./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product57_true-unreach-call_false-termination.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_687330ff-d465-44be-82f4-d2aa82395e55/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_687330ff-d465-44be-82f4-d2aa82395e55/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_687330ff-d465-44be-82f4-d2aa82395e55/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_687330ff-d465-44be-82f4-d2aa82395e55/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product57_true-unreach-call_false-termination.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_687330ff-d465-44be-82f4-d2aa82395e55/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_687330ff-d465-44be-82f4-d2aa82395e55/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 52d4df169e32a92349e61a4b5d4d731cb2f40ee9 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 09:26:44,794 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 09:26:44,795 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 09:26:44,804 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 09:26:44,804 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 09:26:44,805 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 09:26:44,806 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 09:26:44,807 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 09:26:44,809 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 09:26:44,809 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 09:26:44,810 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 09:26:44,810 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 09:26:44,811 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 09:26:44,813 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 09:26:44,814 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 09:26:44,814 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 09:26:44,815 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 09:26:44,817 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 09:26:44,818 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 09:26:44,819 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 09:26:44,821 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 09:26:44,821 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 09:26:44,823 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 09:26:44,823 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 09:26:44,823 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 09:26:44,824 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 09:26:44,825 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 09:26:44,826 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 09:26:44,827 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 09:26:44,828 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 09:26:44,828 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 09:26:44,828 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 09:26:44,829 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 09:26:44,829 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 09:26:44,830 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 09:26:44,830 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 09:26:44,830 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_687330ff-d465-44be-82f4-d2aa82395e55/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 09:26:44,841 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 09:26:44,841 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 09:26:44,842 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 09:26:44,842 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 09:26:44,842 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 09:26:44,842 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 09:26:44,842 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 09:26:44,843 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 09:26:44,843 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 09:26:44,843 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 09:26:44,843 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 09:26:44,843 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 09:26:44,843 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 09:26:44,844 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 09:26:44,844 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 09:26:44,844 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 09:26:44,845 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 09:26:44,845 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 09:26:44,845 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 09:26:44,845 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 09:26:44,845 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 09:26:44,845 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 09:26:44,845 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 09:26:44,846 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 09:26:44,846 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 09:26:44,846 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 09:26:44,846 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 09:26:44,846 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 09:26:44,847 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 09:26:44,847 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 09:26:44,847 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 09:26:44,847 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 09:26:44,847 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 09:26:44,847 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 09:26:44,847 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 09:26:44,847 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 09:26:44,851 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 09:26:44,851 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_687330ff-d465-44be-82f4-d2aa82395e55/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 -> 52d4df169e32a92349e61a4b5d4d731cb2f40ee9 [2018-11-18 09:26:44,875 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 09:26:44,884 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 09:26:44,887 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 09:26:44,888 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 09:26:44,889 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 09:26:44,889 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_687330ff-d465-44be-82f4-d2aa82395e55/bin-2019/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product57_true-unreach-call_false-termination.cil.c [2018-11-18 09:26:44,931 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_687330ff-d465-44be-82f4-d2aa82395e55/bin-2019/utaipan/data/4b3b8303b/fe64e48124e343399af6abd87637b8d6/FLAGe07e22166 [2018-11-18 09:26:45,315 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 09:26:45,315 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_687330ff-d465-44be-82f4-d2aa82395e55/sv-benchmarks/c/product-lines/minepump_spec4_product57_true-unreach-call_false-termination.cil.c [2018-11-18 09:26:45,327 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_687330ff-d465-44be-82f4-d2aa82395e55/bin-2019/utaipan/data/4b3b8303b/fe64e48124e343399af6abd87637b8d6/FLAGe07e22166 [2018-11-18 09:26:45,708 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_687330ff-d465-44be-82f4-d2aa82395e55/bin-2019/utaipan/data/4b3b8303b/fe64e48124e343399af6abd87637b8d6 [2018-11-18 09:26:45,710 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 09:26:45,711 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 09:26:45,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 09:26:45,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 09:26:45,715 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 09:26:45,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:26:45" (1/1) ... [2018-11-18 09:26:45,717 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5587dbd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:45, skipping insertion in model container [2018-11-18 09:26:45,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:26:45" (1/1) ... [2018-11-18 09:26:45,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 09:26:45,763 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 09:26:45,981 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:26:45,991 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 09:26:46,111 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:26:46,132 INFO L195 MainTranslator]: Completed translation [2018-11-18 09:26:46,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:46 WrapperNode [2018-11-18 09:26:46,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 09:26:46,134 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 09:26:46,134 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 09:26:46,134 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 09:26:46,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:46" (1/1) ... [2018-11-18 09:26:46,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:46" (1/1) ... [2018-11-18 09:26:46,158 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 09:26:46,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 09:26:46,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 09:26:46,159 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 09:26:46,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:46" (1/1) ... [2018-11-18 09:26:46,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:46" (1/1) ... [2018-11-18 09:26:46,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:46" (1/1) ... [2018-11-18 09:26:46,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:46" (1/1) ... [2018-11-18 09:26:46,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:46" (1/1) ... [2018-11-18 09:26:46,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:46" (1/1) ... [2018-11-18 09:26:46,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:46" (1/1) ... [2018-11-18 09:26:46,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 09:26:46,193 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 09:26:46,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 09:26:46,194 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 09:26:46,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_687330ff-d465-44be-82f4-d2aa82395e55/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 09:26:46,243 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2018-11-18 09:26:46,243 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2018-11-18 09:26:46,243 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2018-11-18 09:26:46,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2018-11-18 09:26:46,244 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 09:26:46,244 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 09:26:46,244 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2018-11-18 09:26:46,244 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2018-11-18 09:26:46,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 09:26:46,244 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2018-11-18 09:26:46,244 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2018-11-18 09:26:46,245 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2018-11-18 09:26:46,245 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2018-11-18 09:26:46,245 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2018-11-18 09:26:46,245 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2018-11-18 09:26:46,245 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2018-11-18 09:26:46,245 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2018-11-18 09:26:46,245 INFO L130 BoogieDeclarations]: Found specification of procedure test [2018-11-18 09:26:46,246 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2018-11-18 09:26:46,246 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2018-11-18 09:26:46,246 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2018-11-18 09:26:46,246 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2018-11-18 09:26:46,246 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2018-11-18 09:26:46,246 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2018-11-18 09:26:46,246 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2018-11-18 09:26:46,246 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2018-11-18 09:26:46,246 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2018-11-18 09:26:46,247 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2018-11-18 09:26:46,247 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2018-11-18 09:26:46,247 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2018-11-18 09:26:46,247 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2018-11-18 09:26:46,247 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2018-11-18 09:26:46,247 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2018-11-18 09:26:46,247 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2018-11-18 09:26:46,247 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2018-11-18 09:26:46,247 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2018-11-18 09:26:46,248 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2018-11-18 09:26:46,248 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2018-11-18 09:26:46,248 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2018-11-18 09:26:46,248 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2018-11-18 09:26:46,248 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2018-11-18 09:26:46,248 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2018-11-18 09:26:46,248 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2018-11-18 09:26:46,248 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2018-11-18 09:26:46,248 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2018-11-18 09:26:46,249 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2018-11-18 09:26:46,249 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2018-11-18 09:26:46,249 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2018-11-18 09:26:46,249 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2018-11-18 09:26:46,249 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2018-11-18 09:26:46,249 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2018-11-18 09:26:46,249 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2018-11-18 09:26:46,249 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2018-11-18 09:26:46,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 09:26:46,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 09:26:46,250 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2018-11-18 09:26:46,250 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2018-11-18 09:26:46,250 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2018-11-18 09:26:46,250 