./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product55_true-unreach-call_false-termination.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_9f05bff1-d2f6-41ec-8050-822ada90cb76/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_9f05bff1-d2f6-41ec-8050-822ada90cb76/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_9f05bff1-d2f6-41ec-8050-822ada90cb76/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_9f05bff1-d2f6-41ec-8050-822ada90cb76/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product55_true-unreach-call_false-termination.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_9f05bff1-d2f6-41ec-8050-822ada90cb76/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_9f05bff1-d2f6-41ec-8050-822ada90cb76/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 9385f61fe99e17c8ecdfdd2ac56623ca621310c3 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 13:41:13,013 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 13:41:13,014 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 13:41:13,021 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 13:41:13,022 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 13:41:13,022 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 13:41:13,023 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 13:41:13,024 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 13:41:13,025 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 13:41:13,026 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 13:41:13,027 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 13:41:13,027 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 13:41:13,028 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 13:41:13,028 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 13:41:13,029 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 13:41:13,030 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 13:41:13,030 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 13:41:13,031 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 13:41:13,033 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 13:41:13,034 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 13:41:13,035 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 13:41:13,036 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 13:41:13,038 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 13:41:13,038 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 13:41:13,038 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 13:41:13,039 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 13:41:13,040 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 13:41:13,040 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 13:41:13,041 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 13:41:13,042 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 13:41:13,042 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 13:41:13,043 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 13:41:13,043 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 13:41:13,043 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 13:41:13,044 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 13:41:13,044 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 13:41:13,045 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_9f05bff1-d2f6-41ec-8050-822ada90cb76/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 13:41:13,052 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 13:41:13,053 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 13:41:13,053 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 13:41:13,053 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 13:41:13,054 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 13:41:13,054 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 13:41:13,054 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 13:41:13,054 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 13:41:13,054 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 13:41:13,054 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 13:41:13,054 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 13:41:13,055 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 13:41:13,055 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 13:41:13,055 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 13:41:13,055 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 13:41:13,056 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 13:41:13,056 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 13:41:13,056 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 13:41:13,056 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 13:41:13,056 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 13:41:13,056 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 13:41:13,056 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 13:41:13,056 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 13:41:13,057 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 13:41:13,057 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 13:41:13,057 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 13:41:13,057 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 13:41:13,057 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 13:41:13,057 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 13:41:13,057 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:41:13,058 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 13:41:13,058 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 13:41:13,058 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 13:41:13,058 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 13:41:13,058 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 13:41:13,058 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 13:41:13,058 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 13:41:13,058 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_9f05bff1-d2f6-41ec-8050-822ada90cb76/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 -> 9385f61fe99e17c8ecdfdd2ac56623ca621310c3 [2018-11-18 13:41:13,082 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 13:41:13,092 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 13:41:13,094 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 13:41:13,095 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 13:41:13,096 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 13:41:13,096 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_9f05bff1-d2f6-41ec-8050-822ada90cb76/bin-2019/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product55_true-unreach-call_false-termination.cil.c [2018-11-18 13:41:13,140 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9f05bff1-d2f6-41ec-8050-822ada90cb76/bin-2019/utaipan/data/8d6e2c51d/5b274d19c00442d187ec5ce45077504d/FLAG93d104571 [2018-11-18 13:41:13,515 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 13:41:13,516 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_9f05bff1-d2f6-41ec-8050-822ada90cb76/sv-benchmarks/c/product-lines/minepump_spec4_product55_true-unreach-call_false-termination.cil.c [2018-11-18 13:41:13,526 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9f05bff1-d2f6-41ec-8050-822ada90cb76/bin-2019/utaipan/data/8d6e2c51d/5b274d19c00442d187ec5ce45077504d/FLAG93d104571 [2018-11-18 13:41:13,902 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_9f05bff1-d2f6-41ec-8050-822ada90cb76/bin-2019/utaipan/data/8d6e2c51d/5b274d19c00442d187ec5ce45077504d [2018-11-18 13:41:13,905 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 13:41:13,906 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 13:41:13,906 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 13:41:13,906 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 13:41:13,909 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 13:41:13,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:41:13" (1/1) ... [2018-11-18 13:41:13,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72de6083 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:41:13, skipping insertion in model container [2018-11-18 13:41:13,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:41:13" (1/1) ... [2018-11-18 13:41:13,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 13:41:13,949 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 13:41:14,149 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:41:14,157 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 13:41:14,255 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:41:14,272 INFO L195 MainTranslator]: Completed translation [2018-11-18 13:41:14,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:41:14 WrapperNode [2018-11-18 13:41:14,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 13:41:14,273 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 13:41:14,273 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 13:41:14,273 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 13:41:14,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:41:14" (1/1) ... [2018-11-18 13:41:14,292 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:41:14" (1/1) ... [2018-11-18 13:41:14,299 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 13:41:14,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 13:41:14,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 13:41:14,300 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 13:41:14,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:41:14" (1/1) ... [2018-11-18 13:41:14,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:41:14" (1/1) ... [2018-11-18 13:41:14,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:41:14" (1/1) ... [2018-11-18 13:41:14,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:41:14" (1/1) ... [2018-11-18 13:41:14,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:41:14" (1/1) ... [2018-11-18 13:41:14,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:41:14" (1/1) ... [2018-11-18 13:41:14,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:41:14" (1/1) ... [2018-11-18 13:41:14,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 13:41:14,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 13:41:14,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 13:41:14,326 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 13:41:14,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:41:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f05bff1-d2f6-41ec-8050-822ada90cb76/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:41:14,363 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2018-11-18 13:41:14,363 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2018-11-18 13:41:14,363 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2018-11-18 13:41:14,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2018-11-18 13:41:14,363 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 13:41:14,364 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 13:41:14,365 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2018-11-18 13:41:14,365 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2018-11-18 13:41:14,365 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2018-11-18 13:41:14,365 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2018-11-18 13:41:14,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 13:41:14,366 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2018-11-18 13:41:14,366 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2018-11-18 13:41:14,366 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2018-11-18 13:41:14,366 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2018-11-18 13:41:14,366 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2018-11-18 13:41:14,366 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2018-11-18 13:41:14,366 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2018-11-18 13:41:14,366 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2018-11-18 13:41:14,367 INFO L130 BoogieDeclarations]: Found specification of procedure test [2018-11-18 13:41:14,367 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2018-11-18 13:41:14,367 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2018-11-18 13:41:14,367 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2018-11-18 13:41:14,367 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2018-11-18 13:41:14,367 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2018-11-18 13:41:14,368 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2018-11-18 13:41:14,368 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2018-11-18 13:41:14,368 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2018-11-18 13:41:14,368 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2018-11-18 13:41:14,368 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2018-11-18 13:41:14,368 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2018-11-18 13:41:14,368 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2018-11-18 13:41:14,368 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2018-11-18 13:41:14,368 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2018-11-18 13:41:14,368 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2018-11-18 13:41:14,369 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2018-11-18 13:41:14,369 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2018-11-18 13:41:14,369 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2018-11-18 13:41:14,369 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2018-11-18 13:41:14,369 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2018-11-18 13:41:14,369 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2018-11-18 13:41:14,369 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2018-11-18 13:41:14,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2018-11-18 13:41:14,369 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2018-11-18 13:41:14,370 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2018-11-18 13:41:14,370 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2018-11-18 13:41:14,370 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2018-11-18 13:41:14,370 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2018-11-18 13:41:14,370 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2018-11-18 13:41:14,370 