [2018-11-18 10:41:08,454 INFO L425 ceAbstractionStarter]: For program point L524(lines 524 870) no Hoare annotation was computed. [2018-11-18 10:41:08,454 INFO L425 ceAbstractionStarter]: For program point L789(lines 789 870) no Hoare annotation was computed. [2018-11-18 10:41:08,454 INFO L425 ceAbstractionStarter]: For program point L591(lines 591 870) no Hoare annotation was computed. [2018-11-18 10:41:08,454 INFO L425 ceAbstractionStarter]: For program point L195-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,454 INFO L425 ceAbstractionStarter]: For program point L129-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,454 INFO L425 ceAbstractionStarter]: For program point L63-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,454 INFO L425 ceAbstractionStarter]: For program point L724(lines 724 870) no Hoare annotation was computed. [2018-11-18 10:41:08,454 INFO L425 ceAbstractionStarter]: For program point L460(lines 460 870) no Hoare annotation was computed. [2018-11-18 10:41:08,455 INFO L425 ceAbstractionStarter]: For program point L196(line 196) no Hoare annotation was computed. [2018-11-18 10:41:08,455 INFO L425 ceAbstractionStarter]: For program point L130(line 130) no Hoare annotation was computed. [2018-11-18 10:41:08,455 INFO L425 ceAbstractionStarter]: For program point L64(line 64) no Hoare annotation was computed. [2018-11-18 10:41:08,455 INFO L425 ceAbstractionStarter]: For program point L329(lines 329 870) no Hoare annotation was computed. [2018-11-18 10:41:08,455 INFO L425 ceAbstractionStarter]: For program point L396(lines 396 870) no Hoare annotation was computed. [2018-11-18 10:41:08,455 INFO L425 ceAbstractionStarter]: For program point L264(lines 264 870) no Hoare annotation was computed. [2018-11-18 10:41:08,455 INFO L425 ceAbstractionStarter]: For program point L198-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,455 INFO L425 ceAbstractionStarter]: For program point L132-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,455 INFO L425 ceAbstractionStarter]: For program point L66-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,455 INFO L425 ceAbstractionStarter]: For program point L859(lines 859 870) no Hoare annotation was computed. [2018-11-18 10:41:08,455 INFO L425 ceAbstractionStarter]: For program point L199(line 199) no Hoare annotation was computed. [2018-11-18 10:41:08,455 INFO L425 ceAbstractionStarter]: For program point L133(line 133) no Hoare annotation was computed. [2018-11-18 10:41:08,455 INFO L425 ceAbstractionStarter]: For program point L67(line 67) no Hoare annotation was computed. [2018-11-18 10:41:08,455 INFO L425 ceAbstractionStarter]: For program point L662(lines 662 870) no Hoare annotation was computed. [2018-11-18 10:41:08,455 INFO L425 ceAbstractionStarter]: For program point L530(lines 530 870) no Hoare annotation was computed. [2018-11-18 10:41:08,456 INFO L425 ceAbstractionStarter]: For program point L795(lines 795 870) no Hoare annotation was computed. [2018-11-18 10:41:08,456 INFO L425 ceAbstractionStarter]: For program point L597(lines 597 870) no Hoare annotation was computed. [2018-11-18 10:41:08,456 INFO L425 ceAbstractionStarter]: For program point L201-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,456 INFO L425 ceAbstractionStarter]: For program point L135-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,456 INFO L425 ceAbstractionStarter]: For program point L69-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,456 INFO L425 ceAbstractionStarter]: For program point L730(lines 730 870) no Hoare annotation was computed. [2018-11-18 10:41:08,456 INFO L425 ceAbstractionStarter]: For program point L202(line 202) no Hoare annotation was computed. [2018-11-18 10:41:08,456 INFO L425 ceAbstractionStarter]: For program point L136(line 136) no Hoare annotation was computed. [2018-11-18 10:41:08,456 INFO L425 ceAbstractionStarter]: For program point L70(line 70) no Hoare annotation was computed. [2018-11-18 10:41:08,456 INFO L425 ceAbstractionStarter]: For program point L467(lines 467 870) no Hoare annotation was computed. [2018-11-18 10:41:08,456 INFO L425 ceAbstractionStarter]: For program point L335(lines 335 870) no Hoare annotation was computed. [2018-11-18 10:41:08,456 INFO L425 ceAbstractionStarter]: For program point L269(lines 269 870) no Hoare annotation was computed. [2018-11-18 10:41:08,456 INFO L425 ceAbstractionStarter]: For program point L402(lines 402 870) no Hoare annotation was computed. [2018-11-18 