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2018-11-18 09:26:46,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 09:26:46,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 09:26:46,837 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 09:26:46,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:26:46 BoogieIcfgContainer [2018-11-18 09:26:46,838 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 09:26:46,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 09:26:46,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 09:26:46,844 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 09:26:46,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:26:45" (1/3) ... [2018-11-18 09:26:46,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59c95c2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:26:46, skipping insertion in model container [2018-11-18 09:26:46,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:46" (2/3) ... [2018-11-18 09:26:46,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59c95c2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:26:46, skipping insertion in model container [2018-11-18 09:26:46,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:26:46" (3/3) ... [2018-11-18 09:26:46,847 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product57_true-unreach-call_false-termination.cil.c [2018-11-18 09:26:46,856 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 09:26:46,864 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 09:26:46,879 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 09:26:46,909 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 09:26:46,909 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 09:26:46,909 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 09:26:46,910 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 09:26:46,910 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 09:26:46,910 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 09:26:46,910 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 09:26:46,910 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 09:26:46,929 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states. [2018-11-18 09:26:46,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-18 09:26:46,937 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:26:46,938 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:26:46,940 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:26:46,945 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:26:46,945 INFO L82 PathProgramCache]: Analyzing trace with hash 780080152, now seen corresponding path program 1 times [2018-11-18 09:26:46,948 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 09:26:46,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:26:46,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:26:46,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:26:46,991 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 09:26:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:26:47,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:26:47,180 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:26:47,181 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 09:26:47,181 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 09:26:47,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 09:26:47,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 09:26:47,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 09:26:47,195 INFO L87 Difference]: Start difference. First operand 158 states. Second operand 2 states. [2018-11-18 09:26:47,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:26:47,230 INFO L93 Difference]: Finished difference Result 290 states and 353 transitions. [2018-11-18 09:26:47,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 09:26:47,231 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2018-11-18 09:26:47,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:26:47,244 INFO L225 Difference]: With dead ends: 290 [2018-11-18 09:26:47,244 INFO L226 Difference]: Without dead ends: 145 [2018-11-18 09:26:47,248 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 09:26:47,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-11-18 09:26:47,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-11-18 09:26:47,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-11-18 09:26:47,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 168 transitions. [2018-11-18 09:26:47,289 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 168 transitions. Word has length 46 [2018-11-18 09:26:47,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:26:47,290 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 168 transitions. [2018-11-18 09:26:47,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 09:26:47,290 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 168 transitions. [2018-11-18 09:26:47,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-18 09:26:47,293 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:26:47,293 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:26:47,294 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:26:47,294 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:26:47,294 INFO L82 PathProgramCache]: Analyzing trace with hash -179872354, now seen corresponding path program 1 times [2018-11-18 09:26:47,294 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 09:26:47,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:26:47,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:26:47,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:26:47,296 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 09:26:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:26:47,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:26:47,391 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:26:47,392 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 09:26:47,396 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 09:26:47,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 09:26:47,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 09:26:47,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 09:26:47,398 INFO L87 Difference]: Start difference. First operand 145 states and 168 transitions. Second operand 3 states. [2018-11-18 09:26:47,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:26:47,419 INFO L93 Difference]: Finished difference Result 237 states and 273 transitions. [2018-11-18 09:26:47,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 09:26:47,420 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2018-11-18 09:26:47,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:26:47,422 INFO L225 Difference]: With dead ends: 237 [2018-11-18 09:26:47,422 INFO L226 Difference]: Without dead ends: 135 [2018-11-18 09:26:47,424 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 09:26:47,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-11-18 09:26:47,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-11-18 09:26:47,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-11-18 09:26:47,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 155 transitions. [2018-11-18 09:26:47,436 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 155 transitions. Word has length 48 [2018-11-18 09:26:47,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:26:47,437 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 155 transitions. [2018-11-18 09:26:47,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 09:26:47,437 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 155 transitions. [2018-11-18 09:26:47,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-11-18 09:26:47,438 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:26:47,439 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:26:47,439 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:26:47,439 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:26:47,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1996222544, now seen corresponding path program 1 times [2018-11-18 09:26:47,439 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 09:26:47,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:26:47,440 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:26:47,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:26:47,440 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 09:26:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:26:47,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:26:47,601 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:26:47,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 09:26:47,601 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 09:26:47,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 09:26:47,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 09:26:47,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-11-18 09:26:47,603 INFO L87 Difference]: Start difference. First operand 135 states and 155 transitions. Second operand 7 states. [2018-11-18 09:26:47,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:26:47,941 INFO L93 Difference]: Finished difference Result 246 states and 287 transitions. [2018-11-18 09:26:47,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 09:26:47,941 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2018-11-18 09:26:47,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:26:47,943 INFO L225 Difference]: With dead ends: 246 [2018-11-18 09:26:47,943 INFO L226 Difference]: Without dead ends: 135 [2018-11-18 09:26:47,944 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-18 09:26:47,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-11-18 09:26:47,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-11-18 09:26:47,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-11-18 09:26:47,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 154 transitions. [2018-11-18 09:26:47,956 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 154 transitions. Word has length 52 [2018-11-18 09:26:47,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:26:47,956 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 154 transitions. [2018-11-18 09:26:47,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 09:26:47,957 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 154 transitions. [2018-11-18 09:26:47,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-11-18 09:26:47,958 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:26:47,959 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:26:47,959 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:26:47,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:26:47,959 INFO L82 PathProgramCache]: Analyzing trace with hash -214992099, now seen corresponding path program 1 times [2018-11-18 09:26:47,959 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 09:26:47,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:26:47,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:26:47,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:26:47,961 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 09:26:47,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:26:48,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:26:48,054 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:26:48,055 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 09:26:48,055 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 09:26:48,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 09:26:48,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 09:26:48,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 09:26:48,056 INFO L87 Difference]: Start difference. First operand 135 states and 154 transitions. Second operand 5 states. [2018-11-18 09:26:48,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:26:48,435 INFO L93 Difference]: Finished difference Result 344 states and 409 transitions. [2018-11-18 09:26:48,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 09:26:48,436 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2018-11-18 09:26:48,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:26:48,438 INFO L225 Difference]: With dead ends: 344 [2018-11-18 09:26:48,438 INFO L226 Difference]: Without dead ends: 233 [2018-11-18 09:26:48,439 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-18 09:26:48,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-11-18 09:26:48,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 214. [2018-11-18 09:26:48,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-11-18 09:26:48,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 242 transitions. [2018-11-18 09:26:48,465 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 242 transitions. Word has length 65 [2018-11-18 09:26:48,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:26:48,465 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 242 transitions. [2018-11-18 09:26:48,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 09:26:48,466 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 242 transitions. [2018-11-18 09:26:48,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-11-18 09:26:48,467 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:26:48,467 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:26:48,468 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:26:48,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:26:48,468 INFO L82 PathProgramCache]: Analyzing trace with hash 390672516, now seen corresponding path program 1 times [2018-11-18 09:26:48,468 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 09:26:48,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:26:48,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:26:48,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:26:48,469 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 09:26:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:26:48,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:26:48,577 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:26:48,578 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-11-18 09:26:48,578 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 09:26:48,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 09:26:48,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 09:26:48,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-11-18 09:26:48,579 INFO L87 Difference]: Start difference. First operand 214 states and 242 transitions. Second operand 10 states. [2018-11-18 09:26:49,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:26:49,011 INFO L93 Difference]: Finished difference Result 694 states and 852 transitions. [2018-11-18 09:26:49,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-18 09:26:49,012 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 79 [2018-11-18 09:26:49,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:26:49,016 INFO L225 Difference]: With dead