./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product40_false-unreach-call_false-termination.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_edb5f09d-32e3-4368-a388-9ceafd628343/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_edb5f09d-32e3-4368-a388-9ceafd628343/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_edb5f09d-32e3-4368-a388-9ceafd628343/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_edb5f09d-32e3-4368-a388-9ceafd628343/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product40_false-unreach-call_false-termination.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_edb5f09d-32e3-4368-a388-9ceafd628343/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_edb5f09d-32e3-4368-a388-9ceafd628343/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 a7dbd4e152ee971b4407c7068d06d15a4635d510 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-03 02:02:03,031 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 02:02:03,032 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 02:02:03,038 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 02:02:03,038 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 02:02:03,038 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 02:02:03,039 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 02:02:03,040 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 02:02:03,041 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 02:02:03,041 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 02:02:03,041 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 02:02:03,042 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 02:02:03,042 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 02:02:03,042 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 02:02:03,043 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 02:02:03,043 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 02:02:03,044 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 02:02:03,045 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 02:02:03,045 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 02:02:03,046 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 02:02:03,047 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 02:02:03,047 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 02:02:03,048 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 02:02:03,048 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 02:02:03,048 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 02:02:03,049 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 02:02:03,049 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 02:02:03,050 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 02:02:03,050 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 02:02:03,051 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 02:02:03,051 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 02:02:03,051 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 02:02:03,051 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 02:02:03,051 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 02:02:03,052 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 02:02:03,052 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 02:02:03,052 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_edb5f09d-32e3-4368-a388-9ceafd628343/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-03 02:02:03,059 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 02:02:03,059 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 02:02:03,060 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 02:02:03,060 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 02:02:03,060 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 02:02:03,060 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 02:02:03,060 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 02:02:03,060 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 02:02:03,060 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 02:02:03,060 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-03 02:02:03,060 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 02:02:03,060 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-03 02:02:03,061 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 02:02:03,061 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 02:02:03,061 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 02:02:03,061 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 02:02:03,061 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 02:02:03,061 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 02:02:03,061 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 02:02:03,061 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 02:02:03,061 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 02:02:03,061 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 02:02:03,062 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 02:02:03,062 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 02:02:03,062 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 02:02:03,062 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 02:02:03,062 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-03 02:02:03,062 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 02:02:03,062 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 02:02:03,062 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 02:02:03,062 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 02:02:03,062 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 02:02:03,062 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 02:02:03,062 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 02:02:03,062 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 02:02:03,063 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 02:02:03,063 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_edb5f09d-32e3-4368-a388-9ceafd628343/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 -> a7dbd4e152ee971b4407c7068d06d15a4635d510 [2018-12-03 02:02:03,079 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 02:02:03,087 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 02:02:03,089 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 02:02:03,090 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-03 02:02:03,091 INFO L276 PluginConnector]: CDTParser initialized [2018-12-03 02:02:03,091 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_edb5f09d-32e3-4368-a388-9ceafd628343/bin-2019/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product40_false-unreach-call_false-termination.cil.c [2018-12-03 02:02:03,128 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_edb5f09d-32e3-4368-a388-9ceafd628343/bin-2019/utaipan/data/c70d85ea8/49c12a232d8c4062aba25e5afca70a45/FLAG9bebfbda6 [2018-12-03 02:02:03,633 INFO L307 CDTParser]: Found 1 translation units. [2018-12-03 02:02:03,634 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_edb5f09d-32e3-4368-a388-9ceafd628343/sv-benchmarks/c/product-lines/minepump_spec4_product40_false-unreach-call_false-termination.cil.c [2018-12-03 02:02:03,640 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_edb5f09d-32e3-4368-a388-9ceafd628343/bin-2019/utaipan/data/c70d85ea8/49c12a232d8c4062aba25e5afca70a45/FLAG9bebfbda6 [2018-12-03 02:02:04,110 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_edb5f09d-32e3-4368-a388-9ceafd628343/bin-2019/utaipan/data/c70d85ea8/49c12a232d8c4062aba25e5afca70a45 [2018-12-03 02:02:04,112 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 02:02:04,113 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-03 02:02:04,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-03 02:02:04,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-03 02:02:04,116 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-03 02:02:04,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 02:02:04" (1/1) ... [2018-12-03 02:02:04,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a96ab85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:02:04, skipping insertion in model container [2018-12-03 02:02:04,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 02:02:04" (1/1) ... [2018-12-03 02:02:04,123 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-03 02:02:04,143 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-03 02:02:04,301 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 02:02:04,342 INFO L191 MainTranslator]: Completed pre-run [2018-12-03 02:02:04,388 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 02:02:04,402 INFO L195 MainTranslator]: Completed translation [2018-12-03 02:02:04,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:02:04 WrapperNode [2018-12-03 02:02:04,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-03 02:02:04,403 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 02:02:04,403 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 02:02:04,403 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 02:02:04,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:02:04" (1/1) ... [2018-12-03 02:02:04,417 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:02:04" (1/1) ... [2018-12-03 02:02:04,422 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 02:02:04,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 02:02:04,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 02:02:04,423 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 