./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product59_true-unreach-call_false-termination.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_9f527784-1844-40c1-8da2-76cbb963f0c9/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_9f527784-1844-40c1-8da2-76cbb963f0c9/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_9f527784-1844-40c1-8da2-76cbb963f0c9/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_9f527784-1844-40c1-8da2-76cbb963f0c9/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product59_true-unreach-call_false-termination.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_9f527784-1844-40c1-8da2-76cbb963f0c9/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_9f527784-1844-40c1-8da2-76cbb963f0c9/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 5a35b365de7365eb1088366c2b8165f4a523d787 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 16:03:30,777 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 16:03:30,778 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 16:03:30,784 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 16:03:30,784 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 16:03:30,785 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 16:03:30,785 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 16:03:30,786 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 16:03:30,787 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 16:03:30,787 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 16:03:30,788 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 16:03:30,788 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 16:03:30,788 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 16:03:30,789 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 16:03:30,789 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 16:03:30,790 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 16:03:30,790 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 16:03:30,791 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 16:03:30,792 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 16:03:30,793 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 16:03:30,793 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 16:03:30,794 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 16:03:30,795 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 16:03:30,795 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 16:03:30,795 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 16:03:30,795 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 16:03:30,796 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 16:03:30,796 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 16:03:30,797 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 16:03:30,797 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 16:03:30,797 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 16:03:30,798 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 16:03:30,798 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 16:03:30,798 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 16:03:30,798 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 16:03:30,799 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 16:03:30,799 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_9f527784-1844-40c1-8da2-76cbb963f0c9/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-08 16:03:30,806 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 16:03:30,806 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 16:03:30,807 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 16:03:30,807 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 16:03:30,807 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-08 16:03:30,807 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-08 16:03:30,807 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-08 16:03:30,807 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-08 16:03:30,807 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-08 16:03:30,807 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-08 16:03:30,808 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-08 16:03:30,808 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-08 16:03:30,808 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-08 16:03:30,808 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 16:03:30,808 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 16:03:30,808 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 16:03:30,809 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 16:03:30,809 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 16:03:30,809 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 16:03:30,809 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 16:03:30,809 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 16:03:30,809 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 16:03:30,809 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 16:03:30,809 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 16:03:30,809 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 16:03:30,810 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 16:03:30,810 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 16:03:30,810 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 16:03:30,810 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 16:03:30,810 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 16:03:30,810 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 16:03:30,810 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 16:03:30,810 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-08 16:03:30,810 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 16:03:30,811 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-08 16:03:30,811 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-08 16:03:30,811 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_9f527784-1844-40c1-8da2-76cbb963f0c9/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 -> 5a35b365de7365eb1088366c2b8165f4a523d787 [2018-12-08 16:03:30,827 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 16:03:30,834 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 16:03:30,836 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 16:03:30,837 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 16:03:30,837 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 16:03:30,838 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_9f527784-1844-40c1-8da2-76cbb963f0c9/bin-2019/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product59_true-unreach-call_false-termination.cil.c [2018-12-08 16:03:30,872 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9f527784-1844-40c1-8da2-76cbb963f0c9/bin-2019/utaipan/data/daaeee82e/a56414e784ed400882497300bf24e14b/FLAG7329c9223 [2018-12-08 16:03:31,367 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 16:03:31,368 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_9f527784-1844-40c1-8da2-76cbb963f0c9/sv-benchmarks/c/product-lines/minepump_spec4_product59_true-unreach-call_false-termination.cil.c [2018-12-08 16:03:31,374 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9f527784-1844-40c1-8da2-76cbb963f0c9/bin-2019/utaipan/data/daaeee82e/a56414e784ed400882497300bf24e14b/FLAG7329c9223 [2018-12-08 16:03:31,382 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_9f527784-1844-40c1-8da2-76cbb963f0c9/bin-2019/utaipan/data/daaeee82e/a56414e784ed400882497300bf24e14b [2018-12-08 16:03:31,384 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 16:03:31,385 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 16:03:31,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 16:03:31,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 16:03:31,389 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 16:03:31,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 04:03:31" (1/1) ... [2018-12-08 16:03:31,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2648fef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:03:31, skipping insertion in model container [2018-12-08 16:03:31,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 04:03:31" (1/1) ... [2018-12-08 16:03:31,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 16:03:31,425 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 16:03:31,576 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 16:03:31,622 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 16:03:31,680 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 16:03:31,696 INFO L195 MainTranslator]: Completed translation [2018-12-08 16:03:31,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:03:31 WrapperNode [2018-12-08 16:03:31,697 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 16:03:31,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 16:03:31,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 16:03:31,697 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 16:03:31,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:03:31" (1/1) ... [2018-12-08 16:03:31,711 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:03:31" (1/1) ... [2018-12-08 16:03:31,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 16:03:31,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 16:03:31,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 16:03:31,717 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 16:03:31,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:03:31" (1/1) ... [2018-12-08 16:03:31,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:03:31" (1/1) ... [2018-12-08 16:03:31,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:03:31" (1/1) ... [2018-12-08 16:03:31,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:03:31" (1/1) ... [2018-12-08 16:03:31,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:03:31" (1/1) ... [2018-12-08 16:03:31,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:03:31" (1/1) ... [2018-12-08 16:03:31,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:03:31" (1/1) ... [2018-12-08 16:03:31,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 16:03:31,738 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 16:03:31,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 16:03:31,739 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 16:03:31,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:03:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f527784-1844-40c1-8da2-76cbb963f0c9/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 [2018-12-08 16:03:31,770 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2018-12-08 16:03:31,771 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2018-12-08 16:03:31,771 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2018-12-08 16:03:31,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2018-12-08 16:03:31,771 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 16:03:31,771 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 16:03:31,771 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2018-12-08 16:03:31,771 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2018-12-08 16:03:31,771 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2018-12-08 16:03:31,771 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2018-12-08 16:03:31,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-08 16:03:31,771 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2018-12-08 16:03:31,771 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2018-12-08 16:03:31,771 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2018-12-08 16:03:31,772 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2018-12-08 16:03:31,772 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2018-12-08 16:03:31,772 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2018-12-08 16:03:31,772 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2018-12-08 16:03:31,772 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2018-12-08 16:03:31,772 INFO L130 BoogieDeclarations]: Found specification of procedure test [2018-12-08 16:03:31,772 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2018-12-08 16:03:31,772 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2018-12-08 16:03:31,772 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2018-12-08 16:03:31,772 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2018-12-08 16:03:31,772 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2018-12-08 16:03:31,772 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2018-12-08 16:03:31,772 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2018-12-08 16:03:31,772 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2018-12-08 16:03:31,772 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2018-12-08 16:03:31,773 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2018-12-08 16:03:31,773 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2018-12-08 16:03:31,773 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2018-12-08 16:03:31,773 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2018-12-08 16:03:31,773 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2018-12-08 16:03:31,773 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2018-12-08 16:03:31,773 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2018-12-08 16:03:31,773 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2018-12-08 16:03:31,773 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2018-12-08 16:03:31,773 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2018-12-08 16:03:31,773 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2018-12-08 16:03:31,773 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2018-12-08 16:03:31,773 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2018-12-08 16:03:31,773 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2018-12-08 16:03:31,773 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2018-12-08 16:03:31,774 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2018-12-08 16:03:31,774 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2018-12-08 16:03:31,774 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2018-12-08 16:03:31,774 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2018-12-08 16:03:31,774 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2018-12-08 16:03:31,774 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2018-12-08 16:03:31,774 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2018-12-08 16:03:31,774 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2018-12-08 16:03:31,774 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2018-12-08 16:03:31,774 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2018-12-08 16:03:31,774 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2018-12-08 16:03:31,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2018-12-08 16:03:31,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 16:03:31,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 16:03:31,774 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2018-12-08 16:03:31,774 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2018-12-08 16:03:31,774 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2018-12-08 16:03:31,775 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2018-12-08 16:03:31,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 16:03:31,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 16:03:32,064 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 16:03:32,064 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-08 16:03:32,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 04:03:32 BoogieIcfgContainer [2018-12-08 16:03:32,064 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 16:03:32,065 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 16:03:32,065 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 16:03:32,067 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 16:03:32,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 04:03:31" (1/3) ... [2018-12-08 16:03:32,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fdafb3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 04:03:32, skipping insertion in model container [2018-12-08 16:03:32,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:03:31" (2/3) ... [2018-12-08 16:03:32,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fdafb3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 04:03:32, skipping insertion in model container [2018-12-08 16:03:32,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 04:03:32" (3/3) ... [2018-12-08 16:03:32,069 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product59_true-unreach-call_false-termination.cil.c [2018-12-08 16:03:32,075 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 16:03:32,080 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-08 16:03:32,089 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-08 16:03:32,107 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 16:03:32,108 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 16:03:32,108 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 16:03:32,108 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 16:03:32,108 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 16:03:32,108 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 16:03:32,108 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 16:03:32,108 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 16:03:32,120 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states. [2018-12-08 16:03:32,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-12-08 16:03:32,125 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:03:32,126 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 16:03:32,127 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:03:32,130 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:03:32,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1577511589, now seen corresponding path program 1 times [2018-12-08 