10:41:08,456 INFO L425 ceAbstractionStarter]: For program point L138-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,456 INFO L425 ceAbstractionStarter]: For program point L72-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,457 INFO L425 ceAbstractionStarter]: For program point L865(lines 865 870) no Hoare annotation was computed. [2018-11-18 10:41:08,457 INFO L425 ceAbstractionStarter]: For program point L139(line 139) no Hoare annotation was computed. [2018-11-18 10:41:08,457 INFO L425 ceAbstractionStarter]: For program point L73(line 73) no Hoare annotation was computed. [2018-11-18 10:41:08,457 INFO L425 ceAbstractionStarter]: For program point L668(lines 668 870) no Hoare annotation was computed. [2018-11-18 10:41:08,457 INFO L425 ceAbstractionStarter]: For program point L536(lines 536 870) no Hoare annotation was computed. [2018-11-18 10:41:08,457 INFO L425 ceAbstractionStarter]: For program point L801(lines 801 870) no Hoare annotation was computed. [2018-11-18 10:41:08,457 INFO L425 ceAbstractionStarter]: For program point L735(lines 735 870) no Hoare annotation was computed. [2018-11-18 10:41:08,457 INFO L425 ceAbstractionStarter]: For program point L603(lines 603 870) no Hoare annotation was computed. [2018-11-18 10:41:08,457 INFO L425 ceAbstractionStarter]: For program point L141-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,457 INFO L425 ceAbstractionStarter]: For program point L75-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,457 INFO L425 ceAbstractionStarter]: For program point L472(lines 472 870) no Hoare annotation was computed. [2018-11-18 10:41:08,457 INFO L425 ceAbstractionStarter]: For program point L142(line 142) no Hoare annotation was computed. [2018-11-18 10:41:08,457 INFO L425 ceAbstractionStarter]: For program point L76(line 76) no Hoare annotation was computed. [2018-11-18 10:41:08,457 INFO L425 ceAbstractionStarter]: For program point L341(lines 341 870) no Hoare annotation was computed. [2018-11-18 10:41:08,457 INFO L425 ceAbstractionStarter]: For program point L275(lines 275 870) no Hoare annotation was computed. [2018-11-18 10:41:08,458 INFO L425 ceAbstractionStarter]: For program point L408(lines 408 870) no Hoare annotation was computed. [2018-11-18 10:41:08,458 INFO L425 ceAbstractionStarter]: For program point L144-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,458 INFO L425 ceAbstractionStarter]: For program point L78-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,458 INFO L425 ceAbstractionStarter]: For program point L541(lines 541 870) no Hoare annotation was computed. [2018-11-18 10:41:08,458 INFO L425 ceAbstractionStarter]: For program point L211(lines 211 870) no Hoare annotation was computed. [2018-11-18 10:41:08,458 INFO L425 ceAbstractionStarter]: For program point L145(line 145) no Hoare annotation was computed. [2018-11-18 10:41:08,458 INFO L425 ceAbstractionStarter]: For program point L79(line 79) no Hoare annotation was computed. [2018-11-18 10:41:08,458 INFO L425 ceAbstractionStarter]: For program point L674(lines 674 870) no Hoare annotation was computed. [2018-11-18 10:41:08,458 INFO L425 ceAbstractionStarter]: For program point L807(lines 807 870) no Hoare annotation was computed. [2018-11-18 10:41:08,458 INFO L425 ceAbstractionStarter]: For program point L741(lines 741 870) no Hoare annotation was computed. [2018-11-18 10:41:08,458 INFO L425 ceAbstractionStarter]: For program point L609(lines 609 870) no Hoare annotation was computed. [2018-11-18 10:41:08,458 INFO L425 ceAbstractionStarter]: For program point L147-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,458 INFO L425 ceAbstractionStarter]: For program point L81-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,458 INFO L425 ceAbstractionStarter]: For program point L478(lines 478 870) no Hoare annotation was computed. [2018-11-18 10:41:08,458 INFO L425 ceAbstractionStarter]: For program point L280(lines 280 870) no Hoare annotation was computed. [2018-11-18 10:41:08,459 INFO L425 ceAbstractionStarter]: For program point L148(line 148) no Hoare annotation was computed. [2018-11-18 10:41:08,459 INFO L425 ceAbstractionStarter]: For program point L82(line 82) no Hoare annotation was computed. [2018-11-18 10:41:08,459 INFO L425 ceAbstractionStarter]: For program point L677(lines 677 870) no Hoare annotation was computed. [2018-11-18 10:41:08,459 INFO L425 ceAbstractionStarter]: For program point L347(lines 347 870) no Hoare annotation was computed. [2018-11-18 