02:02:04,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:02:04" (1/1) ... [2018-12-03 02:02:04,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:02:04" (1/1) ... [2018-12-03 02:02:04,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:02:04" (1/1) ... [2018-12-03 02:02:04,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:02:04" (1/1) ... [2018-12-03 02:02:04,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:02:04" (1/1) ... [2018-12-03 02:02:04,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:02:04" (1/1) ... [2018-12-03 02:02:04,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:02:04" (1/1) ... [2018-12-03 02:02:04,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 02:02:04,443 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 02:02:04,443 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 02:02:04,443 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 02:02:04,444 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:02:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_edb5f09d-32e3-4368-a388-9ceafd628343/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 02:02:04,474 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2018-12-03 02:02:04,475 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2018-12-03 02:02:04,475 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2018-12-03 02:02:04,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2018-12-03 02:02:04,475 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 02:02:04,475 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 02:02:04,475 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2018-12-03 02:02:04,475 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2018-12-03 02:02:04,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-03 02:02:04,475 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2018-12-03 02:02:04,475 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2018-12-03 02:02:04,475 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2018-12-03 02:02:04,475 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2018-12-03 02:02:04,475 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2018-12-03 02:02:04,475 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2018-12-03 02:02:04,476 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2018-12-03 02:02:04,476 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2018-12-03 02:02:04,476 INFO L130 BoogieDeclarations]: Found specification of procedure test [2018-12-03 02:02:04,476 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2018-12-03 02:02:04,476 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2018-12-03 02:02:04,476 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2018-12-03 02:02:04,476 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2018-12-03 02:02:04,476 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2018-12-03 02:02:04,476 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2018-12-03 02:02:04,476 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2018-12-03 02:02:04,476 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2018-12-03 02:02:04,476 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2018-12-03 02:02:04,476 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2018-12-03 02:02:04,476 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2018-12-03 02:02:04,476 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2018-12-03 02:02:04,477 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2018-12-03 02:02:04,477 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2018-12-03 02:02:04,477 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2018-12-03 02:02:04,477 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2018-12-03 02:02:04,477 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2018-12-03 02:02:04,477 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2018-12-03 02:02:04,477 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2018-12-03 02:02:04,477 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2018-12-03 02:02:04,477 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2018-12-03 02:02:04,477 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2018-12-03 02:02:04,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2018-12-03 02:02:04,477 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2018-12-03 02:02:04,477 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2018-12-03 02:02:04,477 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2018-12-03 02:02:04,477 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2018-12-03 02:02:04,478 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2018-12-03 02:02:04,478 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2018-12-03 02:02:04,478 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2018-12-03 02:02:04,478 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2018-12-03 02:02:04,478 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2018-12-03 02:02:04,478 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2018-12-03 02:02:04,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2018-12-03 02:02:04,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-03 02:02:04,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-03 02:02:04,478 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2018-12-03 02:02:04,478 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2018-12-03 02:02:04,478 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2018-12-03 02:02:04,478 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2018-12-03 02:02:04,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 02:02:04,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 02:02:04,742 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 02:02:04,742 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-03 02:02:04,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 02:02:04 BoogieIcfgContainer [2018-12-03 02:02:04,743 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 02:02:04,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 02:02:04,744 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 02:02:04,746 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 02:02:04,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 02:02:04" (1/3) ... [2018-12-03 02:02:04,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ad7c4a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 02:02:04, skipping insertion in model container [2018-12-03 02:02:04,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:02:04" (2/3) ... [2018-12-03 02:02:04,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ad7c4a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 02:02:04, skipping insertion in model container [2018-12-03 02:02:04,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 02:02:04" (3/3) ... [2018-12-03 02:02:04,749 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product40_false-unreach-call_false-termination.cil.c [2018-12-03 02:02:04,757 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 02:02:04,763 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 02:02:04,772 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 02:02:04,796 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 02:02:04,796 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 02:02:04,797 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 02:02:04,797 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 02:02:04,797 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 02:02:04,797 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 02:02:04,797 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 02:02:04,797 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 02:02:04,814 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states. [2018-12-03 02:02:04,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-12-03 02:02:04,820 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 02:02:04,820 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 02:02:04,821 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 02:02:04,825 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 02:02:04,825 INFO L82 PathProgramCache]: Analyzing trace with hash -621643722, now seen corresponding path program 1 times [2018-12-03 02:02:04,826 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 02:02:04,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:02:04,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 02:02:04,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:02:04,854 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 02:02:04,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 02:02:04,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 02:02:04,963 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 02:02:04,963 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 02:02:04,963 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 02:02:04,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-03 02:02:04,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-03 02:02:04,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-03 02:02:04,975 INFO L87 Difference]: Start difference. First operand 149 states. Second operand 2 states. [2018-12-03 02:02:04,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 02:02:04,998 INFO L93 Difference]: Finished difference Result 272 states and 335 transitions. [2018-12-03 