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2018-11-18 13:41:14,370 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2018-11-18 13:41:14,370 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2018-11-18 13:41:14,370 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2018-11-18 13:41:14,371 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2018-11-18 13:41:14,371 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2018-11-18 13:41:14,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 13:41:14,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 13:41:14,371 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2018-11-18 13:41:14,371 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2018-11-18 13:41:14,371 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2018-11-18 13:41:14,371 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2018-11-18 13:41:14,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 13:41:14,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 13:41:14,856 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 13:41:14,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:41:14 BoogieIcfgContainer [2018-11-18 13:41:14,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 13:41:14,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 13:41:14,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 13:41:14,861 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 13:41:14,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:41:13" (1/3) ... [2018-11-18 13:41:14,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40f3122d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:41:14, skipping insertion in model container [2018-11-18 13:41:14,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:41:14" (2/3) ... [2018-11-18 13:41:14,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40f3122d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:41:14, skipping insertion in model container [2018-11-18 13:41:14,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:41:14" (3/3) ... [2018-11-18 13:41:14,865 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product55_true-unreach-call_false-termination.cil.c [2018-11-18 13:41:14,874 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 13:41:14,880 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 13:41:14,893 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 13:41:14,920 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 13:41:14,920 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 13:41:14,921 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 13:41:14,921 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 13:41:14,921 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 13:41:14,921 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 13:41:14,921 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 13:41:14,921 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 13:41:14,935 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states. [2018-11-18 13:41:14,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-18 13:41:14,940 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:41:14,941 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:41:14,942 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:41:14,946 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:41:14,946 INFO L82 PathProgramCache]: Analyzing trace with hash -264817351, now seen corresponding path program 1 times [2018-11-18 13:41:14,947 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:41:14,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:41:14,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:41:14,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:41:14,985 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:41:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:41:15,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:41:15,163 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:41:15,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 13:41:15,164 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 13:41:15,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 13:41:15,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 13:41:15,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 13:41:15,182 INFO L87 Difference]: Start difference. First operand 167 states. Second operand 2 states. [2018-11-18 13:41:15,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:41:15,214 INFO L93 Difference]: Finished difference Result 308 states and 381 transitions. [2018-11-18 13:41:15,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 13:41:15,215 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2018-11-18 13:41:15,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:41:15,222 INFO L225 Difference]: With dead ends: 308 [2018-11-18 13:41:15,223 INFO L226 Difference]: Without dead ends: 154 [2018-11-18 13:41:15,225 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 13:41:15,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-11-18 13:41:15,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2018-11-18 13:41:15,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-11-18 13:41:15,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 182 transitions. [2018-11-18 13:41:15,259 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 182 transitions. Word has length 46 [2018-11-18 13:41:15,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:41:15,260 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 182 transitions. [2018-11-18 13:41:15,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 13:41:15,260 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 182 transitions. [2018-11-18 13:41:15,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-18 13:41:15,262 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:41:15,262 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:41:15,262 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:41:15,262 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:41:15,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1975079040, now seen corresponding path program 1 times [2018-11-18 13:41:15,262 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:41:15,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:41:15,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:41:15,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:41:15,263 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:41:15,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:41:15,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:41:15,339 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:41:15,339 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 13:41:15,340 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 13:41:15,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 13:41:15,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 13:41:15,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:41:15,342 INFO L87 Difference]: Start difference. First operand 154 states and 182 transitions. Second operand 3 states. [2018-11-18 13:41:15,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:41:15,364 INFO L93 Difference]: Finished difference Result 249 states and 293 transitions. [2018-11-18 13:41:15,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 13:41:15,365 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2018-11-18 13:41:15,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:41:15,366 INFO L225 Difference]: With dead ends: 249 [2018-11-18 13:41:15,367 INFO L226 Difference]: Without dead ends: 144 [2018-11-18 13:41:15,368 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:41:15,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-11-18 13:41:15,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2018-11-18 13:41:15,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-11-18 13:41:15,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 169 transitions. [2018-11-18 13:41:15,378 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 169 transitions. Word has length 48 [2018-11-18 13:41:15,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:41:15,379 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 169 transitions. [2018-11-18 13:41:15,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 13:41:15,379 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 169 transitions. [2018-11-18 13:41:15,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-11-18 13:41:15,380 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:41:15,380 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:41:15,380 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:41:15,380 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:41:15,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1310359583, now seen corresponding path program 1 times [2018-11-18 13:41:15,380 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:41:15,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:41:15,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:41:15,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:41:15,381 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:41:15,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:41:15,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:41:15,501 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:41:15,501 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 13:41:15,501 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 13:41:15,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 13:41:15,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 13:41:15,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-11-18 13:41:15,503 INFO L87 Difference]: Start difference. First operand 144 states and 169 transitions. Second operand 7 states. [2018-11-18 13:41:16,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:41:16,061 INFO L93 Difference]: Finished difference Result 435 states and 526 transitions. [2018-11-18 13:41:16,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 13:41:16,062 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2018-11-18 13:41:16,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:41:16,066 INFO L225 Difference]: With dead ends: 435 [2018-11-18 13:41:16,067 INFO L226 Difference]: Without dead ends: 315 [2018-11-18 13:41:16,068 INFO L604 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 [2018-11-18 13:41:16,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-11-18 13:41:16,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 307. [2018-11-18 13:41:16,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-11-18 13:41:16,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 371 transitions. [2018-11-18 13:41:16,103 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 371 transitions. Word has length 52 [2018-11-18 13:41:16,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:41:16,104 INFO L480 AbstractCegarLoop]: Abstraction has 307 states and 371 transitions. [2018-11-18 13:41:16,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 13:41:16,104 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 371 transitions. [2018-11-18 13:41:16,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-11-18 13:41:16,107 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:41:16,107 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:41:16,108 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:41:16,108 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:41:16,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1316696189, now seen corresponding path program 1 times [2018-11-18 13:41:16,108 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:41:16,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:41:16,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:41:16,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:41:16,109 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:41:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:41:16,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:41:16,271 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:41:16,271 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-11-18 13:41:16,272 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 13:41:16,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 13:41:16,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 13:41:16,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-11-18 13:41:16,272 INFO L87 Difference]: Start difference. First operand 307 states and 371 transitions. Second operand 10 states. [2018-11-18 13:41:16,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:41:16,775 INFO L93 Difference]: Finished difference Result 1108 states and 1440 transitions. [2018-11-18 13:41:16,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-18 13:41:16,776 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2018-11-18 13:41:16,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:41:16,780 INFO L225 Difference]: With dead ends: 1108 [2018-11-18 13:41:16,780 INFO L226 Difference]: Without dead ends: 825 [2018-11-18 13:41:16,782 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2018-11-18 13:41:16,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2018-11-18 13:41:16,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 813. [2018-11-18 13:41:16,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 813 states. [2018-11-18 13:41:16,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1021 transitions. [2018-11-18 13:41:16,834 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1021 transitions. Word has length 58 [2018-11-18 13:41:16,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:41:16,834 INFO L480 AbstractCegarLoop]: Abstraction has 813 states and 1021 transitions. [2018-11-18 13:41:16,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 13:41:16,835 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1021 transitions. [2018-11-18 13:41:16,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-11-18 13:41:16,837 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:41:16,838 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:41:16,838 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:41:16,838 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:41:16,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1482859805, now