ends: 694 [2018-11-18 09:26:49,016 INFO L226 Difference]: Without dead ends: 504 [2018-11-18 09:26:49,017 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2018-11-18 09:26:49,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2018-11-18 09:26:49,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 494. [2018-11-18 09:26:49,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 494 states. [2018-11-18 09:26:49,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 577 transitions. [2018-11-18 09:26:49,056 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 577 transitions. Word has length 79 [2018-11-18 09:26:49,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:26:49,057 INFO L480 AbstractCegarLoop]: Abstraction has 494 states and 577 transitions. [2018-11-18 09:26:49,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 09:26:49,057 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 577 transitions. [2018-11-18 09:26:49,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-11-18 09:26:49,060 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:26:49,061 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-18 09:26:49,061 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:26:49,061 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:26:49,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1768419994, now seen corresponding path program 1 times [2018-11-18 09:26:49,061 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 09:26:49,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:26:49,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:26:49,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:26:49,062 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 09:26:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:26:49,154 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-18 09:26:49,155 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 09:26:49,155 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 09:26:49,156 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 155 with the following transitions: [2018-11-18 09:26:49,157 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [37], [38], [50], [53], [55], [56], [59], [62], [64], [65], [80], [83], [84], [85], [89], [95], [99], [103], [106], [111], [117], [119], [122], [137], [138], [141], [142], [143], [145], [150], [153], [154], [155], [156], [158], [161], [165], [166], [174], [175], [208], [212], [218], [226], [230], [233], [235], [238], [241], [248], [251], [255], [256], [259], [260], [261], [262], [263], [265], [266], [267], [268], [269], [270], [271], [272], [273], [277], [279], [280], [287], [288], [289], [290], [293], [294], [297], [298], [299], [300], [301], [302], [309], [310], [311], [312], [313], [314], [315], [317], [318], [319], [320], [321], [322] [2018-11-18 09:26:49,187 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 09:26:49,187 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 09:26:49,517 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-18 09:26:49,518 INFO L272 AbstractInterpreter]: Visited 51 different actions 51 times. Never merged. Never widened. Performed 1963 root evaluator evaluations with a maximum evaluation depth of 3. Performed 1963 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 132 variables. [2018-11-18 09:26:49,532 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:26:49,532 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-18 09:26:49,820 INFO L227 lantSequenceWeakener]: Weakened 76 states. On average, predicates are now at 96.77% of their original sizes. [2018-11-18 09:26:49,820 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-18 09:26:49,901 INFO L415 sIntCurrentIteration]: We unified 153 AI predicates to 153 [2018-11-18 09:26:49,901 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-18 09:26:49,902 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 09:26:49,902 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [6] total 18 [2018-11-18 09:26:49,902 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 09:26:49,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-18 09:26:49,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-18 09:26:49,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-11-18 09:26:49,903 INFO L87 Difference]: Start difference. First operand 494 states and 577 transitions. Second operand 14 states. [2018-11-18 09:26:52,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:26:52,866 INFO L93 Difference]: Finished difference Result 1321 states and 1595 transitions. [2018-11-18 09:26:52,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-18 09:26:52,866 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 154 [2018-11-18 09:26:52,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:26:52,870 INFO L225 Difference]: With dead ends: 1321 [2018-11-18 09:26:52,870 INFO L226 Difference]: Without dead ends: 851 [2018-11-18 09:26:52,871 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 153 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-11-18 09:26:52,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2018-11-18 09:26:52,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 830. [2018-11-18 09:26:52,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 830 states. [2018-11-18 09:26:52,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 969 transitions. [2018-11-18 09:26:52,916 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 969 transitions. Word has length 154 [2018-11-18 09:26:52,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:26:52,916 INFO L480 AbstractCegarLoop]: Abstraction has 830 states and 969 transitions. [2018-11-18 09:26:52,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-18 09:26:52,916 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 969 transitions. [2018-11-18 09:26:52,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-11-18 09:26:52,920 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:26:52,920 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:26:52,920 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:26:52,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:26:52,921 INFO L82 PathProgramCache]: Analyzing trace with hash -120989776, now seen corresponding path program 1 times [2018-11-18 09:26:52,921 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 09:26:52,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:26:52,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:26:52,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:26:52,922 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 09:26:52,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:26:52,993 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-18 09:26:52,994 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 09:26:52,994 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 09:26:52,994 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 158 with the following transitions: [2018-11-18 09:26:52,994 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [37], [38], [39], [41], [44], [48], [49], [50], [53], [55], [56], [57], [58], [59], [63], [64], [65], [68], [70], [73], [80], [83], [85], [89], [95], [99], [103], [106], [111], [114], [117], [119], [122], [137], [138], [139], [140], [141], [142], [143], [145], [150], [153], [154], [155], [156], [158], [161], [165], [166], [171], [173], [174], [175], [205], [208], [212], [218], [221], [225], [226], [230], [233], [235], [238], [248], [251], [255], [256], [259], [260], [261], [262], [263], [265], [266], [267], [268], [269], [270], [271], [272], [273], [275], [276], [277], [279], [280], [281], [282], [283], [284], [287], [288], [289], [290], [291], [292], [293], [294], [297], [298], [299], [300], [301], [302], [307], [308], [309], [310], [311], [312], [313], [314], [315], [317], [318], [319], [320] [2018-11-18 09:26:52,998 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 09:26:52,998 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 09:26:53,252 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-18 09:26:53,253 INFO L272 AbstractInterpreter]: Visited 62 different actions 84 times. Merged at 3 different actions 3 times. Never widened. Performed 4649 root evaluator evaluations with a maximum evaluation depth of 3. Performed 4649 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 132 variables. [2018-11-18 09:26:53,264 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:26:53,264 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-18 09:26:53,546 INFO L227 lantSequenceWeakener]: Weakened 76 states. On average, predicates are now at 96.59% of their original sizes. [2018-11-18 09:26:53,546 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-18 09:26:53,684 INFO L415 sIntCurrentIteration]: We unified 156 AI predicates to 156 [2018-11-18 09:26:53,684 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-18 09:26:53,684 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 09:26:53,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [5] total 23 [2018-11-18 09:26:53,685 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 09:26:53,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-18 09:26:53,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-18 09:26:53,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2018-11-18 09:26:53,686 INFO L87 Difference]: Start difference. First operand 830 states and 969 transitions. Second operand 20 states. [2018-11-18 09:26:59,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:26:59,027 INFO L93 Difference]: Finished difference Result 1830 states and 2227 transitions. [2018-11-18 09:26:59,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-18 09:26:59,028 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 157 [2018-11-18 09:26:59,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:26:59,034 INFO L225 Difference]: With dead ends: 1830 [2018-11-18 09:26:59,035 INFO L226 Difference]: Without dead ends: 1283 [2018-11-18 09:26:59,037 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 166 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=156, Invalid=714, Unknown=0, NotChecked=0, Total=870 [2018-11-18 09:26:59,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2018-11-18 09:26:59,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1239. [2018-11-18 09:26:59,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1239 states. [2018-11-18 09:26:59,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1437 transitions. [2018-11-18 09:26:59,108 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1437 transitions. Word has length 157 [2018-11-18 09:26:59,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:26:59,108 INFO L480 AbstractCegarLoop]: Abstraction has 1239 states and 1437 transitions. [2018-11-18 09:26:59,108 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-18 09:26:59,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1437 transitions. [2018-11-18 09:26:59,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-11-18 09:26:59,112 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:26:59,112 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:26:59,113 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:26:59,113 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:26:59,113 INFO L82 PathProgramCache]: Analyzing trace with hash 275180908, now seen corresponding path program 1 times [2018-11-18 09:26:59,113 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 09:26:59,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:26:59,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:26:59,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:26:59,114 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 09:26:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:26:59,271 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-18 09:26:59,271 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 09:26:59,271 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 09:26:59,271 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 154 with the following transitions: [2018-11-18 09:26:59,272 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [37], [38], [39], [41], [44], [48], [49], [50], [53], [55], [56], [57], [58], [59], [63], [64], [65], [68], [70], [73], [80], [83], [85], [89], [95], [99], [103], [106], [109], [111], [114], [117], [119], [122], [137], [138], [139], [140], [141], [142], [143], [145], [150], [153], [154], [155], [156], [158], [163], [165], [166], [171], [173], [174], [175], [205], [208], [212], [218], [221], [225], [226], [230], [233], [235], [238], [248], [251], [255], [256], [259], [260], [261], [262], [263], [265], [266], [267], [268], [269], [270], [271], [272], [273], [275], [276], [277], [279], [280], [281], [282], [283], [284], [287], [288], [289], [290], [291], [292], [293], [294], [297], [298], [299], [300], [301], [302], [307], [308], [309], [310], [311], [312], [313], [314], [315], [317], [318], [319], [320] [2018-11-18 09:26:59,275 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 09:26:59,275 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 09:27:00,380 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 09:27:00,380 INFO L272 AbstractInterpreter]: Visited 133 different actions 760 times. Merged at 21 different actions 81 times. Widened at 1 different actions 1 times. Performed 28121 root evaluator evaluations with a maximum evaluation depth of 5. Performed 28121 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 18 fixpoints after 6 different actions. Largest state had 132 variables. [2018-11-18 09:27:00,382 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:00,383 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 09:27:00,383 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 09:27:00,383 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_687330ff-d465-44be-82f4-d2aa82395e55/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 09:27:00,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:27:00,391 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 09:27:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:27:00,484 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:27:00,641 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-18 09:27:00,641 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:27:01,421 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-18 09:27:01,439 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-18 09:27:01,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [13, 9] total 25 [2018-11-18 09:27:01,440 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 09:27:01,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 09:27:01,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 09:27:01,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2018-11-18 09:27:01,441 INFO L87 Difference]: Start difference. First operand 1239 states and 1437 