02:02:04,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-03 02:02:04,998 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2018-12-03 02:02:04,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 02:02:05,005 INFO L225 Difference]: With dead ends: 272 [2018-12-03 02:02:05,005 INFO L226 Difference]: Without dead ends: 136 [2018-12-03 02:02:05,007 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-03 02:02:05,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-12-03 02:02:05,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2018-12-03 02:02:05,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-12-03 02:02:05,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 159 transitions. [2018-12-03 02:02:05,038 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 159 transitions. Word has length 46 [2018-12-03 02:02:05,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 02:02:05,038 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 159 transitions. [2018-12-03 02:02:05,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-03 02:02:05,038 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 159 transitions. [2018-12-03 02:02:05,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-12-03 02:02:05,040 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 02:02:05,040 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 02:02:05,040 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 02:02:05,040 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 02:02:05,040 INFO L82 PathProgramCache]: Analyzing trace with hash 2098653082, now seen corresponding path program 1 times [2018-12-03 02:02:05,040 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 02:02:05,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:02:05,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 02:02:05,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:02:05,041 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 02:02:05,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 02:02:05,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 02:02:05,092 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 02:02:05,092 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-03 02:02:05,093 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 02:02:05,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 02:02:05,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 02:02:05,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 02:02:05,094 INFO L87 Difference]: Start difference. First operand 136 states and 159 transitions. Second operand 3 states. [2018-12-03 02:02:05,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 02:02:05,107 INFO L93 Difference]: Finished difference Result 211 states and 245 transitions. [2018-12-03 02:02:05,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 02:02:05,107 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2018-12-03 02:02:05,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 02:02:05,108 INFO L225 Difference]: With dead ends: 211 [2018-12-03 02:02:05,108 INFO L226 Difference]: Without dead ends: 127 [2018-12-03 02:02:05,109 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 02:02:05,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-12-03 02:02:05,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-12-03 02:02:05,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-12-03 02:02:05,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 147 transitions. [2018-12-03 02:02:05,117 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 147 transitions. Word has length 47 [2018-12-03 02:02:05,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 02:02:05,117 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 147 transitions. [2018-12-03 02:02:05,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 02:02:05,117 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 147 transitions. [2018-12-03 02:02:05,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-12-03 02:02:05,118 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 02:02:05,118 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 02:02:05,118 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 02:02:05,118 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 02:02:05,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1931743026, now seen corresponding path program 1 times [2018-12-03 02:02:05,118 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 02:02:05,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:02:05,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 02:02:05,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:02:05,119 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 02:02:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 02:02:05,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 02:02:05,195 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 02:02:05,195 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-03 02:02:05,195 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 02:02:05,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-03 02:02:05,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-03 02:02:05,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-12-03 02:02:05,195 INFO L87 Difference]: Start difference. First operand 127 states and 147 transitions. Second operand 7 states. [2018-12-03 02:02:05,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 02:02:05,449 INFO L93 Difference]: Finished difference Result 383 states and 461 transitions. [2018-12-03 02:02:05,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-03 02:02:05,450 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2018-12-03 02:02:05,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 02:02:05,453 INFO L225 Difference]: With dead ends: 383 [2018-12-03 02:02:05,453 INFO L226 Difference]: Without dead ends: 280 [2018-12-03 02:02:05,454 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-12-03 02:02:05,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2018-12-03 02:02:05,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 268. [2018-12-03 02:02:05,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2018-12-03 02:02:05,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 322 transitions. [2018-12-03 02:02:05,482 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 322 transitions. Word has length 52 [2018-12-03 02:02:05,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 02:02:05,483 INFO L480 AbstractCegarLoop]: Abstraction has 268 states and 322 transitions. [2018-12-03 02:02:05,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-03 02:02:05,483 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 322 transitions. [2018-12-03 02:02:05,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-12-03 02:02:05,485 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 02:02:05,485 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 02:02:05,485 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 02:02:05,485 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 02:02:05,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1604112603, now seen corresponding path program 1 times [2018-12-03 02:02:05,486 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 02:02:05,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:02:05,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 02:02:05,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:02:05,487 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 02:02:05,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 02:02:05,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 02:02:05,572 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 02:02:05,572 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-12-03 02:02:05,572 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 02:02:05,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-03 02:02:05,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-03 02:02:05,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-12-03 02:02:05,573 INFO L87 Difference]: Start difference. First operand 268 states and 322 transitions. Second operand 10 states. [2018-12-03 02:02:05,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 02:02:05,906 INFO L93 Difference]: Finished difference Result 952 states and 1236 transitions. [2018-12-03 02:02:05,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-12-03 02:02:05,907 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2018-12-03 02:02:05,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 02:02:05,910 INFO L225 Difference]: With dead ends: 952 [2018-12-03 02:02:05,910 INFO L226 Difference]: Without dead ends: 708 [2018-12-03 02:02:05,911 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2018-12-03 02:02:05,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2018-12-03 02:02:05,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 696. [2018-12-03 02:02:05,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2018-12-03 02:02:05,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 870 transitions. [2018-12-03 02:02:05,948 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 870 transitions. Word has length 57 [2018-12-03 02:02:05,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 02:02:05,948 INFO L480 AbstractCegarLoop]: Abstraction has 696 states and 870 transitions. [2018-12-03 02:02:05,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-03 