10:41:08,459 INFO L425 ceAbstractionStarter]: For program point L414(lines 414 870) no Hoare annotation was computed. [2018-11-18 10:41:08,459 INFO L425 ceAbstractionStarter]: For program point L150-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,459 INFO L425 ceAbstractionStarter]: For program point L84-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,459 INFO L425 ceAbstractionStarter]: For program point calculate_outputFINAL(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,459 INFO L425 ceAbstractionStarter]: For program point L547(lines 547 870) no Hoare annotation was computed. [2018-11-18 10:41:08,459 INFO L425 ceAbstractionStarter]: For program point L217(lines 217 870) no Hoare annotation was computed. [2018-11-18 10:41:08,459 INFO L425 ceAbstractionStarter]: For program point L151(line 151) no Hoare annotation was computed. [2018-11-18 10:41:08,459 INFO L425 ceAbstractionStarter]: For program point L85(line 85) no Hoare annotation was computed. [2018-11-18 10:41:08,459 INFO L425 ceAbstractionStarter]: For program point L747(lines 747 870) no Hoare annotation was computed. [2018-11-18 10:41:08,459 INFO L425 ceAbstractionStarter]: For program point L615(lines 615 870) no Hoare annotation was computed. [2018-11-18 10:41:08,459 INFO L425 ceAbstractionStarter]: For program point L153-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,459 INFO L425 ceAbstractionStarter]: For program point L87-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,459 INFO L425 ceAbstractionStarter]: For program point L21(lines 21 23) no Hoare annotation was computed. [2018-11-18 10:41:08,459 INFO L425 ceAbstractionStarter]: For program point L21-2(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,459 INFO L425 ceAbstractionStarter]: For program point L814(lines 814 870) no Hoare annotation was computed. [2018-11-18 10:41:08,459 INFO L425 ceAbstractionStarter]: For program point L484(lines 484 870) no Hoare annotation was computed. [2018-11-18 10:41:08,459 INFO L425 ceAbstractionStarter]: For program point L286(lines 286 870) no Hoare annotation was computed. [2018-11-18 10:41:08,459 INFO L425 ceAbstractionStarter]: For program point L154(line 154) no Hoare annotation was computed. [2018-11-18 10:41:08,459 INFO L425 ceAbstractionStarter]: For program point L88(line 88) no Hoare annotation was computed. [2018-11-18 10:41:08,459 INFO L425 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-11-18 10:41:08,459 INFO L425 ceAbstractionStarter]: For program point L683(lines 683 870) no Hoare annotation was computed. [2018-11-18 10:41:08,459 INFO L425 ceAbstractionStarter]: For program point L353(lines 353 870) no Hoare annotation was computed. [2018-11-18 10:41:08,460 INFO L425 ceAbstractionStarter]: For program point L552(lines 552 870) no Hoare annotation was computed. [2018-11-18 10:41:08,460 INFO L425 ceAbstractionStarter]: For program point L420(lines 420 870) no Hoare annotation was computed. [2018-11-18 10:41:08,460 INFO L425 ceAbstractionStarter]: For program point L156-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,460 INFO L425 ceAbstractionStarter]: For program point L90-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,460 INFO L425 ceAbstractionStarter]: For program point L24-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,460 INFO L425 ceAbstractionStarter]: For program point L223(lines 223 870) no Hoare annotation was computed. [2018-11-18 10:41:08,460 INFO L425 ceAbstractionStarter]: For program point L157(line 157) no Hoare annotation was computed. [2018-11-18 10:41:08,460 INFO L425 ceAbstractionStarter]: For program point L91(line 91) no Hoare annotation was computed. [2018-11-18 10:41:08,460 INFO L425 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-11-18 10:41:08,460 INFO L425 ceAbstractionStarter]: For program point L752(lines 752 870) no Hoare annotation was computed. [2018-11-18 10:41:08,460 INFO L425 ceAbstractionStarter]: For program point L819(lines 819 870) no Hoare annotation was computed. [2018-11-18 10:41:08,460 INFO L425 ceAbstractionStarter]: For program point L621(lines 621 870) no Hoare annotation was computed. [2018-11-18 10:41:08,460 INFO L425 ceAbstractionStarter]: For program point L555(lines 555 870) no Hoare annotation was computed. [2018-11-18 10:41:08,460 INFO L425 ceAbstractionStarter]: For program point L159-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,460 INFO L425 ceAbstractionStarter]: For program point L93-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,460 