transitions. Second operand 8 states. [2018-11-18 09:27:01,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:27:01,681 INFO L93 Difference]: Finished difference Result 2921 states and 3436 transitions. [2018-11-18 09:27:01,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 09:27:01,682 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 153 [2018-11-18 09:27:01,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:27:01,687 INFO L225 Difference]: With dead ends: 2921 [2018-11-18 09:27:01,687 INFO L226 Difference]: Without dead ends: 1706 [2018-11-18 09:27:01,690 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 288 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2018-11-18 09:27:01,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2018-11-18 09:27:01,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1699. [2018-11-18 09:27:01,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1699 states. [2018-11-18 09:27:01,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 1951 transitions. [2018-11-18 09:27:01,747 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 1951 transitions. Word has length 153 [2018-11-18 09:27:01,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:27:01,747 INFO L480 AbstractCegarLoop]: Abstraction has 1699 states and 1951 transitions. [2018-11-18 09:27:01,747 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 09:27:01,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 1951 transitions. [2018-11-18 09:27:01,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-11-18 09:27:01,751 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:27:01,751 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:27:01,751 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:27:01,751 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:01,751 INFO L82 PathProgramCache]: Analyzing trace with hash 19002035, now seen corresponding path program 1 times [2018-11-18 09:27:01,752 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 09:27:01,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:01,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:27:01,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:01,753 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 09:27:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:27:01,817 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 09:27:01,817 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 09:27:01,817 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 09:27:01,817 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 146 with the following transitions: [2018-11-18 09:27:01,818 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [37], [38], [39], [41], [44], [48], [49], [50], [53], [55], [56], [57], [58], [59], [62], [64], [65], [68], [70], [73], [80], [83], [85], [89], [95], [99], [103], [109], [111], [117], [119], [122], [137], [138], [139], [140], [141], [142], [143], [145], [150], [153], [154], [155], [156], [158], [161], [165], [166], [174], [175], [205], [208], [212], [218], [221], [225], [226], [230], [233], [235], [238], [248], [256], [259], [260], [261], [262], [263], [265], [266], [267], [268], [269], [270], [271], [272], [273], [275], [276], [277], [279], [280], [281], [282], [283], [284], [287], [288], [293], [294], [297], [298], [299], [300], [301], [302], [307], [308], [309], [310], [311], [312], [313], [314], [315], [317], [318], [319], [320] [2018-11-18 09:27:01,820 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 09:27:01,821 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 09:27:02,366 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 09:27:02,366 INFO L272 AbstractInterpreter]: Visited 123 different actions 432 times. Merged at 17 different actions 34 times. Never widened. Performed 13490 root evaluator evaluations with a maximum evaluation depth of 5. Performed 13490 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 5 fixpoints after 2 different actions. Largest state had 132 variables. [2018-11-18 09:27:02,376 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:02,376 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 09:27:02,376 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 09:27:02,376 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_687330ff-d465-44be-82f4-d2aa82395e55/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 09:27:02,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:27:02,394 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 09:27:02,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:27:02,476 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:27:02,499 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-18 09:27:02,499 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:27:02,671 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 09:27:02,690 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-18 09:27:02,690 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 6 [2018-11-18 09:27:02,690 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 09:27:02,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 09:27:02,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 09:27:02,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-18 09:27:02,691 INFO L87 Difference]: Start difference. First operand 1699 states and 1951 transitions. Second operand 6 states. [2018-11-18 09:27:02,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:27:02,747 INFO L93 Difference]: Finished difference Result 3451 states and 4028 transitions. [2018-11-18 09:27:02,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 09:27:02,747 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-11-18 09:27:02,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:27:02,752 INFO L225 Difference]: With dead ends: 3451 [2018-11-18 09:27:02,752 INFO L226 Difference]: Without dead ends: 1776 [2018-11-18 09:27:02,755 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 287 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-18 09:27:02,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1776 states. [2018-11-18 09:27:02,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1776 to 1744. [2018-11-18 09:27:02,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1744 states. [2018-11-18 09:27:02,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1744 states to 1744 states and 1998 transitions. [2018-11-18 09:27:02,809 INFO L78 Accepts]: Start accepts. Automaton has 1744 states and 1998 transitions. Word has length 145 [2018-11-18 09:27:02,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:27:02,809 INFO L480 AbstractCegarLoop]: Abstraction has 1744 states and 1998 transitions. [2018-11-18 09:27:02,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 09:27:02,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1744 states and 1998 transitions. [2018-11-18 09:27:02,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-11-18 09:27:02,812 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:27:02,812 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:27:02,813 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:27:02,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:02,813 INFO L82 PathProgramCache]: Analyzing trace with hash -649346949, now seen corresponding path program 1 times [2018-11-18 09:27:02,813 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 09:27:02,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:02,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:27:02,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:02,814 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 09:27:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:27:02,899 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 09:27:02,900 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 09:27:02,900 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 09:27:02,900 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 150 with the following transitions: [2018-11-18 09:27:02,900 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [37], [38], [39], [41], [44], [48], [49], [50], [53], [55], [56], [57], [58], [59], [62], [64], [65], [68], [70], [73], [80], [83], [85], [89], [95], [99], [103], [106], [109], [111], [117], [119], [122], [137], [138], [139], [140], [141], [142], [143], [145], [150], [153], [154], [155], [156], [158], [163], [165], [166], [174], [175], [205], [208], [212], [218], [221], [225], [226], [230], [233], [235], [238], [248], [251], [255], [256], [259], [260], [261], [262], [263], [265], [266], [267], [268], [269], [270], [271], [272], [273], [275], [276], [277], [279], [280], [281], [282], [283], [284], [287], [288], [289], [290], [293], [294], [297], [298], [299], [300], [301], [302], [307], [308], [309], [310], [311], [312], [313], [314], [315], [317], [318], [319], [320] [2018-11-18 09:27:02,902 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 09:27:02,903 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 09:27:03,057 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-18 09:27:03,058 INFO L272 AbstractInterpreter]: Visited 58 different actions 82 times. Merged at 5 different actions 5 times. Never widened. Performed 4532 root evaluator evaluations with a maximum evaluation depth of 3. Performed 4532 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 132 variables. [2018-11-18 09:27:03,064 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:03,064 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-18 09:27:03,213 INFO L227 lantSequenceWeakener]: Weakened 68 states. On average, predicates are now at 96.61% of their original sizes. [2018-11-18 09:27:03,214 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-18 09:27:03,315 INFO L415 sIntCurrentIteration]: We unified 148 AI predicates to 148 [2018-11-18 09:27:03,315 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-18 09:27:03,315 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 09:27:03,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [8] total 24 [2018-11-18 09:27:03,316 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 09:27:03,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-18 09:27:03,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-18 09:27:03,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2018-11-18 09:27:03,317 INFO L87 Difference]: Start difference. First operand 1744 states and 1998 transitions. Second operand 18 states. [2018-11-18 09:27:05,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:27:05,999 INFO L93 Difference]: Finished difference Result 3268 states and 3758 transitions. [2018-11-18 09:27:05,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-18 09:27:05,999 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 149 [2018-11-18 09:27:06,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:27:06,004 INFO L225 Difference]: With dead ends: 3268 [2018-11-18 09:27:06,004 INFO L226 Difference]: Without dead ends: 1548 [2018-11-18 09:27:06,007 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 153 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2018-11-18 09:27:06,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2018-11-18 09:27:06,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1521. [2018-11-18 09:27:06,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1521 states. [2018-11-18 09:27:06,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 1734 transitions. [2018-11-18 09:27:06,056 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 1734 transitions. Word has length 149 [2018-11-18 09:27:06,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:27:06,057 INFO L480 AbstractCegarLoop]: Abstraction has 1521 states and 1734 transitions. [2018-11-18 09:27:06,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-18 09:27:06,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 1734 transitions. [2018-11-18 09:27:06,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-11-18 09:27:06,058 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:27:06,059 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:27:06,059 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:27:06,059 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:06,059 INFO L82 PathProgramCache]: Analyzing trace with hash 387443184, now seen corresponding path program 1 times [2018-11-18 09:27:06,059 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 09:27:06,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:06,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:27:06,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:06,060 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 09:27:06,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:27:06,129 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-18 09:27:06,129 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:27:06,129 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-18 09:27:06,129 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 09:27:06,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 09:27:06,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 09:27:06,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-18 09:27:06,130 INFO L87 Difference]: Start difference. First operand 1521 states and 1734 transitions. Second operand 6 states. [2018-11-18 09:27:06,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:27:06,180 INFO L93 Difference]: Finished difference Result 2218 states and 2565 transitions. [2018-11-18 09:27:06,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 09:27:06,181 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2018-11-18 09:27:06,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:27:06,185 INFO L225 Difference]: With dead ends: 2218 [2018-11-18 09:27:06,185 INFO L226 Difference]: Without dead ends: 1541 [2018-11-18 09:27:06,186 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-18 09:27:06,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2018-11-18 09:27:06,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 1541. [2018-11-18 09:27:06,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1541 states. [2018-11-18 09:27:06,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 1754 transitions. [2018-11-18 09:27:06,233 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 1754 transitions. Word has length 149 [2018-11-18 09:27:06,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:27:06,233 INFO L480 AbstractCegarLoop]: Abstraction has 1541 states and 1754 transitions. [2018-11-18 09:27:06,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 09:27:06,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 1754 transitions. [2018-11-18 09:27:06,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-11-18 09:27:06,235 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:27:06,235 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:27:06,235 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:27:06,236 