02:02:05,948 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 870 transitions. [2018-12-03 02:02:05,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-12-03 02:02:05,950 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 02:02:05,951 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 02:02:05,951 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 02:02:05,951 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 02:02:05,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1255124959, now seen corresponding path program 1 times [2018-12-03 02:02:05,951 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 02:02:05,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:02:05,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 02:02:05,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:02:05,952 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 02:02:05,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 02:02:06,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 02:02:06,012 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 02:02:06,012 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 02:02:06,012 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 02:02:06,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 02:02:06,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 02:02:06,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 02:02:06,012 INFO L87 Difference]: Start difference. First operand 696 states and 870 transitions. Second operand 4 states. [2018-12-03 02:02:06,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 02:02:06,204 INFO L93 Difference]: Finished difference Result 1765 states and 2415 transitions. [2018-12-03 02:02:06,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-03 02:02:06,204 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2018-12-03 02:02:06,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 02:02:06,208 INFO L225 Difference]: With dead ends: 1765 [2018-12-03 02:02:06,208 INFO L226 Difference]: Without dead ends: 1093 [2018-12-03 02:02:06,209 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-03 02:02:06,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2018-12-03 02:02:06,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 955. [2018-12-03 02:02:06,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 955 states. [2018-12-03 02:02:06,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1202 transitions. [2018-12-03 02:02:06,255 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1202 transitions. Word has length 61 [2018-12-03 02:02:06,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 02:02:06,255 INFO L480 AbstractCegarLoop]: Abstraction has 955 states and 1202 transitions. [2018-12-03 02:02:06,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 02:02:06,256 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1202 transitions. [2018-12-03 02:02:06,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-12-03 02:02:06,257 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 02:02:06,257 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 02:02:06,258 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 02:02:06,258 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 02:02:06,258 INFO L82 PathProgramCache]: Analyzing trace with hash 445970115, now seen corresponding path program 1 times [2018-12-03 02:02:06,258 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 02:02:06,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:02:06,258 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 02:02:06,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:02:06,258 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 02:02:06,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 02:02:06,331 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-12-03 02:02:06,331 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 02:02:06,331 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 02:02:06,331 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 90 with the following transitions: [2018-12-03 02:02:06,333 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [42], [44], [45], [46], [47], [48], [83], [92], [96], [100], [103], [108], [114], [116], [122], [125], [128], [136], [137], [140], [141], [193], [200], [203], [211], [238], [242], [243], [246], [247], [248], [249], [250], [252], [253], [254], [255], [256], [257], [258], [259], [260], [264], [276], [277], [282], [283], [284], [285], [298], [299], [300], [301], [302] [2018-12-03 02:02:06,355 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-03 02:02:06,355 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 02:02:06,754 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-03 02:02:06,755 INFO L272 AbstractInterpreter]: Visited 67 different actions 137 times. Merged at 13 different actions 19 times. Never widened. Performed 4709 root evaluator evaluations with a maximum evaluation depth of 3. Performed 4709 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 2 fixpoints after 2 different actions. Largest state had 133 variables. [2018-12-03 02:02:06,760 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 02:02:06,761 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-03 02:02:06,761 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 02:02:06,761 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_edb5f09d-32e3-4368-a388-9ceafd628343/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-03 02:02:06,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 02:02:06,770 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-03 02:02:06,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 02:02:06,852 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 02:02:06,937 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-03 02:02:06,937 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 02:02:07,065 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-03 02:02:07,085 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-03 02:02:07,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 15 [2018-12-03 02:02:07,086 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-03 02:02:07,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-03 02:02:07,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-03 02:02:07,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2018-12-03 02:02:07,087 INFO L87 Difference]: Start difference. First operand 955 states and 1202 transitions. Second operand 12 states. [2018-12-03 02:02:08,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 02:02:08,745 INFO L93 Difference]: Finished difference Result 2281 states and 3109 transitions. [2018-12-03 02:02:08,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-12-03 02:02:08,745 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2018-12-03 02:02:08,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 02:02:08,750 INFO L225 Difference]: With dead ends: 2281 [2018-12-03 02:02:08,750 INFO L226 Difference]: Without dead ends: 1594 [2018-12-03 02:02:08,753 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 182 SyntacticMatches, 8 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 858 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=645, Invalid=2547, Unknown=0, NotChecked=0, Total=3192 [2018-12-03 02:02:08,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2018-12-03 02:02:08,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 1383. [2018-12-03 02:02:08,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1383 states. [2018-12-03 02:02:08,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 1761 transitions. [2018-12-03 02:02:08,835 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 1761 transitions. Word has length 89 [2018-12-03 02:02:08,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 02:02:08,835 INFO L480 AbstractCegarLoop]: Abstraction has 1383 states and 1761 transitions. [2018-12-03 02:02:08,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-03 02:02:08,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 1761 transitions. [2018-12-03 02:02:08,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-12-03 02:02:08,838 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 02:02:08,838 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 02:02:08,838 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 02:02:08,838 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 02:02:08,838 INFO L82 PathProgramCache]: Analyzing trace with hash -497282022, now seen corresponding path program 1 times [2018-12-03 02:02:08,838 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 02:02:08,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:02:08,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 02:02:08,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:02:08,839 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 02:02:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 02:02:08,892 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-12-03 02:02:08,892 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 02:02:08,892 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 02:02:08,892 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 133 with the following transitions: [2018-12-03 02:02:08,893 