16:03:32,132 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 16:03:32,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:03:32,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:03:32,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:03:32,159 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 16:03:32,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:03:32,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 16:03:32,266 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 16:03:32,267 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 16:03:32,267 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 16:03:32,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-08 16:03:32,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-08 16:03:32,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-08 16:03:32,279 INFO L87 Difference]: Start difference. First operand 162 states. Second operand 2 states. [2018-12-08 16:03:32,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:03:32,302 INFO L93 Difference]: Finished difference Result 298 states and 365 transitions. [2018-12-08 16:03:32,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-08 16:03:32,303 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2018-12-08 16:03:32,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:03:32,310 INFO L225 Difference]: With dead ends: 298 [2018-12-08 16:03:32,310 INFO L226 Difference]: Without dead ends: 149 [2018-12-08 16:03:32,312 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-08 16:03:32,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-12-08 16:03:32,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-12-08 16:03:32,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-12-08 16:03:32,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 174 transitions. [2018-12-08 16:03:32,342 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 174 transitions. Word has length 46 [2018-12-08 16:03:32,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:03:32,343 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 174 transitions. [2018-12-08 16:03:32,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-08 16:03:32,343 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 174 transitions. [2018-12-08 16:03:32,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-12-08 16:03:32,344 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:03:32,345 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 16:03:32,345 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:03:32,345 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:03:32,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1559707718, now seen corresponding path program 1 times [2018-12-08 16:03:32,345 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 16:03:32,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:03:32,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:03:32,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:03:32,346 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 16:03:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:03:32,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 16:03:32,399 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 16:03:32,399 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 16:03:32,399 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 16:03:32,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-08 16:03:32,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 16:03:32,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 16:03:32,400 INFO L87 Difference]: Start difference. First operand 149 states and 174 transitions. Second operand 3 states. [2018-12-08 16:03:32,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:03:32,414 INFO L93 Difference]: Finished difference Result 241 states and 279 transitions. [2018-12-08 16:03:32,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 16:03:32,414 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2018-12-08 16:03:32,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:03:32,415 INFO L225 Difference]: With dead ends: 241 [2018-12-08 16:03:32,416 INFO L226 Difference]: Without dead ends: 140 [2018-12-08 16:03:32,416 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 16:03:32,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-12-08 16:03:32,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2018-12-08 16:03:32,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-12-08 16:03:32,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 162 transitions. [2018-12-08 16:03:32,424 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 162 transitions. Word has length 47 [2018-12-08 16:03:32,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:03:32,424 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 162 transitions. [2018-12-08 16:03:32,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-08 16:03:32,424 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 162 transitions. [2018-12-08 16:03:32,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-12-08 16:03:32,425 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:03:32,425 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 16:03:32,425 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:03:32,426 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:03:32,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1919773205, now seen corresponding path program 1 times [2018-12-08 16:03:32,426 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 16:03:32,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:03:32,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:03:32,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:03:32,426 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 16:03:32,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:03:32,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 16:03:32,504 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 16:03:32,505 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-08 16:03:32,505 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 16:03:32,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-08 16:03:32,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-08 16:03:32,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-12-08 16:03:32,505 INFO L87 Difference]: Start difference. First operand 140 states and 162 transitions. Second operand 7 states. [2018-12-08 16:03:32,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:03:32,748 INFO L93 Difference]: Finished difference Result 422 states and 504 transitions. [2018-12-08 16:03:32,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-08 16:03:32,749 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2018-12-08 16:03:32,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:03:32,752 INFO L225 Difference]: With dead ends: 422 [2018-12-08 16:03:32,752 INFO L226 Difference]: Without dead ends: 306 [2018-12-08 16:03:32,753 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-12-08 16:03:32,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2018-12-08 16:03:32,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 298. [2018-12-08 16:03:32,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2018-12-08 16:03:32,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 356 transitions. [2018-12-08 16:03:32,782 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 356 transitions. Word has length 51 [2018-12-08 16:03:32,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:03:32,783 INFO L480 AbstractCegarLoop]: Abstraction has 298 states and 356 transitions. [2018-12-08 16:03:32,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-08 16:03:32,783 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 356 transitions. [2018-12-08 16:03:32,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-12-08 16:03:32,785 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:03:32,785 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 16:03:32,785 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:03:32,786 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:03:32,786 INFO L82 PathProgramCache]: Analyzing trace with hash 903237574, now seen corresponding path program 1 times [2018-12-08 16:03:32,786 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 16:03:32,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:03:32,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:03:32,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:03:32,787 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 16:03:32,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:03:32,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 16:03:32,880 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 16:03:32,880 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-12-08 16:03:32,880 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 16:03:32,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-08 16:03:32,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-08 16:03:32,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-12-08 16:03:32,881 INFO L87 Difference]: Start difference. First operand 298 states and 356 transitions. Second operand 10 states. [2018-12-08 16:03:33,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:03:33,262 INFO L93 Difference]: Finished difference Result 1072 states and 1372 transitions. [2018-12-08 16:03:33,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-12-08 16:03:33,262 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2018-12-08 16:03:33,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:03:33,267 INFO L225 Difference]: With dead ends: 1072 [2018-12-08 16:03:33,267 INFO L226 Difference]: Without dead ends: 798 [2018-12-08 16:03:33,269 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2018-12-08 16:03:33,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2018-12-08 16:03:33,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 786. [2018-12-08 16:03:33,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 786 states. [2018-12-08 16:03:33,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 972 transitions. [2018-12-08 16:03:33,315 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 972 transitions. Word has length 57 [2018-12-08 16:03:33,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:03:33,315 INFO L480 AbstractCegarLoop]: Abstraction has 786 states and 972 transitions. [2018-12-08 16:03:33,315 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-08 16:03:33,315 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 972 transitions. [2018-12-08 16:03:33,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-12-08 16:03:33,318 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:03:33,318 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 16:03:33,319 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:03:33,319 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:03:33,319 INFO L82 PathProgramCache]: Analyzing trace with hash -588764660, now seen corresponding path program 1 times [2018-12-08 16:03:33,319 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 16:03:33,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:03:33,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:03:33,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:03:33,320 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 16:03:33,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:03:33,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 16:03:33,372 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 16:03:33,372 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 16:03:33,372 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 16:03:33,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 16:03:33,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 16:03:33,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 16:03:33,373 INFO L87 Difference]: Start difference. First operand 786 states and 972 transitions. Second operand 4 states. [2018-12-08 16:03:33,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:03:33,584 INFO L93 Difference]: Finished difference Result 1938 states and 2607 transitions. [2018-12-08 16:03:33,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 16:03:33,585 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2018-12-08 16:03:33,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:03:33,590 INFO L225 Difference]: With dead ends: 1938 [2018-12-08 16:03:33,590 INFO L226 Difference]: Without dead ends: 1176 [2018-12-08 16:03:33,593 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-08 16:03:33,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2018-12-08 16:03:33,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1041. [2018-12-08 16:03:33,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1041 states. [2018-12-08 16:03:33,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1298 transitions. [2018-12-08 16:03:33,647 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1298 transitions. Word has length 61 [2018-12-08 16:03:33,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:03:33,648 INFO L480 AbstractCegarLoop]: Abstraction has 1041 states and 1298 transitions. [2018-12-08 16:03:33,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 16:03:33,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1298 transitions. [2018-12-08 16:03:33,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-12-08 16:03:33,649 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:03:33,650 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 16:03:33,650 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:03:33,650 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:03:33,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1174479952, now seen corresponding path program 1 times [2018-12-08 16:03:33,650 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 16:03:33,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:03:33,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:03:33,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:03:33,651 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 16:03:33,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:03:33,723 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-12-08 16:03:33,723 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 16:03:33,723 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-08 16:03:33,724 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 89 with the following transitions: [2018-12-08 16:03:33,726 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [42], [44], [45], [46], [47], [59], [94], [103], [107], [111], [114], [119], [125], [127], [130], [132], [135], [150], [151], [174], [175], [216], [223], [226], [234], [259], [263], [264], [267], [268], [269], [270], [271], [273], [274], [275], [276], [277], [278], [279], [280], [281], [287], [299], [300], [303], [304], [305], [306], [323], [324], [325], [326], [327] [2018-12-08 16:03:33,751 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-08 16:03:33,751 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-08 16:03:34,203 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-08 16:03:34,204 INFO L272 AbstractInterpreter]: Visited 65 different actions 139 times. Merged at 13 different actions 19 times. Never widened. Performed 4981 root evaluator evaluations with a maximum evaluation depth of 3. Performed 4981 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 2 fixpoints after 2 different actions. Largest state had 133 variables. [2018-12-08 16:03:34,209 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:03:34,209 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-08 16:03:34,383 INFO L227 lantSequenceWeakener]: Weakened 84 states. On average, predicates are now at 98.37% of their original sizes. [2018-12-08 16:03:34,383 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-08 16:03:34,432 INFO L418 sIntCurrentIteration]: We unified 87 AI predicates to 87 [2018-12-08 16:03:34,432 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-08 16:03:34,433 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-08 16:03:34,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [7] total 16 [2018-12-08 16:03:34,433 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 16:03:34,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-08 16:03:34,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-08 16:03:34,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-12-08 16:03:34,434 INFO L87 Difference]: Start difference. First operand 1041 states and 1298 transitions. Second operand 11 states. [2018-12-08 16:03:35,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:03:35,858 INFO L93 Difference]: Finished difference Result 1429 states and 1813 transitions. [2018-12-08 16:03:35,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-12-08 16:03:35,858 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 88 [2018-12-08 16:03:35,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:03:35,860 INFO L225 Difference]: With dead ends: 1429 [2018-12-08 16:03:35,860 INFO L226 Difference]: Without dead ends: 642 [2018-12-08 16:03:35,862 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 97 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2018-12-08 16:03:35,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2018-12-08 16:03:35,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 608. [2018-12-08 16:03:35,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2018-12-08 16:03:35,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 737 transitions. [2018-12-08 16:03:35,883 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 737 transitions. Word has length 88 [2018-12-08 16:03:35,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:03:35,883 INFO L480 AbstractCegarLoop]: Abstraction has 608 states and 737 transitions. [2018-12-08 16:03:35,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-08 16:03:35,883 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 737 transitions. [2018-12-08 16:03:35,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-12-08 16:03:35,885 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:03:35,885 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-12-08 16:03:35,885 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:03:35,886 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:03:35,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1324421955, now seen corresponding path program 1 times [2018-12-08 16:03:35,886 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 16:03:35,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:03:35,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:03:35,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:03:35,886 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 16:03:35,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:03:35,935 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 17 proven. 