./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product42_false-unreach-call_false-termination.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_bd2f13d4-6b22-4ac8-897a-532aa52a01e4/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_bd2f13d4-6b22-4ac8-897a-532aa52a01e4/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_bd2f13d4-6b22-4ac8-897a-532aa52a01e4/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_bd2f13d4-6b22-4ac8-897a-532aa52a01e4/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product42_false-unreach-call_false-termination.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_bd2f13d4-6b22-4ac8-897a-532aa52a01e4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_bd2f13d4-6b22-4ac8-897a-532aa52a01e4/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 0f3978068d3e88eb2e8d08ee6f85f2ba09bbc729 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-03 03:20:32,941 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 03:20:32,942 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 03:20:32,950 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 03:20:32,950 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 03:20:32,951 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 03:20:32,952 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 03:20:32,953 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 03:20:32,954 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 03:20:32,955 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 03:20:32,955 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 03:20:32,955 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 03:20:32,956 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 03:20:32,957 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 03:20:32,957 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 03:20:32,958 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 03:20:32,959 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 03:20:32,960 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 03:20:32,961 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 03:20:32,962 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 03:20:32,963 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 03:20:32,964 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 03:20:32,965 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 03:20:32,966 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 03:20:32,966 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 03:20:32,966 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 03:20:32,967 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 03:20:32,967 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 03:20:32,968 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 03:20:32,969 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 03:20:32,969 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 03:20:32,969 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 03:20:32,970 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 03:20:32,970 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 03:20:32,970 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 03:20:32,971 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 03:20:32,971 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_bd2f13d4-6b22-4ac8-897a-532aa52a01e4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-03 03:20:32,980 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 03:20:32,981 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 03:20:32,981 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 03:20:32,982 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 03:20:32,982 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 03:20:32,982 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 03:20:32,982 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 03:20:32,982 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 03:20:32,982 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 03:20:32,982 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-03 03:20:32,982 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 03:20:32,983 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-03 03:20:32,983 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 03:20:32,983 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 03:20:32,983 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 03:20:32,983 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 03:20:32,984 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 03:20:32,984 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 03:20:32,984 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 03:20:32,984 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 03:20:32,984 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 03:20:32,984 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 03:20:32,984 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 03:20:32,985 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 03:20:32,985 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 03:20:32,985 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 03:20:32,985 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-03 03:20:32,985 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 03:20:32,985 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 03:20:32,985 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 03:20:32,986 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 03:20:32,986 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 03:20:32,986 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 03:20:32,986 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 03:20:32,986 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 03:20:32,986 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 03:20:32,986 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_bd2f13d4-6b22-4ac8-897a-532aa52a01e4/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 -> 0f3978068d3e88eb2e8d08ee6f85f2ba09bbc729 [2018-12-03 03:20:33,006 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 03:20:33,015 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 03:20:33,017 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 03:20:33,018 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-03 03:20:33,019 INFO L276 PluginConnector]: CDTParser initialized [2018-12-03 03:20:33,019 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_bd2f13d4-6b22-4ac8-897a-532aa52a01e4/bin-2019/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec1_product42_false-unreach-call_false-termination.cil.c [2018-12-03 03:20:33,057 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bd2f13d4-6b22-4ac8-897a-532aa52a01e4/bin-2019/utaipan/data/b4bcd6838/f21e52ba16694c1e97099c38bd8e4b60/FLAG6f8ff23eb [2018-12-03 03:20:33,378 INFO L307 CDTParser]: Found 1 translation units. [2018-12-03 03:20:33,379 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_bd2f13d4-6b22-4ac8-897a-532aa52a01e4/sv-benchmarks/c/product-lines/minepump_spec1_product42_false-unreach-call_false-termination.cil.c [2018-12-03 03:20:33,385 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bd2f13d4-6b22-4ac8-897a-532aa52a01e4/bin-2019/utaipan/data/b4bcd6838/f21e52ba16694c1e97099c38bd8e4b60/FLAG6f8ff23eb [2018-12-03 03:20:33,784 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_bd2f13d4-6b22-4ac8-897a-532aa52a01e4/bin-2019/utaipan/data/b4bcd6838/f21e52ba16694c1e97099c38bd8e4b60 [2018-12-03 03:20:33,787 