INFO L425 ceAbstractionStarter]: For program point L27-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,460 INFO L425 ceAbstractionStarter]: For program point L688(lines 688 870) no Hoare annotation was computed. [2018-11-18 10:41:08,460 INFO L425 ceAbstractionStarter]: For program point L490(lines 490 870) no Hoare annotation was computed. [2018-11-18 10:41:08,460 INFO L425 ceAbstractionStarter]: For program point L160(line 160) no Hoare annotation was computed. [2018-11-18 10:41:08,460 INFO L425 ceAbstractionStarter]: For program point L94(line 94) no Hoare annotation was computed. [2018-11-18 10:41:08,460 INFO L425 ceAbstractionStarter]: For program point L28(line 28) no Hoare annotation was computed. [2018-11-18 10:41:08,460 INFO L425 ceAbstractionStarter]: For program point L359(lines 359 870) no Hoare annotation was computed. [2018-11-18 10:41:08,460 INFO L425 ceAbstractionStarter]: For program point L293(lines 293 870) no Hoare annotation was computed. [2018-11-18 10:41:08,460 INFO L425 ceAbstractionStarter]: For program point L426(lines 426 870) no Hoare annotation was computed. [2018-11-18 10:41:08,460 INFO L425 ceAbstractionStarter]: For program point L162-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,460 INFO L425 ceAbstractionStarter]: For program point L96-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,460 INFO L425 ceAbstractionStarter]: For program point L30-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,461 INFO L425 ceAbstractionStarter]: For program point L229(lines 229 870) no Hoare annotation was computed. [2018-11-18 10:41:08,461 INFO L425 ceAbstractionStarter]: For program point L163(line 163) no Hoare annotation was computed. [2018-11-18 10:41:08,461 INFO L425 ceAbstractionStarter]: For program point L97(line 97) no Hoare annotation was computed. [2018-11-18 10:41:08,461 INFO L425 ceAbstractionStarter]: For program point L31(line 31) no Hoare annotation was computed. [2018-11-18 10:41:08,461 INFO L425 ceAbstractionStarter]: For program point L758(lines 758 870) no Hoare annotation was computed. [2018-11-18 10:41:08,461 INFO L425 ceAbstractionStarter]: For program point L626(lines 626 870) no Hoare annotation was computed. [2018-11-18 10:41:08,461 INFO L425 ceAbstractionStarter]: For program point L825(lines 825 870) no Hoare annotation was computed. [2018-11-18 10:41:08,461 INFO L425 ceAbstractionStarter]: For program point L561(lines 561 870) no Hoare annotation was computed. [2018-11-18 10:41:08,461 INFO L425 ceAbstractionStarter]: For program point L495(lines 495 870) no Hoare annotation was computed. [2018-11-18 10:41:08,461 INFO L425 ceAbstractionStarter]: For program point L165-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,461 INFO L425 ceAbstractionStarter]: For program point L99-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,461 INFO L425 ceAbstractionStarter]: For program point L33-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 10:41:08,461 INFO L425 ceAbstractionStarter]: For program point L694(lines 694 870) no Hoare annotation was computed. [2018-11-18 10:41:08,461 INFO L425 ceAbstractionStarter]: For program point L166(line 166) no Hoare annotation was computed. [2018-11-18 10:41:08,461 INFO L425 ceAbstractionStarter]: For program point L100(line 100) no Hoare annotation was computed. [2018-11-18 10:41:08,461 INFO L425 ceAbstractionStarter]: For program point L34(line 34) no Hoare annotation was computed. [2018-11-18 10:41:08,461 INFO L425 ceAbstractionStarter]: For program point L299(lines 299 870) no Hoare annotation was computed. [2018-11-18 10:41:08,461 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 10:41:08,461 INFO L421 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)) [2018-11-18 10:41:08,461 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 10:41:08,461 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 10:41:08,461 INFO L421 ceAbstractionStarter]: At program point mainENTRY(lines 874 890) the Hoare annotation is: (or (not (= 8 |old(~a15~0)|)) (and (= 8 ~a15~0) (= (+ ~a12~0 49) 0) (= ~a24~0 1) (= ~a21~0 7)) (not (= 7 |old(~a21~0)|)) (not (= 1 |old(~a24~0)|)) (not (= 0 (+ |old(~a12~0)| 49)))) [2018-11-18 10:41:08,461 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 874 890) no Hoare annotation was computed. [2018-11-18 10:41:08,462 INFO L421 ceAbstractionStarter]: At program point L888(line 888) the Hoare annotation is: (let ((.cse23 (not (= 1 |old(~a24~0)|))) (.cse13 (= 7 ~a21~0))) (let ((.cse1 (= ~a15~0 9)) (.cse9 (= 1 ~a24~0)) (.cse33 (not (= ~a15~0 7))) (.cse35 (not .cse13)) (.cse12 (not (= main_~input~0 0))) (.cse14 (= ~a24~0 1)) (.cse34 (or (not (= 6 |old(~a21~0)|)) (not (= 5 |old(~a15~0)|)) .cse23))) (let ((.cse16 (and (not (= ~a21~0 0)) .cse35 .cse12 (= 8 ~a15~0) .cse14 .cse34)) (.cse32 (= ~a21~0 8)) (.cse31 (and (not .cse1) .cse35 .cse9 .cse33 .cse34)) (.cse29 (<= ~a12~0 73282)) (.cse22 (= ~a21~0 6)) (.cse3 (<= ~a15~0 7)) (.cse19 (<= 81 ~a12~0)) (.cse15 (and .cse35 .cse9)) (.cse28 (= 10 ~a21~0)) (.cse20 (= 9 ~a15~0))) (let ((.cse10 (or (and .cse29 (and .cse22 .cse33) .cse3) (and .cse19 .cse15 .cse28 .cse20))) (.cse6 (and .cse31 (<= ~a12~0 80))) (.cse7 (= ~a21~0 10)) (.cse11 (= ~a24~0 |old(~a24~0)|)) (.cse8 (= 7 ~a15~0)) (.cse0 (and .cse15 .cse32)) (.cse4 (< 18 ~a12~0)) (.cse5 (<= ~a12~0 72)) (.cse27 (and .cse22 .cse12 (= ~a15~0 8) .cse14 .cse34)) (.cse2 (<= ~a12~0 11)) (.cse17 (<= ~a12~0 76)) (.cse30 (and (and .cse16 .cse32) (not (= 10 |old(~a21~0)|)))) (.cse24 (= 6 ~a21~0)) (.cse18 (= ~a21~0 9)) (.cse25 (= 5 ~a15~0)) (.cse21 (= ~a21~0 7))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse5 (and .cse6 .cse7)) (and .cse8 .cse9 .cse2) (and .cse10 .cse2) (and .cse10 .cse11) (and (and .cse12 .cse13 .cse14) .cse2 (= ~a15~0 |old(~a15~0)|)) (and .cse15 .cse8) (not (= 7 |old(~a21~0)|)) (and .cse16 .cse17 .cse18) (or (and .cse0 .cse19 .cse20) (and .cse19 (and .cse9 .cse21) .cse20)) (and .cse22 (<= ~a12~0 95434) .cse9 .cse20 (< 95380 ~a12~0)) .cse23 (and .cse3 (and .cse6 .cse2)) (and .cse24 .cse9 .cse25) (not (= 8 |old(~a15~0)|)) (and (and .cse15 .cse7) .cse2 .cse20) (and (= 9 ~a21~0) .cse11 .cse20) (and .cse19 .cse8 .cse9) (and (exists ((v_prenex_4 Int)) (let ((.cse26 (* 68 v_prenex_4))) (and (<= (+ (* 5 (div .cse26 10)) 517842) ~a12~0) (<= 0 .cse26) (< 11 v_prenex_4)))) .cse27) (and (and .cse16 .cse28) (< 80 ~a12~0)) (and (and .cse0 .cse4 .cse5) .cse1) (and (<= (+ ~a12~0 43) 0) .cse27) (not (= 0 (+ |old(~a12~0)| 49))) (and .cse16 .cse2 .cse28) (and .cse29 .cse19 .cse30) (and (= 6 ~a15~0) (and .cse22 .cse9)) (and .cse3 (and .cse31 .cse32)) (and .cse17 .cse30) (and .cse19 (not .cse28) .cse3 .cse31 (not .cse24)) (and (and .cse3 .cse31) .cse18) (and .cse31 .cse28 .cse25) (and .cse3 (and .cse9 .cse33 .cse21))))))) [2018-11-18 10:41:08,462 INFO L425 ceAbstractionStarter]: For program point L888-1(line 888) no Hoare annotation was computed. [2018-11-18 10:41:08,462 INFO L425 ceAbstractionStarter]: For program point L885(line 885) no Hoare annotation was computed. [2018-11-18 10:41:08,462 INFO L425 ceAbstractionStarter]: For program point L880-1(lines 880 889) no Hoare annotation was computed. [2018-11-18 10:41:08,462 INFO L421 ceAbstractionStarter]: At program point L880-3(lines 880 889) the Hoare annotation is: (let ((.cse21 (= 7 ~a21~0))) (let ((.cse32 (= ~a24~0 1)) (.cse5 (= ~a15~0 9)) (.cse33 (not .cse21)) (.cse15 (= 1 ~a24~0)) (.cse31 (not (= ~a15~0 7))) (.cse26 (not (= 1 |old(~a24~0)|)))) (let ((.cse29 (and (not .cse5) .cse33 .cse15 .cse31 (or (not (= 6 |old(~a21~0)|)) (not (= 5 |old(~a15~0)|)) .cse26))) (.cse2 (<= ~a12~0 73282)) (.cse25 (= ~a21~0 6)) (.cse7 (<= ~a15~0 7)) (.cse3 (<= 81 ~a12~0)) (.cse18 (and .cse33 .cse15)) (.cse13 (= 10 ~a21~0)) (.cse23 (= 9 ~a15~0)) (.cse12 (and (not (= ~a21~0 0)) .cse33 (= ~a15~0 8) .cse32)) (.cse30 (= ~a21~0 8))) (let ((.cse1 (and .cse12 .cse30)) (.cse16 (or (and .cse2 (and .cse25 .cse31) .cse7) (and .cse3 .cse18 .cse13 .cse23))) (.cse0 (<= ~a12~0 76)) (.cse20 (and .cse25 (= 8 ~a15~0) .cse32)) (.cse10 (and .cse29 (<= ~a12~0 80))) (.cse11 (= ~a21~0 10)) (.cse6 (<= ~a12~0 11)) (.cse17 (= ~a24~0 |old(~a24~0)|)) (.cse14 (= 7 ~a15~0)) (.cse4 (and .cse18 .cse30)) (.cse8 (< 18 ~a12~0)) (.cse9 (<= ~a12~0 72)) (.cse27 (= 6 ~a21~0)) (.cse22 (= ~a21~0 9)) (.cse28 (= 5 ~a15~0)) (.cse24 (= ~a21~0 7))) (or (and .cse0 .cse1) (and .cse2 .cse3 .cse1) (and .cse4 .cse5 .cse6) (and .cse7 .cse8 .cse9 (and .cse10 .cse11)) (and .cse12 .cse6 .cse13) (and .cse14 .cse15 .cse6) (and .cse16 .cse6) (and .cse16 .cse17) (and .cse18 .cse14) (not (= 7 |old(~a21~0)|)) (and (exists ((v_prenex_4 Int)) (let ((.cse19 (* 68 v_prenex_4))) (and (<= (+ (* 5 (div .cse19 10)) 517842) ~a12~0) (<= 0 .cse19) (< 11 v_prenex_4)))) .cse20) (and .cse21 .cse17 .cse6 (= ~a15~0 |old(~a15~0)|)) (and (and .cse0 .cse15 .cse22) (= |old(~a15~0)| ~a15~0)) (and (<= (+ ~a12~0 43) 0) .cse20) (or (and .cse4 .cse3 .cse23) (and .cse3 (and .cse15 .cse24) .cse23)) (and .cse25 (<= ~a12~0 95434) .cse15 .cse23 (< 95380 ~a12~0)) .cse26 (and .cse7 (and .cse10 .cse6)) (and .cse27 .cse15 .cse28) (not (= 8 |old(~a15~0)|)) (and (and .cse18 .cse11) .cse6 .cse23) (and (= 9 ~a21~0) .cse17 .cse23) (and .cse3 .cse14 .cse15) (and (and .cse4 .cse8 .cse9) .cse5) (not (= 0 (+ |old(~a12~0)| 49))) (and (= 6 ~a15~0) (and .cse25 .cse15)) (and .cse7 (and .cse29 .cse30)) (and .cse3 (not .cse13) .cse7 .cse29 (not .cse27)) (and (and .cse7 .cse29) .cse22) (and .cse29 .cse13 .cse28) (and (and .cse12 .cse13) (< 80 ~a12~0)) (and .cse7 (and .cse15 .cse31 .cse24))))))) [2018-11-18 10:41:08,462 INFO L425 ceAbstractionStarter]: For program point L880-4(lines 874 890) no Hoare annotation was computed. [2018-11-18 10:41:08,466 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2018-11-18 10:41:08,467 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2018-11-18 10:41:08,467 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2018-11-18 10:41:08,475 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2018-11-18 10:41:08,475 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2018-11-18 10:41:08,476 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2018-11-18 10:41:08,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 10:41:08 BoogieIcfgContainer [2018-11-18 10:41:08,484 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 10:41:08,484 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 10:41:08,484 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 10:41:08,484 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 10:41:08,485 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:34:51" (3/4) ... [2018-11-18 10:41:08,488 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 10:41:08,493 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 10:41:08,493 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure calculate_output [2018-11-18 10:41:08,493 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 10:41:08,507 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-18 10:41:08,508 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-18 10:41:08,538 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((((((((((((a12 <= 76 && (((!(a21 == 0) && !(7 == a21)) && a15 == 8) && a24 == 1) && a21 == 8) || ((a12 <= 73282 && 81 <= a12) && (((!(a21 == 0) && !(7 == a21)) && a15 == 8) && a24 == 1) && a21 == 8)) || ((((!(7 == a21) && 1 == a24) && a21 == 8) && a15 == 9) && a12 <= 11)) || (((a15 <= 7 && 18 < a12) && a12 <= 72) && (((((!(a15 == 9) && !(7 == a21)) && 1 == a24) && !(a15 == 7)) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24)))) && a12 <= 80) && a21 == 10)) || (((((!(a21 == 0) && !(7 == a21)) && a15 == 8) && a24 == 1) && a12 <= 11) && 10 == a21)) || ((7 == a15 && 1 == a24) && a12 <= 11)) || ((((a12 <= 73282 && a21 == 6 && !(a15 == 7)) && a15 <= 7) || (((81 <= a12 && !(7 == a21) && 1 == a24) && 10 == a21) && 9 == a15)) && a12 <= 11)) || ((((a12 <= 73282 && a21 == 6 && !(a15 == 7)) && a15 <= 7) || (((81 <= a12 && !(7 == a21) && 1 == a24) && 10 == a21) && 9 == a15)) && a24 == \old(a24))) || ((!(7 == a21) && 1 == a24) && 7 == a15)) || !(7 == \old(a21))) || ((\exists v_prenex_4 : int :: (5 * (68 * v_prenex_4 / 10) + 517842 <= a12 && 0 <= 68 * v_prenex_4) && 11 < v_prenex_4) && (a21 == 6 && 8 == a15) && a24 == 1)) || (((7 == a21 && a24 == \old(a24)) && a12 <= 11) && a15 == \old(a15))) || (((a12 <= 76 && 1 == a24) && a21 == 9) && \old(a15) == a15)) || (a12 + 43 <= 0 && (a21 == 6 && 8 == a15) && a24 == 1)) || ((((!(7 == a21) && 1 == a24) && a21 == 8) && 81 <= a12) && 9 == a15) || ((81 <= a12 && 1 == a24 && a21 == 7) && 9 == a15)) || ((((a21 == 6 && a12 <= 95434) && 1 == a24) && 9 == a15) && 95380 < a12)) || !(1 == \old(a24))) || (a15 <= 7 && (((((!(a15 == 9) && !(7 == a21)) && 1 == a24) && !(a15 == 7)) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24)))) && a12 <= 80) && a12 <= 11)) || ((6 == a21 && 1 == a24) && 5 == a15)) || !(8 == \old(a15))) || ((((!(7 == a21) && 1 == a24) && a21 == 10) && a12 <= 11) && 9 == a15)) || ((9 == a21 && a24 == \old(a24)) && 9 == a15)) || ((81 <= a12 && 7 == a15) && 1 == a24)) || (((((!(7 == a21) && 1 == a24) && a21 == 8) && 18 < a12) && a12 <= 72) && a15 == 9)) || !(0 == \old(a12) + 49)) || (6 == a15 && a21 == 6 && 1 == a24)) || (a15 <= 7 && ((((!(a15 == 9) && !(7 == a21)) && 1 == a24) && !(a15 == 7)) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24)))) && a21 == 8)) || ((((81 <= a12 && !(10 == a21)) && a15 <= 7) && (((!(a15 == 9) && !(7 == a21)) && 1 == a24) && !(a15 == 7)) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24)))) && !