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:06,236 INFO L82 PathProgramCache]: Analyzing trace with hash -122029906, now seen corresponding path program 1 times [2018-11-18 09:27:06,236 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 09:27:06,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:06,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:27:06,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:06,237 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 09:27:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:27:06,374 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-18 09:27:06,374 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:27:06,375 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-18 09:27:06,375 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 09:27:06,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 09:27:06,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 09:27:06,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-18 09:27:06,376 INFO L87 Difference]: Start difference. First operand 1541 states and 1754 transitions. Second operand 6 states. [2018-11-18 09:27:06,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:27:06,649 INFO L93 Difference]: Finished difference Result 1554 states and 1768 transitions. [2018-11-18 09:27:06,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 09:27:06,650 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2018-11-18 09:27:06,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:27:06,656 INFO L225 Difference]: With dead ends: 1554 [2018-11-18 09:27:06,656 INFO L226 Difference]: Without dead ends: 1551 [2018-11-18 09:27:06,657 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-18 09:27:06,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2018-11-18 09:27:06,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 1541. [2018-11-18 09:27:06,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1541 states. [2018-11-18 09:27:06,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 1752 transitions. [2018-11-18 09:27:06,736 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 1752 transitions. Word has length 149 [2018-11-18 09:27:06,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:27:06,737 INFO L480 AbstractCegarLoop]: Abstraction has 1541 states and 1752 transitions. [2018-11-18 09:27:06,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 09:27:06,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 1752 transitions. [2018-11-18 09:27:06,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-11-18 09:27:06,739 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:27:06,740 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:27:06,740 INFO L423 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:27:06,740 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:06,740 INFO L82 PathProgramCache]: Analyzing trace with hash 709015040, now seen corresponding path program 1 times [2018-11-18 09:27:06,740 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 09:27:06,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:06,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:27:06,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:06,741 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 09:27:06,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:27:06,890 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-18 09:27:06,890 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 09:27:06,890 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 09:27:06,890 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 154 with the following transitions: [2018-11-18 09:27:06,891 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [37], [38], [39], [41], [44], [48], [49], [50], [53], [55], [56], [59], [63], [64], [65], [68], [70], [76], [80], [83], [84], [85], [89], [95], [99], [103], [106], [109], [111], [117], [119], [122], [137], [138], [139], [140], [141], [142], [143], [145], [150], [153], [154], [155], [156], [158], [163], [165], [166], [174], [175], [205], [208], [212], [218], [221], [225], [226], [230], [233], [235], [238], [245], [248], [251], [255], [256], [259], [260], [261], [262], [263], [265], [266], [267], [268], [269], [270], [271], [272], [273], [275], [276], [277], [279], [280], [281], [282], [285], [286], [287], [288], [289], [290], [293], [294], [297], [298], [299], [300], [301], [302], [307], [308], [309], [310], [311], [312], [313], [314], [315], [317], [318], [319], [320], [323], [324] [2018-11-18 09:27:06,892 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 09:27:06,892 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 09:27:07,651 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 09:27:07,651 INFO L272 AbstractInterpreter]: Visited 130 different actions 593 times. Merged at 16 different actions 44 times. Never widened. Performed 18953 root evaluator evaluations with a maximum evaluation depth of 5. Performed 18953 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 9 fixpoints after 3 different actions. Largest state had 132 variables. [2018-11-18 09:27:07,656 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:07,657 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 09:27:07,657 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 09:27:07,657 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_687330ff-d465-44be-82f4-d2aa82395e55/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 09:27:07,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:27:07,664 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 09:27:07,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:27:07,742 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:27:07,799 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 17 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:27:07,799 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:27:08,004 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-18 09:27:08,022 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 09:27:08,022 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 17 [2018-11-18 09:27:08,023 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 09:27:08,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-18 09:27:08,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-18 09:27:08,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2018-11-18 09:27:08,024 INFO L87 Difference]: Start difference. First operand 1541 states and 1752 transitions. Second operand 14 states. [2018-11-18 09:27:09,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:27:09,674 INFO L93 Difference]: Finished difference Result 3014 states and 3782 transitions. [2018-11-18 09:27:09,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-18 09:27:09,675 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 153 [2018-11-18 09:27:09,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:27:09,685 INFO L225 Difference]: With dead ends: 3014 [2018-11-18 09:27:09,685 INFO L226 Difference]: Without dead ends: 2317 [2018-11-18 09:27:09,689 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 301 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=265, Invalid=995, Unknown=0, NotChecked=0, Total=1260 [2018-11-18 09:27:09,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2317 states. [2018-11-18 09:27:09,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2317 to 2112. [2018-11-18 09:27:09,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2112 states. [2018-11-18 09:27:09,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 2435 transitions. [2018-11-18 09:27:09,819 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 2435 transitions. Word has length 153 [2018-11-18 09:27:09,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:27:09,819 INFO L480 AbstractCegarLoop]: Abstraction has 2112 states and 2435 transitions. [2018-11-18 09:27:09,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-18 09:27:09,819 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 2435 transitions. [2018-11-18 09:27:09,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-11-18 09:27:09,825 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:27:09,825 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2018-11-18 09:27:09,825 INFO L423 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:27:09,825 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:09,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1116106736, now seen corresponding path program 1 times [2018-11-18 09:27:09,825 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 09:27:09,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:09,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:27:09,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:09,827 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 09:27:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:27:10,013 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 41 proven. 8 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-11-18 09:27:10,013 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 09:27:10,013 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 09:27:10,014 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 208 with the following transitions: [2018-11-18 09:27:10,014 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [37], [38], [39], [41], [44], [46], [48], [49], [50], [53], [55], [56], [59], [63], [64], [65], [68], [70], [76], [80], [83], [84], [85], [89], [95], [99], [103], [106], [109], [111], [117], [119], [122], [137], [138], [139], [140], [141], [142], [143], [145], [150], [153], [154], [155], [156], [158], [163], [165], [166], [174], [175], [205], [208], [212], [218], [221], [225], [226], [230], [233], [235], [238], [245], [248], [251], [255], [256], [259], [260], [261], [262], [263], [265], [266], [267], [268], [269], [270], [271], [272], [273], [275], [276], [277], [279], [280], [281], [282], [285], [286], [287], [288], [289], [290], [293], [294], [297], [298], [299], [300], [301], [302], [307], [308], [309], [310], [311], [312], [313], [314], [315], [317], [318], [319], [320], [323], [324] [2018-11-18 09:27:10,015 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 09:27:10,015 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 09:27:10,688 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 09:27:10,688 INFO L272 AbstractInterpreter]: Visited 131 different actions 605 times. Merged at 19 different actions 53 times. Never widened. Performed 18855 root evaluator evaluations with a maximum evaluation depth of 5. Performed 18855 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 12 fixpoints after 4 different actions. Largest state had 132 variables. [2018-11-18 09:27:10,692 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:10,692 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 09:27:10,693 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 09:27:10,693 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_687330ff-d465-44be-82f4-d2aa82395e55/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 09:27:10,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:27:10,701 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 09:27:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:27:10,778 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:27:10,840 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-11-18 09:27:10,840 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:27:11,027 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 41 proven. 8 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-11-18 09:27:11,054 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-18 09:27:11,054 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [9, 6] total 13 [2018-11-18 09:27:11,054 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 09:27:11,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 09:27:11,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 09:27:11,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2018-11-18 09:27:11,055 INFO L87 Difference]: Start difference. First operand 2112 states and 2435 transitions. Second operand 6 states. [2018-11-18 09:27:11,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:27:11,130 INFO L93 Difference]: Finished difference Result 3254 states and 3808 transitions. [2018-11-18 09:27:11,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 09:27:11,131 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 207 [2018-11-18 09:27:11,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:27:11,136 INFO L225 Difference]: With dead ends: 3254 [2018-11-18 09:27:11,136 INFO L226 Difference]: Without dead ends: 1986 [2018-11-18 09:27:11,139 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 409 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2018-11-18 09:27:11,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1986 states. [2018-11-18 09:27:11,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1986 to 1986. [2018-11-18 09:27:11,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1986 states. [2018-11-18 09:27:11,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1986 states to 1986 states and 2284 transitions. [2018-11-18 09:27:11,198 INFO L78 Accepts]: Start accepts. Automaton has 1986 states and 2284 transitions. Word has length 207 [2018-11-18 09:27:11,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:27:11,198 INFO L480 AbstractCegarLoop]: Abstraction has 1986 states and 2284 transitions. [2018-11-18 09:27:11,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 09:27:11,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1986 states and 2284 transitions. [2018-11-18 09:27:11,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-11-18 09:27:11,202 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:27:11,202 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-11-18 09:27:11,202 INFO L423 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:27:11,203 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:11,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1794685986, now seen corresponding path program 1 times [2018-11-18 09:27:11,203 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 09:27:11,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:11,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:27:11,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:11,204 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 09:27:11,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:27:11,288 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 76 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-11-18 09:27:11,289 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 09:27:11,289 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 09:27:11,289 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 271 with the