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [46], [47], [48], [51], [53], [54], [57], [60], [62], [63], [66], [68], [74], [78], [81], [82], [83], [92], [96], [100], [106], [108], [114], [116], [122], [128], [136], [137], [138], [139], [140], [141], [142], [144], [147], [151], [152], [160], [161], [190], [193], [197], [203], [206], [210], [211], [215], [218], [220], [223], [230], [233], [243], [246], [247], [248], [249], [250], [252], [253], [254], [255], [256], [257], [258], [259], [260], [264], [266], [267], [268], [269], [272], [273], [274], [275], [284], [285], [288], [289], [294], [295], [296], [297], [298], [299], [300], [301], [302], [304], [305], [306], [307], [310], [311] [2018-12-03 02:02:08,896 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-03 02:02:08,896 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 02:02:09,494 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-03 02:02:09,494 INFO L272 AbstractInterpreter]: Visited 108 different actions 367 times. Merged at 17 different actions 35 times. Never widened. Performed 13652 root evaluator evaluations with a maximum evaluation depth of 3. Performed 13652 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 5 fixpoints after 3 different actions. Largest state had 133 variables. [2018-12-03 02:02:09,495 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 02:02:09,495 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-03 02:02:09,496 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 02:02:09,496 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_edb5f09d-32e3-4368-a388-9ceafd628343/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-03 02:02:09,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 02:02:09,502 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-03 02:02:09,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 02:02:09,568 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 02:02:09,579 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-12-03 02:02:09,579 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 02:02:09,714 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-12-03 02:02:09,748 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-12-03 02:02:09,748 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 6 [2018-12-03 02:02:09,748 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 02:02:09,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-03 02:02:09,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-03 02:02:09,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-03 02:02:09,749 INFO L87 Difference]: Start difference. First operand 1383 states and 1761 transitions. Second operand 6 states. [2018-12-03 02:02:09,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 02:02:09,847 INFO L93 Difference]: Finished difference Result 2782 states and 3643 transitions. [2018-12-03 02:02:09,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-03 02:02:09,847 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2018-12-03 02:02:09,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 02:02:09,854 INFO L225 Difference]: With dead ends: 2782 [2018-12-03 02:02:09,855 INFO L226 Difference]: Without dead ends: 1423 [2018-12-03 02:02:09,859 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 261 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-12-03 02:02:09,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2018-12-03 02:02:09,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1423. [2018-12-03 02:02:09,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1423 states. [2018-12-03 02:02:09,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 1805 transitions. [2018-12-03 02:02:09,905 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 1805 transitions. Word has length 132 [2018-12-03 02:02:09,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 02:02:09,906 INFO L480 AbstractCegarLoop]: Abstraction has 1423 states and 1805 transitions. [2018-12-03 02:02:09,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-03 02:02:09,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 1805 transitions. [2018-12-03 02:02:09,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-12-03 02:02:09,908 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 02:02:09,908 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 02:02:09,908 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 02:02:09,908 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 02:02:09,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1069475928, now seen corresponding path program 1 times [2018-12-03 02:02:09,908 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 02:02:09,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:02:09,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 02:02:09,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:02:09,909 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 02:02:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 02:02:09,977 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-12-03 02:02:09,977 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 02:02:09,977 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 02:02:09,978 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 133 with the following transitions: [2018-12-03 02:02:09,978 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [46], [47], [48], [51], [53], [54], [57], [60], [62], [63], [66], [68], [74], [78], [81], [82], [83], [92], [96], [100], [106], [108], [114], [116], [122], [128], [136], [137], [138], [139], [140], [141], [142], [144], [149], [151], [152], [160], [161], [190], [193], [197], [203], [206], [210], [211], [215], [218], [220], [223], [230], [233], [243], [246], [247], [248], [249], [250], [252], [253], [254], [255], [256], [257], [258], [259], [260], [264], [266], [267], [268], [269], [272], [273], [274], [275], [284], [285], [288], [289], [294], [295], [296], [297], [298], [299], [300], [301], [302], [304], [305], [306], [307], [310], [311] [2018-12-03 02:02:09,980 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-03 02:02:09,981 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 02:02:10,083 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-03 02:02:10,084 INFO L272 AbstractInterpreter]: Visited 54 different actions 54 times. Never merged. Never widened. Performed 1942 root evaluator evaluations with a maximum evaluation depth of 3. Performed 1942 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 133 variables. [2018-12-03 02:02:10,086 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 02:02:10,086 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-03 02:02:10,210 INFO L227 lantSequenceWeakener]: Weakened 64 states. On average, predicates are now at 96.43% of their original sizes. [2018-12-03 02:02:10,210 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-03 02:02:10,247 INFO L418 sIntCurrentIteration]: We unified 131 AI predicates to 131 [2018-12-03 02:02:10,247 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-03 02:02:10,248 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-03 02:02:10,248 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2018-12-03 02:02:10,248 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 02:02:10,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-03 02:02:10,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-03 02:02:10,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-12-03 02:02:10,248 INFO L87 Difference]: Start difference. First operand 1423 states and 1805 transitions. Second operand 9 states. [2018-12-03 02:02:11,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 02:02:11,173 INFO L93 Difference]: Finished difference Result 2995 states and 3814 transitions. [2018-12-03 02:02:11,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-03 02:02:11,173 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 132 [2018-12-03 02:02:11,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 02:02:11,181 INFO L225 Difference]: With dead ends: 2995 [2018-12-03 02:02:11,181 INFO L226 Difference]: Without dead ends: 1596 [2018-12-03 02:02:11,185 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 134 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-12-03 02:02:11,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2018-12-03 02:02:11,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1569. [2018-12-03 02:02:11,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2018-12-03 02:02:11,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 1974 transitions. [2018-12-03 02:02:11,282 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 1974 transitions. Word has length 132 [2018-12-03 02:02:11,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 02:02:11,282 INFO L480 AbstractCegarLoop]: Abstraction has 1569 states and 1974 transitions. [2018-12-03 02:02:11,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-03 02:02:11,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 1974 transitions. [2018-12-03 02:02:11,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-12-03 02:02:11,286 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 02:02:11,286 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 02:02:11,286 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 02:02:11,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 02:02:11,287 INFO L82 PathProgramCache]: Analyzing trace with hash -257832655, now seen corresponding path program 1 times [2018-12-03 02:02:11,287 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 