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 03:20:33,788 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-03 03:20:33,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-03 03:20:33,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-03 03:20:33,792 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-03 03:20:33,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 03:20:33" (1/1) ... [2018-12-03 03:20:33,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38efbda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:20:33, skipping insertion in model container [2018-12-03 03:20:33,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 03:20:33" (1/1) ... [2018-12-03 03:20:33,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-03 03:20:33,820 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-03 03:20:33,962 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 03:20:33,970 INFO L191 MainTranslator]: Completed pre-run [2018-12-03 03:20:34,055 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 03:20:34,069 INFO L195 MainTranslator]: Completed translation [2018-12-03 03:20:34,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:20:34 WrapperNode [2018-12-03 03:20:34,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-03 03:20:34,070 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 03:20:34,070 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 03:20:34,070 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 03:20:34,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:20:34" (1/1) ... [2018-12-03 03:20:34,086 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:20:34" (1/1) ... [2018-12-03 03:20:34,091 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 03:20:34,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 03:20:34,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 03:20:34,092 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 03:20:34,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:20:34" (1/1) ... [2018-12-03 03:20:34,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:20:34" (1/1) ... [2018-12-03 03:20:34,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:20:34" (1/1) ... [2018-12-03 03:20:34,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:20:34" (1/1) ... [2018-12-03 03:20:34,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:20:34" (1/1) ... [2018-12-03 03:20:34,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:20:34" (1/1) ... [2018-12-03 03:20:34,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:20:34" (1/1) ... [2018-12-03 03:20:34,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 03:20:34,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 03:20:34,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 03:20:34,113 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 03:20:34,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:20:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bd2f13d4-6b22-4ac8-897a-532aa52a01e4/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 03:20:34,145 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2018-12-03 03:20:34,146 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2018-12-03 03:20:34,146 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 03:20:34,146 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 03:20:34,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-03 03:20:34,146 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2018-12-03 03:20:34,146 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2018-12-03 03:20:34,146 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2018-12-03 03:20:34,146 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2018-12-03 03:20:34,146 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2018-12-03 03:20:34,146 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2018-12-03 03:20:34,146 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2018-12-03 03:20:34,146 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2018-12-03 03:20:34,147 INFO L130 BoogieDeclarations]: Found specification of procedure test [2018-12-03 03:20:34,147 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2018-12-03 03:20:34,147 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2018-12-03 03:20:34,147 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2018-12-03 03:20:34,147 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2018-12-03 03:20:34,147 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2018-12-03 03:20:34,147 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2018-12-03 03:20:34,147 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2018-12-03 03:20:34,147 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2018-12-03 03:20:34,147 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2018-12-03 03:20:34,147 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2018-12-03 03:20:34,147 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2018-12-03 03:20:34,147 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2018-12-03 03:20:34,147 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2018-12-03 03:20:34,147 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2018-12-03 03:20:34,148 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2018-12-03 03:20:34,148 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2018-12-03 03:20:34,148 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2018-12-03 03:20:34,148 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2018-12-03 03:20:34,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2018-12-03 03:20:34,148 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2018-12-03 03:20:34,148 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2018-12-03 03:20:34,148 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2018-12-03 03:20:34,148 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2018-12-03 03:20:34,148 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2018-12-03 03:20:34,148 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2018-12-03 03:20:34,148 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2018-12-03 03:20:34,148 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2018-12-03 03:20:34,148 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2018-12-03 03:20:34,148 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2018-12-03 03:20:34,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2018-12-03 03:20:34,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-03 03:20:34,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-03 03:20:34,149 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2018-12-03 03:20:34,149 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2018-12-03 03:20:34,149 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2018-12-03 03:20:34,149 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2018-12-03 03:20:34,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 03:20:34,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 03:20:34,149 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2018-12-03 03:20:34,149 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2018-12-03 03:20:34,422 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 03:20:34,422 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-03 03:20:34,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:20:34 BoogieIcfgContainer [2018-12-03 03:20:34,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 03:20:34,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 03:20:34,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 