following transitions: [2018-11-18 09:27:11,289 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [37], [38], [39], [41], [44], [46], [48], [49], [50], [53], [55], [56], [57], [58], [59], [62], [63], [64], [65], [68], [70], [73], [76], [80], [83], [84], [85], [89], [95], [99], [103], [106], [109], [111], [117], [119], [122], [137], [138], [139], [140], [141], [142], [143], [145], [150], [153], [154], [155], [156], [158], [163], [165], [166], [174], [175], [205], [208], [212], [218], [221], [225], [226], [230], [233], [235], [238], [245], [248], [251], [255], [256], [259], [260], [261], [262], [263], [265], [266], [267], [268], [269], [270], [271], [272], [273], [275], [276], [277], [279], [280], [281], [282], [283], [284], [285], [286], [287], [288], [289], [290], [293], [294], [297], [298], [299], [300], [301], [302], [307], [308], [309], [310], [311], [312], [313], [314], [315], [317], [318], [319], [320], [323], [324] [2018-11-18 09:27:11,291 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 09:27:11,291 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 09:27:12,239 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 09:27:12,239 INFO L272 AbstractInterpreter]: Visited 137 different actions 744 times. Merged at 27 different actions 99 times. Never widened. Performed 27928 root evaluator evaluations with a maximum evaluation depth of 5. Performed 27928 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 15 fixpoints after 4 different actions. Largest state had 132 variables. [2018-11-18 09:27:12,244 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:12,244 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 09:27:12,245 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 09:27:12,245 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_687330ff-d465-44be-82f4-d2aa82395e55/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 09:27:12,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:27:12,252 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 09:27:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:27:12,340 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:27:12,416 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-11-18 09:27:12,416 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:27:12,758 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 76 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-11-18 09:27:12,785 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-18 09:27:12,786 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 5] total 11 [2018-11-18 09:27:12,786 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 09:27:12,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 09:27:12,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 09:27:12,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-11-18 09:27:12,787 INFO L87 Difference]: Start difference. First operand 1986 states and 2284 transitions. Second operand 5 states. [2018-11-18 09:27:12,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:27:12,886 INFO L93 Difference]: Finished difference Result 3175 states and 3638 transitions. [2018-11-18 09:27:12,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 09:27:12,886 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 270 [2018-11-18 09:27:12,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:27:12,887 INFO L225 Difference]: With dead ends: 3175 [2018-11-18 09:27:12,888 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 09:27:12,893 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 537 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-11-18 09:27:12,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 09:27:12,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 09:27:12,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 09:27:12,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 09:27:12,894 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 270 [2018-11-18 09:27:12,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:27:12,894 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 09:27:12,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 09:27:12,895 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 09:27:12,895 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 09:27:12,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 09:27:13,060 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,064 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,066 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,084 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,106 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,200 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,203 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,204 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,204 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,205 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,205 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,206 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,207 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,207 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,208 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,209 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,209 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,276 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,276 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,304 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,304 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,317 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,318 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,375 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,381 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,382 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,382 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,383 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,384 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,385 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,385 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,387 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,389 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,395 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,395 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,396 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,396 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,397 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,397 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,398 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,398 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,399 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,401 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:13,402 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 09:27:14,344 WARN L180 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 34 [2018-11-18 09:27:14,523 WARN L180 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 23 [2018-11-18 09:27:14,687 WARN L180 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 34 [2018-11-18 09:27:15,013 WARN L180 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 20 [2018-11-18 09:27:15,339 WARN L180 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 23 [2018-11-18 09:27:15,703 WARN L180 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 26 [2018-11-18 09:27:16,615 WARN L180 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 17 [2018-11-18 09:27:16,646 INFO L428 ceAbstractionStarter]: At program point select_helpersFINAL(lines 486 492) the Hoare annotation is: true [2018-11-18 09:27:16,646 INFO L425 ceAbstractionStarter]: For program point select_helpersEXIT(lines 486 492) no Hoare annotation was computed. [2018-11-18 09:27:16,646 INFO L425 ceAbstractionStarter]: For program point valid_productEXIT(lines 493 501) no Hoare annotation was computed. [2018-11-18 09:27:16,646 INFO L428 ceAbstractionStarter]: At program point valid_productENTRY(lines 493 501) the Hoare annotation is: true [2018-11-18 09:27:16,646 INFO L425 ceAbstractionStarter]: For program point valid_productFINAL(lines 493 501) no Hoare annotation was computed. [2018-11-18 09:27:16,646 INFO L428 ceAbstractionStarter]: At program point __utac_acc__Specification4_spec__1ENTRY(lines 336 360) the Hoare annotation is: true [2018-11-18 09:27:16,647 INFO L421 ceAbstractionStarter]: At program point L350(line 350) the Hoare annotation is: (let ((.cse0 (not (= ~systemActive~0 1)))) (and (or (not (= 0 ~pumpRunning~0)) (< ~waterLevel~0 1) .cse0) (or (< ~waterLevel~0 2) .cse0))) [2018-11-18 09:27:16,647 INFO L425 ceAbstractionStarter]: For program point L348(lines 348 354) no Hoare annotation was computed. [2018-11-18 09:27:16,647 INFO L421 ceAbstractionStarter]: At program point L346(line 346) the Hoare annotation is: (let ((.cse0 (not (= ~systemActive~0 1)))) (and (or (not (= 0 ~pumpRunning~0)) (< ~waterLevel~0 1) .cse0) (or (< ~waterLevel~0 2) .cse0))) [2018-11-18 09:27:16,647 INFO L425 ceAbstractionStarter]: For program point L346-1(line 346) no Hoare annotation was computed. [2018-11-18 09:27:16,647 INFO L425 ceAbstractionStarter]: For program point L344(lines 344 357) no Hoare annotation was computed. [2018-11-18 09:27:16,647 INFO L425 ceAbstractionStarter]: For program point L344-1(lines 336 360) no Hoare annotation was computed. [2018-11-18 09:27:16,647 INFO L428 ceAbstractionStarter]: At program point L342(line 342) the Hoare annotation is: true [2018-11-18 09:27:16,647 INFO L425 ceAbstractionStarter]: For program point L342-1(line 342) no Hoare annotation was computed. [2018-11-18 09:27:16,647 INFO L425 ceAbstractionStarter]: For program point __utac_acc__Specification4_spec__1EXIT(lines 336 360) no Hoare annotation was computed. [2018-11-18 09:27:16,647 INFO L421 ceAbstractionStarter]: At program point mainENTRY(lines 575 597) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (not (= ~systemActive~0 1)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0)) (and (= ~methaneLevelCritical~0 0) (= ~waterLevel~0 |old(~waterLevel~0)|) (= |old(~pumpRunning~0)| ~pumpRunning~0))) [2018-11-18 09:27:16,647 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 575 597) no Hoare annotation was computed. [2018-11-18 09:27:16,647 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 575 597) no Hoare annotation was computed. [2018-11-18 09:27:16,648 INFO L421 ceAbstractionStarter]: At program point L587(line 587) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (not (= ~systemActive~0 1)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0)) (and (= ~methaneLevelCritical~0 0) (= ~waterLevel~0 |old(~waterLevel~0)|) (= main_~tmp~7 ~systemActive~0) (= |old(~pumpRunning~0)| ~pumpRunning~0))) [2018-11-18 09:27:16,648 INFO L421 ceAbstractionStarter]: At program point L587-1(line 587) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (not (= ~systemActive~0 1)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0)) (and (= ~methaneLevelCritical~0 0) (= ~waterLevel~0 |old(~waterLevel~0)|) (= main_~tmp~7 ~systemActive~0) (= |old(~pumpRunning~0)| ~pumpRunning~0))) [2018-11-18 09:27:16,648 INFO L425 ceAbstractionStarter]: For program point L585(lines 585 592) no Hoare annotation was computed. [2018-11-18 09:27:16,648 INFO L425 ceAbstractionStarter]: For program point L585-1(lines 585 592) no Hoare annotation was computed. [2018-11-18 09:27:16,648 INFO L425 ceAbstractionStarter]: For program point L583(line 583) no Hoare annotation was computed. [2018-11-18 09:27:16,648 INFO L421 ceAbstractionStarter]: At program point L582(line 582) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (not (= ~systemActive~0 1)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0)) (and (= ~methaneLevelCritical~0 0) (= ~waterLevel~0 |old(~waterLevel~0)|) (= |old(~pumpRunning~0)| ~pumpRunning~0))) [2018-11-18 09:27:16,648 INFO L421 ceAbstractionStarter]: At program point L581(line 581) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (not (= ~systemActive~0 1)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0)) (and (= ~methaneLevelCritical~0 0) (= ~waterLevel~0 |old(~waterLevel~0)|) (= |old(~pumpRunning~0)| ~pumpRunning~0))) [2018-11-18 09:27:16,648 INFO L421 ceAbstractionStarter]: At program point L581-1(line 581) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (not (= ~systemActive~0 1)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0)) (and (= ~methaneLevelCritical~0 0) (= ~waterLevel~0 |old(~waterLevel~0)|) (= |old(~pumpRunning~0)| ~pumpRunning~0))) [2018-11-18 09:27:16,648 INFO L425 ceAbstractionStarter]: For program point isPumpRunningEXIT(lines 250 258) no Hoare annotation was computed. [2018-11-18 09:27:16,649 INFO L428 ceAbstractionStarter]: At program point isPumpRunningENTRY(lines 250 258) the Hoare annotation is: true [2018-11-18 09:27:16,649 INFO L425 ceAbstractionStarter]: For program point isPumpRunningFINAL(lines 250 258) no Hoare annotation was computed. [2018-11-18 09:27:16,649 INFO L428 ceAbstractionStarter]: At program point L321(line 321) the Hoare annotation is: true [2018-11-18 09:27:16,649 INFO L425 ceAbstractionStarter]: For program point L323-2(lines 323 327) no Hoare annotation was computed. [2018-11-18 09:27:16,649 INFO L425 ceAbstractionStarter]: For program point L321-1(line 321) no Hoare annotation was computed. [2018-11-18 09:27:16,649 INFO L428 ceAbstractionStarter]: At program point isLowWaterLevelENTRY(lines 314 332) the Hoare annotation is: true [2018-11-18 09:27:16,649 INFO L425 ceAbstractionStarter]: For program point isLowWaterLevelEXIT(lines 314 332) no Hoare annotation was computed. [2018-11-18 09:27:16,649 INFO L425 ceAbstractionStarter]: For program point L323(lines 323 327) no Hoare annotation was computed. [2018-11-18 09:27:16,649 INFO L425 ceAbstractionStarter]: For program point isLowWaterLevelFINAL(lines 314 332) no Hoare annotation was computed. [2018-11-18 09:27:16,649 INFO L425 ceAbstractionStarter]: For program point select_featuresEXIT(lines 479 485) no Hoare annotation was computed. [2018-11-18 09:27:16,649 INFO L428 ceAbstractionStarter]: At program point select_featuresFINAL(lines 479 485) the Hoare annotation is: true [2018-11-18 09:27:16,649 INFO L421 ceAbstractionStarter]: At program point runTestENTRY(lines 565 574) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (not (= ~systemActive~0 1)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0)) (and (= ~methaneLevelCritical~0 0) (= ~waterLevel~0 |old(~waterLevel~0)|) (= |old(~pumpRunning~0)| ~pumpRunning~0))) [2018-11-18 09:27:16,649 INFO L425 ceAbstractionStarter]: For program point runTestEXIT(lines 565 574) no Hoare annotation was computed. [2018-11-18 09:27:16,650 INFO L425 ceAbstractionStarter]: For program point runTestFINAL(lines 565 574) no Hoare annotation was computed. [2018-11-18 