10 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-12-08 16:03:35,935 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 16:03:35,935 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-08 16:03:35,935 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 169 with the following transitions: [2018-12-08 16:03:35,935 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [46], [47], [59], [62], [64], [65], [68], [71], [73], [74], [89], [92], [94], [103], [107], [111], [114], [119], [125], [127], [130], [146], [147], [150], [151], [152], [154], [159], [162], [163], [165], [168], [172], [173], [174], [175], [183], [184], [216], [220], [226], [234], [238], [241], [243], [246], [256], [259], [263], [264], [267], [268], [269], [270], [271], [273], [274], [275], [276], [277], [278], [279], [280], [281], [287], [289], [290], [297], [298], [299], [300], [305], [306], [309], [310], [311], [312], [313], [314], [321], [322], [323], [324], [325], [326], [327], [329], [330], [331], [332] [2018-12-08 16:03:35,937 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-08 16:03:35,937 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-08 16:03:36,018 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-08 16:03:36,018 INFO L272 AbstractInterpreter]: Visited 50 different actions 50 times. Never merged. Never widened. Performed 2047 root evaluator evaluations with a maximum evaluation depth of 3. Performed 2047 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 132 variables. [2018-12-08 16:03:36,019 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:03:36,019 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-08 16:03:36,122 INFO L227 lantSequenceWeakener]: Weakened 74 states. On average, predicates are now at 96.59% of their original sizes. [2018-12-08 16:03:36,122 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-08 16:03:36,150 INFO L418 sIntCurrentIteration]: We unified 167 AI predicates to 167 [2018-12-08 16:03:36,150 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-08 16:03:36,150 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-08 16:03:36,150 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2018-12-08 16:03:36,150 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 16:03:36,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-08 16:03:36,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-08 16:03:36,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-12-08 16:03:36,151 INFO L87 Difference]: Start difference. First operand 608 states and 737 transitions. Second operand 9 states. [2018-12-08 16:03:36,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:03:36,862 INFO L93 Difference]: Finished difference Result 1401 states and 1743 transitions. [2018-12-08 16:03:36,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-08 16:03:36,863 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2018-12-08 16:03:36,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:03:36,865 INFO L225 Difference]: With dead ends: 1401 [2018-12-08 16:03:36,865 INFO L226 Difference]: Without dead ends: 817 [2018-12-08 16:03:36,866 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 167 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-12-08 16:03:36,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2018-12-08 16:03:36,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 789. [2018-12-08 16:03:36,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2018-12-08 16:03:36,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 950 transitions. [2018-12-08 16:03:36,889 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 950 transitions. Word has length 168 [2018-12-08 16:03:36,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:03:36,890 INFO L480 AbstractCegarLoop]: Abstraction has 789 states and 950 transitions. [2018-12-08 16:03:36,890 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-08 16:03:36,890 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 950 transitions. [2018-12-08 16:03:36,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-12-08 16:03:36,891 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:03:36,892 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 16:03:36,892 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:03:36,892 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:03:36,892 INFO L82 PathProgramCache]: Analyzing trace with hash -2052698540, now seen corresponding path program 1 times [2018-12-08 16:03:36,892 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 16:03:36,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:03:36,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:03:36,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:03:36,893 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 16:03:36,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:03:36,964 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-12-08 16:03:36,964 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 16:03:36,964 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-08 16:03:36,964 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 152 with the following transitions: [2018-12-08 16:03:36,964 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [46], [47], [48], [50], [53], [57], [58], [59], [62], [64], [65], [68], [71], [73], [74], [77], [79], [85], [89], [92], [93], [94], [103], [107], [111], [117], [119], [122], [125], [127], [130], [146], [147], [148], [149], [150], [151], [152], [154], [159], [162], [163], [165], [168], [172], [173], [174], [175], [180], [182], [183], [184], [213], [216], [220], [226], [229], [233], [234], [238], [241], [243], [246], [253], [256], [264], [267], [268], [269], [270], [271], [273], [274], [275], [276], [277], [278], [279], [280], [281], [285], [286], [287], [289], [290], [291], [292], [295], [296], [297], [298], [301], [302], [305], [306], [309], [310], [311], [312], [313], [314], [319], [320], [321], [322], [323], [324], [325], [326], [327], [329], [330], [331], [332], [335], [336] [2018-12-08 16:03:36,967 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-08 16:03:36,968 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-08 16:03:37,141 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-08 16:03:37,142 INFO L272 AbstractInterpreter]: Visited 63 different actions 91 times. Merged at 3 different actions 3 times. Never widened. Performed 4650 root evaluator evaluations with a maximum evaluation depth of 3. Performed 4650 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 132 variables. [2018-12-08 16:03:37,143 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:03:37,143 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-08 16:03:37,262 INFO L227 lantSequenceWeakener]: Weakened 71 states. On average, predicates are now at 96.61% of their original sizes. [2018-12-08 16:03:37,262 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-08 16:03:37,386 INFO L418 sIntCurrentIteration]: We unified 150 AI predicates to 150 [2018-12-08 16:03:37,386 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-08 16:03:37,387 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-08 16:03:37,387 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-12-08 16:03:37,387 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 16:03:37,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-12-08 16:03:37,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-12-08 16:03:37,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2018-12-08 16:03:37,388 INFO L87 Difference]: Start difference. First operand 789 states and 950 transitions. Second operand 18 states. [2018-12-08 16:03:38,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:03:38,954 INFO L93 Difference]: Finished difference Result 1468 states and 1789 transitions. [2018-12-08 16:03:38,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-12-08 16:03:38,954 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 151 [2018-12-08 16:03:38,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:03:38,956 INFO L225 Difference]: With dead ends: 1468 [2018-12-08 16:03:38,956 INFO L226 Difference]: Without dead ends: 703 [2018-12-08 16:03:38,957 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 165 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=199, Invalid=857, Unknown=0, NotChecked=0, Total=1056 [2018-12-08 16:03:38,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2018-12-08 16:03:38,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 699. [2018-12-08 16:03:38,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2018-12-08 16:03:38,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 826 transitions. [2018-12-08 16:03:38,977 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 826 transitions. Word has length 151 [2018-12-08 16:03:38,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:03:38,977 INFO L480 AbstractCegarLoop]: Abstraction has 699 states and 826 transitions. [2018-12-08 16:03:38,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-12-08 16:03:38,977 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 826 transitions. [2018-12-08 16:03:38,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-12-08 16:03:38,979 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:03:38,980 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 16:03:38,980 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:03:38,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:03:38,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1664956000, now seen corresponding path program 1 times [2018-12-08 16:03:38,980 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 16:03:38,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:03:38,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:03:38,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:03:38,981 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 16:03:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:03:39,037 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-12-08 16:03:39,038 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 16:03:39,038 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-08 16:03:39,038 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 160 with the following transitions: [2018-12-08 16:03:39,038 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [46], [47], [48], [50], [53], [57], [58], [59], [62], [64], [65], [68], [71], [73], [74], [77], [79], [85], [89], [92], [93], [94], [103], [107], [111], [114], [119], [122], [125], [127], [130], [146], [147], [148], [149], [150], [151], [152], [154], [159], [162], [163], [165], [168], [172], [173], [174], [175], [180], [182], [183], [184], [213], [216], [220], [226], [229], [233], [234], [238], [241], [243], [246], [253], [256], [259], [263], [264], [267], [268], [269], [270], [271], [273], [274], [275], [276], [277], [278], [279], [280], [281], [285], [286], [287], [289], [290], [291], [292], [295], [296], [297], [298], [299], [300], [301], [302], [305], [306], [309], [310], [311], [312], [313], [314], [319], [320], [321], [322], [323], [324], [325], [326], [327], [329], [330], [331], [332], [335], [336] [2018-12-08 16:03:39,040 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-08 16:03:39,040 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-08 16:03:39,181 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-08 16:03:39,181 INFO L272 AbstractInterpreter]: Visited 58 different actions 77 times. Merged at 3 different actions 3 times. Never widened. Performed 4700 root evaluator evaluations with a maximum evaluation depth of 3. Performed 4700 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 132 variables. [2018-12-08 16:03:39,183 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:03:39,183 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-08 16:03:39,298 INFO L227 lantSequenceWeakener]: Weakened 70 states. On average, predicates are now at 96.64% of their original sizes. [2018-12-08 16:03:39,299 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-08 16:03:39,356 INFO L418 sIntCurrentIteration]: We unified 158 AI predicates to 158 [2018-12-08 16:03:39,356 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-08 16:03:39,356 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-08 16:03:39,356 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [6] total 18 [2018-12-08 16:03:39,356 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 16:03:39,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-08 16:03:39,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-08 16:03:39,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2018-12-08 16:03:39,357 INFO L87 Difference]: Start difference. First operand 699 states and 826 transitions. Second operand 14 states. [2018-12-08 16:03:41,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:03:41,034 INFO L93 Difference]: Finished difference Result 1549 states and 1935 transitions. [2018-12-08 16:03:41,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-08 16:03:41,034 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 159 [2018-12-08 16:03:41,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:03:41,039 INFO L225 Difference]: With dead ends: 1549 [2018-12-08 16:03:41,039 INFO L226 Difference]: Without dead ends: 1152 [2018-12-08 16:03:41,040 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 159 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2018-12-08 16:03:41,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2018-12-08 16:03:41,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 1100. [2018-12-08 16:03:41,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1100 states. [2018-12-08 16:03:41,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1289 transitions. [2018-12-08 16:03:41,088 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1289 transitions. Word has length 159 [2018-12-08 16:03:41,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:03:41,089 INFO L480 AbstractCegarLoop]: Abstraction has 1100 states and 1289 transitions. [2018-12-08 16:03:41,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-08 16:03:41,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1289 transitions. [2018-12-08 16:03:41,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-12-08 16:03:41,090 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:03:41,090 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 16:03:41,091 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:03:41,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:03:41,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1192383381, now seen corresponding path program 1 times [2018-12-08 16:03:41,091 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 16:03:41,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:03:41,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:03:41,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:03:41,091 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 16:03:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:03:41,130 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-12-08 16:03:41,130 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 16:03:41,130 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-08 16:03:41,130 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 152 with the following transitions: [2018-12-08 16:03:41,131 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [46], [47], [48], [50], [53], [57], [58], [59], [62], [64], [65], [68], [72], [73], [74], [77], [79], [85], [89], [92], [93], [94], [103], [107], [111], [114], [117], [119], [125], [127], [130], [146], [147], [148], [149], [150], [151], [152], [154], [159], [162], [163], [165], [168], [172], [173], [174], [175], [183], [184], [213], [216], [220], [226], [229], [233], [234], [238], [241], [243], [246], [253], [256], [259], [263], [264], [267], [268], [269], [270], [271], [273], [274], [275], [276], [277], [278], [279], [280], [281], [285], [286], [287], [289], [290], [291], [292], [295], [296], [297], [298], [299], [300], [305], [306], [309], [310], [311], [312], [313], [314], [319], [320], [321], [322], [323], [324], [325], [326], [327], [329], [330], [331], [332], [335], [336] [2018-12-08 16:03:41,132 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-08 16:03:41,132 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-08 16:03:41,277 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-08 16:03:41,277 INFO L272 AbstractInterpreter]: Visited 63 different actions 84 times. Merged at 5 different actions 5 times. Never widened. Performed 4639 root evaluator evaluations with a maximum evaluation depth of 3. Performed 4639 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 132 variables. [2018-12-08 16:03:41,278 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:03:41,278 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-08 16:03:41,430 INFO L227 lantSequenceWeakener]: Weakened 71 states. On average, predicates