(6 == a21))) || ((a15 <= 7 && (((!(a15 == 9) && !(7 == a21)) && 1 == a24) && !(a15 == 7)) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24)))) && a21 == 9)) || ((((((!(a15 == 9) && !(7 == a21)) && 1 == a24) && !(a15 == 7)) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24)))) && 10 == a21) && 5 == a15)) || (((((!(a21 == 0) && !(7 == a21)) && a15 == 8) && a24 == 1) && 10 == a21) && 80 < a12)) || (a15 <= 7 && (1 == a24 && !(a15 == 7)) && a21 == 7) [2018-11-18 10:41:08,626 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_47d3d078-43f3-483f-bcf3-f9767f042dce/bin-2019/utaipan/witness.graphml [2018-11-18 10:41:08,627 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 10:41:08,627 INFO L168 Benchmark]: Toolchain (without parser) took 378125.75 ms. Allocated memory was 1.0 GB in the beginning and 4.7 GB in the end (delta: 3.6 GB). Free memory was 950.4 MB in the beginning and 3.0 GB in the end (delta: -2.0 GB). Peak memory consumption was 1.6 GB. Max. memory is 11.5 GB. [2018-11-18 10:41:08,628 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:41:08,628 INFO L168 Benchmark]: CACSL2BoogieTranslator took 421.18 ms. Allocated memory is still 1.0 GB. Free memory was 950.4 MB in the beginning and 912.7 MB in the end (delta: 37.7 MB). Peak memory consumption was 37.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:41:08,628 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 912.7 MB in the beginning and 1.1 GB in the end (delta: -213.5 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2018-11-18 10:41:08,628 INFO L168 Benchmark]: Boogie Preprocessor took 53.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 11.5 GB. [2018-11-18 10:41:08,628 INFO L168 Benchmark]: RCFGBuilder took 920.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 989.9 MB in the end (delta: 122.9 MB). Peak memory consumption was 122.9 MB. Max. memory is 11.5 GB. [2018-11-18 10:41:08,629 INFO L168 Benchmark]: TraceAbstraction took 376504.57 ms. Allocated memory was 1.2 GB in the beginning and 4.7 GB in the end (delta: 3.5 GB). Free memory was 989.9 MB in the beginning and 3.0 GB in the end (delta: -2.0 GB). Peak memory consumption was 4.7 GB. Max. memory is 11.5 GB. [2018-11-18 10:41:08,629 INFO L168 Benchmark]: Witness Printer took 142.44 ms. Allocated memory is still 4.7 GB. Free memory was 3.0 GB in the beginning and 3.0 GB in the end (delta: 75.8 MB). Peak memory consumption was 75.8 MB. Max. memory is 11.5 GB. [2018-11-18 10:41:08,630 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 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 421.18 ms. Allocated memory is still 1.0 GB. Free memory was 950.4 MB in the beginning and 912.7 MB in the end (delta: 37.7 MB). Peak memory consumption was 37.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 80.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 912.7 MB in the beginning and 1.1 GB in the end (delta: -213.5 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 53.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 920.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 989.9 MB in the end (delta: 122.9 MB). Peak memory consumption was 122.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 376504.57 ms. Allocated memory was 1.2 GB in the beginning and 4.7 GB in the end (delta: 3.5 GB). Free memory was 989.9 MB in the beginning and 3.0 GB in the end (delta: -2.0 GB). Peak memory consumption was 4.7 GB. Max. memory is 11.5 GB. * Witness Printer took 142.44 ms. Allocated memory is still 4.7 GB. Free memory was 3.0 GB in the beginning and 3.0 GB in the end (delta: 75.8 MB). Peak memory consumption was 75.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 115]: 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 [2018-11-18 10:41:08,633 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2018-11-18 10:41:08,634 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2018-11-18 10:41:08,634 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2018-11-18 10:41:08,635 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2018-11-18 10:41:08,636 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2018-11-18 10:41:08,636 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] Derived loop invariant: (((((((((((((((((((((((((((((((a12 <= 76 && (((!(a21 == 0) && !(7 == a21)) && a15 == 8) && a24 == 1) && a21 == 8) || ((a12 <= 73282 && 81 <= a12) && (((!(a21 == 0) && !(7 == a21)) && a15 == 8) && a24 == 1) && a21 == 8)) || ((((!