02:02:11,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:02:11,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 02:02:11,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:02:11,288 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 02:02:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 02:02:11,390 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-12-03 02:02:11,390 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 02:02:11,390 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 02:02:11,391 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 137 with the following transitions: [2018-12-03 02:02:11,391 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [46], [47], [48], [51], [53], [54], [57], [61], [62], [63], [66], [68], [74], [78], [81], [82], [83], [92], [96], [100], [103], [106], [108], [114], [116], [122], [128], [136], [137], [138], [139], [140], [141], [142], [144], [149], [151], [152], [160], [161], [190], [193], [197], [203], [206], [210], [211], [215], [218], [220], [223], [230], [233], [238], [242], [243], [246], [247], [248], [249], [250], [252], [253], [254], [255], [256], [257], [258], [259], [260], [264], [266], [267], [268], [269], [272], [273], [274], [275], [276], [277], [284], [285], [288], [289], [294], [295], [296], [297], [298], [299], [300], [301], [302], [304], [305], [306], [307], [310], [311] [2018-12-03 02:02:11,393 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-03 02:02:11,393 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 02:02:12,018 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-03 02:02:12,018 INFO L272 AbstractInterpreter]: Visited 113 different actions 515 times. Merged at 19 different actions 55 times. Never widened. Performed 17099 root evaluator evaluations with a maximum evaluation depth of 3. Performed 17099 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 9 fixpoints after 3 different actions. Largest state had 133 variables. [2018-12-03 02:02:12,020 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 02:02:12,020 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-03 02:02:12,020 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 02:02:12,020 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_edb5f09d-32e3-4368-a388-9ceafd628343/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-03 02:02:12,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 02:02:12,028 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-03 02:02:12,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 02:02:12,100 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 02:02:12,157 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 17 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 02:02:12,157 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 02:02:12,305 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-12-03 02:02:12,320 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-03 02:02:12,320 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2018-12-03 02:02:12,320 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-03 02:02:12,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-12-03 02:02:12,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-12-03 02:02:12,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2018-12-03 02:02:12,321 INFO L87 Difference]: Start difference. First operand 1569 states and 1974 transitions. Second operand 15 states. [2018-12-03 02:02:13,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 02:02:13,197 INFO L93 Difference]: Finished difference Result 2977 states and 4053 transitions. [2018-12-03 02:02:13,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-12-03 02:02:13,197 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 136 [2018-12-03 02:02:13,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 02:02:13,205 INFO L225 Difference]: With dead ends: 2977 [2018-12-03 02:02:13,205 INFO L226 Difference]: Without dead ends: 1838 [2018-12-03 02:02:13,208 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 264 SyntacticMatches, 6 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=243, Invalid=687, Unknown=0, NotChecked=0, Total=930 [2018-12-03 02:02:13,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2018-12-03 02:02:13,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1455. [2018-12-03 02:02:13,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1455 states. [2018-12-03 02:02:13,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 1826 transitions. [2018-12-03 02:02:13,279 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 1826 transitions. Word has length 136 [2018-12-03 02:02:13,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 02:02:13,279 INFO L480 AbstractCegarLoop]: Abstraction has 1455 states and 1826 transitions. [2018-12-03 02:02:13,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-12-03 02:02:13,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 1826 transitions. [2018-12-03 02:02:13,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-12-03 02:02:13,282 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 02:02:13,282 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 02:02:13,282 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 02:02:13,282 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 02:02:13,282 INFO L82 PathProgramCache]: Analyzing trace with hash 2087669556, now seen corresponding path program 1 times [2018-12-03 02:02:13,283 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 02:02:13,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:02:13,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 02:02:13,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:02:13,283 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 02:02:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 02:02:13,338 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-12-03 02:02:13,338 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 02:02:13,338 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 02:02:13,338 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 137 with the following transitions: [2018-12-03 02:02:13,338 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [46], [47], [48], [51], [53], [54], [57], [60], [62], [63], [66], [68], [74], [78], [81], [82], [83], [92], [96], [100], [106], [108], [111], [114], [116], [122], [128], [136], [137], [138], [139], [140], [141], [142], [144], [149], [151], [152], [157], [159], [160], [161], [190], [193], [197], [203], [206], [210], [211], [215], [218], [220], [223], [230], [233], [243], [246], [247], [248], [249], [250], [252], [253], [254], [255], [256], [257], [258], [259], [260], [264], [266], [267], [268], [269], [272], [273], [274], [275], [278], [279], [284], [285], [288], [289], [294], [295], [296], [297], [298], [299], [300], [301], [302], [304], [305], [306], [307], [310], [311] [2018-12-03 02:02:13,339 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-03 02:02:13,339 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 02:02:13,480 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-03 02:02:13,480 INFO L272 AbstractInterpreter]: Visited 59 different actions 83 times. Merged at 4 different actions 4 times. Never widened. Performed 4632 root evaluator evaluations with a maximum evaluation depth of 3. Performed 4632 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 133 variables. [2018-12-03 02:02:13,483 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 02:02:13,483 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-03 02:02:13,620 INFO L227 lantSequenceWeakener]: Weakened 68 states. On average, predicates are now at 96.42% of their original sizes. [2018-12-03 02:02:13,620 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-03 02:02:13,677 INFO L418 sIntCurrentIteration]: We unified 135 AI predicates to 135 [2018-12-03 02:02:13,677 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-03 02:02:13,678 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-03 02:02:13,678 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [8] total 18 [2018-12-03 02:02:13,678 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 02:02:13,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-03 02:02:13,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-03 02:02:13,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-12-03 02:02:13,679 INFO L87 Difference]: Start difference. First operand 1455 states and 1826 transitions. Second operand 12 states. [2018-12-03 02:02:15,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 02:02:15,070 INFO L93 Difference]: Finished difference Result 3124 states and 3946 transitions. [2018-12-03 02:02:15,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-12-03 02:02:15,070 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 136 [2018-12-03 02:02:15,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 02:02:15,074 INFO L225 Difference]: With dead ends: 3124 [2018-12-03 02:02:15,074 INFO L226 Difference]: Without dead ends: 1839 [2018-12-03 02:02:15,076 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 145 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2018-12-03 02:02:15,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2018-12-03 02:02:15,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1721. [2018-12-03 02:02:15,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1721 states. [2018-12-03 02:02:15,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1721 