are now at 96.66% of their original sizes. [2018-12-08 16:03:41,431 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-08 16:03:41,499 INFO L418 sIntCurrentIteration]: We unified 150 AI predicates to 150 [2018-12-08 16:03:41,499 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-08 16:03:41,499 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-08 16:03:41,500 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [5] total 20 [2018-12-08 16:03:41,500 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 16:03:41,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-12-08 16:03:41,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-12-08 16:03:41,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2018-12-08 16:03:41,500 INFO L87 Difference]: Start difference. First operand 1100 states and 1289 transitions. Second operand 17 states. [2018-12-08 16:03:43,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:03:43,473 INFO L93 Difference]: Finished difference Result 3171 states and 4065 transitions. [2018-12-08 16:03:43,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-12-08 16:03:43,473 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 151 [2018-12-08 16:03:43,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:03:43,479 INFO L225 Difference]: With dead ends: 3171 [2018-12-08 16:03:43,479 INFO L226 Difference]: Without dead ends: 2332 [2018-12-08 16:03:43,481 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 155 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2018-12-08 16:03:43,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2332 states. [2018-12-08 16:03:43,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2332 to 1990. [2018-12-08 16:03:43,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1990 states. [2018-12-08 16:03:43,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1990 states to 1990 states and 2410 transitions. [2018-12-08 16:03:43,550 INFO L78 Accepts]: Start accepts. Automaton has 1990 states and 2410 transitions. Word has length 151 [2018-12-08 16:03:43,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:03:43,550 INFO L480 AbstractCegarLoop]: Abstraction has 1990 states and 2410 transitions. [2018-12-08 16:03:43,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-12-08 16:03:43,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1990 states and 2410 transitions. [2018-12-08 16:03:43,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-12-08 16:03:43,552 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:03:43,553 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 16:03:43,553 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:03:43,553 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:03:43,553 INFO L82 PathProgramCache]: Analyzing trace with hash -714019885, now seen corresponding path program 1 times [2018-12-08 16:03:43,553 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 16:03:43,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:03:43,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:03:43,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:03:43,554 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 16:03:43,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:03:43,651 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-12-08 16:03:43,652 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 16:03:43,652 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-08 16:03:43,652 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 152 with the following transitions: [2018-12-08 16:03:43,652 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [46], [47], [48], [50], [53], [57], [58], [59], [62], [64], [65], [68], [72], [73], [74], [77], [79], [85], [89], [92], [93], [94], [103], [107], [111], [114], [117], [119], [125], [127], [130], [146], [147], [148], [149], [150], [151], [152], [154], [159], [162], [163], [165], [170], [172], [173], [174], [175], [183], [184], [213], [216], [220], [226], [229], [233], [234], [238], [241], [243], [246], [253], [256], [259], [263], [264], [267], [268], [269], [270], [271], [273], [274], [275], [276], [277], [278], [279], [280], [281], [285], [286], [287], [289], [290], [291], [292], [295], [296], [297], [298], [299], [300], [305], [306], [309], [310], [311], [312], [313], [314], [319], [320], [321], [322], [323], [324], [325], [326], [327], [329], [330], [331], [332], [335], [336] [2018-12-08 16:03:43,654 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-08 16:03:43,654 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-08 16:03:44,158 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-08 16:03:44,158 INFO L272 AbstractInterpreter]: Visited 119 different actions 290 times. Merged at 16 different actions 20 times. Never widened. Performed 15179 root evaluator evaluations with a maximum evaluation depth of 5. Performed 15179 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 3 fixpoints after 2 different actions. Largest state had 132 variables. [2018-12-08 16:03:44,160 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:03:44,161 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-08 16:03:44,161 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 16:03:44,161 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f527784-1844-40c1-8da2-76cbb963f0c9/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 [2018-12-08 16:03:44,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:03:44,167 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-08 16:03:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:03:44,242 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 16:03:44,331 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 16:03:44,331 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-08 16:03:44,531 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 18 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-12-08 16:03:44,547 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-08 16:03:44,547 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 17 [2018-12-08 16:03:44,547 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-08 16:03:44,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-08 16:03:44,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-08 16:03:44,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2018-12-08 16:03:44,548 INFO L87 Difference]: Start difference. First operand 1990 states and 2410 transitions. Second operand 14 states. [2018-12-08 16:03:45,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:03:45,815 INFO L93 Difference]: Finished difference Result 3444 states and 4653 transitions. [2018-12-08 16:03:45,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-12-08 16:03:45,816 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 151 [2018-12-08 16:03:45,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:03:45,823 INFO L225 Difference]: With dead ends: 3444 [2018-12-08 16:03:45,823 INFO L226 Difference]: Without dead ends: 2192 [2018-12-08 16:03:45,827 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 297 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=265, Invalid=995, Unknown=0, NotChecked=0, Total=1260 [2018-12-08 16:03:45,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2192 states. [2018-12-08 16:03:45,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2192 to 1854. [2018-12-08 16:03:45,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1854 states. [2018-12-08 16:03:45,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1854 states to 1854 states and 2222 transitions. [2018-12-08 16:03:45,906 INFO L78 Accepts]: Start accepts. Automaton has 1854 states and 2222 transitions. Word has length 151 [2018-12-08 16:03:45,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:03:45,906 INFO L480 AbstractCegarLoop]: Abstraction has 1854 states and 2222 transitions. [2018-12-08 16:03:45,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-08 16:03:45,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1854 states and 2222 transitions. [2018-12-08 16:03:45,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-12-08 16:03:45,909 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:03:45,910 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 16:03:45,910 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:03:45,910 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:03:45,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1128528145, now seen corresponding path program 1 times [2018-12-08 16:03:45,910 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 16:03:45,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:03:45,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:03:45,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:03:45,911 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 16:03:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:03:45,960 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 34 proven. 11 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-12-08 16:03:45,961 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 16:03:45,961 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-08 16:03:45,961 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 209 with the following transitions: [2018-12-08 16:03:45,961 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [46], [47], [48], [50], [53], [55], [57], [58], [59], [62], [64], [65], [68], [72], [73], [74], [77], [79], [85], [89], [92], [93], [94], [103], [107], [111], [114], [117], [119], [122], [125], [127], [130], [146], [147], [148], [149], [150], [151], [152], [154], [159], [162], [163], [165], [168], [172], [173], [174], [175], [180], [182], [183], [184], [213], [216], [220], [226], [229], [233], [234], [238], [241], [243], [246], [253], [256], [259], [263], [264], [267], [268], [269], [270], [271], [273], [274], [275], [276], [277], [278], [279], [280], [281], [285], [286], [287], [289], [290], [291], [292], [295], [296], [297], [298], [299], [300], [301], [302], [305], [306], [309], [310], [311], [312], [313], [314], [319], [320], [321], [322], [323], [324], [325], [326], [327], [329], [330], [331], [332], [335], [336] [2018-12-08 16:03:45,962 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-08 16:03:45,962 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-08 16:03:46,144 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-08 16:03:46,144 INFO L272 AbstractInterpreter]: Visited 68 different actions 122 times. Merged at 7 different actions 9 times. Never widened. Performed 5949 root evaluator evaluations with a maximum evaluation depth of 3. Performed 5949 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 132 variables. [2018-12-08 16:03:46,146 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:03:46,146 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-08 16:03:46,254 INFO L227 lantSequenceWeakener]: Weakened 89 states. On average, predicates are now at 96.91% of their original sizes. [2018-12-08 16:03:46,254 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-08 16:03:46,349 INFO L418 sIntCurrentIteration]: We unified 207 AI predicates to 207 [2018-12-08 16:03:46,349 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-08 16:03:46,349 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-08 16:03:46,350 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [5] total 23 [2018-12-08 16:03:46,350 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 16:03:46,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-12-08 16:03:46,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-12-08 16:03:46,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2018-12-08 16:03:46,350 INFO L87 Difference]: Start difference. First operand 1854 states and 2222 transitions. Second operand 20 states. [2018-12-08 16:03:49,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:03:49,337 INFO L93 Difference]: Finished difference Result 3916 states and 4753 transitions. [2018-12-08 16:03:49,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-12-08 16:03:49,337 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 208 [2018-12-08 16:03:49,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:03:49,341 INFO L225 Difference]: With dead ends: 3916 [2018-12-08 16:03:49,341 INFO L226 Difference]: Without dead ends: 2204 [2018-12-08 16:03:49,344 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 231 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=350, Invalid=1542, Unknown=0, NotChecked=0, Total=1892 [2018-12-08 16:03:49,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2204 states. [2018-12-08 16:03:49,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2204 to 1997. [2018-12-08 16:03:49,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1997 states. [2018-12-08 16:03:49,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1997 states to 1997 states and 2380 transitions. [2018-12-08 16:03:49,417 INFO L78 Accepts]: Start accepts. Automaton has 1997 states and 2380 transitions. Word has length 208 [2018-12-08 16:03:49,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:03:49,418 INFO L480 AbstractCegarLoop]: Abstraction has 1997 states and 2380 transitions. [2018-12-08 16:03:49,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-12-08 16:03:49,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1997 states and 2380 transitions. [2018-12-08 16:03:49,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-12-08 16:03:49,421 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:03:49,421 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 16:03:49,421 INFO L423 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:03:49,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:03:49,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1719858285, now seen corresponding path program 1 times [2018-12-08 16:03:49,422 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 16:03:49,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:03:49,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:03:49,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:03:49,422 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 16:03:49,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:03:49,514 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 35 proven. 11 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-12-08 16:03:49,514 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 16:03:49,514 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-08 16:03:49,514 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 209 with the following transitions: [2018-12-08 16:03:49,514 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [46], [47], [48], [50], [53], [55], [57], [58], [59], [62], [64], [65], [68], [72], [73], [74], [77], [79], [85], [89], [92], [93], [94], [103], [107], [111], [114], [117], [119], [122], [125], [127], [130], [146], [147], [148], [149], [150], [151], [152], [154], [159], [162], [163], [165], [170], [172], [173], [174], [175], [180], [182], [183], [184], [213], [216], [220], [226], [229], [233], [234], [238], [241], [243], [246], [253], [256], [259], [263], [264], [267], [268], [269], [270], [271], [273], [274], [275], [276], [277], [278], [279], [280], [281], [285], [286], [287], [289], [290], [291], [292], [295], [296], [297], [298], [299], [300], [301], [302], [305], [306], [309], [310], [311], [312], [313], [314], [319], [320], [321], [322], [323], [324], [325], [326], [327], [329], [330], [331], [332], [335], [336] [2018-12-08 16:03:49,515 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-08 16:03:49,515 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-08 16:03:50,574 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-08 16:03:50,574 INFO L272 AbstractInterpreter]: Visited 135 different actions 1015 times. Merged at 20 different actions 86 times. Never widened. Performed 33381 root evaluator evaluations with a maximum evaluation depth of 5. Performed 33381 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 25 fixpoints after 6 different actions. Largest state had 132 variables. [2018-12-08 16:03:50,576 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:03:50,576 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-08 16:03:50,576 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 16:03:50,576 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f527784-1844-40c1-8da2-76cbb963f0c9/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 [2018-12-08 16:03:50,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:03:50,582 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-08 16:03:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:03:50,648 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 16:03:50,722 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-12-08 16:03:50,722 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-08 16:03:51,271 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 35 proven. 