seen corresponding path program 1 times [2018-11-18 13:41:16,838 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:41:16,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:41:16,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:41:16,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:41:16,839 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:41:16,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:41:16,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:41:16,897 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:41:16,897 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 13:41:16,898 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 13:41:16,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 13:41:16,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 13:41:16,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 13:41:16,898 INFO L87 Difference]: Start difference. First operand 813 states and 1021 transitions. Second operand 4 states. [2018-11-18 13:41:17,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:41:17,290 INFO L93 Difference]: Finished difference Result 2005 states and 2740 transitions. [2018-11-18 13:41:17,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 13:41:17,291 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2018-11-18 13:41:17,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:41:17,298 INFO L225 Difference]: With dead ends: 2005 [2018-11-18 13:41:17,298 INFO L226 Difference]: Without dead ends: 1216 [2018-11-18 13:41:17,301 INFO L604 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 [2018-11-18 13:41:17,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2018-11-18 13:41:17,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1072. [2018-11-18 13:41:17,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1072 states. [2018-11-18 13:41:17,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1351 transitions. [2018-11-18 13:41:17,366 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1351 transitions. Word has length 62 [2018-11-18 13:41:17,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:41:17,367 INFO L480 AbstractCegarLoop]: Abstraction has 1072 states and 1351 transitions. [2018-11-18 13:41:17,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 13:41:17,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1351 transitions. [2018-11-18 13:41:17,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-11-18 13:41:17,369 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:41:17,369 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:41:17,369 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:41:17,369 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:41:17,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1314228714, now seen corresponding path program 1 times [2018-11-18 13:41:17,370 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:41:17,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:41:17,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:41:17,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:41:17,370 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:41:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:41:17,446 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-11-18 13:41:17,447 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:41:17,447 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:41:17,448 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 91 with the following transitions: [2018-11-18 13:41:17,449 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [42], [44], [45], [46], [47], [59], [94], [98], [104], [108], [112], [115], [120], [126], [128], [131], [133], [136], [149], [150], [153], [154], [207], [214], [217], [225], [250], [254], [255], [277], [278], [279], [280], [281], [283], [284], [285], [286], [287], [288], [289], [290], [291], [297], [309], [310], [313], [314], [315], [316], [329], [330], [331], [332], [333] [2018-11-18 13:41:17,481 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 13:41:17,481 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 13:41:18,003 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 13:41:18,004 INFO L272 AbstractInterpreter]: Visited 68 different actions 80 times. Merged at 7 different actions 7 times. Never widened. Performed 3147 root evaluator evaluations with a maximum evaluation depth of 3. Performed 3147 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 133 variables. [2018-11-18 13:41:18,017 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:41:18,018 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 13:41:18,018 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:41:18,018 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f05bff1-d2f6-41ec-8050-822ada90cb76/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:41:18,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:41:18,034 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 13:41:18,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:41:18,142 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:41:18,285 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-18 13:41:18,285 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:41:18,509 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-18 13:41:18,526 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:41:18,526 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 15 [2018-11-18 13:41:18,526 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:41:18,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 13:41:18,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 13:41:18,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2018-11-18 13:41:18,527 INFO L87 Difference]: Start difference. First operand 1072 states and 1351 transitions. Second operand 12 states. [2018-11-18 13:41:21,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:41:21,039 INFO L93 Difference]: Finished difference Result 2519 states and 3428 transitions. [2018-11-18 13:41:21,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-11-18 13:41:21,039 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 90 [2018-11-18 13:41:21,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:41:21,044 INFO L225 Difference]: With dead ends: 2519 [2018-11-18 13:41:21,045 INFO L226 Difference]: Without dead ends: 1726 [2018-11-18 13:41:21,047 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 184 SyntacticMatches, 8 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 860 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=645, Invalid=2547, Unknown=0, NotChecked=0, Total=3192 [2018-11-18 13:41:21,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2018-11-18 13:41:21,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1512. [2018-11-18 13:41:21,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1512 states. [2018-11-18 13:41:21,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 1930 transitions. [2018-11-18 13:41:21,106 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 1930 transitions. Word has length 90 [2018-11-18 13:41:21,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:41:21,106 INFO L480 AbstractCegarLoop]: Abstraction has 1512 states and 1930 transitions. [2018-11-18 13:41:21,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 13:41:21,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 1930 transitions. [2018-11-18 13:41:21,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-11-18 13:41:21,110 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:41:21,110 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-18 13:41:21,111 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:41:21,111 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:41:21,111 INFO L82 PathProgramCache]: Analyzing trace with hash 2072028044, now seen corresponding path program 1 times [2018-11-18 13:41:21,111 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:41:21,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:41:21,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:41:21,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:41:21,112 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:41:21,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:41:21,183 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 17 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-11-18 13:41:21,183 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:41:21,183 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:41:21,183 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 147 with the following transitions: [2018-11-18 13:41:21,184 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [46], [47], [59], [68], [71], [73], [74], [89], [92], [94], [98], [104], [108], [112], [118], [120], [126], [128], [131], [149], [150], [151], [152], [153], [154], [155], [157], [160], [164], [165], [204], [207], [211], [217], [220], [224], [225], [229], [232], [234], [237], [247], [255], [258], [273], [276], [277], [278], [279], [280], [281], [283], [284], [285], [286], [287], [288], [289], [290], [291], [297], [307], [308], [315], [316], [319], [320], [325], [326], [327], [328], [329], [330], [331], [332], [333], [335], [336], [337], [338], [349], [350] [2018-11-18 13:41:21,186 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 13:41:21,187 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 13:41:21,620 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 13:41:21,620 INFO L272 AbstractInterpreter]: Visited 95 different actions 217 times. Merged at 15 different actions 15 times. Never widened. Performed 6674 root evaluator evaluations with a maximum evaluation depth of 3. Performed 6674 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 2 fixpoints after 1 different actions. Largest state had 132 variables. [2018-11-18 13:41:21,630 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:41:21,630 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 13:41:21,630 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:41:21,630 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f05bff1-d2f6-41ec-8050-822ada90cb76/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:41:21,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:41:21,639 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 13:41:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:41:21,724 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:41:21,779 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-18 13:41:21,779 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:41:22,027 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-11-18 13:41:22,044 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:41:22,044 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-18 13:41:22,044 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:41:22,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 13:41:22,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 13:41:22,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-11-18 13:41:22,046 INFO L87 Difference]: Start difference. First operand 1512 states and 1930 transitions. Second operand 9 states. [2018-11-18 13:41:22,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:41:22,620 INFO L93 Difference]: Finished difference Result 3105 states and 4091 transitions. [2018-11-18 13:41:22,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 13:41:22,620 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 146 [2018-11-18 13:41:22,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:41:22,626 INFO L225 Difference]: With dead ends: 3105 [2018-11-18 13:41:22,626 INFO L226 Difference]: Without dead ends: 1617 [2018-11-18 13:41:22,629 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 290 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2018-11-18 13:41:22,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2018-11-18 13:41:22,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1524. [2018-11-18 13:41:22,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1524 states. [2018-11-18 13:41:22,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 1808 transitions. [2018-11-18 13:41:22,682 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 1808 transitions. Word has length 146 [2018-11-18 13:41:22,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:41:22,683 INFO L480 AbstractCegarLoop]: Abstraction has 1524 states and 1808 transitions. [2018-11-18 13:41:22,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 13:41:22,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 1808 transitions. [2018-11-18 13:41:22,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-11-18 13:41:22,685 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:41:22,686 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:41:22,686 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:41:22,686 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:41:22,686 INFO L82 PathProgramCache]: Analyzing trace with hash -463304545, now seen corresponding path program 1 times [2018-11-18 13:41:22,686 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:41:22,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:41:22,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:41:22,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:41:22,687 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:41:22,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:41:22,784 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-18 13:41:22,785 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:41:22,785 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:41:22,785 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 156 with the following transitions: [2018-11-18 13:41:22,785 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [46], [47], [48], [50], [53], [57], [58], [59], [62], [64], [65], [68], [71], [73], [74], [77], [79], [85], [89], [92], [93], [94], [98], [104], [108], [112], [118], [120], [126], [128], [131], [147], [148], [149], [150], [151], [152], [153], [154], [155], [157], [162], [164], [165], [173], [174], [204], [207], [211], [217], [220], [224], [225], [229], [232], [234], [237], [244], [247], [255], [258], [261], [263], [269], [273], [276], [277], [278], [279], [280], [281], [283], [284], [285], [286], [287], [288], [289], [290], [291], [295], [296], [297], [299], [300], [301], [302], [305], [306], [307], [308], [315], [316], [319], [320], [325], [326], [327], [328], [329], [330], [331], [332], [333], [335], [336], [337], [338], [341], [342], [343], [344], [347], [348], [349], [350] [2018-11-18 