03:20:34,425 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 03:20:34,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 03:20:33" (1/3) ... [2018-12-03 03:20:34,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50f1ce5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 03:20:34, skipping insertion in model container [2018-12-03 03:20:34,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:20:34" (2/3) ... [2018-12-03 03:20:34,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50f1ce5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 03:20:34, skipping insertion in model container [2018-12-03 03:20:34,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:20:34" (3/3) ... [2018-12-03 03:20:34,427 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product42_false-unreach-call_false-termination.cil.c [2018-12-03 03:20:34,432 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 03:20:34,437 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 03:20:34,446 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 03:20:34,464 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 03:20:34,464 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 03:20:34,464 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 03:20:34,464 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 03:20:34,464 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 03:20:34,464 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 03:20:34,464 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 03:20:34,464 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 03:20:34,475 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states. [2018-12-03 03:20:34,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-12-03 03:20:34,480 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 03:20:34,480 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 03:20:34,482 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 03:20:34,485 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 03:20:34,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1563751973, now seen corresponding path program 1 times [2018-12-03 03:20:34,487 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 03:20:34,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 03:20:34,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 03:20:34,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 03:20:34,515 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 03:20:34,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 03:20:34,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 03:20:34,621 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 03:20:34,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 03:20:34,621 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 03:20:34,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-03 03:20:34,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-03 03:20:34,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-03 03:20:34,634 INFO L87 Difference]: Start difference. First operand 134 states. Second operand 2 states. [2018-12-03 03:20:34,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 03:20:34,654 INFO L93 Difference]: Finished difference Result 242 states and 299 transitions. [2018-12-03 03:20:34,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-03 03:20:34,655 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2018-12-03 03:20:34,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 03:20:34,662 INFO L225 Difference]: With dead ends: 242 [2018-12-03 03:20:34,662 INFO L226 Difference]: Without dead ends: 121 [2018-12-03 03:20:34,664 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-03 03:20:34,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-12-03 03:20:34,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-12-03 03:20:34,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-12-03 03:20:34,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 141 transitions. [2018-12-03 03:20:34,695 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 141 transitions. Word has length 46 [2018-12-03 03:20:34,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 03:20:34,695 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 141 transitions. [2018-12-03 03:20:34,695 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-03 03:20:34,695 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 141 transitions. [2018-12-03 03:20:34,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-12-03 03:20:34,697 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 03:20:34,697 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 03:20:34,697 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 03:20:34,697 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 03:20:34,697 INFO L82 PathProgramCache]: Analyzing trace with hash 785919818, now seen corresponding path program 1 times [2018-12-03 03:20:34,697 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 03:20:34,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 03:20:34,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 03:20:34,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 03:20:34,698 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 03:20:34,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 03:20:34,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 03:20:34,754 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 03:20:34,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-03 03:20:34,754 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 03:20:34,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 03:20:34,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 03:20:34,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 03:20:34,756 INFO L87 Difference]: Start difference. First operand 121 states and 141 transitions. Second operand 3 states. [2018-12-03 03:20:34,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 03:20:34,767 INFO L93 Difference]: Finished difference Result 187 states and 217 transitions. [2018-12-03 03:20:34,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 03:20:34,768 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2018-12-03 03:20:34,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 03:20:34,769 INFO L225 Difference]: With dead ends: 187 [2018-12-03 03:20:34,769 INFO L226 Difference]: Without dead ends: 112 [2018-12-03 03:20:34,769 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 03:20:34,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-12-03 03:20:34,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-12-03 03:20:34,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-12-03 03:20:34,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 129 transitions. [2018-12-03 03:20:34,776 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 129 transitions. Word has length 47 [2018-12-03 03:20:34,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 03:20:34,777 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 129 transitions. [2018-12-03 03:20:34,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 03:20:34,777 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 129 transitions. [2018-12-03 03:20:34,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-12-03 03:20:34,777 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 03:20:34,778 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 03:20:34,778 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 03:20:34,778 