11 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-12-08 16:03:51,286 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-12-08 16:03:51,286 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [13, 9] total 25 [2018-12-08 16:03:51,286 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 16:03:51,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-08 16:03:51,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-08 16:03:51,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2018-12-08 16:03:51,287 INFO L87 Difference]: Start difference. First operand 1997 states and 2380 transitions. Second operand 8 states. [2018-12-08 16:03:51,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:03:51,517 INFO L93 Difference]: Finished difference Result 4025 states and 4927 transitions. [2018-12-08 16:03:51,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-08 16:03:51,517 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 208 [2018-12-08 16:03:51,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:03:51,521 INFO L225 Difference]: With dead ends: 4025 [2018-12-08 16:03:51,521 INFO L226 Difference]: Without dead ends: 2517 [2018-12-08 16:03:51,523 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 398 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2018-12-08 16:03:51,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2517 states. [2018-12-08 16:03:51,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2517 to 2437. [2018-12-08 16:03:51,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2437 states. [2018-12-08 16:03:51,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2437 states to 2437 states and 2892 transitions. [2018-12-08 16:03:51,605 INFO L78 Accepts]: Start accepts. Automaton has 2437 states and 2892 transitions. Word has length 208 [2018-12-08 16:03:51,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:03:51,605 INFO L480 AbstractCegarLoop]: Abstraction has 2437 states and 2892 transitions. [2018-12-08 16:03:51,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-08 16:03:51,605 INFO L276 IsEmpty]: Start isEmpty. Operand 2437 states and 2892 transitions. [2018-12-08 16:03:51,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-12-08 16:03:51,608 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:03:51,608 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 16:03:51,608 INFO L423 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:03:51,609 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:03:51,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1781892361, now seen corresponding path program 1 times [2018-12-08 16:03:51,609 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 16:03:51,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:03:51,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:03:51,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:03:51,609 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 16:03:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:03:51,664 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 8 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-12-08 16:03:51,664 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 16:03:51,664 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-08 16:03:51,664 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 205 with the following transitions: [2018-12-08 16:03:51,664 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [46], [47], [48], [50], [53], [55], [57], [58], [59], [62], [64], [65], [68], [72], [73], [74], [77], [79], [85], [89], [92], [93], [94], [103], [107], [111], [114], [117], [119], [125], [127], [130], [146], [147], [148], [149], [150], [151], [152], [154], [159], [162], [163], [165], [170], [172], [173], [174], [175], [183], [184], [213], [216], [220], [226], [229], [233], [234], [238], [241], [243], [246], [253], [256], [259], [263], [264], [267], [268], [269], [270], [271], [273], [274], [275], [276], [277], [278], [279], [280], [281], [285], [286], [287], [289], [290], [291], [292], [295], [296], [297], [298], [299], [300], [305], [306], [309], [310], [311], [312], [313], [314], [319], [320], [321], [322], [323], [324], [325], [326], [327], [329], [330], [331], [332], [335], [336] [2018-12-08 16:03:51,665 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-08 16:03:51,665 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-08 16:03:52,263 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-08 16:03:52,263 INFO L272 AbstractInterpreter]: Visited 130 different actions 602 times. Merged at 18 different actions 51 times. Never widened. Performed 18685 root evaluator evaluations with a maximum evaluation depth of 5. Performed 18685 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 12 fixpoints after 4 different actions. Largest state had 132 variables. [2018-12-08 16:03:52,264 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:03:52,264 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-08 16:03:52,264 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 16:03:52,264 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f527784-1844-40c1-8da2-76cbb963f0c9/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 [2018-12-08 16:03:52,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:03:52,270 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-08 16:03:52,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:03:52,332 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 16:03:52,378 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-12-08 16:03:52,378 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-08 16:03:52,521 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 8 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-12-08 16:03:52,537 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-12-08 16:03:52,537 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [9, 6] total 13 [2018-12-08 16:03:52,537 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 16:03:52,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-08 16:03:52,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-08 16:03:52,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2018-12-08 16:03:52,538 INFO L87 Difference]: Start difference. First operand 2437 states and 2892 transitions. Second operand 6 states. [2018-12-08 16:03:52,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:03:52,620 INFO L93 Difference]: Finished difference Result 4014 states and 4884 transitions. [2018-12-08 16:03:52,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-08 16:03:52,620 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 204 [2018-12-08 16:03:52,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:03:52,625 INFO L225 Difference]: With dead ends: 4014 [2018-12-08 16:03:52,625 INFO L226 Difference]: Without dead ends: 2349 [2018-12-08 16:03:52,627 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 403 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2018-12-08 16:03:52,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2349 states. [2018-12-08 16:03:52,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2349 to 2349. [2018-12-08 16:03:52,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2349 states. [2018-12-08 16:03:52,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2349 states to 2349 states and 2766 transitions. [2018-12-08 16:03:52,738 INFO L78 Accepts]: Start accepts. Automaton has 2349 states and 2766 transitions. Word has length 204 [2018-12-08 16:03:52,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:03:52,738 INFO L480 AbstractCegarLoop]: Abstraction has 2349 states and 2766 transitions. [2018-12-08 16:03:52,738 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-08 16:03:52,739 INFO L276 IsEmpty]: Start isEmpty. Operand 2349 states and 2766 transitions. [2018-12-08 16:03:52,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-12-08 16:03:52,741 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:03:52,742 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-12-08 16:03:52,742 INFO L423 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:03:52,742 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:03:52,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1448762654, now seen corresponding path program 1 times [2018-12-08 16:03:52,742 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 16:03:52,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:03:52,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:03:52,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:03:52,743 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 16:03:52,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:03:52,813 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 50 proven. 19 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-12-08 16:03:52,813 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 16:03:52,813 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-08 16:03:52,813 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 222 with the following transitions: [2018-12-08 16:03:52,813 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [46], [47], [48], [50], [53], [57], [58], [59], [62], [64], [65], [68], [71], [72], [73], [74], [77], [79], [85], [89], [92], [93], [94], [103], [107], [111], [114], [117], [119], [125], [127], [130], [146], [147], [148], [149], [150], [151], [152], [154], [159], [162], [163], [165], [168], [170], [172], [173], [174], [175], [183], [184], [213], [216], [220], [226], [229], [233], [234], [238], [241], [243], [246], [253], [256], [259], [263], [264], [267], [268], [269], [270], [271], [273], [274], [275], [276], [277], [278], [279], [280], [281], [285], [286], [287], [289], [290], [291], [292], [295], [296], [297], [298], [299], [300], [305], [306], [309], [310], [311], [312], [313], [314], [319], [320], [321], [322], [323], [324], [325], [326], [327], [329], [330], [331], [332], [335], [336] [2018-12-08 16:03:52,814 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-08 16:03:52,815 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-08 16:03:53,481 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-08 16:03:53,481 INFO L272 AbstractInterpreter]: Visited 131 different actions 708 times. Merged at 25 different actions 128 times. Never widened. Performed 18756 root evaluator evaluations with a maximum evaluation depth of 5. Performed 18756 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 15 fixpoints after 4 different actions. Largest state had 132 variables. [2018-12-08 16:03:53,482 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:03:53,482 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-08 16:03:53,482 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 16:03:53,482 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f527784-1844-40c1-8da2-76cbb963f0c9/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 [2018-12-08 16:03:53,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:03:53,489 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-08 16:03:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:03:53,554 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 16:03:53,610 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 75 proven. 20 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-12-08 16:03:53,610 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-08 16:03:53,790 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 50 proven. 19 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-12-08 16:03:53,805 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-08 16:03:53,805 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2018-12-08 16:03:53,806 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-08 16:03:53,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-08 16:03:53,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-08 16:03:53,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2018-12-08 16:03:53,806 INFO L87 Difference]: Start difference. First operand 2349 states and 2766 transitions. Second operand 12 states. [2018-12-08 16:03:54,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:03:54,216 INFO L93 Difference]: Finished difference Result 4377 states and 5240 transitions. [2018-12-08 16:03:54,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-08 16:03:54,217 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 221 [2018-12-08 16:03:54,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:03:54,223 INFO L225 Difference]: With dead ends: 4377 [2018-12-08 16:03:54,223 INFO L226 Difference]: Without dead ends: 2170 [2018-12-08 16:03:54,227 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 442 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-12-08 16:03:54,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2170 states. [2018-12-08 16:03:54,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2170 to 2009. [2018-12-08 16:03:54,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2009 states. [2018-12-08 16:03:54,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 2277 transitions. [2018-12-08 16:03:54,310 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 2277 transitions. Word has length 221 [2018-12-08 16:03:54,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:03:54,311 INFO L480 AbstractCegarLoop]: Abstraction has 2009 states and 2277 transitions. [2018-12-08 16:03:54,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-08 16:03:54,311 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 2277 transitions. [2018-12-08 16:03:54,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-12-08 16:03:54,314 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:03:54,314 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 16:03:54,314 INFO L423 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:03:54,314 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:03:54,315 INFO L82 PathProgramCache]: Analyzing trace with hash -489025161, now seen corresponding path program 1 times [2018-12-08 16:03:54,315 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 16:03:54,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:03:54,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:03:54,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:03:54,316 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 16:03:54,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:03:54,387 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 69 proven. 4 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2018-12-08 16:03:54,387 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 16:03:54,388 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-08 16:03:54,388 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 267 with the following transitions: [2018-12-08 16:03:54,388 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [46], [47], [48], [50], [53], [55], [57], [58], [59], [62], [64], [65], [66], [67], [68], [71], [72], [73], [74], [77], [79], [82], [85], [89], [92], [93], [94], [103], [107], [111], [114], [117], [119], [125], [127], [130], [146], [147], [148], [149], [150], [151], [152], [154], [159], [162], [163], [165], [168], [170], [172], [173], [174], [175], [183], [184], [213], [216], [220], [226], [229], [233], [234], [238], [241], [243], [246], [253], [256], [259], [263], [264], [267], [268], [269], [270], [271], [273], [274], [275], [276], [277], [278], [279], [280], [281], [285], [286], [287], [289], [290], [291], [292], [293], [294], [295], [296], [297], [298], [299], [300], [305], [306], [309], [310], [311], [312], [313], [314], [319], [320], [321], [322], [323], [324], [325], [326], [327], [329], [330], [331], [332], [335], [336] [2018-12-08 16:03:54,389 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-08 16:03:54,390 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-08 16:03:55,295 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-08 16:03:55,296 INFO L272 AbstractInterpreter]: Visited 137 different actions 807 times. Merged at 32 different actions 157 times. Never widened. Performed 26436 root evaluator evaluations with a maximum evaluation depth of 5. Performed 26436 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 22 fixpoints after 6 different actions. Largest state had 132 variables. [2018-12-08 16:03:55,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:03:55,300 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-08 16:03:55,300 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 16:03:55,300 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f527784-1844-40c1-8da2-76cbb963f0c9/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 [2018-12-08 16:03:55,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:03:55,339 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-08 16:03:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:03:55,407 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 16:03:55,429 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-12-08 16:03:55,429 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-08 16:03:55,597 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 69 proven. 4 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2018-12-08 16:03:55,622 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-12-08 16:03:55,622 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 6 [2018-12-08 16:03:55,622 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 16:03:55,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-08 16:03:55,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-08 16:03:55,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-08 16:03:55,623 INFO L87 Difference]: Start difference. First operand 2009 states and 2277 transitions. Second operand 6 states. [2018-12-08 16:03:55,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:03:55,689 INFO L93 Difference]: Finished difference Result 3765 states and 4386 transitions. [2018-12-08 16:03:55,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-08 16:03:55,690 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 266 [2018-12-08 16:03:55,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:03:55,693 INFO L225 Difference]: With dead ends: 3765 [2018-12-08 16:03:55,694 INFO L226 Difference]: Without dead ends: 2092 [2018-12-08 16:03:55,696 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 529 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-12-08 16:03:55,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2092 states. [2018-12-08 16:03:55,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2092 to 2064. [2018-12-08 16:03:55,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2064 states. [2018-12-08 16:03:55,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2064 states to 2064 states and 2339 transitions. [2018-12-08 16:03:55,760 INFO L78 Accepts]: Start accepts. Automaton has 2064 states and 2339 transitions. Word has length 266 [2018-12-08 16:03:55,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:03:55,761 INFO L480 AbstractCegarLoop]: Abstraction has 2064 states and 2339 transitions. [2018-12-08 16:03:55,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-08 16:03:55,761 INFO L276 IsEmpty]: Start isEmpty. Operand 2064 states and 2339 transitions. [2018-12-08 16:03:55,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-12-08 16:03:55,763 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:03:55,763 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 16:03:55,763 INFO L423 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:03:55,763 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:03:55,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1899538869, now seen corresponding path program 1 times [2018-12-08 16:03:55,764 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 16:03:55,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:03:55,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:03:55,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:03:55,764 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 16:03:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:03:55,828 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 73 proven. 