states to 1721 states and 2124 transitions. [2018-12-03 02:02:15,133 INFO L78 Accepts]: Start accepts. Automaton has 1721 states and 2124 transitions. Word has length 136 [2018-12-03 02:02:15,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 02:02:15,133 INFO L480 AbstractCegarLoop]: Abstraction has 1721 states and 2124 transitions. [2018-12-03 02:02:15,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-03 02:02:15,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1721 states and 2124 transitions. [2018-12-03 02:02:15,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-12-03 02:02:15,135 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 02:02:15,135 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 02:02:15,136 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 02:02:15,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 02:02:15,136 INFO L82 PathProgramCache]: Analyzing trace with hash 602482277, now seen corresponding path program 1 times [2018-12-03 02:02:15,136 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 02:02:15,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:02:15,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 02:02:15,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:02:15,136 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 02:02:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 02:02:15,161 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-12-03 02:02:15,161 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 02:02:15,161 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 02:02:15,161 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 02:02:15,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 02:02:15,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 02:02:15,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 02:02:15,162 INFO L87 Difference]: Start difference. First operand 1721 states and 2124 transitions. Second operand 4 states. [2018-12-03 02:02:15,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 02:02:15,275 INFO L93 Difference]: Finished difference Result 2640 states and 3254 transitions. [2018-12-03 02:02:15,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 02:02:15,276 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2018-12-03 02:02:15,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 02:02:15,278 INFO L225 Difference]: With dead ends: 2640 [2018-12-03 02:02:15,278 INFO L226 Difference]: Without dead ends: 943 [2018-12-03 02:02:15,280 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 02:02:15,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2018-12-03 02:02:15,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 918. [2018-12-03 02:02:15,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 918 states. [2018-12-03 02:02:15,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1100 transitions. [2018-12-03 02:02:15,311 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1100 transitions. Word has length 137 [2018-12-03 02:02:15,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 02:02:15,312 INFO L480 AbstractCegarLoop]: Abstraction has 918 states and 1100 transitions. [2018-12-03 02:02:15,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 02:02:15,312 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1100 transitions. [2018-12-03 02:02:15,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-12-03 02:02:15,313 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 02:02:15,314 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 02:02:15,314 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 02:02:15,314 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 02:02:15,314 INFO L82 PathProgramCache]: Analyzing trace with hash -354609960, now seen corresponding path program 2 times [2018-12-03 02:02:15,314 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 02:02:15,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:02:15,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 02:02:15,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:02:15,314 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 02:02:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 02:02:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 02:02:15,405 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-03 02:02:15,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 02:02:15 BoogieIcfgContainer [2018-12-03 02:02:15,505 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 02:02:15,505 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-03 02:02:15,505 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-03 02:02:15,505 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-03 02:02:15,506 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 02:02:04" (3/4) ... [2018-12-03 02:02:15,507 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-03 02:02:15,606 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_edb5f09d-32e3-4368-a388-9ceafd628343/bin-2019/utaipan/witness.graphml [2018-12-03 02:02:15,606 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-03 02:02:15,607 INFO L168 Benchmark]: Toolchain (without parser) took 11494.31 ms. Allocated memory was 1.0 GB in the beginning and 1.6 GB in the end (delta: 572.5 MB). Free memory was 947.0 MB in the beginning and 787.9 MB in the end (delta: 159.2 MB). Peak memory consumption was 731.7 MB. Max. memory is 11.5 GB. [2018-12-03 02:02:15,607 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 02:02:15,608 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.59 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.6 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -142.0 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2018-12-03 02:02:15,608 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-03 02:02:15,608 INFO L168 Benchmark]: Boogie Preprocessor took 20.33 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-03 02:02:15,608 INFO L168 Benchmark]: RCFGBuilder took 299.69 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 46.5 MB). Peak memory consumption was 46.5 MB. Max. memory is 11.5 GB. [2018-12-03 02:02:15,608 INFO L168 Benchmark]: TraceAbstraction took 10761.56 ms. Allocated memory was 1.1 GB in the beginning and 1.6 GB in the end (delta: 472.9 MB). Free memory was 1.0 GB in the beginning and 844.4 MB in the end (delta: 190.0 MB). Peak memory consumption was 662.9 MB. Max. memory is 11.5 GB. [2018-12-03 02:02:15,608 INFO L168 Benchmark]: Witness Printer took 100.96 ms. Allocated memory is still 1.6 GB. Free memory was 844.4 MB in the beginning and 787.9 MB in the end (delta: 56.5 MB). Peak memory consumption was 56.5 MB. Max. memory is 11.5 GB. [2018-12-03 02:02:15,609 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 289.59 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.6 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -142.0 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.33 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 299.69 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 46.5 MB). Peak memory consumption was 46.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 10761.56 ms. Allocated memory was 1.1 GB in the beginning and 1.6 GB in the end (delta: 472.9 MB). Free memory was 1.0 GB in the beginning and 844.4 MB in the end (delta: 190.0 MB). Peak memory consumption was 662.9 MB. Max. memory is 11.5 GB. * Witness Printer took 100.96 ms. Allocated memory is still 1.6 GB. Free memory was 844.4 MB in the beginning and 787.9 MB in the end (delta: 56.5 MB). Peak memory consumption was 56.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 329]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L123] int pumpRunning = 0; [L124] int systemActive = 1; [L334] int cleanupTimeShifts = 4; [L434] int waterLevel = 1; [L435] int methaneLevelCritical = 0; [L697] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L410] int retValue_acc ; [L411] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L415] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L416] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L417] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L946] int retValue_acc ; [L949] retValue_acc = 1 [L950] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L417] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L417] tmp = valid_product() [L419] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L421] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L422] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L401] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L47] int splverifierCounter ; [L48] int tmp ; [L49] int tmp___0 ; [L50] int tmp___1 ; [L51] int tmp___2 ; [L54] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L56] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L58] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L64] tmp = __VERIFIER_nondet_int() [L66] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L68] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L452] COND TRUE waterLevel < 2 [L453] waterLevel = waterLevel + 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L68] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___2)) [L92] tmp___1 = __VERIFIER_nondet_int() [L94] COND FALSE !