13:41:22,789 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 13:41:22,789 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 13:41:22,891 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-18 13:41:22,891 INFO L272 AbstractInterpreter]: Visited 58 different actions 58 times. Never merged. Never widened. Performed 1977 root evaluator evaluations with a maximum evaluation depth of 3. Performed 1977 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 132 variables. [2018-11-18 13:41:22,902 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:41:22,902 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-18 13:41:23,084 INFO L227 lantSequenceWeakener]: Weakened 67 states. On average, predicates are now at 96.42% of their original sizes. [2018-11-18 13:41:23,084 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-18 13:41:23,150 INFO L415 sIntCurrentIteration]: We unified 154 AI predicates to 154 [2018-11-18 13:41:23,150 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-18 13:41:23,151 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 13:41:23,151 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2018-11-18 13:41:23,151 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 13:41:23,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 13:41:23,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 13:41:23,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-11-18 13:41:23,152 INFO L87 Difference]: Start difference. First operand 1524 states and 1808 transitions. Second operand 9 states. [2018-11-18 13:41:24,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:41:24,328 INFO L93 Difference]: Finished difference Result 3190 states and 3803 transitions. [2018-11-18 13:41:24,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 13:41:24,329 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 155 [2018-11-18 13:41:24,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:41:24,333 INFO L225 Difference]: With dead ends: 3190 [2018-11-18 13:41:24,333 INFO L226 Difference]: Without dead ends: 1690 [2018-11-18 13:41:24,336 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 157 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-11-18 13:41:24,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1690 states. [2018-11-18 13:41:24,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1690 to 1679. [2018-11-18 13:41:24,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1679 states. [2018-11-18 13:41:24,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1679 states to 1679 states and 1987 transitions. [2018-11-18 13:41:24,402 INFO L78 Accepts]: Start accepts. Automaton has 1679 states and 1987 transitions. Word has length 155 [2018-11-18 13:41:24,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:41:24,402 INFO L480 AbstractCegarLoop]: Abstraction has 1679 states and 1987 transitions. [2018-11-18 13:41:24,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 13:41:24,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1679 states and 1987 transitions. [2018-11-18 13:41:24,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-11-18 13:41:24,406 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:41:24,406 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:41:24,406 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:41:24,407 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:41:24,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1937916200, now seen corresponding path program 1 times [2018-11-18 13:41:24,407 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:41:24,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:41:24,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:41:24,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:41:24,408 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:41:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:41:24,554 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-18 13:41:24,554 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:41:24,554 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:41:24,554 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 160 with the following transitions: [2018-11-18 13:41:24,555 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [46], [47], [48], [50], [53], [57], [58], [59], [62], [64], [65], [68], [72], [73], [74], [77], [79], [85], [89], [92], [93], [94], [98], [104], [108], [112], [115], [118], [120], [126], [128], [131], [147], [148], [149], [150], [151], [152], [153], [154], [155], [157], [162], [164], [165], [173], [174], [204], [207], [211], [217], [220], [224], [225], [229], [232], [234], [237], [244], [247], [250], [254], [255], [258], [261], [263], [269], [273], [276], [277], [278], [279], [280], [281], [283], [284], [285], [286], [287], [288], [289], [290], [291], [295], [296], [297], [299], [300], [301], [302], [305], [306], [307], [308], [309], [310], [315], [316], [319], [320], [325], [326], [327], [328], [329], [330], [331], [332], [333], [335], [336], [337], [338], [341], [342], [343], [344], [347], [348], [349], [350] [2018-11-18 13:41:24,557 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 13:41:24,558 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 13:41:25,703 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 13:41:25,703 INFO L272 AbstractInterpreter]: Visited 134 different actions 648 times. Merged at 19 different actions 53 times. Never widened. Performed 20335 root evaluator evaluations with a maximum evaluation depth of 5. Performed 20335 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 9 fixpoints after 3 different actions. Largest state had 132 variables. [2018-11-18 13:41:25,722 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:41:25,722 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 13:41:25,722 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:41:25,722 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f05bff1-d2f6-41ec-8050-822ada90cb76/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:41:25,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:41:25,731 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 13:41:25,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:41:25,796 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:41:25,843 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:41:25,843 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:41:26,063 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-18 13:41:26,089 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:41:26,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 17 [2018-11-18 13:41:26,090 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:41:26,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-18 13:41:26,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-18 13:41:26,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2018-11-18 13:41:26,091 INFO L87 Difference]: Start difference. First operand 1679 states and 1987 transitions. Second operand 14 states. [2018-11-18 13:41:27,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:41:27,901 INFO L93 Difference]: Finished difference Result 3664 states and 4689 transitions. [2018-11-18 13:41:27,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-18 13:41:27,902 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 159 [2018-11-18 13:41:27,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:41:27,910 INFO L225 Difference]: With dead ends: 3664 [2018-11-18 13:41:27,910 INFO L226 Difference]: Without dead ends: 2431 [2018-11-18 13:41:27,913 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 314 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=265, Invalid=995, Unknown=0, NotChecked=0, Total=1260 [2018-11-18 13:41:27,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2018-11-18 13:41:28,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 1971. [2018-11-18 13:41:28,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1971 states. [2018-11-18 13:41:28,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1971 states to 1971 states and 2320 transitions. [2018-11-18 13:41:28,016 INFO L78 Accepts]: Start accepts. Automaton has 1971 states and 2320 transitions. Word has length 159 [2018-11-18 13:41:28,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:41:28,016 INFO L480 AbstractCegarLoop]: Abstraction has 1971 states and 2320 transitions. [2018-11-18 13:41:28,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-18 13:41:28,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1971 states and 2320 transitions. [2018-11-18 13:41:28,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-11-18 13:41:28,020 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:41:28,020 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:41:28,020 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:41:28,021 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:41:28,021 INFO L82 PathProgramCache]: Analyzing trace with hash -460640069, now seen corresponding path program 1 times [2018-11-18 13:41:28,021 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:41:28,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:41:28,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:41:28,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:41:28,022 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:41:28,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:41:28,172 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-18 13:41:28,172 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:41:28,172 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:41:28,172 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 160 with the following transitions: [2018-11-18 13:41:28,172 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [46], [47], [48], [50], [53], [57], [58], [59], [62], [64], [65], [68], [71], [73], [74], [77], [79], [85], [89], [92], [93], [94], [98], [104], [108], [112], [118], [120], [123], [126], [128], [131], [147], [148], [149], [150], [151], [152], [153], [154], [155], [157], [162], [164], [165], [170], [172], [173], [174], [204], [207], [211], [217], [220], [224], [225], [229], [232], [234], [237], [244], [247], [255], [258], [261], [263], [269], [273], [276], [277], [278], [279], [280], [281], [283], [284], [285], [286], [287], [288], [289], [290], [291], [295], [296], [297], [299], [300], [301], [302], [305], [306], [307], [308], [311], [312], [315], [316], [319], [320], [325], [326], [327], [328], [329], [330], [331], [332], [333], [335], [336], [337], [338], [341], [342], [343], [344], [347], [348], [349], [350] [2018-11-18 13:41:28,175 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 13:41:28,175 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 13:41:28,350 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-18 13:41:28,351 INFO L272 AbstractInterpreter]: Visited 63 different actions 90 times. Merged at 3 different actions 3 times. Never widened. Performed 5153 root evaluator evaluations with a maximum evaluation depth of 3. Performed 5153 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 132 variables. [2018-11-18 13:41:28,362 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:41:28,362 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-18 13:41:28,501 INFO L227 lantSequenceWeakener]: Weakened 71 states. On average, predicates are now at 96.42% of their original sizes. [2018-11-18 13:41:28,501 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-18 13:41:28,565 INFO L415 sIntCurrentIteration]: We unified 158 AI predicates to 158 [2018-11-18 13:41:28,565 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-18 13:41:28,565 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 13:41:28,566 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [8] total 18 [2018-11-18 13:41:28,566 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 13:41:28,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 13:41:28,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 13:41:28,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-11-18 13:41:28,567 INFO L87 Difference]: Start difference. First operand 1971 states and 2320 transitions. Second operand 12 states. [2018-11-18 13:41:30,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:41:30,625 INFO L93 Difference]: Finished difference Result 3896 states and 4616 transitions. [2018-11-18 13:41:30,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-18 13:41:30,625 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 159 [2018-11-18 13:41:30,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:41:30,632 INFO L225 Difference]: With dead ends: 3896 [2018-11-18 13:41:30,632 INFO L226 Difference]: Without dead ends: 2104 [2018-11-18 13:41:30,635 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 165 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2018-11-18 13:41:30,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2104 states. [2018-11-18 13:41:30,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2104 to 2085. [2018-11-18 13:41:30,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2018-11-18 13:41:30,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 2448 transitions. [2018-11-18 13:41:30,712 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 2448 transitions. Word has length 159 [2018-11-18 13:41:30,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:41:30,713 INFO L480 AbstractCegarLoop]: Abstraction has 2085 states and 2448 transitions. [2018-11-18 13:41:30,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 13:41:30,713 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 2448 transitions. [2018-11-18 13:41:30,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-11-18 13:41:30,715 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:41:30,715 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:41:30,715 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:41:30,715 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:41:30,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1319936611, now seen