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 03:20:34,778 INFO L82 PathProgramCache]: Analyzing trace with hash -757338889, now seen corresponding path program 1 times [2018-12-03 03:20:34,778 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 03:20:34,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 03:20:34,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 03:20:34,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 03:20:34,779 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 03:20:34,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 03:20:34,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 03:20:34,861 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 03:20:34,861 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-03 03:20:34,861 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 03:20:34,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-03 03:20:34,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-03 03:20:34,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-12-03 03:20:34,862 INFO L87 Difference]: Start difference. First operand 112 states and 129 transitions. Second operand 7 states. [2018-12-03 03:20:35,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 03:20:35,013 INFO L93 Difference]: Finished difference Result 200 states and 235 transitions. [2018-12-03 03:20:35,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-03 03:20:35,014 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2018-12-03 03:20:35,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 03:20:35,014 INFO L225 Difference]: With dead ends: 200 [2018-12-03 03:20:35,015 INFO L226 Difference]: Without dead ends: 112 [2018-12-03 03:20:35,015 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-12-03 03:20:35,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-12-03 03:20:35,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-12-03 03:20:35,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-12-03 03:20:35,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 128 transitions. [2018-12-03 03:20:35,021 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 128 transitions. Word has length 52 [2018-12-03 03:20:35,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 03:20:35,021 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 128 transitions. [2018-12-03 03:20:35,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-03 03:20:35,022 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 128 transitions. [2018-12-03 03:20:35,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-12-03 03:20:35,023 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 03:20:35,023 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 03:20:35,023 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 03:20:35,023 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 03:20:35,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1328849458, now seen corresponding path program 1 times [2018-12-03 03:20:35,023 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 03:20:35,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 03:20:35,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 03:20:35,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 03:20:35,024 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 03:20:35,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 03:20:35,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 03:20:35,070 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 03:20:35,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-03 03:20:35,070 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 03:20:35,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-03 03:20:35,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-03 03:20:35,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 03:20:35,071 INFO L87 Difference]: Start difference. First operand 112 states and 128 transitions. Second operand 5 states. [2018-12-03 03:20:35,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 03:20:35,331 INFO L93 Difference]: Finished difference Result 290 states and 347 transitions. [2018-12-03 03:20:35,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-03 03:20:35,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2018-12-03 03:20:35,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 03:20:35,334 INFO L225 Difference]: With dead ends: 290 [2018-12-03 03:20:35,334 INFO L226 Difference]: Without dead ends: 202 [2018-12-03 03:20:35,335 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-12-03 03:20:35,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-12-03 03:20:35,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 183. [2018-12-03 03:20:35,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-12-03 03:20:35,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 209 transitions. [2018-12-03 03:20:35,355 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 209 transitions. Word has length 60 [2018-12-03 03:20:35,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 03:20:35,355 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 209 transitions. [2018-12-03 03:20:35,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-03 03:20:35,355 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 209 transitions. [2018-12-03 03:20:35,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-12-03 03:20:35,357 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 03:20:35,357 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 03:20:35,357 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 03:20:35,358 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 03:20:35,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1343404140, now seen corresponding path program 1 times [2018-12-03 03:20:35,358 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 03:20:35,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 03:20:35,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 03:20:35,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 03:20:35,359 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 03:20:35,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 03:20:35,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 03:20:35,427 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 03:20:35,427 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-03 03:20:35,427 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 03:20:35,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-03 03:20:35,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-03 03:20:35,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-03 03:20:35,428 INFO L87 Difference]: Start difference. First operand 183 states and 209 transitions. Second operand 6 states. [2018-12-03 03:20:35,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 03:20:35,530 INFO L93 Difference]: Finished difference Result 486 states and 574 transitions. [2018-12-03 03:20:35,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-03 03:20:35,530 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 74 [2018-12-03 03:20:35,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 03:20:35,533 INFO L225 Difference]: With dead ends: 486 [2018-12-03 03:20:35,533 INFO L226 Difference]: Without dead ends: 327 [2018-12-03 03:20:35,534 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-12-03 03:20:35,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-12-03 03:20:35,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 321. [2018-12-03 03:20:35,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2018-12-03 