(\read(tmp___1)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L103] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L131] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L138] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L140] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L186] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L189] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L204] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L160] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L163] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L165] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L283] int retValue_acc ; [L284] int tmp ; [L285] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L289] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L514] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L517] COND FALSE !(waterLevel < 2) [L521] retValue_acc = 0 [L522] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L289] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L289] tmp = isHighWaterSensorDry() [L291] COND FALSE !(\read(tmp)) [L294] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L296] retValue_acc = tmp___0 [L297] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L165] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L165] tmp = isHighWaterLevel() [L167] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L169] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L214] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L169] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L204] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L140] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L146] CALL __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L895] int tmp ; [L896] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L900] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L505] int retValue_acc ; [L508] retValue_acc = waterLevel [L509] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=2, systemActive=1, waterLevel=2] [L900] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, getWaterLevel()=2, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L900] tmp = getWaterLevel() [L902] COND FALSE !(tmp == 0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=2, waterLevel=2] [L146] RET __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L103] RET timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L56] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L58] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___2)) [L92] tmp___1 = __VERIFIER_nondet_int() [L94] COND FALSE !(\read(tmp___1)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L103] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L131] COND TRUE \read(pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L133] CALL lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L440] COND TRUE waterLevel > 0 [L441] waterLevel = waterLevel - 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L133] RET lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L138] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L140] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L186] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L189] COND TRUE \read(pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L191] CALL, EXPR isMethaneAlarm() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L227] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L231] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L473] int retValue_acc ; [L476] retValue_acc = methaneLevelCritical [L477] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=1] [L231] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L231] retValue_acc = isMethaneLevelCritical() [L233] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=1] [L191] RET, EXPR isMethaneAlarm() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneAlarm()=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L191] tmp = isMethaneAlarm() [L193] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=1] [L199] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L160] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L163] COND FALSE !(! pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L178] FCALL processEnvironment__wrappee__base() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L199] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=1] [L140] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L146] CALL __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L895] int tmp ; [L896] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L900] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L505] int retValue_acc ; [L508] retValue_acc = waterLevel [L509] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L900] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, getWaterLevel()=1, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L900] tmp = getWaterLevel() [L902] COND FALSE !(tmp == 0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L146] RET __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L103] RET timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=1] [L56] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=1] [L58] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=1] [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=1] [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=1] [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___2)) [L92] tmp___1 = __VERIFIER_nondet_int() [L94] COND FALSE !(\read(tmp___1)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=1] [L103] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L131] COND TRUE \read(pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L133] CALL lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L440] COND TRUE waterLevel > 0 [L441] waterLevel = waterLevel - 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L133] RET lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L138] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L140] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L186] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L189] COND TRUE \read(pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L191] CALL, EXPR isMethaneAlarm() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L227] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L231] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L473] int retValue_acc ; [L476] retValue_acc = methaneLevelCritical [L477] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L231] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L231] retValue_acc = isMethaneLevelCritical() [L233] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L191] RET, EXPR isMethaneAlarm() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, isMethaneAlarm()=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L191] tmp = isMethaneAlarm() [L193] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L199] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L160] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L163] COND FALSE !(! pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L178] FCALL processEnvironment__wrappee__base() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L199] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L140] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L146] CALL __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L895] int tmp ; [L896] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L900] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L505] int retValue_acc ; [L508] retValue_acc = waterLevel [L509] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L900] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, getWaterLevel()=0, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L900] tmp = getWaterLevel() [L902] COND TRUE tmp == 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L904] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L238] int retValue_acc ; [L241] retValue_acc = pumpRunning [L242] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=0] [L904] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L904] tmp___0 = isPumpRunning() [L906] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=0] [L908] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L329] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 29 procedures, 149 locations, 1 error locations. UNSAFE Result, 10.7s OverallTime, 12 OverallIterations, 3 TraceHistogramMax, 5.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1960 SDtfs, 2934 SDslu, 4759 SDs, 0 SdLazy, 5127 SolverSat, 1614 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 1149 GetRequests, 980 SyntacticMatches, 19 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1192 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1721occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.9s AbstIntTime, 5 AbstIntIterations, 2 AbstIntStrong, 0.9980363697590862 AbsIntWeakeningRatio, 0.9022556390977443 AbsIntAvgWeakeningVarsNumRemoved, 42.63157894736842 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 11 MinimizatonAttempts, 926 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 1570 NumberOfCodeBlocks, 1570 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1722 ConstructedInterpolants, 0 QuantifiedInterpolants, 301207 SizeOfPredicates, 14 NumberOfNonLiveVariables, 2388 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 17 InterpolantComputations, 7 PerfectInterpolantSequences, 287/333 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...