4 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2018-12-08 16:03:55,828 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 16:03:55,828 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-08 16:03:55,829 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 267 with the following transitions: [2018-12-08 16:03:55,829 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [46], [47], [48], [50], [53], [55], [57], [58], [59], [62], [64], [65], [66], [67], [68], [71], [72], [73], [74], [77], [79], [82], [85], [89], [92], [93], [94], [103], [107], [111], [114], [117], [119], [125], [127], [130], [146], [147], [148], [149], [150], [151], [152], [154], [159], [162], [163], [165], [170], [172], [173], [174], [175], [183], [184], [213], [216], [220], [226], [229], [233], [234], [238], [241], [243], [246], [253], [256], [259], [263], [264], [267], [268], [269], [270], [271], [273], [274], [275], [276], [277], [278], [279], [280], [281], [285], [286], [287], [289], [290], [291], [292], [293], [294], [295], [296], [297], [298], [299], [300], [305], [306], [309], [310], [311], [312], [313], [314], [319], [320], [321], [322], [323], [324], [325], [326], [327], [329], [330], [331], [332], [335], [336] [2018-12-08 16:03:55,830 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-08 16:03:55,830 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-08 16:03:56,758 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-08 16:03:56,758 INFO L272 AbstractInterpreter]: Visited 136 different actions 741 times. Merged at 26 different actions 97 times. Never widened. Performed 27758 root evaluator evaluations with a maximum evaluation depth of 5. Performed 27758 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 15 fixpoints after 4 different actions. Largest state had 132 variables. [2018-12-08 16:03:56,760 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:03:56,760 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-08 16:03:56,760 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 16:03:56,760 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f527784-1844-40c1-8da2-76cbb963f0c9/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 [2018-12-08 16:03:56,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:03:56,766 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-08 16:03:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:03:56,843 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 16:03:56,896 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-12-08 16:03:56,896 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-08 16:03:57,089 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 73 proven. 4 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2018-12-08 16:03:57,104 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-12-08 16:03:57,104 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 5] total 11 [2018-12-08 16:03:57,104 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 16:03:57,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 16:03:57,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 16:03:57,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-12-08 16:03:57,104 INFO L87 Difference]: Start difference. First operand 2064 states and 2339 transitions. Second operand 5 states. [2018-12-08 16:03:57,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:03:57,158 INFO L93 Difference]: Finished difference Result 2888 states and 3304 transitions. [2018-12-08 16:03:57,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 16:03:57,158 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 266 [2018-12-08 16:03:57,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:03:57,159 INFO L225 Difference]: With dead ends: 2888 [2018-12-08 16:03:57,159 INFO L226 Difference]: Without dead ends: 0 [2018-12-08 16:03:57,162 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 529 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-12-08 16:03:57,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-08 16:03:57,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-08 16:03:57,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-08 16:03:57,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-08 16:03:57,163 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 266 [2018-12-08 16:03:57,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:03:57,163 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 16:03:57,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 16:03:57,163 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-08 16:03:57,163 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-08 16:03:57,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-08 16:03:57,206 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,206 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,249 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,250 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,304 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,309 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,319 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,350 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,359 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,363 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,365 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,374 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,381 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,388 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,388 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,388 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,392 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,392 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,393 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,394 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,394 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,399 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,399 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,403 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,444 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,445 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,464 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,465 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,547 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,547 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,556 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,596 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,598 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,641 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,641 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,642 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,642 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,659 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,663 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,664 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,670 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,671 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,671 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,672 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,674 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,675 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,677 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,678 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,680 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,681 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,746 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,747 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,757 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,782 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,783 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,783 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,799 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,802 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,808 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,809 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,818 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,819 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,820 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,824 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,825 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,825 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,828 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,828 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,828 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,831 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,832 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,835 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,836 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,838 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,854 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,854 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,942 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,952 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,974 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,975 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,980 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,983 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,995 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,996 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:57,998 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:58,006 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:58,007 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:58,007 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:58,012 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:58,012 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:58,012 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:58,024 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:58,026 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:58,052 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:58,053 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:58,065 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:58,074 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:03:58,214 WARN L180 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 18 [2018-12-08 16:03:58,601 WARN L180 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 28 [2018-12-08 16:03:59,016 WARN L180 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 41 [2018-12-08 16:03:59,399 WARN L180 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 36 [2018-12-08 16:03:59,713 WARN L180 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 44 [2018-12-08 16:04:00,540 WARN L180 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 17 [2018-12-08 16:04:00,873 WARN L180 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 57 [2018-12-08 16:04:01,220 WARN L180 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 30 [2018-12-08 16:04:01,540 INFO L451 ceAbstractionStarter]: At program point select_helpersFINAL(lines 61 67) the Hoare annotation is: true [2018-12-08 16:04:01,540 INFO L448 ceAbstractionStarter]: For program point select_helpersEXIT(lines 61 67) no Hoare annotation was computed. [2018-12-08 16:04:01,540 INFO L448 ceAbstractionStarter]: For program point valid_productEXIT(lines 68 76) no Hoare annotation was computed. [2018-12-08 16:04:01,540 INFO L451 ceAbstractionStarter]: At program point valid_productENTRY(lines 68 76) the Hoare annotation is: true [2018-12-08 16:04:01,540 INFO L448 ceAbstractionStarter]: For program point valid_productFINAL(lines 68 76) no Hoare annotation was computed. [2018-12-08 16:04:01,540 INFO L444 ceAbstractionStarter]: At program point L95(line 95) the Hoare annotation is: (let ((.cse1 (not (= ~systemActive~0 1))) (.cse0 (not (= 0 ~pumpRunning~0)))) (and (or .cse0 (< ~waterLevel~0 1) .cse1) (or (< ~waterLevel~0 2) (not (= 1 ~pumpRunning~0)) .cse1) (or .cse0 (not (= ~systemActive~0 0))))) [2018-12-08 16:04:01,540 INFO L451 ceAbstractionStarter]: At program point __utac_acc__Specification4_spec__1ENTRY(lines 81 105) the Hoare annotation is: true [2018-12-08 16:04:01,540 INFO L448 ceAbstractionStarter]: For program point L93(lines 93 99) no Hoare annotation was computed. [2018-12-08 16:04:01,540 INFO L444 ceAbstractionStarter]: At program point L91(line 91) the Hoare annotation is: (let ((.cse0 (not (= 0 ~pumpRunning~0))) (.cse1 (not (= ~systemActive~0 1)))) (and (or .cse0 (< ~waterLevel~0 1) .cse1) (or .cse0 (not (= ~systemActive~0 0)) (= ~waterLevel~0 0)) (or (< ~waterLevel~0 2) (not (= 1 ~pumpRunning~0)) .cse1))) [2018-12-08 16:04:01,541 INFO L448 ceAbstractionStarter]: For program point L91-1(line 91) no Hoare annotation was computed. [2018-12-08 16:04:01,541 INFO L448 ceAbstractionStarter]: For program point L89(lines 89 102) no Hoare annotation was computed. [2018-12-08 16:04:01,541 INFO L448 ceAbstractionStarter]: For program point L89-1(lines 81 105) no Hoare annotation was computed. [2018-12-08 16:04:01,541 INFO L451 ceAbstractionStarter]: At program point L87(line 87) the Hoare annotation is: true [2018-12-08 16:04:01,541 INFO L448 ceAbstractionStarter]: For program point L87-1(line 87) no Hoare annotation was computed. [2018-12-08 16:04:01,541 INFO L448 ceAbstractionStarter]: For program point __utac_acc__Specification4_spec__1EXIT(lines 81 105) no Hoare annotation was computed. [2018-12-08 16:04:01,541 INFO L444 ceAbstractionStarter]: At program point mainENTRY(lines 489 511) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= ~methaneLevelCritical~0 0) (= ~waterLevel~0 |old(~waterLevel~0)|) (= ~systemActive~0 1) (= |old(~pumpRunning~0)| ~pumpRunning~0)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-12-08 16:04:01,541 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 489 511) no Hoare annotation was computed. [2018-12-08 16:04:01,541 INFO L444 ceAbstractionStarter]: At program point L501(line 501) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= ~methaneLevelCritical~0 0) (= ~waterLevel~0 |old(~waterLevel~0)|) (= main_~tmp~7 ~systemActive~0) (= ~systemActive~0 1) (= |old(~pumpRunning~0)| ~pumpRunning~0)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-12-08 16:04:01,541 INFO L444 ceAbstractionStarter]: At program point L501-1(line 501) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= ~methaneLevelCritical~0 0) (= ~waterLevel~0 |old(~waterLevel~0)|) (= main_~tmp~7 ~systemActive~0) (= ~systemActive~0 1) (= |old(~pumpRunning~0)| ~pumpRunning~0)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-12-08 16:04:01,541 INFO L448 ceAbstractionStarter]: For program point L499(lines 499 506) no Hoare annotation was computed. [2018-12-08 16:04:01,541 INFO L448 ceAbstractionStarter]: For program point L499-1(lines 499 506) no Hoare annotation was computed. [2018-12-08 16:04:01,541 INFO L448 ceAbstractionStarter]: For program point L497(line 497) no Hoare annotation was computed. [2018-12-08 16:04:01,541 INFO L444 ceAbstractionStarter]: At program point L496(line 496) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= ~methaneLevelCritical~0 0) (= ~waterLevel~0 |old(~waterLevel~0)|) (= ~systemActive~0 1) (= |old(~pumpRunning~0)| ~pumpRunning~0)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-12-08 16:04:01,541 INFO L444 ceAbstractionStarter]: At program point L495(line 495) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= ~methaneLevelCritical~0 0) (= ~waterLevel~0 |old(~waterLevel~0)|) (= ~systemActive~0 1) (= |old(~pumpRunning~0)| ~pumpRunning~0)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-12-08 16:04:01,541 INFO L444 ceAbstractionStarter]: At program point L495-1(line 495) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= ~methaneLevelCritical~0 0) (= ~waterLevel~0 |old(~waterLevel~0)|) (= ~systemActive~0 1) (= |old(~pumpRunning~0)| ~pumpRunning~0)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-12-08 16:04:01,541 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 489 511) no Hoare annotation was computed. [2018-12-08 16:04:01,541 INFO L448 ceAbstractionStarter]: For program point stopSystemEXIT(lines 401 415) no Hoare annotation was computed. [2018-12-08 16:04:01,541 INFO L444 ceAbstractionStarter]: At program point L407(line 407) the Hoare annotation is: (let ((.cse0 (= |old(~pumpRunning~0)| ~pumpRunning~0))) (and (not (= 0 |old(~pumpRunning~0)|)) (or (or (= |old(~systemActive~0)| 0) (not (= ~waterLevel~0 1))) (and (not (= ~systemActive~0 0)) .cse0)) (or (and (= ~systemActive~0 1) .cse0) (not (= |old(~systemActive~0)| 1))))) [2018-12-08 16:04:01,542 INFO L444 ceAbstractionStarter]: At program point