corresponding path program 1 times [2018-11-18 13:41:30,716 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:41:30,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:41:30,716 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:41:30,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:41:30,717 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:41:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:41:30,766 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-18 13:41:30,766 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:41:30,766 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 13:41:30,766 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 13:41:30,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 13:41:30,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 13:41:30,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 13:41:30,767 INFO L87 Difference]: Start difference. First operand 2085 states and 2448 transitions. Second operand 4 states. [2018-11-18 13:41:30,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:41:30,910 INFO L93 Difference]: Finished difference Result 2356 states and 2780 transitions. [2018-11-18 13:41:30,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 13:41:30,911 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 165 [2018-11-18 13:41:30,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:41:30,913 INFO L225 Difference]: With dead ends: 2356 [2018-11-18 13:41:30,914 INFO L226 Difference]: Without dead ends: 872 [2018-11-18 13:41:30,916 INFO L604 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 [2018-11-18 13:41:30,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2018-11-18 13:41:30,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 815. [2018-11-18 13:41:30,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 815 states. [2018-11-18 13:41:30,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 933 transitions. [2018-11-18 13:41:30,946 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 933 transitions. Word has length 165 [2018-11-18 13:41:30,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:41:30,946 INFO L480 AbstractCegarLoop]: Abstraction has 815 states and 933 transitions. [2018-11-18 13:41:30,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 13:41:30,946 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 933 transitions. [2018-11-18 13:41:30,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-11-18 13:41:30,949 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:41:30,949 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-18 13:41:30,949 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:41:30,949 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:41:30,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1592696290, now seen corresponding path program 1 times [2018-11-18 13:41:30,949 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:41:30,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:41:30,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:41:30,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:41:30,950 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:41:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:41:31,038 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 43 proven. 10 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-11-18 13:41:31,038 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:41:31,038 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:41:31,038 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 230 with the following transitions: [2018-11-18 13:41:31,039 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [46], [47], [48], [50], [53], [55], [57], [58], [59], [62], [64], [65], [68], [72], [73], [74], [77], [79], [85], [89], [92], [93], [94], [98], [104], [108], [112], [115], [118], [120], [126], [128], [131], [147], [148], [149], [150], [151], [152], [153], [154], [155], [157], [162], [164], [165], [173], [174], [204], [207], [211], [217], [220], [224], [225], [229], [232], [234], [237], [244], [247], [250], [254], [255], [258], [261], [263], [269], [273], [276], [277], [278], [279], [280], [281], [283], [284], [285], [286], [287], [288], [289], [290], [291], [295], [296], [297], [299], [300], [301], [302], [305], [306], [307], [308], [309], [310], [315], [316], [319], [320], [325], [326], [327], [328], [329], [330], [331], [332], [333], [335], [336], [337], [338], [341], [342], [343], [344], [347], [348], [349], [350] [2018-11-18 13:41:31,040 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 13:41:31,040 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 13:41:31,825 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 13:41:31,826 INFO L272 AbstractInterpreter]: Visited 135 different actions 666 times. Merged at 24 different actions 68 times. Never widened. Performed 20416 root evaluator evaluations with a maximum evaluation depth of 5. Performed 20416 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 12 fixpoints after 4 different actions. Largest state had 132 variables. [2018-11-18 13:41:31,827 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:41:31,827 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 13:41:31,827 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:41:31,827 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f05bff1-d2f6-41ec-8050-822ada90cb76/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:41:31,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:41:31,834 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 13:41:31,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:41:31,940 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:41:32,023 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-11-18 13:41:32,024 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:41:32,203 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 43 proven. 10 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-11-18 13:41:32,219 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:41:32,219 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [9, 6] total 13 [2018-11-18 13:41:32,219 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 13:41:32,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 13:41:32,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 13:41:32,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2018-11-18 13:41:32,220 INFO L87 Difference]: Start difference. First operand 815 states and 933 transitions. Second operand 6 states. [2018-11-18 13:41:32,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:41:32,273 INFO L93 Difference]: Finished difference Result 1458 states and 1698 transitions. [2018-11-18 13:41:32,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 13:41:32,274 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 229 [2018-11-18 13:41:32,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:41:32,277 INFO L225 Difference]: With dead ends: 1458 [2018-11-18 13:41:32,277 INFO L226 Difference]: Without dead ends: 793 [2018-11-18 13:41:32,280 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 453 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2018-11-18 13:41:32,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2018-11-18 13:41:32,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 793. [2018-11-18 13:41:32,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2018-11-18 13:41:32,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 907 transitions. [2018-11-18 13:41:32,318 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 907 transitions. Word has length 229 [2018-11-18 13:41:32,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:41:32,318 INFO L480 AbstractCegarLoop]: Abstraction has 793 states and 907 transitions. [2018-11-18 13:41:32,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 13:41:32,318 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 907 transitions. [2018-11-18 13:41:32,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-11-18 13:41:32,322 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:41:32,322 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:41:32,322 INFO L423 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:41:32,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:41:32,323 INFO L82 PathProgramCache]: Analyzing trace with hash -488538448, now seen corresponding path program 1 times [2018-11-18 13:41:32,323 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:41:32,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:41:32,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:41:32,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:41:32,324 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:41:32,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:41:32,475 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 70 proven. 14 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2018-11-18 13:41:32,476 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:41:32,476 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:41:32,476 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 265 with the following transitions: [2018-11-18 13:41:32,476 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [46], [47], [48], [50], [53], [57], [58], [59], [62], [64], [65], [66], [67], [68], [71], [72], [73], [74], [77], [79], [82], [85], [89], [92], [93], [94], [98], [104], [108], [112], [115], [118], [120], [126], [128], [131], [147], [148], [149], [150], [151], [152], [153], [154], [155], [157], [162], [164], [165], [173], [174], [204], [207], [211], [217], [220], [224], [225], [229], [232], [234], [237], [244], [247], [250], [254], [255], [258], [261], [263], [269], [273], [276], [277], [278], [279], [280], [281], [283], [284], [285], [286], [287], [288], [289], [290], [291], [295], [296], [297], [299], [300], [301], [302], [303], [304], [305], [306], [307], [308], [309], [310], [315], [316], [319], [320], [325], [326], [327], [328], [329], [330], [331], [332], [333], [335], [336], [337], [338], [341], [342], [343], [344], [347], [348], [349], [350] [2018-11-18 13:41:32,478 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 13:41:32,478 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 13:41:33,650 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 13:41:33,650 INFO L272 AbstractInterpreter]: Visited 140 different actions 801 times. Merged at 24 different actions 103 times. Never widened. Performed 31064 root evaluator evaluations with a maximum evaluation depth of 5. Performed 31064 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 13 fixpoints after 5 different actions. Largest state had 132 variables. [2018-11-18 13:41:33,654 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:41:33,654 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 13:41:33,654 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:41:33,654 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f05bff1-d2f6-41ec-8050-822ada90cb76/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:41:33,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:41:33,661 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 13:41:33,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:41:33,739 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:41:33,786 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-18 13:41:33,786 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:41:34,033 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 78 proven. 6 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2018-11-18 13:41:34,050 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:41:34,050 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 5] total 12 [2018-11-18 13:41:34,050 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 13:41:34,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 13:41:34,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 13:41:34,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-11-18 13:41:34,051 INFO L87 Difference]: Start difference. First operand 793 states and 907 transitions. Second operand 5 states. [2018-11-18 13:41:34,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:41:34,073 INFO L93 Difference]: Finished difference Result 1017 states and 1172 transitions. [2018-11-18 13:41:34,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 13:41:34,074 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 264 [2018-11-18 13:41:34,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:41:34,074 INFO L225 Difference]: With dead ends: 1017 [2018-11-18 13:41:34,074 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 13:41:34,076 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 526 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-11-18 13:41:34,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 13:41:34,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 13:41:34,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 13:41:34,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 13:41:34,077 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 264 [2018-11-18 13:41:34,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:41:34,077 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 13:41:34,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 13:41:34,078 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 13:41:34,078 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 13:41:34,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 13:41:34,291 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:41:34,321 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:41:34,332 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:41:34,364 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:41:34,365 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:41:34,382 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:41:34,389 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:41:34,390 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:41:34,470 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:41:34,838 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:41:34,843 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:41:34,847 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:41:34,848 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:41:34,862 