(7 == a21) && 1 == a24) && a21 == 8) && a15 == 9) && a12 <= 11)) || (((a15 <= 7 && 18 < a12) && a12 <= 72) && (((((!(a15 == 9) && !(7 == a21)) && 1 == a24) && !(a15 == 7)) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24)))) && a12 <= 80) && a21 == 10)) || (((((!(a21 == 0) && !(7 == a21)) && a15 == 8) && a24 == 1) && a12 <= 11) && 10 == a21)) || ((7 == a15 && 1 == a24) && a12 <= 11)) || ((((a12 <= 73282 && a21 == 6 && !(a15 == 7)) && a15 <= 7) || (((81 <= a12 && !(7 == a21) && 1 == a24) && 10 == a21) && 9 == a15)) && a12 <= 11)) || ((((a12 <= 73282 && a21 == 6 && !(a15 == 7)) && a15 <= 7) || (((81 <= a12 && !(7 == a21) && 1 == a24) && 10 == a21) && 9 == a15)) && a24 == \old(a24))) || ((!(7 == a21) && 1 == a24) && 7 == a15)) || !(7 == \old(a21))) || ((\exists v_prenex_4 : int :: (5 * (68 * v_prenex_4 / 10) + 517842 <= a12 && 0 <= 68 * v_prenex_4) && 11 < v_prenex_4) && (a21 == 6 && 8 == a15) && a24 == 1)) || (((7 == a21 && a24 == \old(a24)) && a12 <= 11) && a15 == \old(a15))) || (((a12 <= 76 && 1 == a24) && a21 == 9) && \old(a15) == a15)) || (a12 + 43 <= 0 && (a21 == 6 && 8 == a15) && a24 == 1)) || ((((!(7 == a21) && 1 == a24) && a21 == 8) && 81 <= a12) && 9 == a15) || ((81 <= a12 && 1 == a24 && a21 == 7) && 9 == a15)) || ((((a21 == 6 && a12 <= 95434) && 1 == a24) && 9 == a15) && 95380 < a12)) || !(1 == \old(a24))) || (a15 <= 7 && (((((!(a15 == 9) && !(7 == a21)) && 1 == a24) && !(a15 == 7)) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24)))) && a12 <= 80) && a12 <= 11)) || ((6 == a21 && 1 == a24) && 5 == a15)) || !(8 == \old(a15))) || ((((!(7 == a21) && 1 == a24) && a21 == 10) && a12 <= 11) && 9 == a15)) || ((9 == a21 && a24 == \old(a24)) && 9 == a15)) || ((81 <= a12 && 7 == a15) && 1 == a24)) || (((((!(7 == a21) && 1 == a24) && a21 == 8) && 18 < a12) && a12 <= 72) && a15 == 9)) || !(0 == \old(a12) + 49)) || (6 == a15 && a21 == 6 && 1 == a24)) || (a15 <= 7 && ((((!(a15 == 9) && !(7 == a21)) && 1 == a24) && !(a15 == 7)) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24)))) && a21 == 8)) || ((((81 <= a12 && !(10 == a21)) && a15 <= 7) && (((!(a15 == 9) && !(7 == a21)) && 1 == a24) && !(a15 == 7)) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24)))) && !(6 == a21))) || ((a15 <= 7 && (((!(a15 == 9) && !(7 == a21)) && 1 == a24) && !(a15 == 7)) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24)))) && a21 == 9)) || ((((((!(a15 == 9) && !(7 == a21)) && 1 == a24) && !(a15 == 7)) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24)))) && 10 == a21) && 5 == a15)) || (((((!(a21 == 0) && !(7 == a21)) && a15 == 8) && a24 == 1) && 10 == a21) && 80 < a12)) || (a15 <= 7 && (1 == a24 && !(a15 == 7)) && a21 == 7) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. SAFE Result, 376.4s OverallTime, 22 OverallIterations, 17 TraceHistogramMax, 166.8s AutomataDifference, 0.0s DeadEndRemovalTime, 29.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 2966 SDtfs, 93926 SDslu, 10036 SDs, 0 SdLazy, 127618 SolverSat, 16071 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 119.0s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 44704 GetRequests, 43600 SyntacticMatches, 34 SemanticMatches, 1070 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37544 ImplicationChecksByTransitivity, 36.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33352occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 96.5s AbstIntTime, 18 AbstIntIterations, 4 AbstIntStrong, 0.9973850314636391 AbsIntWeakeningRatio, 0.08401253918495298 AbsIntAvgWeakeningVarsNumRemoved, 16.038244514106584 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.7s AutomataMinimizationTime, 22 MinimizatonAttempts, 8369 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 1802 PreInvPairs, 2336 NumberOfFragments, 2515 HoareAnnotationTreeSize, 1802 FomulaSimplifications, 8215234 FormulaSimplificationTreeSizeReduction, 10.2s HoareSimplificationTime, 7 FomulaSimplificationsInter, 1160498 FormulaSimplificationTreeSizeReductionInter, 19.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.7s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 44.4s InterpolantComputationTime, 43534 NumberOfCodeBlocks, 43202 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 64292 ConstructedInterpolants, 9 QuantifiedInterpolants, 347209921 SizeOfPredicates, 58 NumberOfNonLiveVariables, 27744 ConjunctsInSsa, 171 ConjunctsInUnsatCore, 52 InterpolantComputations, 3 PerfectInterpolantSequences, 269496/303688 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...