03:20:35,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 368 transitions. [2018-12-03 03:20:35,553 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 368 transitions. Word has length 74 [2018-12-03 03:20:35,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 03:20:35,553 INFO L480 AbstractCegarLoop]: Abstraction has 321 states and 368 transitions. [2018-12-03 03:20:35,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-03 03:20:35,553 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 368 transitions. [2018-12-03 03:20:35,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-12-03 03:20:35,555 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 03:20:35,555 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 03:20:35,555 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 03:20:35,555 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 03:20:35,555 INFO L82 PathProgramCache]: Analyzing trace with hash -385772688, now seen corresponding path program 1 times [2018-12-03 03:20:35,555 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 03:20:35,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 03:20:35,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 03:20:35,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 03:20:35,556 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 03:20:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 03:20:35,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 03:20:35,633 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 03:20:35,633 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-03 03:20:35,633 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 03:20:35,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-03 03:20:35,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-03 03:20:35,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-03 03:20:35,634 INFO L87 Difference]: Start difference. First operand 321 states and 368 transitions. Second operand 7 states. [2018-12-03 03:20:35,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 03:20:35,935 INFO L93 Difference]: Finished difference Result 356 states and 421 transitions. [2018-12-03 03:20:35,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-03 03:20:35,936 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2018-12-03 03:20:35,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 03:20:35,937 INFO L225 Difference]: With dead ends: 356 [2018-12-03 03:20:35,937 INFO L226 Difference]: Without dead ends: 353 [2018-12-03 03:20:35,938 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2018-12-03 03:20:35,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2018-12-03 03:20:35,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 321. [2018-12-03 03:20:35,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2018-12-03 03:20:35,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 367 transitions. [2018-12-03 03:20:35,952 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 367 transitions. Word has length 78 [2018-12-03 03:20:35,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 03:20:35,952 INFO L480 AbstractCegarLoop]: Abstraction has 321 states and 367 transitions. [2018-12-03 03:20:35,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-03 03:20:35,952 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 367 transitions. [2018-12-03 03:20:35,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-12-03 03:20:35,953 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 03:20:35,954 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 03:20:35,954 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 03:20:35,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 03:20:35,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1576837971, now seen corresponding path program 1 times [2018-12-03 03:20:35,954 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 03:20:35,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 03:20:35,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 03:20:35,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 03:20:35,955 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 03:20:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 03:20:35,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-03 03:20:35,993 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 03:20:35,994 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-03 03:20:35,994 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 03:20:35,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-03 03:20:35,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-03 03:20:35,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-03 03:20:35,994 INFO L87 Difference]: Start difference. First operand 321 states and 367 transitions. Second operand 6 states. [2018-12-03 03:20:36,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 03:20:36,015 INFO L93 Difference]: Finished difference Result 632 states and 738 transitions. [2018-12-03 03:20:36,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-03 03:20:36,016 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 94 [2018-12-03 03:20:36,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 03:20:36,017 INFO L225 Difference]: With dead ends: 632 [2018-12-03 03:20:36,017 INFO L226 Difference]: Without dead ends: 335 [2018-12-03 03:20:36,018 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-12-03 03:20:36,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-12-03 03:20:36,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 331. [2018-12-03 03:20:36,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-12-03 03:20:36,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 377 transitions. [2018-12-03 03:20:36,029 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 377 transitions. Word has length 94 [2018-12-03 03:20:36,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 03:20:36,030 INFO L480 AbstractCegarLoop]: Abstraction has 331 states and 377 transitions. [2018-12-03 03:20:36,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-03 03:20:36,030 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 377 transitions. [2018-12-03 03:20:36,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-12-03 03:20:36,031 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 03:20:36,031 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 03:20:36,031 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 03:20:36,031 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 03:20:36,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1820736047, now seen corresponding path program 1 times [2018-12-03 03:20:36,031 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 03:20:36,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 03:20:36,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 03:20:36,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 03:20:36,032 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 03:20:36,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 03:20:36,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-03 03:20:36,075 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 03:20:36,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-03 03:20:36,075 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 03:20:36,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-03 03:20:36,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-03 03:20:36,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-03 03:20:36,075 INFO