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:41:34,863 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:41:34,865 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:41:34,897 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:41:34,926 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:41:34,930 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:41:34,936 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:41:34,941 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:41:34,947 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:41:34,954 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:41:34,967 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:41:34,969 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:41:34,972 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:41:34,973 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:41:35,010 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:41:35,012 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:41:35,019 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:41:35,879 WARN L180 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 27 [2018-11-18 13:41:36,128 WARN L180 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 35 [2018-11-18 13:41:37,011 WARN L180 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 31 [2018-11-18 13:41:37,178 INFO L428 ceAbstractionStarter]: At program point select_helpersFINAL(lines 409 415) the Hoare annotation is: true [2018-11-18 13:41:37,178 INFO L425 ceAbstractionStarter]: For program point select_helpersEXIT(lines 409 415) no Hoare annotation was computed. [2018-11-18 13:41:37,178 INFO L425 ceAbstractionStarter]: For program point valid_productEXIT(lines 416 424) no Hoare annotation was computed. [2018-11-18 13:41:37,178 INFO L428 ceAbstractionStarter]: At program point valid_productENTRY(lines 416 424) the Hoare annotation is: true [2018-11-18 13:41:37,178 INFO L425 ceAbstractionStarter]: For program point valid_productFINAL(lines 416 424) no Hoare annotation was computed. [2018-11-18 13:41:37,179 INFO L428 ceAbstractionStarter]: At program point __utac_acc__Specification4_spec__1ENTRY(lines 362 386) the Hoare annotation is: true [2018-11-18 13:41:37,179 INFO L421 ceAbstractionStarter]: At program point L376(line 376) the Hoare annotation is: (let ((.cse0 (not (= ~systemActive~0 1))) (.cse1 (not (= 0 ~pumpRunning~0)))) (and (or (< ~pumpRunning~0 1) (< ~waterLevel~0 2) .cse0) (or .cse1 (< ~waterLevel~0 1) .cse0) (or .cse1 (not (= ~systemActive~0 0))))) [2018-11-18 13:41:37,179 INFO L425 ceAbstractionStarter]: For program point L374(lines 374 380) no Hoare annotation was computed. [2018-11-18 13:41:37,179 INFO L421 ceAbstractionStarter]: At program point L372(line 372) the Hoare annotation is: (let ((.cse0 (not (= ~systemActive~0 1))) (.cse1 (not (= 0 ~pumpRunning~0))) (.cse2 (< ~waterLevel~0 1))) (and (or (< ~pumpRunning~0 1) (< ~waterLevel~0 2) .cse0) (or .cse1 .cse2 .cse0) (or .cse1 (not (= ~systemActive~0 0)) .cse2))) [2018-11-18 13:41:37,179 INFO L425 ceAbstractionStarter]: For program point L372-1(line 372) no Hoare annotation was computed. [2018-11-18 13:41:37,179 INFO L425 ceAbstractionStarter]: For program point __utac_acc__Specification4_spec__1EXIT(lines 362 386) no Hoare annotation was computed. [2018-11-18 13:41:37,179 INFO L425 ceAbstractionStarter]: For program point L370(lines 370 383) no Hoare annotation was computed. [2018-11-18 13:41:37,179 INFO L425 ceAbstractionStarter]: For program point L370-1(lines 362 386) no Hoare annotation was computed. [2018-11-18 13:41:37,179 INFO L428 ceAbstractionStarter]: At program point L368(line 368) the Hoare annotation is: true [2018-11-18 13:41:37,179 INFO L425 ceAbstractionStarter]: For program point L368-1(line 368) no Hoare annotation was computed. [2018-11-18 13:41:37,180 INFO L421 ceAbstractionStarter]: At program point L513(line 513) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= ~methaneLevelCritical~0 0) (= ~waterLevel~0 |old(~waterLevel~0)|) (= ~systemActive~0 1) (= |old(~pumpRunning~0)| ~pumpRunning~0)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-11-18 13:41:37,180 INFO L421 ceAbstractionStarter]: At program point L513-1(line 513) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= ~methaneLevelCritical~0 0) (= ~waterLevel~0 |old(~waterLevel~0)|) (= ~systemActive~0 1) (= |old(~pumpRunning~0)| ~pumpRunning~0)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-11-18 13:41:37,180 INFO L421 ceAbstractionStarter]: At program point mainENTRY(lines 507 529) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= ~methaneLevelCritical~0 0) (= ~waterLevel~0 |old(~waterLevel~0)|) (= ~systemActive~0 1) (= |old(~pumpRunning~0)| ~pumpRunning~0)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-11-18 13:41:37,180 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 507 529) no Hoare annotation was computed. [2018-11-18 13:41:37,180 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 507 529) no Hoare annotation was computed. [2018-11-18 13:41:37,180 INFO L421 ceAbstractionStarter]: At program point L519(line 519) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= ~methaneLevelCritical~0 0) (= ~waterLevel~0 |old(~waterLevel~0)|) (= main_~tmp~7 ~systemActive~0) (= ~systemActive~0 1) (= |old(~pumpRunning~0)| ~pumpRunning~0)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-11-18 13:41:37,180 INFO L421 ceAbstractionStarter]: At program point L519-1(line 519) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= ~methaneLevelCritical~0 0) (= ~waterLevel~0 |old(~waterLevel~0)|) (= main_~tmp~7 ~systemActive~0) (= ~systemActive~0 1) (= |old(~pumpRunning~0)| ~pumpRunning~0)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-11-18 13:41:37,180 INFO L425 ceAbstractionStarter]: For program point L517(lines 517 524) no Hoare annotation was computed. [2018-11-18 13:41:37,181 INFO L425 ceAbstractionStarter]: For program point L517-1(lines 517 524) no Hoare annotation was computed. [2018-11-18 13:41:37,181 INFO L425 ceAbstractionStarter]: For program point L515(line 515) no Hoare annotation was computed. [2018-11-18 13:41:37,181 INFO L421 ceAbstractionStarter]: At program point L514(line 514) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= ~methaneLevelCritical~0 0) (= ~waterLevel~0 |old(~waterLevel~0)|) (= ~systemActive~0 1) (= |old(~pumpRunning~0)| ~pumpRunning~0)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-11-18 13:41:37,181 INFO L425 ceAbstractionStarter]: For program point stopSystemEXIT(lines 344 358) no Hoare annotation was computed. [2018-11-18 13:41:37,181 INFO L421 ceAbstractionStarter]: At program point L350(line 350) the Hoare annotation is: (let ((.cse0 (< |old(~pumpRunning~0)| 1)) (.cse1 (= |old(~pumpRunning~0)| ~pumpRunning~0))) (and (or (or .cse0 (< ~waterLevel~0 2)) (= |old(~systemActive~0)| 0) (and (not (= ~systemActive~0 0)) .cse1)) (not (= 0 |old(~pumpRunning~0)|)) (or .cse0 (and (= ~systemActive~0 1) .cse1) (not (= |old(~systemActive~0)| 1))))) [2018-11-18 13:41:37,181 INFO L425 ceAbstractionStarter]: For program point L348(lines 348 354) no Hoare annotation was computed. [2018-11-18 13:41:37,181 INFO L421 ceAbstractionStarter]: At program point stopSystemENTRY(lines 344 358) the Hoare annotation is: (let ((.cse4 (= ~systemActive~0 0)) (.cse5 (= |old(~pumpRunning~0)| ~pumpRunning~0))) (let ((.cse2 (and (not .cse4) .cse5)) (.cse1 (= |old(~systemActive~0)| 0)) (.cse3 (not (= 0 |old(~pumpRunning~0)|))) (.cse0 (< |old(~pumpRunning~0)| 1))) (and (or (or .cse0 (< ~waterLevel~0 2)) .cse1 .cse2) (or .cse1 .cse3 .cse2) (or (not .cse1) .cse3 (and .cse4 .cse5)) (or .cse0 (and (= ~systemActive~0 1) .cse5) (not (= |old(~systemActive~0)| 1)))))) [2018-11-18 13:41:37,181 INFO L425 ceAbstractionStarter]: For program point stopSystemFINAL(lines 344 358) no Hoare annotation was computed. [2018-11-18 13:41:37,181 INFO L425 ceAbstractionStarter]: For program point isPumpRunningEXIT(lines 261 269) no Hoare annotation was computed. [2018-11-18 13:41:37,181 INFO L428 ceAbstractionStarter]: At program point isPumpRunningENTRY(lines 261 269) the Hoare annotation is: true [2018-11-18 13:41:37,182 INFO L425 ceAbstractionStarter]: For program point isPumpRunningFINAL(lines 261 269) no Hoare annotation was computed. [2018-11-18 13:41:37,182 INFO L425 ceAbstractionStarter]: For program point L334(lines 334 338) no Hoare annotation was computed. [2018-11-18 13:41:37,182 INFO L428 ceAbstractionStarter]: At program point L332(line 332) the Hoare annotation is: true [2018-11-18 13:41:37,182 INFO L425 ceAbstractionStarter]: For program point L334-2(lines 334 338) no Hoare annotation was computed. [2018-11-18 13:41:37,182 INFO L425 ceAbstractionStarter]: For program point L332-1(line 332) no Hoare annotation was computed. [2018-11-18 13:41:37,182 INFO L428 ceAbstractionStarter]: At program point isLowWaterLevelENTRY(lines 325 343) the Hoare annotation is: true [2018-11-18 13:41:37,182 INFO L425 ceAbstractionStarter]: For program point isLowWaterLevelEXIT(lines 325 343) no Hoare annotation was computed. [2018-11-18 13:41:37,182 INFO L425 ceAbstractionStarter]: For program point isLowWaterLevelFINAL(lines 325 343) no Hoare annotation was computed. [2018-11-18 13:41:37,182 INFO L425 ceAbstractionStarter]: For program point select_featuresEXIT(lines 402 408) no Hoare annotation was computed. [2018-11-18 13:41:37,182 INFO L428 ceAbstractionStarter]: At program point select_featuresFINAL(lines 402 408) the Hoare annotation is: true [2018-11-18 13:41:37,182 INFO L421 ceAbstractionStarter]: At program point runTestENTRY(lines 497 506) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= ~methaneLevelCritical~0 0) (= ~waterLevel~0 |old(~waterLevel~0)|) (= ~systemActive~0 1) (= |old(~pumpRunning~0)| ~pumpRunning~0)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-11-18 13:41:37,182 INFO L425 ceAbstractionStarter]: For program point runTestEXIT(lines 497 506) no Hoare annotation was computed. [2018-11-18 13:41:37,183 INFO L425 ceAbstractionStarter]: For program point runTestFINAL(lines 497 506) no Hoare annotation was computed. [2018-11-18 13:41:37,183 INFO L428 ceAbstractionStarter]: At program point isMethaneAlarmENTRY(lines 250 260) the Hoare annotation is: true [2018-11-18 13:41:37,183 INFO L428 ceAbstractionStarter]: At program point L255(line 255) the Hoare annotation is: true [2018-11-18 13:41:37,183 INFO L425 ceAbstractionStarter]: For program point L255-1(line 255) no Hoare annotation was computed. [2018-11-18 13:41:37,183 INFO L425 ceAbstractionStarter]: For program point isMethaneAlarmEXIT(lines 250 260) no Hoare annotation was computed. [2018-11-18 13:41:37,183 INFO L425 ceAbstractionStarter]: For program point isMethaneAlarmFINAL(lines 250 260) no Hoare annotation was computed. [2018-11-18 13:41:37,183 INFO L421 ceAbstractionStarter]: At program point deactivatePumpENTRY(lines 242 249) the Hoare annotation is: (let ((.cse0 (< |old(~pumpRunning~0)| 1)) (.cse1 (= |old(~pumpRunning~0)| ~pumpRunning~0))) (and (or .cse0 .cse1 (not (= ~systemActive~0 1))) (or (or .cse0 (< ~waterLevel~0 2)) (= ~systemActive~0 0) .cse1))) [2018-11-18 13:41:37,183 INFO L425 ceAbstractionStarter]: For program point deactivatePumpEXIT(lines 242 249) no Hoare annotation was computed. [2018-11-18 13:41:37,183 INFO L425 ceAbstractionStarter]: For program point deactivatePumpFINAL(lines 242 249) no Hoare annotation was computed. [2018-11-18 13:41:37,183 INFO L425 ceAbstractionStarter]: For program point isHighWaterSensorDryEXIT(lines 976 989) no Hoare annotation was computed. [2018-11-18 13:41:37,183 INFO L425 ceAbstractionStarter]: For program point L980(lines 980 986) no Hoare annotation was computed. [2018-11-18 13:41:37,183 INFO L428 ceAbstractionStarter]: At program point isHighWaterSensorDryENTRY(lines 976 989) the Hoare annotation is: true [2018-11-18 13:41:37,184 INFO L425 ceAbstractionStarter]: For program point isHighWaterSensorDryFINAL(lines 976 989) no Hoare annotation was computed. [2018-11-18 13:41:37,184 INFO L421 ceAbstractionStarter]: At program point L223(line 223) the Hoare annotation is: (let ((.cse0 (< ~waterLevel~0 1)) (.cse1 (not (= ~systemActive~0 1)))) (and (or (not (= 0 |old(~pumpRunning~0)|)) .cse0 .cse1) (or (< |old(~pumpRunning~0)| 1) (= |old(~pumpRunning~0)| ~pumpRunning~0) .cse0 .cse1))) [2018-11-18 13:41:37,184 INFO L421 ceAbstractionStarter]: At program point L219(line 219) the Hoare annotation is: (let ((.cse0 (< ~waterLevel~0 1)) (.cse1 (not (= ~systemActive~0 1)))) (and (or (not (= 0 |old(~pumpRunning~0)|)) .cse0 .cse1) (or (< |old(~pumpRunning~0)| 1) (= |old(~pumpRunning~0)| ~pumpRunning~0) .cse0 .cse1))) [2018-11-18 13:41:37,184 INFO L425 ceAbstractionStarter]: For program point L217(lines 217 225) no Hoare annotation was computed. [2018-11-18 13:41:37,184 INFO L421 ceAbstractionStarter]: At program point L215(line 215) the Hoare annotation is: (let ((.cse0 (< ~waterLevel~0 1)) (.cse1 (not (= ~systemActive~0 1)))) (and (or (not (= 0 |old(~pumpRunning~0)|)) .cse0 .cse1) (or (< |old(~pumpRunning~0)| 1) (= |old(~pumpRunning~0)| ~pumpRunning~0) .cse0 .cse1))) [2018-11-18 13:41:37,184 INFO L425 ceAbstractionStarter]: For program point processEnvironmentEXIT(lines 209 233) no Hoare annotation was computed. [2018-11-18 13:41:37,184 INFO L425 ceAbstractionStarter]: For program point L215-1(line 215) no Hoare annotation was computed. [2018-11-18 13:41:37,184 INFO L425 ceAbstractionStarter]: For program point L213(lines 213 230) no Hoare annotation was computed. [2018-11-18 13:41:37,184 INFO L421 ceAbstractionStarter]: At program point processEnvironmentENTRY(lines 209 233) the Hoare annotation is: (let ((.cse0 (= |old(~pumpRunning~0)| ~pumpRunning~0)) (.cse1 (< ~waterLevel~0 1)) (.cse2 (not (= ~systemActive~0 1)))) (and (or .cse0 (not (= 0 |old(~pumpRunning~0)|)) .cse1 .cse2) (or (< |old(~pumpRunning~0)| 1) .cse0 .cse1 .cse2))) [2018-11-18 13:41:37,184 INFO L421 ceAbstractionStarter]: At program point L228(line 228) the Hoare annotation is: (let ((.cse0 (< ~waterLevel~0 1)) (.cse1 (not (= ~systemActive~0 1)))) (and (or (not (= 0 |old(~pumpRunning~0)|)) (= |old(~pumpRunning~0)| ~pumpRunning~0) .cse0 .cse1) (or (< |old(~pumpRunning~0)| 1) .cse0 .cse1))) [2018-11-18 13:41:37,185 INFO L425 ceAbstractionStarter]: For