09:27:16,650 INFO L428 ceAbstractionStarter]: At program point isMethaneAlarmENTRY(lines 239 249) the Hoare annotation is: true [2018-11-18 09:27:16,650 INFO L425 ceAbstractionStarter]: For program point isMethaneAlarmEXIT(lines 239 249) no Hoare annotation was computed. [2018-11-18 09:27:16,650 INFO L425 ceAbstractionStarter]: For program point isMethaneAlarmFINAL(lines 239 249) no Hoare annotation was computed. [2018-11-18 09:27:16,650 INFO L428 ceAbstractionStarter]: At program point L244(line 244) the Hoare annotation is: true [2018-11-18 09:27:16,650 INFO L425 ceAbstractionStarter]: For program point L244-1(line 244) no Hoare annotation was computed. [2018-11-18 09:27:16,650 INFO L421 ceAbstractionStarter]: At program point deactivatePumpENTRY(lines 231 238) the Hoare annotation is: (or (= |old(~pumpRunning~0)| ~pumpRunning~0) (< ~waterLevel~0 1) (= |old(~pumpRunning~0)| 0) (not (= ~systemActive~0 1))) [2018-11-18 09:27:16,650 INFO L425 ceAbstractionStarter]: For program point deactivatePumpEXIT(lines 231 238) no Hoare annotation was computed. [2018-11-18 09:27:16,650 INFO L425 ceAbstractionStarter]: For program point deactivatePumpFINAL(lines 231 238) no Hoare annotation was computed. [2018-11-18 09:27:16,650 INFO L425 ceAbstractionStarter]: For program point L445(lines 445 451) no Hoare annotation was computed. [2018-11-18 09:27:16,650 INFO L425 ceAbstractionStarter]: For program point isHighWaterSensorDryEXIT(lines 441 454) no Hoare annotation was computed. [2018-11-18 09:27:16,650 INFO L428 ceAbstractionStarter]: At program point isHighWaterSensorDryENTRY(lines 441 454) the Hoare annotation is: true [2018-11-18 09:27:16,650 INFO L425 ceAbstractionStarter]: For program point isHighWaterSensorDryFINAL(lines 441 454) no Hoare annotation was computed. [2018-11-18 09:27:16,651 INFO L421 ceAbstractionStarter]: At program point L190(line 190) the Hoare annotation is: (let ((.cse0 (< ~waterLevel~0 1)) (.cse1 (not (= ~systemActive~0 1)))) (and (or (and (<= 1 processEnvironment_~tmp~2) (= |old(~pumpRunning~0)| ~pumpRunning~0)) .cse0 .cse1) (or (not (= 0 |old(~pumpRunning~0)|)) .cse0 .cse1))) [2018-11-18 09:27:16,651 INFO L425 ceAbstractionStarter]: For program point L188(lines 188 196) no Hoare annotation was computed. [2018-11-18 09:27:16,651 INFO L421 ceAbstractionStarter]: At program point L186(line 186) the Hoare annotation is: (let ((.cse0 (< ~waterLevel~0 1)) (.cse1 (not (= ~systemActive~0 1)))) (and (or (not (= 0 |old(~pumpRunning~0)|)) .cse0 .cse1) (or (= |old(~pumpRunning~0)| ~pumpRunning~0) .cse0 .cse1))) [2018-11-18 09:27:16,651 INFO L425 ceAbstractionStarter]: For program point L186-1(line 186) no Hoare annotation was computed. [2018-11-18 09:27:16,651 INFO L425 ceAbstractionStarter]: For program point L184(lines 184 201) no Hoare annotation was computed. [2018-11-18 09:27:16,651 INFO L425 ceAbstractionStarter]: For program point processEnvironmentEXIT(lines 180 204) no Hoare annotation was computed. [2018-11-18 09:27:16,651 INFO L421 ceAbstractionStarter]: At program point processEnvironmentENTRY(lines 180 204) the Hoare annotation is: (or (= |old(~pumpRunning~0)| ~pumpRunning~0) (< ~waterLevel~0 1) (not (= ~systemActive~0 1))) [2018-11-18 09:27:16,651 INFO L421 ceAbstractionStarter]: At program point L199(line 199) the Hoare annotation is: (let ((.cse0 (< ~waterLevel~0 1)) (.cse1 (not (= ~systemActive~0 1)))) (and (or .cse0 .cse1 (= |old(~pumpRunning~0)| ~pumpRunning~0)) (or .cse0 (= |old(~pumpRunning~0)| 0) .cse1))) [2018-11-18 09:27:16,651 INFO L425 ceAbstractionStarter]: For program point L199-1(lines 180 204) no Hoare annotation was computed. [2018-11-18 09:27:16,651 INFO L421 ceAbstractionStarter]: At program point L194(line 194) the Hoare annotation is: (or (< ~waterLevel~0 1) (not (= ~systemActive~0 1))) [2018-11-18 09:27:16,651 INFO L425 ceAbstractionStarter]: For program point processEnvironment__wrappee__baseEXIT(lines 146 152) no Hoare annotation was computed. [2018-11-18 09:27:16,651 INFO L428 ceAbstractionStarter]: At program point processEnvironment__wrappee__baseFINAL(lines 146 152) the Hoare annotation is: true [2018-11-18 09:27:16,652 INFO L421 ceAbstractionStarter]: At program point L97(lines 54 99) the Hoare annotation is: (let ((.cse0 (= test_~splverifierCounter~0 0))) (or (and (= 0 ~pumpRunning~0) (<= 1 ~waterLevel~0) .cse0) (not (= 0 |old(~pumpRunning~0)|)) (and (<= 2 ~waterLevel~0) .cse0) (not (= ~systemActive~0 1)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0)))) [2018-11-18 09:27:16,658 INFO L425 ceAbstractionStarter]: For program point L64(lines 64 70) no Hoare annotation was computed. [2018-11-18 09:27:16,658 INFO L421 ceAbstractionStarter]: At program point testENTRY(lines 44 107) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (not (= ~systemActive~0 1)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0)) (and (= ~methaneLevelCritical~0 0) (= ~waterLevel~0 |old(~waterLevel~0)|) (= |old(~pumpRunning~0)| ~pumpRunning~0))) [2018-11-18 09:27:16,658 INFO L425 ceAbstractionStarter]: For program point L64-1(lines 64 70) no Hoare annotation was computed. [2018-11-18 09:27:16,658 INFO L425 ceAbstractionStarter]: For program point L56(lines 56 60) no Hoare annotation was computed. [2018-11-18 09:27:16,658 INFO L425 ceAbstractionStarter]: For program point testFINAL(lines 44 107) no Hoare annotation was computed. [2018-11-18 09:27:16,659 INFO L425 ceAbstractionStarter]: For program point L54-1(lines 54 99) no Hoare annotation was computed. [2018-11-18 09:27:16,659 INFO L421 ceAbstractionStarter]: At program point L100(lines 53 101) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (not (= ~systemActive~0 1)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-11-18 09:27:16,659 INFO L425 ceAbstractionStarter]: For program point L90(lines 90 94) no Hoare annotation was computed. [2018-11-18 09:27:16,659 INFO L421 ceAbstractionStarter]: At program point L90-2(lines 84 95) the Hoare annotation is: (let ((.cse0 (= test_~splverifierCounter~0 0))) (or (and (= 0 ~pumpRunning~0) (<= 1 ~waterLevel~0) .cse0) (not (= 0 |old(~pumpRunning~0)|)) (and (<= 2 ~waterLevel~0) .cse0) (not (= ~systemActive~0 1)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0)))) [2018-11-18 09:27:16,659 INFO L425 ceAbstractionStarter]: For program point L55(lines 54 99) no Hoare annotation was computed. [2018-11-18 09:27:16,659 INFO L425 ceAbstractionStarter]: For program point L84(lines 84 95) no Hoare annotation was computed. [2018-11-18 09:27:16,659 INFO L421 ceAbstractionStarter]: At program point L76(line 76) the Hoare annotation is: (let ((.cse0 (= test_~splverifierCounter~0 0))) (or (and (= 0 ~pumpRunning~0) (<= 1 ~waterLevel~0) .cse0) (not (= 0 |old(~pumpRunning~0)|)) (and (<= 2 ~waterLevel~0) .cse0) (not (= ~systemActive~0 1)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0)))) [2018-11-18 09:27:16,659 INFO L425 ceAbstractionStarter]: For program point L74(lines 74 80) no Hoare annotation was computed. [2018-11-18 09:27:16,659 INFO L425 ceAbstractionStarter]: For program point L74-1(lines 74 80) no Hoare annotation was computed. [2018-11-18 09:27:16,659 INFO L425 ceAbstractionStarter]: For program point testEXIT(lines 44 107) no Hoare annotation was computed. [2018-11-18 09:27:16,659 INFO L421 ceAbstractionStarter]: At program point L66(line 66) the Hoare annotation is: (let ((.cse0 (= test_~splverifierCounter~0 0))) (or (and (= 0 ~pumpRunning~0) (<= 1 ~waterLevel~0) .cse0) (not (= ~systemActive~0 1)) (not (= 0 |old(~pumpRunning~0)|)) (and (<= 2 ~waterLevel~0) .cse0) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0)))) [2018-11-18 09:27:16,659 INFO L421 ceAbstractionStarter]: At program point activatePump__wrappee__lowWaterSensorENTRY(lines 205 212) the Hoare annotation is: (or (= |old(~pumpRunning~0)| ~pumpRunning~0) (or (not (= 0 |old(~pumpRunning~0)|)) (not (= ~systemActive~0 1))) (< ~waterLevel~0 2)) [2018-11-18 09:27:16,660 INFO L425 ceAbstractionStarter]: For program point activatePump__wrappee__lowWaterSensorFINAL(lines 205 212) no Hoare annotation was computed. [2018-11-18 09:27:16,660 INFO L425 ceAbstractionStarter]: For program point activatePump__wrappee__lowWaterSensorEXIT(lines 205 212) no Hoare annotation was computed. [2018-11-18 09:27:16,660 INFO L425 ceAbstractionStarter]: For program point isLowWaterSensorDryFINAL(lines 455 463) no Hoare annotation was computed. [2018-11-18 09:27:16,660 INFO L428 ceAbstractionStarter]: At program point isLowWaterSensorDryENTRY(lines 455 463) the Hoare annotation is: true [2018-11-18 09:27:16,660 INFO L425 ceAbstractionStarter]: For program point isLowWaterSensorDryEXIT(lines 455 463) no Hoare annotation was computed. [2018-11-18 09:27:16,660 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 09:27:16,660 INFO L421 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~waterLevel~0 |old(~waterLevel~0)|) (= |old(~pumpRunning~0)| ~pumpRunning~0)) [2018-11-18 09:27:16,660 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 09:27:16,660 INFO L421 ceAbstractionStarter]: At program point L225(line 225) 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 .cse0 (= |old(~pumpRunning~0)| ~pumpRunning~0) .cse1 .cse2))) [2018-11-18 09:27:16,660 INFO L425 ceAbstractionStarter]: For program point L225-1(lines 214 230) no Hoare annotation was computed. [2018-11-18 09:27:16,660 INFO L425 ceAbstractionStarter]: For program point L221(lines 221 227) no Hoare annotation was computed. [2018-11-18 09:27:16,660 INFO L425 ceAbstractionStarter]: For program point activatePumpEXIT(lines 214 230) no Hoare annotation was computed. [2018-11-18 09:27:16,660 INFO L421 ceAbstractionStarter]: At program point L219(line 219) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (= |old(~pumpRunning~0)| ~pumpRunning~0) (< ~waterLevel~0 2) (not (= ~systemActive~0 1))) [2018-11-18 09:27:16,660 INFO L425 ceAbstractionStarter]: For program point L219-1(line 219) no Hoare annotation was computed. [2018-11-18 09:27:16,661 INFO L421 ceAbstractionStarter]: At program point activatePumpENTRY(lines 214 230) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (= |old(~pumpRunning~0)| ~pumpRunning~0) (< ~waterLevel~0 2) (not (= ~systemActive~0 1))) [2018-11-18 09:27:16,661 INFO L428 ceAbstractionStarter]: At program point getWaterLevelENTRY(lines 432 440) the Hoare annotation is: true [2018-11-18 09:27:16,661 INFO L425 ceAbstractionStarter]: For program point getWaterLevelFINAL(lines 432 440) no Hoare annotation was computed. [2018-11-18 09:27:16,661 INFO L425 ceAbstractionStarter]: For program point getWaterLevelEXIT(lines 432 440) no Hoare annotation was computed. [2018-11-18 09:27:16,661 INFO L425 ceAbstractionStarter]: For program point isHighWaterLevelEXIT(lines 295 313) no Hoare annotation was computed. [2018-11-18 09:27:16,661 INFO L425 ceAbstractionStarter]: For program point L304(lines 304 308) no Hoare annotation was computed. [2018-11-18 09:27:16,661 INFO L428 ceAbstractionStarter]: At program point L302(line 302) the Hoare annotation is: true [2018-11-18 09:27:16,661 INFO L425 ceAbstractionStarter]: For program point L304-2(lines 304 308) no Hoare annotation was computed. [2018-11-18 09:27:16,661 INFO L425 ceAbstractionStarter]: For program point L302-1(line 302) no Hoare annotation was computed. [2018-11-18 09:27:16,661 INFO L428 ceAbstractionStarter]: At program point isHighWaterLevelENTRY(lines 295 313) the Hoare annotation is: true [2018-11-18 09:27:16,661 INFO L425 ceAbstractionStarter]: For program point isHighWaterLevelFINAL(lines 295 313) no Hoare annotation was computed. [2018-11-18 09:27:16,661 INFO L421 ceAbstractionStarter]: At program point changeMethaneLevelENTRY(lines 388 399) the Hoare annotation is: (let ((.cse0 (not (= 0 ~pumpRunning~0))) (.cse3 (= ~methaneLevelCritical~0 0)) (.cse1 (not (= ~systemActive~0 1))) (.cse2 (not (= |old(~methaneLevelCritical~0)| 0))) (.cse4 (not (= ~waterLevel~0 2)))) (and (or .cse0 .cse1 (not (= ~waterLevel~0 1)) .cse2 .cse3) (or (or (not (= |old(~methaneLevelCritical~0)| 1)) .cse4) (or .cse3 (= ~methaneLevelCritical~0 1)) .cse1) (or (< |old(~methaneLevelCritical~0)| 1) .cse0 (< ~waterLevel~0 1) .cse1 (<= 1 ~methaneLevelCritical~0)) (or .cse3 .cse1 .cse2 .cse4))) [2018-11-18 09:27:16,661 INFO L425 ceAbstractionStarter]: For program point L392-1(lines 388 399) no Hoare annotation was computed. [2018-11-18 09:27:16,662 INFO L425 ceAbstractionStarter]: For program point changeMethaneLevelEXIT(lines 388 399) no Hoare annotation was computed. [2018-11-18 09:27:16,662 INFO L428 ceAbstractionStarter]: At program point isMethaneLevelCriticalENTRY(lines 400 408) the Hoare annotation is: true [2018-11-18 09:27:16,662 INFO L425 ceAbstractionStarter]: For program point isMethaneLevelCriticalFINAL(lines 400 408) no Hoare annotation was computed. [2018-11-18 09:27:16,662 INFO L425 ceAbstractionStarter]: For program point isMethaneLevelCriticalEXIT(lines 400 408) no Hoare annotation was computed. [2018-11-18 09:27:16,662 INFO L425 ceAbstractionStarter]: For program point L514-1(lines 514 528) no Hoare annotation was computed. [2018-11-18 09:27:16,662 INFO L425 ceAbstractionStarter]: For program point cleanupEXIT(lines 504 533) no Hoare annotation was computed. [2018-11-18 09:27:16,662 INFO L428 ceAbstractionStarter]: At program point L514-3(lines 514 528) the Hoare annotation is: true [2018-11-18 09:27:16,662 INFO L428 ceAbstractionStarter]: At program point L510(line 510) the Hoare annotation is: true [2018-11-18 09:27:16,662 INFO L425 ceAbstractionStarter]: For program point L510-1(line 510) no Hoare annotation was computed. [2018-11-18 09:27:16,662 INFO L428 ceAbstractionStarter]: At program point L529(lines 504 533) the Hoare annotation is: true [2018-11-18 09:27:16,662 INFO L425 ceAbstractionStarter]: For program point L525(line 525) no Hoare annotation was computed. [2018-11-18 09:27:16,662 INFO L425 ceAbstractionStarter]: For program point L515(line 515) no Hoare annotation was computed. [2018-11-18 09:27:16,662 INFO L428 ceAbstractionStarter]: At program point cleanupENTRY(lines 504 533) the Hoare annotation is: true [2018-11-18 09:27:16,662 INFO L425 ceAbstractionStarter]: For program point L518(lines 518 522) no Hoare annotation was computed. [2018-11-18 09:27:16,662 INFO L428 ceAbstractionStarter]: At program point L518-1(lines 518 522) the Hoare annotation is: true [2018-11-18 09:27:16,663 INFO L421 ceAbstractionStarter]: At program point L128(line 128) the Hoare annotation is: (let ((.cse0 (not (= ~systemActive~0 1)))) (and (or (or (< |old(~waterLevel~0)| 2) .cse0) (and (= ~waterLevel~0 |old(~waterLevel~0)|) (= |old(~pumpRunning~0)| ~pumpRunning~0))) (or (not (= 0 |old(~pumpRunning~0)|)) (< |old(~waterLevel~0)| 1) .cse0))) [2018-11-18 09:27:16,663 INFO L425 ceAbstractionStarter]: For program point L126(lines 125 144) no Hoare annotation was computed. [2018-11-18 09:27:16,663 INFO L421 