stopSystemENTRY(lines 401 415) the Hoare annotation is: (let ((.cse1 (not (= 0 |old(~pumpRunning~0)|))) (.cse0 (= |old(~systemActive~0)| 0)) (.cse2 (= ~systemActive~0 0)) (.cse3 (= |old(~pumpRunning~0)| ~pumpRunning~0))) (and (or (not .cse0) .cse1 .cse2) (or .cse1 .cse3) (or (or .cse0 (not (= ~waterLevel~0 1))) (and (not .cse2) .cse3)) (or (and (= ~systemActive~0 1) .cse3) (not (= |old(~systemActive~0)| 1))))) [2018-12-08 16:04:01,542 INFO L448 ceAbstractionStarter]: For program point L405(lines 405 411) no Hoare annotation was computed. [2018-12-08 16:04:01,542 INFO L448 ceAbstractionStarter]: For program point stopSystemFINAL(lines 401 415) no Hoare annotation was computed. [2018-12-08 16:04:01,542 INFO L448 ceAbstractionStarter]: For program point isPumpRunningEXIT(lines 318 326) no Hoare annotation was computed. [2018-12-08 16:04:01,542 INFO L451 ceAbstractionStarter]: At program point isPumpRunningENTRY(lines 318 326) the Hoare annotation is: true [2018-12-08 16:04:01,542 INFO L448 ceAbstractionStarter]: For program point isPumpRunningFINAL(lines 318 326) no Hoare annotation was computed. [2018-12-08 16:04:01,542 INFO L451 ceAbstractionStarter]: At program point isLowWaterLevelENTRY(lines 382 400) the Hoare annotation is: true [2018-12-08 16:04:01,542 INFO L448 ceAbstractionStarter]: For program point L391(lines 391 395) no Hoare annotation was computed. [2018-12-08 16:04:01,542 INFO L448 ceAbstractionStarter]: For program point isLowWaterLevelEXIT(lines 382 400) no Hoare annotation was computed. [2018-12-08 16:04:01,542 INFO L451 ceAbstractionStarter]: At program point L389(line 389) the Hoare annotation is: true [2018-12-08 16:04:01,542 INFO L448 ceAbstractionStarter]: For program point L391-2(lines 391 395) no Hoare annotation was computed. [2018-12-08 16:04:01,542 INFO L448 ceAbstractionStarter]: For program point L389-1(line 389) no Hoare annotation was computed. [2018-12-08 16:04:01,542 INFO L448 ceAbstractionStarter]: For program point isLowWaterLevelFINAL(lines 382 400) no Hoare annotation was computed. [2018-12-08 16:04:01,542 INFO L448 ceAbstractionStarter]: For program point select_featuresEXIT(lines 54 60) no Hoare annotation was computed. [2018-12-08 16:04:01,542 INFO L451 ceAbstractionStarter]: At program point select_featuresFINAL(lines 54 60) the Hoare annotation is: true [2018-12-08 16:04:01,542 INFO L444 ceAbstractionStarter]: At program point runTestENTRY(lines 479 488) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= ~methaneLevelCritical~0 0) (= ~waterLevel~0 |old(~waterLevel~0)|) (= ~systemActive~0 1) (= |old(~pumpRunning~0)| ~pumpRunning~0)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-12-08 16:04:01,542 INFO L448 ceAbstractionStarter]: For program point runTestEXIT(lines 479 488) no Hoare annotation was computed. [2018-12-08 16:04:01,542 INFO L448 ceAbstractionStarter]: For program point runTestFINAL(lines 479 488) no Hoare annotation was computed. [2018-12-08 16:04:01,542 INFO L451 ceAbstractionStarter]: At program point isMethaneAlarmENTRY(lines 307 317) the Hoare annotation is: true [2018-12-08 16:04:01,542 INFO L448 ceAbstractionStarter]: For program point isMethaneAlarmEXIT(lines 307 317) no Hoare annotation was computed. [2018-12-08 16:04:01,542 INFO L451 ceAbstractionStarter]: At program point L312(line 312) the Hoare annotation is: true [2018-12-08 16:04:01,542 INFO L448 ceAbstractionStarter]: For program point L312-1(line 312) no Hoare annotation was computed. [2018-12-08 16:04:01,543 INFO L448 ceAbstractionStarter]: For program point isMethaneAlarmFINAL(lines 307 317) no Hoare annotation was computed. [2018-12-08 16:04:01,543 INFO L444 ceAbstractionStarter]: At program point deactivatePumpENTRY(lines 299 306) the Hoare annotation is: (let ((.cse0 (= |old(~pumpRunning~0)| ~pumpRunning~0))) (and (or .cse0 (not (= ~systemActive~0 1))) (or (or (= ~systemActive~0 0) (not (= ~waterLevel~0 1))) .cse0))) [2018-12-08 16:04:01,543 INFO L448 ceAbstractionStarter]: For program point deactivatePumpEXIT(lines 299 306) no Hoare annotation was computed. [2018-12-08 16:04:01,543 INFO L448 ceAbstractionStarter]: For program point deactivatePumpFINAL(lines 299 306) no Hoare annotation was computed. [2018-12-08 16:04:01,543 INFO L448 ceAbstractionStarter]: For program point isHighWaterSensorDryEXIT(lines 592 605) no Hoare annotation was computed. [2018-12-08 16:04:01,543 INFO L448 ceAbstractionStarter]: For program point L596(lines 596 602) no Hoare annotation was computed. [2018-12-08 16:04:01,543 INFO L451 ceAbstractionStarter]: At program point isHighWaterSensorDryENTRY(lines 592 605) the Hoare annotation is: true [2018-12-08 16:04:01,543 INFO L448 ceAbstractionStarter]: For program point isHighWaterSensorDryFINAL(lines 592 605) no Hoare annotation was computed. [2018-12-08 16:04:01,543 INFO L448 ceAbstractionStarter]: For program point L256(lines 256 264) no Hoare annotation was computed. [2018-12-08 16:04:01,543 INFO L444 ceAbstractionStarter]: At program point L254(line 254) the Hoare annotation is: (let ((.cse0 (< ~waterLevel~0 1)) (.cse1 (not (= ~systemActive~0 1)))) (and (or .cse0 (not (= 1 |old(~pumpRunning~0)|)) (= |old(~pumpRunning~0)| ~pumpRunning~0) .cse1) (or (not (= 0 |old(~pumpRunning~0)|)) .cse0 .cse1))) [2018-12-08 16:04:01,543 INFO L448 ceAbstractionStarter]: For program point L254-1(line 254) no Hoare annotation was computed. [2018-12-08 16:04:01,543 INFO L448 ceAbstractionStarter]: For program point L252(lines 252 269) no Hoare annotation was computed. [2018-12-08 16:04:01,543 INFO L448 ceAbstractionStarter]: For program point processEnvironmentEXIT(lines 248 272) no Hoare annotation was computed. [2018-12-08 16:04:01,543 INFO L444 ceAbstractionStarter]: At program point processEnvironmentENTRY(lines 248 272) the Hoare annotation is: (let ((.cse0 (< ~waterLevel~0 1)) (.cse2 (not (= ~systemActive~0 1))) (.cse1 (= |old(~pumpRunning~0)| ~pumpRunning~0))) (and (or .cse0 (not (= 1 |old(~pumpRunning~0)|)) .cse1 .cse2) (or (not (= 0 |old(~pumpRunning~0)|)) .cse0 .cse2 .cse1))) [2018-12-08 16:04:01,543 INFO L444 ceAbstractionStarter]: At program point L267(line 267) the Hoare annotation is: (let ((.cse0 (< ~waterLevel~0 1)) (.cse1 (not (= ~systemActive~0 1)))) (and (or .cse0 (not (= 1 |old(~pumpRunning~0)|)) .cse1) (or (not (= 0 |old(~pumpRunning~0)|)) .cse0 .cse1 (= |old(~pumpRunning~0)| ~pumpRunning~0)))) [2018-12-08 16:04:01,543 INFO L448 ceAbstractionStarter]: For program point L267-1(lines 248 272) no Hoare annotation was computed. [2018-12-08 16:04:01,543 INFO L444 ceAbstractionStarter]: At program point L262(line 262) the Hoare annotation is: (let ((.cse0 (< ~waterLevel~0 1)) (.cse1 (not (= ~systemActive~0 1)))) (and (or .cse0 (not (= 1 |old(~pumpRunning~0)|)) .cse1) (or (not (= 0 |old(~pumpRunning~0)|)) .cse0 .cse1))) [2018-12-08 16:04:01,543 INFO L444 ceAbstractionStarter]: At program point L258(line 258) the Hoare annotation is: (let ((.cse0 (< ~waterLevel~0 1)) (.cse1 (not (= ~systemActive~0 1)))) (and (or (not (= 0 |old(~pumpRunning~0)|)) .cse0 .cse1) (or .cse0 (not (= 1 |old(~pumpRunning~0)|)) .cse1 (and (<= 1 processEnvironment_~tmp~3) (= |old(~pumpRunning~0)| ~pumpRunning~0))))) [2018-12-08 16:04:01,543 INFO L448 ceAbstractionStarter]: For program point processEnvironment__wrappee__baseEXIT(lines 214 220) no Hoare annotation was computed. [2018-12-08 16:04:01,543 INFO L451 ceAbstractionStarter]: At program point processEnvironment__wrappee__baseFINAL(lines 214 220) the Hoare annotation is: true [2018-12-08 16:04:01,544 INFO L444 ceAbstractionStarter]: At program point testENTRY(lines 112 177) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= ~methaneLevelCritical~0 0) (= ~waterLevel~0 |old(~waterLevel~0)|) (= ~systemActive~0 1) (= |old(~pumpRunning~0)| ~pumpRunning~0)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-12-08 16:04:01,544 INFO L448 ceAbstractionStarter]: For program point L124(lines 124 128) no Hoare annotation was computed. [2018-12-08 16:04:01,544 INFO L448 ceAbstractionStarter]: For program point testFINAL(lines 112 177) no Hoare annotation was computed. [2018-12-08 16:04:01,544 INFO L444 ceAbstractionStarter]: At program point L170(lines 121 171) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-12-08 16:04:01,544 INFO L444 ceAbstractionStarter]: At program point L160(line 160) the Hoare annotation is: (let ((.cse0 (= test_~splverifierCounter~0 0))) (or (not (= 0 |old(~pumpRunning~0)|)) (and (= ~pumpRunning~0 0) .cse0) (and (= ~systemActive~0 1) .cse0) (not (= |old(~systemActive~0)| 1)) (and (= ~waterLevel~0 1) (not (= ~systemActive~0 0)) .cse0) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0)))) [2018-12-08 16:04:01,544 INFO L448 ceAbstractionStarter]: For program point L158(lines 158 164) no Hoare annotation was computed. [2018-12-08 16:04:01,544 INFO L444 ceAbstractionStarter]: At program point L158-1(lines 152 165) the Hoare annotation is: (let ((.cse1 (= ~systemActive~0 1)) (.cse0 (= ~pumpRunning~0 0)) (.cse2 (= test_~splverifierCounter~0 0))) (or (and (<= 1 ~waterLevel~0) .cse0 .cse1 .cse2) (not (= |old(~systemActive~0)| 1)) (and (<= 2 ~waterLevel~0) (= ~pumpRunning~0 1) .cse1 .cse2) (and (= ~systemActive~0 0) .cse0 .cse2) (not (= 0 |old(~pumpRunning~0)|)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0)))) [2018-12-08 16:04:01,544 INFO L448 ceAbstractionStarter]: For program point L123(lines 122 169) no Hoare annotation was computed. [2018-12-08 16:04:01,544 INFO L448 ceAbstractionStarter]: For program point L152(lines 152 165) no Hoare annotation was computed. [2018-12-08 16:04:01,544 INFO L444 ceAbstractionStarter]: At program point L144(line 144) the Hoare annotation is: (let ((.cse1 (= ~systemActive~0 1)) (.cse0 (= ~pumpRunning~0 0)) (.cse2 (= test_~splverifierCounter~0 0))) (or (and (<= 1 ~waterLevel~0) .cse0 .cse1 .cse2) (not (= |old(~systemActive~0)| 1)) (and (<= 2 ~waterLevel~0) (= ~pumpRunning~0 1) .cse1 .cse2) (and (= ~systemActive~0 0) .cse0 .cse2) (not (= 0 |old(~pumpRunning~0)|)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0)))) [2018-12-08 16:04:01,544 INFO L448 ceAbstractionStarter]: For program point L142(lines 142 148) no Hoare annotation was computed. [2018-12-08 16:04:01,544 INFO L448 ceAbstractionStarter]: For program point L142-1(lines 142 148) no Hoare annotation was computed. [2018-12-08 16:04:01,544 INFO L444 ceAbstractionStarter]: At program point L167(lines 122 169) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse2 (= ~systemActive~0 1)) (.cse1 (= test_~splverifierCounter~0 0))) (or (and (= ~systemActive~0 0) .cse0 .cse1) (not (= 0 |old(~pumpRunning~0)|)) (and (<= 1 ~waterLevel~0) .cse0 .cse2 .cse1) (not (= |old(~systemActive~0)| 1)) (and (<= 2 ~waterLevel~0) (= ~pumpRunning~0 1) .cse2 .cse1) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0)))) [2018-12-08 16:04:01,544 INFO L444 ceAbstractionStarter]: At program point L134(line 134) the Hoare annotation is: (let ((.cse2 (= ~pumpRunning~0 0)) (.cse0 (= ~systemActive~0 1)) (.cse1 (= test_~splverifierCounter~0 0))) (or (not (= |old(~systemActive~0)| 1)) (and (<= 2 ~waterLevel~0) (= ~pumpRunning~0 1) .cse0 .cse1) (and (= ~systemActive~0 0) .cse2 .cse1) (not (= 0 |old(~pumpRunning~0)|)) (and (<= 1 ~waterLevel~0) .cse2 .cse0 .cse1) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0)))) [2018-12-08 16:04:01,544 INFO L448 ceAbstractionStarter]: For program point L132(lines 132 138) no Hoare annotation was computed. [2018-12-08 16:04:01,544 INFO L448 ceAbstractionStarter]: For program point L132-1(lines 132 138) no Hoare annotation was computed. [2018-12-08 16:04:01,544 INFO L448 ceAbstractionStarter]: For program point testEXIT(lines 112 177) no Hoare annotation was computed. [2018-12-08 16:04:01,545 INFO L444 ceAbstractionStarter]: At program point activatePump__wrappee__lowWaterSensorENTRY(lines 273 280) the Hoare annotation is: (or (= |old(~pumpRunning~0)| ~pumpRunning~0) (or (not (= 0 |old(~pumpRunning~0)|)) (not (= ~systemActive~0 1))) (< ~waterLevel~0 2)) [2018-12-08 16:04:01,545 INFO L448 ceAbstractionStarter]: For program point activatePump__wrappee__lowWaterSensorFINAL(lines 273 280) no Hoare annotation was computed. [2018-12-08 16:04:01,545 INFO L448 ceAbstractionStarter]: For program point activatePump__wrappee__lowWaterSensorEXIT(lines 273 280) no Hoare annotation was computed. [2018-12-08 16:04:01,545 INFO L448 ceAbstractionStarter]: For program point isLowWaterSensorDryFINAL(lines 606 614) no Hoare annotation was computed. [2018-12-08 16:04:01,545 INFO L451 ceAbstractionStarter]: At program point isLowWaterSensorDryENTRY(lines 606 614) the Hoare annotation is: true [2018-12-08 16:04:01,545 INFO L448 ceAbstractionStarter]: For program point isLowWaterSensorDryEXIT(lines 606 614) no Hoare annotation was computed. [2018-12-08 16:04:01,545 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-08 16:04:01,545 INFO L444 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~waterLevel~0 |old(~waterLevel~0)|) (= |old(~pumpRunning~0)| ~pumpRunning~0)) [2018-12-08 16:04:01,545 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-08 16:04:01,545 INFO L448 ceAbstractionStarter]: For program point L289(lines 289 295) no Hoare annotation was computed. [2018-12-08 16:04:01,545 INFO L444 ceAbstractionStarter]: At program point L287(line 287) the Hoare annotation is: (or (= |old(~pumpRunning~0)| ~pumpRunning~0) (not (= 0 |old(~pumpRunning~0)|)) (< ~waterLevel~0 2) (not (= ~systemActive~0 1))) [2018-12-08 16:04:01,545 INFO L448 ceAbstractionStarter]: For program point L287-1(line 287) no Hoare annotation was computed. [2018-12-08 16:04:01,545 INFO L448 ceAbstractionStarter]: For program point activatePumpEXIT(lines 282 298) no Hoare annotation was computed. [2018-12-08 16:04:01,546 INFO L444 ceAbstractionStarter]: At program point activatePumpENTRY(lines 282 298) the Hoare annotation is: (or (= |old(~pumpRunning~0)| ~pumpRunning~0) (not (= 0 |old(~pumpRunning~0)|)) (< ~waterLevel~0 2) (not (= ~systemActive~0 1))) [2018-12-08 16:04:01,546 INFO L444 ceAbstractionStarter]: At program point L293(line 293) the Hoare annotation is: (let ((.cse0 (not (= 0 |old(~pumpRunning~0)|))) (.cse1 (< ~waterLevel~0 2)) (.cse2 (not (= ~systemActive~0 1)))) (and (or (< ~methaneLevelCritical~0 1) .cse0 .cse1 .cse2) (or (= |old(~pumpRunning~0)| ~pumpRunning~0) .cse0 .cse1 .cse2))) [2018-12-08 16:04:01,546 INFO L448 ceAbstractionStarter]: For program point L293-1(lines 282 298) no Hoare annotation was computed. [2018-12-08 16:04:01,546 INFO L448 ceAbstractionStarter]: For program point L370-1(line 370) no Hoare annotation was computed. [2018-12-08 16:04:01,546 INFO L448 ceAbstractionStarter]: For program point isHighWaterLevelEXIT(lines 363 381) no Hoare annotation was computed. [2018-12-08 16:04:01,546 INFO L451 ceAbstractionStarter]: At program point isHighWaterLevelENTRY(lines 363 381) the Hoare annotation is: true [2018-12-08 16:04:01,546 INFO L448 ceAbstractionStarter]: For program point isHighWaterLevelFINAL(lines 363 381) no Hoare annotation was computed. [2018-12-08 16:04:01,546 INFO L448 ceAbstractionStarter]: For program point L372(lines 372 376) no Hoare annotation was computed. [2018-12-08 16:04:01,546 INFO L451 ceAbstractionStarter]: At program point L370(line 370) the Hoare annotation is: true [2018-12-08 16:04:01,546 INFO L448 ceAbstractionStarter]: For program point L372-2(lines 372 376) no Hoare annotation was computed. [2018-12-08 16:04:01,546 INFO L451 ceAbstractionStarter]: At program point getWaterLevelENTRY(lines 583 591) the Hoare annotation is: true [2018-12-08 16:04:01,546 INFO L448 ceAbstractionStarter]: For program point getWaterLevelFINAL(lines 583 591) no Hoare annotation was computed. [2018-12-08 16:04:01,546 INFO L448 ceAbstractionStarter]: For program point getWaterLevelEXIT(lines 583 591) no Hoare annotation was computed. [2018-12-08 16:04:01,547 INFO L448 ceAbstractionStarter]: For program point L543-1(lines 539 550) no Hoare annotation was computed. [2018-12-08 16:04:01,547 INFO L444 ceAbstractionStarter]: At program point changeMethaneLevelENTRY(lines 539 550) the Hoare annotation is: (let ((.cse4 (not (= ~waterLevel~0 1))) (.cse9 (= ~methaneLevelCritical~0 1)) (.cse8 (not (= |old(~methaneLevelCritical~0)| 1))) (.cse5 (= ~methaneLevelCritical~0 0)) (.cse2 (not (= |old(~methaneLevelCritical~0)| 0))) (.cse3 (not (= ~waterLevel~0 2))) (.cse6 (< |old(~methaneLevelCritical~0)| 1)) (.cse0 (not (= 0 ~pumpRunning~0))) (.cse1 (not (= ~systemActive~0 1))) (.cse7 (<= 1 ~methaneLevelCritical~0))) (and (or (and (or .cse0 .cse1 .cse2 .cse3) (or .cse0 .cse1 .cse4 .cse2)) .cse5) (or .cse6 .cse0 .cse7 .cse1 .cse4) (or .cse8 .cse0 .cse9 .cse1 .cse4) (or .cse9 (or .cse8 (or .cse0 .cse1 .cse3))) (or .cse5 (not (= 1 ~pumpRunning~0)) (or .cse1 .cse2 .cse3)) (or (or .cse6 (or .cse0 (< ~waterLevel~0 2) .cse1)) .cse7))) [2018-12-08 16:04:01,547 INFO L448 ceAbstractionStarter]: For program point changeMethaneLevelEXIT(lines 539 550) no Hoare annotation was computed. [2018-12-08 16:04:01,547 INFO L451 ceAbstractionStarter]: At program point isMethaneLevelCriticalENTRY(lines 551 559) the Hoare annotation is: true [2018-12-08 16:04:01,547 INFO L448 ceAbstractionStarter]: For program point isMethaneLevelCriticalFINAL(lines 551 559) no Hoare annotation was computed. [2018-12-08 16:04:01,547 INFO L448 ceAbstractionStarter]: For program point isMethaneLevelCriticalEXIT(lines 551 559) no Hoare annotation was computed. [2018-12-08 16:04:01,547 INFO L448 ceAbstractionStarter]: For program point cleanupEXIT(lines 418 447) no Hoare annotation was computed. [2018-12-08 16:04:01,547 INFO L451 ceAbstractionStarter]: At program point cleanupENTRY(lines 418 447) the Hoare annotation is: true [2018-12-08 16:04:01,547 INFO L451 ceAbstractionStarter]: At program point L443(lines 418 447) the Hoare annotation is: true [2018-12-08 16:04:01,547 INFO L448 ceAbstractionStarter]: For program point L439(line 439) no Hoare