program point L228-1(lines 209 233) no Hoare annotation was computed. [2018-11-18 13:41:37,185 INFO L425 ceAbstractionStarter]: For program point processEnvironment__wrappee__baseEXIT(lines 149 155) no Hoare annotation was computed. [2018-11-18 13:41:37,185 INFO L428 ceAbstractionStarter]: At program point processEnvironment__wrappee__baseFINAL(lines 149 155) the Hoare annotation is: true [2018-11-18 13:41:37,185 INFO L421 ceAbstractionStarter]: At program point testENTRY(lines 45 110) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= ~methaneLevelCritical~0 0) (= ~waterLevel~0 |old(~waterLevel~0)|) (= ~systemActive~0 1) (= |old(~pumpRunning~0)| ~pumpRunning~0)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-11-18 13:41:37,185 INFO L421 ceAbstractionStarter]: At program point L93(line 93) the Hoare annotation is: (let ((.cse1 (<= 1 ~pumpRunning~0)) (.cse0 (= test_~splverifierCounter~0 0))) (or (and (= 0 ~pumpRunning~0) .cse0) (not (= |old(~systemActive~0)| 1)) (not (= 0 |old(~pumpRunning~0)|)) (and .cse1 (<= 2 ~waterLevel~0) (not (= ~systemActive~0 0)) .cse0) (and .cse1 (= ~systemActive~0 1) .cse0) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0)))) [2018-11-18 13:41:37,185 INFO L425 ceAbstractionStarter]: For program point L91(lines 91 97) no Hoare annotation was computed. [2018-11-18 13:41:37,185 INFO L421 ceAbstractionStarter]: At program point L91-1(lines 85 98) the Hoare annotation is: (let ((.cse2 (= 0 ~pumpRunning~0)) (.cse0 (= ~systemActive~0 1)) (.cse1 (= test_~splverifierCounter~0 0))) (or (and (<= 1 ~pumpRunning~0) (<= 2 ~waterLevel~0) .cse0 .cse1) (not (= |old(~systemActive~0)| 1)) (not (= 0 |old(~pumpRunning~0)|)) (and (= ~systemActive~0 0) .cse2 .cse1) (and .cse2 (<= 1 ~waterLevel~0) .cse0 .cse1) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0)))) [2018-11-18 13:41:37,185 INFO L425 ceAbstractionStarter]: For program point L56(lines 55 102) no Hoare annotation was computed. [2018-11-18 13:41:37,185 INFO L425 ceAbstractionStarter]: For program point testFINAL(lines 45 110) no Hoare annotation was computed. [2018-11-18 13:41:37,185 INFO L425 ceAbstractionStarter]: For program point L85(lines 85 98) no Hoare annotation was computed. [2018-11-18 13:41:37,185 INFO L421 ceAbstractionStarter]: At program point L77(line 77) the Hoare annotation is: (let ((.cse2 (= 0 ~pumpRunning~0)) (.cse0 (= ~systemActive~0 1)) (.cse1 (= test_~splverifierCounter~0 0))) (or (and (<= 1 ~pumpRunning~0) (<= 2 ~waterLevel~0) .cse0 .cse1) (not (= |old(~systemActive~0)| 1)) (not (= 0 |old(~pumpRunning~0)|)) (and (= ~systemActive~0 0) .cse2 .cse1) (and .cse2 (<= 1 ~waterLevel~0) .cse0 .cse1) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0)))) [2018-11-18 13:41:37,185 INFO L425 ceAbstractionStarter]: For program point L75(lines 75 81) no Hoare annotation was computed. [2018-11-18 13:41:37,185 INFO L425 ceAbstractionStarter]: For program point L75-1(lines 75 81) no Hoare annotation was computed. [2018-11-18 13:41:37,186 INFO L421 ceAbstractionStarter]: At program point L100(lines 55 102) the Hoare annotation is: (let ((.cse2 (= 0 ~pumpRunning~0)) (.cse0 (= ~systemActive~0 1)) (.cse1 (= test_~splverifierCounter~0 0))) (or (and (<= 1 ~pumpRunning~0) (<= 2 ~waterLevel~0) .cse0 .cse1) (not (= |old(~systemActive~0)| 1)) (not (= 0 |old(~pumpRunning~0)|)) (and (= ~systemActive~0 0) .cse2 .cse1) (and .cse2 (<= 1 ~waterLevel~0) .cse0 .cse1) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0)))) [2018-11-18 13:41:37,186 INFO L421 ceAbstractionStarter]: At program point L67(line 67) the Hoare annotation is: (let ((.cse2 (= 0 ~pumpRunning~0)) (.cse0 (= ~systemActive~0 1)) (.cse1 (= test_~splverifierCounter~0 0))) (or (and (<= 1 ~pumpRunning~0) (<= 2 ~waterLevel~0) .cse0 .cse1) (not (= |old(~systemActive~0)| 1)) (not (= 0 |old(~pumpRunning~0)|)) (and (= ~systemActive~0 0) .cse2 .cse1) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0)) (and .cse2 (<= 1 ~waterLevel~0) .cse0 .cse1))) [2018-11-18 13:41:37,186 INFO L425 ceAbstractionStarter]: For program point L65(lines 65 71) no Hoare annotation was computed. [2018-11-18 13:41:37,186 INFO L425 ceAbstractionStarter]: For program point L65-1(lines 65 71) no Hoare annotation was computed. [2018-11-18 13:41:37,186 INFO L425 ceAbstractionStarter]: For program point L57(lines 57 61) no Hoare annotation was computed. [2018-11-18 13:41:37,186 INFO L425 ceAbstractionStarter]: For program point L55-1(lines 55 102) no Hoare annotation was computed. [2018-11-18 13:41:37,186 INFO L421 ceAbstractionStarter]: At program point L103(lines 54 104) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-11-18 13:41:37,186 INFO L425 ceAbstractionStarter]: For program point testEXIT(lines 45 110) no Hoare annotation was computed. [2018-11-18 13:41:37,186 INFO L425 ceAbstractionStarter]: For program point isLowWaterSensorDryFINAL(lines 990 998) no Hoare annotation was computed. [2018-11-18 13:41:37,186 INFO L428 ceAbstractionStarter]: At program point isLowWaterSensorDryENTRY(lines 990 998) the Hoare annotation is: true [2018-11-18 13:41:37,186 INFO L425 ceAbstractionStarter]: For program point isLowWaterSensorDryEXIT(lines 990 998) no Hoare annotation was computed. [2018-11-18 13:41:37,186 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 13:41:37,186 INFO L421 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~waterLevel~0 |old(~waterLevel~0)|) (= |old(~pumpRunning~0)| ~pumpRunning~0)) [2018-11-18 13:41:37,186 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 13:41:37,187 INFO L425 ceAbstractionStarter]: For program point activatePumpFINAL(lines 234 241) no Hoare annotation was computed. [2018-11-18 13:41:37,187 INFO L425 ceAbstractionStarter]: For program point activatePumpEXIT(lines 234 241) no Hoare annotation was computed. [2018-11-18 13:41:37,187 INFO L421 ceAbstractionStarter]: At program point activatePumpENTRY(lines 234 241) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (= |old(~pumpRunning~0)| ~pumpRunning~0) (< ~waterLevel~0 2) (not (= ~systemActive~0 1))) [2018-11-18 13:41:37,187 INFO L428 ceAbstractionStarter]: At program point getWaterLevelENTRY(lines 967 975) the Hoare annotation is: true [2018-11-18 13:41:37,187 INFO L425 ceAbstractionStarter]: For program point getWaterLevelFINAL(lines 967 975) no Hoare annotation was computed. [2018-11-18 13:41:37,187 INFO L425 ceAbstractionStarter]: For program point getWaterLevelEXIT(lines 967 975) no Hoare annotation was computed. [2018-11-18 13:41:37,187 INFO L425 ceAbstractionStarter]: For program point isHighWaterLevelEXIT(lines 306 324) no Hoare annotation was computed. [2018-11-18 13:41:37,187 INFO L425 ceAbstractionStarter]: For program point L315(lines 315 319) no Hoare annotation was computed. [2018-11-18 13:41:37,187 INFO L428 ceAbstractionStarter]: At program point L313(line 313) the Hoare annotation is: true [2018-11-18 13:41:37,187 INFO L425 ceAbstractionStarter]: For program point L315-2(lines 315 319) no Hoare annotation was computed. [2018-11-18 13:41:37,187 INFO L425 ceAbstractionStarter]: For program point L313-1(line 313) no Hoare annotation was computed. [2018-11-18 13:41:37,187 INFO L428 ceAbstractionStarter]: At program point isHighWaterLevelENTRY(lines 306 324) the Hoare annotation is: true [2018-11-18 13:41:37,187 INFO L425 ceAbstractionStarter]: For program point isHighWaterLevelFINAL(lines 306 324) no Hoare annotation was computed. [2018-11-18 13:41:37,187 INFO L425 ceAbstractionStarter]: For program point L927-1(lines 923 934) no Hoare annotation was computed. [2018-11-18 13:41:37,188 INFO L421 ceAbstractionStarter]: At program point changeMethaneLevelENTRY(lines 923 934) the Hoare annotation is: (let ((.cse8 (not (= |old(~methaneLevelCritical~0)| 1))) (.cse6 (not (= 0 ~pumpRunning~0))) (.cse5 (not (= |old(~methaneLevelCritical~0)| 0)))) (let ((.cse0 (not (= ~systemActive~0 0))) (.cse1 (and (or .cse8 .cse6) (or .cse6 .cse5))) (.cse2 (= ~methaneLevelCritical~0 0)) (.cse3 (= ~methaneLevelCritical~0 1)) (.cse7 (not (= ~systemActive~0 1))) (.cse4 (not (= ~waterLevel~0 1)))) (and (or .cse0 .cse1 (or .cse2 .cse3) .cse4) (or .cse0 .cse1 .cse2 .cse4 .cse5) (or .cse6 .cse2 .cse7 .cse4 .cse5) (or .cse8 .cse6 .cse3 .cse7 .cse4)))) [2018-11-18 13:41:37,188 INFO L425 ceAbstractionStarter]: For program point changeMethaneLevelEXIT(lines 923 934) no Hoare annotation was computed. [2018-11-18 13:41:37,188 INFO L428 ceAbstractionStarter]: At program point isMethaneLevelCriticalENTRY(lines 935 943) the Hoare annotation is: true [2018-11-18 13:41:37,188 INFO L425 ceAbstractionStarter]: For program point isMethaneLevelCriticalFINAL(lines 935 943) no Hoare annotation was computed. [2018-11-18 13:41:37,188 INFO L425 ceAbstractionStarter]: For program point isMethaneLevelCriticalEXIT(lines 935 943) no Hoare annotation was computed. [2018-11-18 13:41:37,188 INFO L428 ceAbstractionStarter]: At program point L450-1(lines 450 454) the Hoare annotation is: true [2018-11-18 13:41:37,188 INFO L425 ceAbstractionStarter]: For program point cleanupEXIT(lines 436 465) no Hoare annotation was computed. [2018-11-18 13:41:37,188 INFO L425 ceAbstractionStarter]: For program point L446-1(lines 446 460) no Hoare annotation was computed. [2018-11-18 13:41:37,188 INFO L428 ceAbstractionStarter]: At program point L446-3(lines 446 460) the Hoare annotation is: true [2018-11-18 13:41:37,188 INFO L428 ceAbstractionStarter]: At program point L442(line 442) the Hoare annotation is: true [2018-11-18 13:41:37,188 INFO L425 ceAbstractionStarter]: For program point L442-1(line 442) no Hoare annotation was computed. [2018-11-18 13:41:37,188 INFO L428 ceAbstractionStarter]: At program point L461(lines 436 465) the Hoare annotation is: true [2018-11-18 13:41:37,188 INFO L425 ceAbstractionStarter]: For program point L457(line 457) no Hoare annotation was computed. [2018-11-18 13:41:37,188 INFO L425 ceAbstractionStarter]: For program point L447(line 447) no Hoare annotation was computed. [2018-11-18 13:41:37,188 INFO L428 ceAbstractionStarter]: At program point cleanupENTRY(lines 436 465) the Hoare annotation is: true [2018-11-18 13:41:37,188 INFO L425 ceAbstractionStarter]: For program point L450(lines 450 454) no Hoare annotation was computed. [2018-11-18 13:41:37,188 INFO L425 ceAbstractionStarter]: For program point L129(lines 128 147) no Hoare annotation was computed. [2018-11-18 13:41:37,188 INFO L421 ceAbstractionStarter]: At program point timeShiftENTRY(lines 125 148) the Hoare annotation is: (let ((.cse2 (not (= ~systemActive~0 1))) (.cse1 (not (= 0 |old(~pumpRunning~0)|))) (.cse0 (and (= ~waterLevel~0 |old(~waterLevel~0)|) (= |old(~pumpRunning~0)| ~pumpRunning~0)))) (and (or .cse0 .cse1 (< |old(~waterLevel~0)| 1) .cse2) (or (< |old(~pumpRunning~0)| 1) .cse0 (or (< |old(~waterLevel~0)| 2) .cse2)) (or .cse1 .cse0 (not (= ~systemActive~0 0))))) [2018-11-18 13:41:37,188 INFO L425 ceAbstractionStarter]: For program point timeShiftEXIT(lines 125 148) no Hoare annotation was computed. [2018-11-18 13:41:37,188 INFO L421 ceAbstractionStarter]: At program point L138(line 138) the Hoare annotation is: (let ((.cse0 (not (= 0 |old(~pumpRunning~0)|))) (.cse2 (not (= ~systemActive~0 1))) (.cse1 (= |old(~pumpRunning~0)| ~pumpRunning~0))) (and (or .cse0 (and (= ~waterLevel~0 |old(~waterLevel~0)|) .cse1) (< |old(~waterLevel~0)| 1) .cse2) (or .cse0 (not (= ~systemActive~0 0))) (or (< |old(~pumpRunning~0)| 1) (or (< |old(~waterLevel~0)| 2) .cse2) (and (<= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) .cse1)))) [2018-11-18 13:41:37,189 INFO L421 ceAbstractionStarter]: At program point L136(lines 136 142) the Hoare annotation is: (let ((.cse3 (= ~waterLevel~0 |old(~waterLevel~0)|))) (let ((.cse0 (not (= 0 |old(~pumpRunning~0)|))) (.cse1 (and .cse3 (= |old(~pumpRunning~0)| ~pumpRunning~0))) (.cse2 (not (= ~systemActive~0 1)))) (and (or .cse0 (not (= ~systemActive~0 0)) .cse1) (or .cse0 (< |old(~waterLevel~0)| 1) .cse2 (and (<= 1 ~pumpRunning~0) (<= 2 ~waterLevel~0) .cse3) .cse1) (or (< |old(~pumpRunning~0)| 1) (or (< |old(~waterLevel~0)| 2) .cse2) (and (= 0 ~pumpRunning~0) (<= |old(~waterLevel~0)| (+ ~waterLevel~0 1))))))) [2018-11-18 13:41:37,189 INFO L425 ceAbstractionStarter]: For program point timeShiftFINAL(lines 125 148) no Hoare annotation was computed. [2018-11-18 13:41:37,189 INFO L421 ceAbstractionStarter]: At program point L131(line 131) the Hoare annotation is: (let ((.cse0 (not (= 0 |old(~pumpRunning~0)|))) (.cse1 (not (= ~systemActive~0 1)))) (and (or .cse0 (not (= ~systemActive~0 0))) (or (< |old(~pumpRunning~0)| 1) (and (= ~waterLevel~0 |old(~waterLevel~0)|) (= |old(~pumpRunning~0)| ~pumpRunning~0)) (or (< |old(~waterLevel~0)| 2) .cse1)) (or .cse0 (< |old(~waterLevel~0)| 1) .cse1))) [2018-11-18 13:41:37,189 INFO L421 ceAbstractionStarter]: At program point lowerWaterLevelENTRY(lines 899 910) the Hoare annotation is: (or (< ~pumpRunning~0 1) (= ~waterLevel~0 |old(~waterLevel~0)|) (or (< |old(~waterLevel~0)| 2) (not (= ~systemActive~0 1)))) [2018-11-18 13:41:37,189 INFO L425 ceAbstractionStarter]: For program point lowerWaterLevelEXIT(lines 899 910) no Hoare annotation was computed. [2018-11-18 13:41:37,189 INFO L425 ceAbstractionStarter]: For program point L903-1(lines 899 910) no Hoare annotation was computed. [2018-11-18 13:41:37,189 INFO L425 ceAbstractionStarter]: For program point setupEXIT(lines 490 496) no Hoare annotation was computed. [2018-11-18 13:41:37,189 INFO L428 ceAbstractionStarter]: At program point setupFINAL(lines 490 496) the Hoare annotation is: true [2018-11-18 13:41:37,189 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 13:41:37,189 INFO L421 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (= ~waterLevel~0 1) (= ~methaneLevelCritical~0 0) (= ~pumpRunning~0 0) (= ~systemActive~0 1)) [2018-11-18 13:41:37,189 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 13:41:37,189 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 13:41:37,189 INFO L425 ceAbstractionStarter]: For program point L161(lines 161 178) no Hoare annotation was computed. [2018-11-18 13:41:37,189 INFO L421 ceAbstractionStarter]: At program point processEnvironment__wrappee__highWaterSensorENTRY(lines 157 181) the Hoare annotation is: (or (= |old(~pumpRunning~0)| ~pumpRunning~0) (not (= 0 |old(~pumpRunning~0)|)) (< ~waterLevel~0 1) (not (= ~systemActive~0 