ceAbstractionStarter]: At program point timeShiftENTRY(lines 122 145) the Hoare annotation is: (let ((.cse1 (not (= ~systemActive~0 1))) (.cse0 (and (= ~waterLevel~0 |old(~waterLevel~0)|) (= |old(~pumpRunning~0)| ~pumpRunning~0)))) (and (or .cse0 (or (< |old(~waterLevel~0)| 2) .cse1)) (or (not (= 0 |old(~pumpRunning~0)|)) (< |old(~waterLevel~0)| 1) .cse1 .cse0))) [2018-11-18 09:27:16,663 INFO L425 ceAbstractionStarter]: For program point timeShiftEXIT(lines 122 145) no Hoare annotation was computed. [2018-11-18 09:27:16,663 INFO L421 ceAbstractionStarter]: At program point L135(line 135) the Hoare annotation is: (let ((.cse1 (= |old(~pumpRunning~0)| ~pumpRunning~0)) (.cse0 (not (= ~systemActive~0 1)))) (and (or (not (= 0 |old(~pumpRunning~0)|)) (< |old(~waterLevel~0)| 1) .cse0 (and (= ~waterLevel~0 |old(~waterLevel~0)|) .cse1)) (or (and (<= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) .cse1) (or (< |old(~waterLevel~0)| 2) .cse0)))) [2018-11-18 09:27:16,663 INFO L425 ceAbstractionStarter]: For program point timeShiftFINAL(lines 122 145) no Hoare annotation was computed. [2018-11-18 09:27:16,663 INFO L421 ceAbstractionStarter]: At program point L133(lines 133 139) the Hoare annotation is: (let ((.cse4 (= ~waterLevel~0 |old(~waterLevel~0)|)) (.cse5 (= ~systemActive~0 1))) (let ((.cse0 (= 0 ~pumpRunning~0)) (.cse2 (< |old(~waterLevel~0)| 2)) (.cse1 (and (<= 2 ~waterLevel~0) .cse4 .cse5)) (.cse3 (not .cse5))) (and (or (and .cse0 (<= |old(~waterLevel~0)| (+ ~waterLevel~0 1))) .cse1 (or .cse2 .cse3)) (or .cse0 (or (< ~methaneLevelCritical~0 1) .cse2 .cse3)) (or (not (= 0 |old(~pumpRunning~0)|)) .cse1 (< |old(~waterLevel~0)| 1) .cse3 (and .cse4 (= |old(~pumpRunning~0)| ~pumpRunning~0)))))) [2018-11-18 09:27:16,663 INFO L425 ceAbstractionStarter]: For program point L368-1(lines 364 375) no Hoare annotation was computed. [2018-11-18 09:27:16,663 INFO L421 ceAbstractionStarter]: At program point lowerWaterLevelENTRY(lines 364 375) the Hoare annotation is: (or (or (= ~pumpRunning~0 0) (< |old(~waterLevel~0)| 2) (not (= ~systemActive~0 1))) (= ~waterLevel~0 |old(~waterLevel~0)|)) [2018-11-18 09:27:16,663 INFO L425 ceAbstractionStarter]: For program point lowerWaterLevelEXIT(lines 364 375) no Hoare annotation was computed. [2018-11-18 09:27:16,663 INFO L425 ceAbstractionStarter]: For program point setupEXIT(lines 558 564) no Hoare annotation was computed. [2018-11-18 09:27:16,663 INFO L428 ceAbstractionStarter]: At program point setupFINAL(lines 558 564) the Hoare annotation is: true [2018-11-18 09:27:16,664 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 09:27:16,664 INFO L421 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)) [2018-11-18 09:27:16,665 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 09:27:16,665 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 09:27:16,665 INFO L421 ceAbstractionStarter]: At program point processEnvironment__wrappee__highWaterSensorENTRY(lines 154 178) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (< ~waterLevel~0 1) (not (= ~systemActive~0 1)) (= |old(~pumpRunning~0)| ~pumpRunning~0)) [2018-11-18 09:27:16,665 INFO L421 ceAbstractionStarter]: At program point L160(line 160) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (< ~waterLevel~0 1) (not (= ~systemActive~0 1)) (= |old(~pumpRunning~0)| ~pumpRunning~0)) [2018-11-18 09:27:16,665 INFO L425 ceAbstractionStarter]: For program point L160-1(line 160) no Hoare annotation was computed. [2018-11-18 09:27:16,665 INFO L425 ceAbstractionStarter]: For program point L158(lines 158 175) no Hoare annotation was computed. [2018-11-18 09:27:16,666 INFO L425 ceAbstractionStarter]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 154 178) no Hoare annotation was computed. [2018-11-18 09:27:16,666 INFO L421 ceAbstractionStarter]: At program point L173(line 173) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (< ~waterLevel~0 1) (not (= ~systemActive~0 1))) [2018-11-18 09:27:16,666 INFO L425 ceAbstractionStarter]: For program point L173-1(lines 154 178) no Hoare annotation was computed. [2018-11-18 09:27:16,666 INFO L421 ceAbstractionStarter]: At program point L168(line 168) the Hoare annotation is: (or (and (= 0 processEnvironment__wrappee__highWaterSensor_~tmp~1) (= |old(~pumpRunning~0)| ~pumpRunning~0)) (not (= 0 |old(~pumpRunning~0)|)) (< ~waterLevel~0 1) (not (= ~systemActive~0 1))) [2018-11-18 09:27:16,666 INFO L421 ceAbstractionStarter]: At program point L164(line 164) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (<= 2 ~waterLevel~0) (= |old(~pumpRunning~0)| ~pumpRunning~0)) (< ~waterLevel~0 1) (not (= ~systemActive~0 1))) [2018-11-18 09:27:16,666 INFO L425 ceAbstractionStarter]: For program point L162(lines 162 170) no Hoare annotation was computed. [2018-11-18 09:27:16,666 INFO L425 ceAbstractionStarter]: For program point waterRiseEXIT(lines 376 387) no Hoare annotation was computed. [2018-11-18 09:27:16,666 INFO L425 ceAbstractionStarter]: For program point L380-1(lines 376 387) no Hoare annotation was computed. [2018-11-18 09:27:16,666 INFO L421 ceAbstractionStarter]: At program point waterRiseENTRY(lines 376 387) the Hoare annotation is: (let ((.cse0 (= ~waterLevel~0 |old(~waterLevel~0)|)) (.cse1 (not (= ~systemActive~0 1)))) (and (or .cse0 .cse1 (< |old(~waterLevel~0)| 2)) (or (< |old(~waterLevel~0)| 1) .cse0 (or (not (= 0 ~pumpRunning~0)) .cse1)))) [2018-11-18 09:27:16,666 INFO L425 ceAbstractionStarter]: For program point __automaton_failFINAL(lines 965 972) no Hoare annotation was computed. [2018-11-18 09:27:16,666 INFO L428 ceAbstractionStarter]: At program point __automaton_failENTRY(lines 965 972) the Hoare annotation is: true [2018-11-18 09:27:16,666 INFO L425 ceAbstractionStarter]: For program point __automaton_failEXIT(lines 965 972) no Hoare annotation was computed. [2018-11-18 09:27:16,667 INFO L425 ceAbstractionStarter]: For program point __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION(line 969) no Hoare annotation was computed. [2018-11-18 09:27:16,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 09:27:16 BoogieIcfgContainer [2018-11-18 09:27:16,687 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 09:27:16,687 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 09:27:16,687 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 09:27:16,687 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 09:27:16,688 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:26:46" (3/4) ... [2018-11-18 09:27:16,691 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 09:27:16,700 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure select_helpers [2018-11-18 09:27:16,700 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure valid_product [2018-11-18 09:27:16,700 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __utac_acc__Specification4_spec__1 [2018-11-18 09:27:16,700 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 09:27:16,700 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure isPumpRunning [2018-11-18 09:27:16,700 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure isLowWaterLevel [2018-11-18 09:27:16,700 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure select_features [2018-11-18 09:27:16,700 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure runTest [2018-11-18 09:27:16,701 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2018-11-18 09:27:16,701 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2018-11-18 09:27:16,701 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure isHighWaterSensorDry [2018-11-18 09:27:16,701 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment [2018-11-18 09:27:16,701 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2018-11-18 09:27:16,701 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure test [2018-11-18 09:27:16,701 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure activatePump__wrappee__lowWaterSensor [2018-11-18 09:27:16,701 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure isLowWaterSensorDry [2018-11-18 09:27:16,701 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 09:27:16,701 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure activatePump [2018-11-18 09:27:16,701 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure getWaterLevel [2018-11-18 09:27:16,701 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure isHighWaterLevel [2018-11-18 09:27:16,701 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2018-11-18 09:27:16,701 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2018-11-18 09:27:16,702 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2018-11-18 09:27:16,702 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2018-11-18 09:27:16,702 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure lowerWaterLevel [2018-11-18 09:27:16,702 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure setup [2018-11-18 09:27:16,702 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2018-11-18 09:27:16,702 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2018-11-18 09:27:16,702 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __automaton_fail [2018-11-18 09:27:16,711 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 39 nodes and edges [2018-11-18 09:27:16,712 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2018-11-18 09:27:16,712 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-18 09:27:16,738 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((0 == pumpRunning && 1 <= waterLevel) && splverifierCounter == 0) || !(0 == \old(pumpRunning))) || (2 <= waterLevel && splverifierCounter == 0)) || !(systemActive == 1)) || !(\old(waterLevel) == 1)) || !(\old(methaneLevelCritical) == 0) [2018-11-18 09:27:16,738 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(0 == \old(pumpRunning)) || !(systemActive == 1)) || !(\old(waterLevel) == 1)) || !(\old(methaneLevelCritical) == 0) [2018-11-18 09:27:16,773 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_687330ff-d465-44be-82f4-d2aa82395e55/bin-2019/utaipan/witness.graphml [2018-11-18 09:27:16,773 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 09:27:16,774 INFO L168 Benchmark]: Toolchain (without parser) took 31063.38 ms. Allocated memory was 1.0 GB in the beginning and 2.6 GB in the end (delta: 1.6 GB). Free memory was 955.4 MB in the beginning and 2.0 GB in the end (delta: -1.1 GB). Peak memory consumption was 514.0 MB. Max. memory is 11.5 GB. [2018-11-18 09:27:16,775 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:27:16,775 INFO L168 Benchmark]: CACSL2BoogieTranslator took 421.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 955.4 MB in the beginning and 1.1 GB in the end (delta: -160.3 MB). Peak memory consumption was 31.8 MB. Max. memory is 11.5 GB. [2018-11-18 09:27:16,775 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 09:27:16,775 INFO L168 Benchmark]: Boogie Preprocessor took 34.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 09:27:16,776 INFO L168 Benchmark]: RCFGBuilder took 644.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 58.4 MB). Peak memory consumption was 58.4 MB. Max. memory is 11.5 GB. [2018-11-18 09:27:16,776 INFO L168 Benchmark]: TraceAbstraction took 29848.41 ms. Allocated memory was 1.2 GB in the beginning and 2.6 GB in the end (delta: 1.5 GB). Free memory was 1.1 GB in the beginning and 2.0 GB in the end (delta: -983.3 MB). Peak memory consumption was 1.8 GB. Max. memory is 11.5 GB. [2018-11-18 09:27:16,776 INFO L168 Benchmark]: Witness Printer took 86.27 ms. Allocated memory is still 2.6 GB. Free memory was 2.0 GB in the beginning and 2.0 GB in the end (delta: 41.1 kB). Peak memory consumption was 41.1 kB. Max. memory is 11.5 GB. [2018-11-18 09:27:16,778 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 421.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 955.4 MB in the beginning and 1.1 GB in the end (delta: -160.3 MB). Peak memory consumption was 31.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 34.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 644.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 58.4 MB). Peak memory consumption was 58.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 29848.41 ms. Allocated memory was 1.2 GB in the beginning and 2.6 GB in the end (delta: 1.5 GB). Free memory was 1.1 GB in the beginning and 2.0 GB in the end (delta: -983.3 MB). Peak memory consumption was 1.8 GB. Max. memory is 11.5 GB. * Witness Printer took 86.27 ms. Allocated memory is still 2.6 GB. Free memory was 2.0 GB in the beginning and 2.0 GB in the end (delta: 41.1 kB). Peak memory consumption was 41.1 kB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 969]: 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: 504]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: ((((((0 == pumpRunning && 1 <= waterLevel) && splverifierCounter == 0) || !(0 == \old(pumpRunning))) || (2 <= waterLevel && splverifierCounter == 0)) || !(systemActive == 1)) || !(\old(waterLevel) == 1)) || !(\old(methaneLevelCritical) == 0) - InvariantResult [Line: 514]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 53]: Loop Invariant Derived loop invariant: ((!(0 == \old(pumpRunning)) || !(systemActive == 1)) || !(\old(waterLevel) == 1)) || !(\old(methaneLevelCritical) == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 30 procedures, 158 locations, 1 error locations. SAFE Result, 29.7s OverallTime, 15 OverallIterations, 4 TraceHistogramMax, 14.7s AutomataDifference, 0.0s DeadEndRemovalTime, 3.7s HoareAnnotationTime, HoareTripleCheckerStatistics: 2983 SDtfs, 3513 SDslu, 10398 SDs, 0 SdLazy, 5567 SolverSat, 1209 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.4s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 2473 GetRequests, 2259 SyntacticMatches, 26 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2112occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.8s AbstIntTime, 8 AbstIntIterations, 3 AbstIntStrong, 0.9983203747846807 AbsIntWeakeningRatio, 0.862144420131291 AbsIntAvgWeakeningVarsNumRemoved, 39.479212253829324 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 15 MinimizatonAttempts, 375 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 64 LocationsWithAnnotation, 4788 PreInvPairs, 4945 NumberOfFragments, 1061 HoareAnnotationTreeSize, 4788 FomulaSimplifications, 13416 FormulaSimplificationTreeSizeReduction, 0.6s HoareSimplificationTime, 64 FomulaSimplificationsInter, 26474 FormulaSimplificationTreeSizeReductionInter, 3.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 2904 NumberOfCodeBlocks, 2904 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 3807 ConstructedInterpolants, 0 QuantifiedInterpolants, 821825 SizeOfPredicates, 19 NumberOfNonLiveVariables, 4223 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 25 InterpolantComputations, 11 PerfectInterpolantSequences, 1334/1400 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...