annotation was computed. [2018-12-08 16:04:01,547 INFO L448 ceAbstractionStarter]: For program point L432(lines 432 436) no Hoare annotation was computed. [2018-12-08 16:04:01,547 INFO L451 ceAbstractionStarter]: At program point L432-1(lines 432 436) the Hoare annotation is: true [2018-12-08 16:04:01,548 INFO L448 ceAbstractionStarter]: For program point L429(line 429) no Hoare annotation was computed. [2018-12-08 16:04:01,548 INFO L451 ceAbstractionStarter]: At program point L428-2(lines 428 442) the Hoare annotation is: true [2018-12-08 16:04:01,548 INFO L451 ceAbstractionStarter]: At program point L424(line 424) the Hoare annotation is: true [2018-12-08 16:04:01,548 INFO L448 ceAbstractionStarter]: For program point L424-1(line 424) no Hoare annotation was computed. [2018-12-08 16:04:01,548 INFO L444 ceAbstractionStarter]: At program point timeShiftENTRY(lines 190 213) the Hoare annotation is: (let ((.cse2 (= |old(~pumpRunning~0)| ~pumpRunning~0))) (let ((.cse3 (and (= ~waterLevel~0 |old(~waterLevel~0)|) .cse2)) (.cse4 (not (= ~systemActive~0 1))) (.cse0 (not (= 0 |old(~pumpRunning~0)|))) (.cse1 (not (= ~systemActive~0 0)))) (and (or .cse0 .cse1 .cse2) (or .cse3 (not (= 1 |old(~pumpRunning~0)|)) (or (< |old(~waterLevel~0)| 2) .cse4)) (or .cse3 .cse0 (< |old(~waterLevel~0)| 1) .cse4) (or .cse0 .cse1 (not (= ~waterLevel~0 0)) (= |old(~waterLevel~0)| 0)) (or .cse0 .cse1 (= ~waterLevel~0 1) (not (= |old(~waterLevel~0)| 1)))))) [2018-12-08 16:04:01,548 INFO L444 ceAbstractionStarter]: At program point L203(line 203) the Hoare annotation is: (let ((.cse0 (not (= 0 |old(~pumpRunning~0)|))) (.cse2 (= |old(~pumpRunning~0)| ~pumpRunning~0)) (.cse3 (not (= 1 |old(~pumpRunning~0)|))) (.cse1 (not (= ~systemActive~0 1)))) (and (or .cse0 (< |old(~waterLevel~0)| 1) .cse1 (and (= ~waterLevel~0 |old(~waterLevel~0)|) .cse2)) (or .cse0 (not (= ~systemActive~0 0))) (or (and (<= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) .cse2) .cse3 (or (< |old(~waterLevel~0)| 2) .cse1)) (or (or .cse3 .cse1 (not (= ~methaneLevelCritical~0 0)) (not (= |old(~waterLevel~0)| 2))) (or (= ~waterLevel~0 2) (= ~waterLevel~0 1))))) [2018-12-08 16:04:01,548 INFO L448 ceAbstractionStarter]: For program point timeShiftEXIT(lines 190 213) no Hoare annotation was computed. [2018-12-08 16:04:01,548 INFO L444 ceAbstractionStarter]: At program point L201(lines 201 207) the Hoare annotation is: (let ((.cse2 (= |old(~pumpRunning~0)| ~pumpRunning~0)) (.cse6 (not (= 1 |old(~pumpRunning~0)|))) (.cse7 (< |old(~waterLevel~0)| 2)) (.cse4 (not (= ~systemActive~0 1))) (.cse0 (not (= 0 |old(~pumpRunning~0)|))) (.cse1 (not (= ~systemActive~0 0))) (.cse5 (= ~waterLevel~0 1))) (and (or .cse0 .cse1 .cse2) (let ((.cse3 (= ~waterLevel~0 |old(~waterLevel~0)|))) (or .cse0 (and (<= 2 ~waterLevel~0) (= ~pumpRunning~0 1) .cse3) (< |old(~waterLevel~0)| 1) .cse4 (and .cse3 .cse2))) (or (or .cse5 (= ~waterLevel~0 2)) (or .cse6 .cse4 (not (= ~methaneLevelCritical~0 0)) (not (= |old(~waterLevel~0)| 2)))) (or .cse2 (or (< ~methaneLevelCritical~0 1) (or .cse0 .cse7 .cse4))) (or .cse0 .cse1 (not (= ~waterLevel~0 0)) (= |old(~waterLevel~0)| 0)) (or .cse6 (and (<= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (= ~pumpRunning~0 0)) (or .cse7 .cse4)) (or .cse0 .cse1 .cse5 (not (= |old(~waterLevel~0)| 1))))) [2018-12-08 16:04:01,548 INFO L448 ceAbstractionStarter]: For program point timeShiftFINAL(lines 190 213) no Hoare annotation was computed. [2018-12-08 16:04:01,549 INFO L444 ceAbstractionStarter]: At program point L196(line 196) the Hoare annotation is: (let ((.cse1 (not (= 0 |old(~pumpRunning~0)|))) (.cse0 (not (= ~systemActive~0 1)))) (and (or (and (= ~waterLevel~0 |old(~waterLevel~0)|) (= |old(~pumpRunning~0)| ~pumpRunning~0)) (not (= 1 |old(~pumpRunning~0)|)) (or (< |old(~waterLevel~0)| 2) .cse0)) (or .cse1 (not (= ~systemActive~0 0))) (or .cse1 (< |old(~waterLevel~0)| 1) .cse0))) [2018-12-08 16:04:01,549 INFO L448 ceAbstractionStarter]: For program point L194(lines 193 212) no Hoare annotation was computed. [2018-12-08 16:04:01,549 INFO L444 ceAbstractionStarter]: At program point lowerWaterLevelENTRY(lines 515 526) the Hoare annotation is: (or (= ~waterLevel~0 |old(~waterLevel~0)|) (not (= 1 ~pumpRunning~0)) (or (< |old(~waterLevel~0)| 2) (not (= ~systemActive~0 1)))) [2018-12-08 16:04:01,549 INFO L448 ceAbstractionStarter]: For program point lowerWaterLevelEXIT(lines 515 526) no Hoare annotation was computed. [2018-12-08 16:04:01,549 INFO L448 ceAbstractionStarter]: For program point L519-1(lines 515 526) no Hoare annotation was computed. [2018-12-08 16:04:01,549 INFO L448 ceAbstractionStarter]: For program point setupEXIT(lines 472 478) no Hoare annotation was computed. [2018-12-08 16:04:01,549 INFO L451 ceAbstractionStarter]: At program point setupFINAL(lines 472 478) the Hoare annotation is: true [2018-12-08 16:04:01,549 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-08 16:04:01,549 INFO L444 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (= ~waterLevel~0 1) (= ~methaneLevelCritical~0 0) (= ~pumpRunning~0 0) (= ~systemActive~0 1)) [2018-12-08 16:04:01,549 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-08 16:04:01,549 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-08 16:04:01,549 INFO L444 ceAbstractionStarter]: At program point processEnvironment__wrappee__highWaterSensorENTRY(lines 222 246) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (< ~waterLevel~0 1) (not (= ~systemActive~0 1)) (= |old(~pumpRunning~0)| ~pumpRunning~0)) [2018-12-08 16:04:01,550 INFO L448 ceAbstractionStarter]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 222 246) no Hoare annotation was computed. [2018-12-08 16:04:01,550 INFO L444 ceAbstractionStarter]: At program point L241(line 241) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (< ~waterLevel~0 1) (not (= ~systemActive~0 1))) [2018-12-08 16:04:01,550 INFO L448 ceAbstractionStarter]: For program point L241-1(lines 222 246) no Hoare annotation was computed. [2018-12-08 16:04:01,550 INFO L444 ceAbstractionStarter]: At program point L236(line 236) the Hoare annotation is: (or (and (= 0 processEnvironment__wrappee__highWaterSensor_~tmp~2) (= |old(~pumpRunning~0)| ~pumpRunning~0)) (not (= 0 |old(~pumpRunning~0)|)) (< ~waterLevel~0 1) (not (= ~systemActive~0 1))) [2018-12-08 16:04:01,550 INFO L444 ceAbstractionStarter]: At program point L232(line 232) the Hoare annotation is: (or (and (<= 2 ~waterLevel~0) (= |old(~pumpRunning~0)| ~pumpRunning~0)) (not (= 0 |old(~pumpRunning~0)|)) (< ~waterLevel~0 1) (not (= ~systemActive~0 1))) [2018-12-08 16:04:01,550 INFO L448 ceAbstractionStarter]: For program point L230(lines 230 238) no Hoare annotation was computed. [2018-12-08 16:04:01,550 INFO L444 ceAbstractionStarter]: At program point L228(line 228) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (< ~waterLevel~0 1) (not (= ~systemActive~0 1)) (= |old(~pumpRunning~0)| ~pumpRunning~0)) [2018-12-08 16:04:01,550 INFO L448 ceAbstractionStarter]: For program point L228-1(line 228) no Hoare annotation was computed. [2018-12-08 16:04:01,550 INFO L448 ceAbstractionStarter]: For program point L226(lines 226 243) no Hoare annotation was computed. [2018-12-08 16:04:01,550 INFO L448 ceAbstractionStarter]: For program point waterRiseEXIT(lines 527 538) no Hoare annotation was computed. [2018-12-08 16:04:01,550 INFO L444 ceAbstractionStarter]: At program point waterRiseENTRY(lines 527 538) the Hoare annotation is: (let ((.cse0 (= ~waterLevel~0 |old(~waterLevel~0)|)) (.cse1 (not (= ~systemActive~0 1))) (.cse2 (not (= 0 ~pumpRunning~0)))) (and (or .cse0 .cse1 (< |old(~waterLevel~0)| 2) (not (= 1 ~pumpRunning~0))) (or .cse0 (< |old(~waterLevel~0)| 1) (or .cse2 .cse1)) (or .cse2 (not (= ~systemActive~0 0)) (= ~waterLevel~0 1) (not (= |old(~waterLevel~0)| 1))))) [2018-12-08 16:04:01,550 INFO L448 ceAbstractionStarter]: For program point L531-1(lines 527 538) no Hoare annotation was computed. [2018-12-08 16:04:01,551 INFO L448 ceAbstractionStarter]: For program point __automaton_failFINAL(lines 616 623) no Hoare annotation was computed. [2018-12-08 16:04:01,551 INFO L448 ceAbstractionStarter]: For program point __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION(line 620) no Hoare annotation was computed. [2018-12-08 16:04:01,551 INFO L451 ceAbstractionStarter]: At program point __automaton_failENTRY(lines 616 623) the Hoare annotation is: true [2018-12-08 16:04:01,551 INFO L448 ceAbstractionStarter]: For program point __automaton_failEXIT(lines 616 623) no Hoare annotation was computed. [2018-12-08 16:04:01,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 04:04:01 BoogieIcfgContainer [2018-12-08 16:04:01,560 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 16:04:01,560 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 16:04:01,561 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 16:04:01,561 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 16:04:01,561 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 04:03:32" (3/4) ... [2018-12-08 16:04:01,564 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-08 16:04:01,568 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure select_helpers [2018-12-08 16:04:01,568 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure valid_product [2018-12-08 16:04:01,569 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __utac_acc__Specification4_spec__1 [2018-12-08 16:04:01,569 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-08 16:04:01,569 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure stopSystem [2018-12-08 16:04:01,569 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isPumpRunning [2018-12-08 16:04:01,569 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isLowWaterLevel [2018-12-08 16:04:01,569 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure select_features [2018-12-08 16:04:01,569 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure runTest [2018-12-08 16:04:01,569 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2018-12-08 16:04:01,569 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2018-12-08 16:04:01,569 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isHighWaterSensorDry [2018-12-08 16:04:01,569 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment [2018-12-08 16:04:01,569 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2018-12-08 16:04:01,569 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure test [2018-12-08 16:04:01,569 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure activatePump__wrappee__lowWaterSensor [2018-12-08 16:04:01,569 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isLowWaterSensorDry [2018-12-08 16:04:01,569 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-08 16:04:01,569 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure activatePump [2018-12-08 16:04:01,569 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isHighWaterLevel [2018-12-08 16:04:01,569 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure getWaterLevel [2018-12-08 16:04:01,569 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2018-12-08 16:04:01,569 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2018-12-08 16:04:01,569 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2018-12-08 16:04:01,569 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2018-12-08 16:04:01,569 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure lowerWaterLevel [2018-12-08 16:04:01,570 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure setup [2018-12-08 16:04:01,570 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2018-12-08 16:04:01,570 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2018-12-08 16:04:01,570 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __automaton_fail [2018-12-08 16:04:01,574 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 47 nodes and edges [2018-12-08 16:04:01,575 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2018-12-08 16:04:01,575 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-12-08 16:04:01,575 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-12-08 16:04:01,576 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-08 16:04:01,576 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-08 16:04:01,595 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((systemActive == 0 && pumpRunning == 0) && splverifierCounter == 0) || !(0 == \old(pumpRunning))) || (((1 <= waterLevel && pumpRunning == 0) && systemActive == 1) && splverifierCounter == 0)) || !(\old(systemActive) == 1)) || (((2 <= waterLevel && pumpRunning == 1) && systemActive == 1) && splverifierCounter == 0)) || !(\old(waterLevel) == 1)) || !(\old(methaneLevelCritical) == 0) [2018-12-08 16:04:01,595 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(0 == \old(pumpRunning)) || !(\old(systemActive) == 1)) || !(\old(waterLevel) == 1)) || !(\old(methaneLevelCritical) == 0) [2018-12-08 16:04:01,627 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_9f527784-1844-40c1-8da2-76cbb963f0c9/bin-2019/utaipan/witness.graphml [2018-12-08 16:04:01,627 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 16:04:01,628 INFO L168 Benchmark]: Toolchain (without parser) took 30243.18 ms. Allocated memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: 1.4 GB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -130.9 MB). Peak memory consumption was 1.3 GB. Max. memory is 11.5 GB. [2018-12-08 16:04:01,628 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 16:04:01,628 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.65 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.9 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -148.2 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. [2018-12-08 16:04:01,629 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.50 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 16:04:01,629 INFO L168 Benchmark]: Boogie Preprocessor took 21.49 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-08 16:04:01,629 INFO L168 Benchmark]: RCFGBuilder took 326.11 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 11.5 GB. [2018-12-08 16:04:01,629 INFO L168 Benchmark]: TraceAbstraction took 29495.27 ms. Allocated memory was 1.1 GB in the beginning and 2.4 GB in the end (delta: 1.3 GB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -35.6 MB). Peak memory consumption was 1.4 GB. Max. memory is 11.5 GB. [2018-12-08 16:04:01,629 INFO L168 Benchmark]: Witness Printer took 66.79 ms. Allocated memory is still 2.4 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.4 kB). Peak memory consumption was 6.4 kB. Max. memory is 11.5 GB. [2018-12-08 16:04:01,630 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 310.65 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.9 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -148.2 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.50 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.49 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 326.11 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 29495.27 ms. Allocated memory was 1.1 GB in the beginning and 2.4 GB in the end (delta: 1.3 GB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -35.6 MB). Peak memory consumption was 1.4 GB. Max. memory is 11.5 GB. * Witness Printer took 66.79 ms. Allocated memory is still 2.4 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.4 kB). Peak memory consumption was 6.4 kB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 620]: 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: 121]: Loop Invariant Derived loop invariant: ((!(0 == \old(pumpRunning)) || !(\old(systemActive) == 1)) || !(\old(waterLevel) == 1)) || !(\old(methaneLevelCritical) == 0) - InvariantResult [Line: 418]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 122]: Loop Invariant Derived loop invariant: (((((((systemActive == 0 && pumpRunning == 0) && splverifierCounter == 0) || !(0 == \old(pumpRunning))) || (((1 <= waterLevel && pumpRunning == 0) && systemActive == 1) && splverifierCounter == 0)) || !(\old(systemActive) == 1)) || (((2 <= waterLevel && pumpRunning == 1) && systemActive == 1) && splverifierCounter == 0)) || !(\old(waterLevel) == 1)) || !(\old(methaneLevelCritical) == 0) - InvariantResult [Line: 428]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 31 procedures, 162 locations, 1 error locations. SAFE Result, 29.4s OverallTime, 17 OverallIterations, 4 TraceHistogramMax, 13.4s AutomataDifference, 0.0s DeadEndRemovalTime, 4.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 3590 SDtfs, 5507 SDslu, 12036 SDs, 0 SdLazy, 7478 SolverSat, 1960 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.0s Time, PredicateUnifierStatistics: 12 DeclaredPredicates, 3752 GetRequests, 3462 SyntacticMatches, 29 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1210 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2437occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.9s AbstIntTime, 12 AbstIntIterations, 6 AbstIntStrong, 0.9981857281978557 AbsIntWeakeningRatio, 0.8520130576713819 AbsIntAvgWeakeningVarsNumRemoved, 41.091403699673556 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 17 MinimizatonAttempts, 1429 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 67 LocationsWithAnnotation, 7321 PreInvPairs, 7509 NumberOfFragments, 1629 HoareAnnotationTreeSize, 7321 FomulaSimplifications, 65259 FormulaSimplificationTreeSizeReduction, 0.9s HoareSimplificationTime, 67 FomulaSimplificationsInter, 63480 FormulaSimplificationTreeSizeReductionInter, 3.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 3819 NumberOfCodeBlocks, 3819 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 5106 ConstructedInterpolants, 0 QuantifiedInterpolants, 1266597 SizeOfPredicates, 20 NumberOfNonLiveVariables, 6123 ConjunctsInSsa, 48 ConjunctsInUnsatCore, 29 InterpolantComputations, 9 PerfectInterpolantSequences, 2547/2716 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...