1))) [2018-11-18 13:41:37,190 INFO L425 ceAbstractionStarter]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 157 181) no Hoare annotation was computed. [2018-11-18 13:41:37,190 INFO L421 ceAbstractionStarter]: At program point L176(line 176) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (< ~waterLevel~0 1) (not (= ~systemActive~0 1))) [2018-11-18 13:41:37,190 INFO L425 ceAbstractionStarter]: For program point L176-1(lines 157 181) no Hoare annotation was computed. [2018-11-18 13:41:37,190 INFO L421 ceAbstractionStarter]: At program point L171(line 171) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= 0 processEnvironment__wrappee__highWaterSensor_~tmp~1) (= |old(~pumpRunning~0)| ~pumpRunning~0)) (< ~waterLevel~0 1) (not (= ~systemActive~0 1))) [2018-11-18 13:41:37,190 INFO L421 ceAbstractionStarter]: At program point L167(line 167) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (< ~waterLevel~0 1) (not (= ~systemActive~0 1)) (and (<= 2 ~waterLevel~0) (= |old(~pumpRunning~0)| ~pumpRunning~0))) [2018-11-18 13:41:37,190 INFO L425 ceAbstractionStarter]: For program point L165(lines 165 173) no Hoare annotation was computed. [2018-11-18 13:41:37,190 INFO L421 ceAbstractionStarter]: At program point L163(line 163) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (= |old(~pumpRunning~0)| ~pumpRunning~0) (< ~waterLevel~0 1) (not (= ~systemActive~0 1))) [2018-11-18 13:41:37,190 INFO L425 ceAbstractionStarter]: For program point L163-1(line 163) no Hoare annotation was computed. [2018-11-18 13:41:37,190 INFO L425 ceAbstractionStarter]: For program point waterRiseEXIT(lines 911 922) no Hoare annotation was computed. [2018-11-18 13:41:37,190 INFO L421 ceAbstractionStarter]: At program point waterRiseENTRY(lines 911 922) the Hoare annotation is: (let ((.cse0 (not (= ~systemActive~0 1))) (.cse2 (not (= 0 ~pumpRunning~0))) (.cse1 (= ~waterLevel~0 |old(~waterLevel~0)|))) (and (or (< ~pumpRunning~0 1) .cse0 (< |old(~waterLevel~0)| 2) .cse1) (or .cse1 .cse2 (< |old(~waterLevel~0)| 1) .cse0) (or .cse2 .cse1 (not (= ~systemActive~0 0))))) [2018-11-18 13:41:37,190 INFO L425 ceAbstractionStarter]: For program point L915-1(lines 911 922) no Hoare annotation was computed. [2018-11-18 13:41:37,190 INFO L425 ceAbstractionStarter]: For program point __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION(line 430) no Hoare annotation was computed. [2018-11-18 13:41:37,190 INFO L425 ceAbstractionStarter]: For program point __automaton_failFINAL(lines 426 433) no Hoare annotation was computed. [2018-11-18 13:41:37,190 INFO L428 ceAbstractionStarter]: At program point __automaton_failENTRY(lines 426 433) the Hoare annotation is: true [2018-11-18 13:41:37,190 INFO L425 ceAbstractionStarter]: For program point __automaton_failEXIT(lines 426 433) no Hoare annotation was computed. [2018-11-18 13:41:37,190 INFO L421 ceAbstractionStarter]: At program point L193(line 193) the Hoare annotation is: (let ((.cse0 (< ~waterLevel~0 1)) (.cse1 (not (= ~systemActive~0 1)))) (and (or (not (= 0 |old(~pumpRunning~0)|)) .cse0 .cse1) (or (< |old(~pumpRunning~0)| 1) (and (<= 1 processEnvironment__wrappee__lowWaterSensor_~tmp~2) (= |old(~pumpRunning~0)| ~pumpRunning~0)) .cse0 .cse1))) [2018-11-18 13:41:37,190 INFO L425 ceAbstractionStarter]: For program point L191(lines 191 199) no Hoare annotation was computed. [2018-11-18 13:41:37,190 INFO L425 ceAbstractionStarter]: For program point processEnvironment__wrappee__lowWaterSensorEXIT(lines 183 207) no Hoare annotation was computed. [2018-11-18 13:41:37,190 INFO L421 ceAbstractionStarter]: At program point L189(line 189) the Hoare annotation is: (let ((.cse0 (< ~waterLevel~0 1)) (.cse1 (not (= ~systemActive~0 1)))) (and (or (not (= 0 |old(~pumpRunning~0)|)) .cse0 .cse1) (or (< |old(~pumpRunning~0)| 1) (= |old(~pumpRunning~0)| ~pumpRunning~0) .cse0 .cse1))) [2018-11-18 13:41:37,191 INFO L425 ceAbstractionStarter]: For program point L189-1(line 189) no Hoare annotation was computed. [2018-11-18 13:41:37,191 INFO L425 ceAbstractionStarter]: For program point L187(lines 187 204) no Hoare annotation was computed. [2018-11-18 13:41:37,191 INFO L421 ceAbstractionStarter]: At program point processEnvironment__wrappee__lowWaterSensorENTRY(lines 183 207) the Hoare annotation is: (let ((.cse0 (= |old(~pumpRunning~0)| ~pumpRunning~0)) (.cse1 (< ~waterLevel~0 1)) (.cse2 (not (= ~systemActive~0 1)))) (and (or .cse0 (not (= 0 |old(~pumpRunning~0)|)) .cse1 .cse2) (or (< |old(~pumpRunning~0)| 1) .cse0 .cse1 .cse2))) [2018-11-18 13:41:37,191 INFO L421 ceAbstractionStarter]: At program point L202(line 202) the Hoare annotation is: (let ((.cse0 (< ~waterLevel~0 1)) (.cse1 (not (= ~systemActive~0 1)))) (and (or (not (= 0 |old(~pumpRunning~0)|)) (= |old(~pumpRunning~0)| ~pumpRunning~0) .cse0 .cse1) (or (< |old(~pumpRunning~0)| 1) .cse0 .cse1))) [2018-11-18 13:41:37,191 INFO L425 ceAbstractionStarter]: For program point L202-1(lines 183 207) no Hoare annotation was computed. [2018-11-18 13:41:37,191 INFO L421 ceAbstractionStarter]: At program point L197(line 197) the Hoare annotation is: (let ((.cse0 (< ~waterLevel~0 1)) (.cse1 (not (= ~systemActive~0 1)))) (and (or (not (= 0 |old(~pumpRunning~0)|)) .cse0 .cse1) (or (< |old(~pumpRunning~0)| 1) .cse0 .cse1))) [2018-11-18 13:41:37,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 01:41:37 BoogieIcfgContainer [2018-11-18 13:41:37,199 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 13:41:37,199 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 13:41:37,199 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 13:41:37,199 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 13:41:37,200 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:41:14" (3/4) ... [2018-11-18 13:41:37,202 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 13:41:37,214 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure select_helpers [2018-11-18 13:41:37,214 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure valid_product [2018-11-18 13:41:37,214 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __utac_acc__Specification4_spec__1 [2018-11-18 13:41:37,214 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 13:41:37,214 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure stopSystem [2018-11-18 13:41:37,214 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure isPumpRunning [2018-11-18 13:41:37,214 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure isLowWaterLevel [2018-11-18 13:41:37,214 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure select_features [2018-11-18 13:41:37,215 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure runTest [2018-11-18 13:41:37,215 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2018-11-18 13:41:37,215 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2018-11-18 13:41:37,215 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure isHighWaterSensorDry [2018-11-18 13:41:37,215 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment [2018-11-18 13:41:37,215 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2018-11-18 13:41:37,215 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure test [2018-11-18 13:41:37,215 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure isLowWaterSensorDry [2018-11-18 13:41:37,215 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 13:41:37,215 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure activatePump [2018-11-18 13:41:37,215 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure getWaterLevel [2018-11-18 13:41:37,215 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure isHighWaterLevel [2018-11-18 13:41:37,215 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2018-11-18 13:41:37,216 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2018-11-18 13:41:37,216 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2018-11-18 13:41:37,216 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2018-11-18 13:41:37,216 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure lowerWaterLevel [2018-11-18 13:41:37,216 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure setup [2018-11-18 13:41:37,216 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2018-11-18 13:41:37,216 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2018-11-18 13:41:37,217 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __automaton_fail [2018-11-18 13:41:37,217 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__lowWaterSensor [2018-11-18 13:41:37,223 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 39 nodes and edges [2018-11-18 13:41:37,223 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2018-11-18 13:41:37,223 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-18 13:41:37,245 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((1 <= pumpRunning && 2 <= waterLevel) && systemActive == 1) && splverifierCounter == 0) || !(\old(systemActive) == 1)) || !(0 == \old(pumpRunning))) || ((systemActive == 0 && 0 == pumpRunning) && splverifierCounter == 0)) || (((0 == pumpRunning && 1 <= waterLevel) && systemActive == 1) && splverifierCounter == 0)) || !(\old(waterLevel) == 1)) || !(\old(methaneLevelCritical) == 0) [2018-11-18 13:41:37,245 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(0 == \old(pumpRunning)) || !(\old(systemActive) == 1)) || !(\old(waterLevel) == 1)) || !(\old(methaneLevelCritical) == 0) [2018-11-18 13:41:37,280 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_9f05bff1-d2f6-41ec-8050-822ada90cb76/bin-2019/utaipan/witness.graphml [2018-11-18 13:41:37,280 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 13:41:37,281 INFO L168 Benchmark]: Toolchain (without parser) took 23376.03 ms. Allocated memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: 1.1 GB). Free memory was 955.5 MB in the beginning and 1.1 GB in the end (delta: -140.0 MB). Peak memory consumption was 993.0 MB. Max. memory is 11.5 GB. [2018-11-18 13:41:37,282 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:41:37,282 INFO L168 Benchmark]: CACSL2BoogieTranslator took 366.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 955.5 MB in the beginning and 1.1 GB in the end (delta: -174.4 MB). Peak memory consumption was 35.6 MB. Max. memory is 11.5 GB. [2018-11-18 13:41:37,282 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.12 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:41:37,282 INFO L168 Benchmark]: Boogie Preprocessor took 25.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 13:41:37,282 INFO L168 Benchmark]: RCFGBuilder took 531.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 60.0 MB). Peak memory consumption was 60.0 MB. Max. memory is 11.5 GB. [2018-11-18 13:41:37,283 INFO L168 Benchmark]: TraceAbstraction took 22341.09 ms. Allocated memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: 994.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -28.4 MB). Peak memory consumption was 1.3 GB. Max. memory is 11.5 GB. [2018-11-18 13:41:37,283 INFO L168 Benchmark]: Witness Printer took 81.14 ms. Allocated memory is still 2.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:41:37,285 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 366.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 955.5 MB in the beginning and 1.1 GB in the end (delta: -174.4 MB). Peak memory consumption was 35.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.12 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 531.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 60.0 MB). Peak memory consumption was 60.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 22341.09 ms. Allocated memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: 994.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -28.4 MB). Peak memory consumption was 1.3 GB. Max. memory is 11.5 GB. * Witness Printer took 81.14 ms. Allocated memory is still 2.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 430]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 446]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: ((!(0 == \old(pumpRunning)) || !(\old(systemActive) == 1)) || !(\old(waterLevel) == 1)) || !(\old(methaneLevelCritical) == 0) - InvariantResult [Line: 436]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: ((((((((1 <= pumpRunning && 2 <= waterLevel) && systemActive == 1) && splverifierCounter == 0) || !(\old(systemActive) == 1)) || !(0 == \old(pumpRunning))) || ((systemActive == 0 && 0 == pumpRunning) && splverifierCounter == 0)) || (((0 == pumpRunning && 1 <= waterLevel) && systemActive == 1) && splverifierCounter == 0)) || !(\old(waterLevel) == 1)) || !(\old(methaneLevelCritical) == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 31 procedures, 167 locations, 1 error locations. SAFE Result, 22.2s OverallTime, 13 OverallIterations, 4 TraceHistogramMax, 9.9s AutomataDifference, 0.0s DeadEndRemovalTime, 3.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2626 SDtfs, 3575 SDslu, 7131 SDs, 0 SdLazy, 7541 SolverSat, 2015 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.4s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 2295 GetRequests, 2086 SyntacticMatches, 25 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1247 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2085occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.4s AbstIntTime, 7 AbstIntIterations, 2 AbstIntStrong, 0.9983775097904302 AbsIntWeakeningRatio, 0.8461538461538461 AbsIntAvgWeakeningVarsNumRemoved, 38.14423076923077 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 13 MinimizatonAttempts, 1018 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 69 LocationsWithAnnotation, 4768 PreInvPairs, 4854 NumberOfFragments, 1591 HoareAnnotationTreeSize, 4768 FomulaSimplifications, 28723 FormulaSimplificationTreeSizeReduction, 0.9s HoareSimplificationTime, 69 FomulaSimplificationsInter, 17753 FormulaSimplificationTreeSizeReductionInter, 2.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 2521 NumberOfCodeBlocks, 2521 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 3386 ConstructedInterpolants, 0 QuantifiedInterpolants, 797865 SizeOfPredicates, 20 NumberOfNonLiveVariables, 4177 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 23 InterpolantComputations, 8 PerfectInterpolantSequences, 1385/1500 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...