L87 Difference]: Start difference. First operand 331 states and 377 transitions. Second operand 8 states. [2018-12-03 03:20:36,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 03:20:36,105 INFO L93 Difference]: Finished difference Result 652 states and 760 transitions. [2018-12-03 03:20:36,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-03 03:20:36,105 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2018-12-03 03:20:36,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 03:20:36,106 INFO L225 Difference]: With dead ends: 652 [2018-12-03 03:20:36,106 INFO L226 Difference]: Without dead ends: 345 [2018-12-03 03:20:36,107 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-03 03:20:36,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2018-12-03 03:20:36,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 339. [2018-12-03 03:20:36,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-12-03 03:20:36,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 385 transitions. [2018-12-03 03:20:36,118 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 385 transitions. Word has length 94 [2018-12-03 03:20:36,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 03:20:36,119 INFO L480 AbstractCegarLoop]: Abstraction has 339 states and 385 transitions. [2018-12-03 03:20:36,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-03 03:20:36,119 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 385 transitions. [2018-12-03 03:20:36,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-12-03 03:20:36,119 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 03:20:36,120 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 03:20:36,120 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 03:20:36,120 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 03:20:36,120 INFO L82 PathProgramCache]: Analyzing trace with hash -503291792, now seen corresponding path program 1 times [2018-12-03 03:20:36,120 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 03:20:36,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 03:20:36,120 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 03:20:36,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 03:20:36,121 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 03:20:36,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 03:20:36,158 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-03 03:20:36,158 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 03:20:36,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 03:20:36,158 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 03:20:36,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 03:20:36,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 03:20:36,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 03:20:36,159 INFO L87 Difference]: Start difference. First operand 339 states and 385 transitions. Second operand 4 states. [2018-12-03 03:20:36,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 03:20:36,274 INFO L93 Difference]: Finished difference Result 999 states and 1192 transitions. [2018-12-03 03:20:36,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 03:20:36,274 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2018-12-03 03:20:36,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 03:20:36,276 INFO L225 Difference]: With dead ends: 999 [2018-12-03 03:20:36,276 INFO L226 Difference]: Without dead ends: 684 [2018-12-03 03:20:36,277 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 03:20:36,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2018-12-03 03:20:36,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 669. [2018-12-03 03:20:36,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 669 states. [2018-12-03 03:20:36,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 779 transitions. [2018-12-03 03:20:36,300 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 779 transitions. Word has length 94 [2018-12-03 03:20:36,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 03:20:36,300 INFO L480 AbstractCegarLoop]: Abstraction has 669 states and 779 transitions. [2018-12-03 03:20:36,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 03:20:36,301 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 779 transitions. [2018-12-03 03:20:36,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-12-03 03:20:36,302 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 03:20:36,302 INFO L402 BasicCegarLoop]: trace histogram [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] [2018-12-03 03:20:36,302 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 03:20:36,302 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 03:20:36,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1178440330, now seen corresponding path program 1 times [2018-12-03 03:20:36,302 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 03:20:36,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 03:20:36,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 03:20:36,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 03:20:36,303 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 03:20:36,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 03:20:36,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-03 03:20:36,385 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 03:20:36,385 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 03:20:36,385 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 99 with the following transitions: [2018-12-03 03:20:36,386 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [3], [7], [10], [18], [19], [20], [23], [25], [26], [27], [30], [32], [35], [45], [46], [50], [51], [53], [62], [66], [70], [73], [78], [81], [86], [92], [97], [105], [106], [107], [108], [109], [111], [116], [119], [120], [122], [127], [129], [130], [135], [137], [169], [173], [180], [181], [189], [197], [201], [202], [205], [207], [210], [212], [215], [224], [225], [226], [227], [228], [229], [230], [231], [232], [234], [236], [237], [238], [239], [240], [241], [246], [247], [248], [249], [252], [256], [257], [258], [259], [260], [261], [268], [269], [270], [272], [273], [274], [276], [277], [278], [279], [280] [2018-12-03 03:20:36,409 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-03 03:20:36,409 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 03:20:36,700 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-03 03:20:36,701 INFO L272 AbstractInterpreter]: Visited 96 different actions 98 times. Never merged. Never widened. Performed 3122 root evaluator evaluations with a maximum evaluation depth of 3. Performed 3122 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 133 variables. [2018-12-03 03:20:36,705 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 03:20:36,706 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-03 03:20:36,706 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 03:20:36,706 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bd2f13d4-6b22-4ac8-897a-532aa52a01e4/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-03 03:20:36,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 03:20:36,713 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-03 03:20:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 03:20:36,797 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 03:20:36,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 03:20:36,948 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 03:20:37,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-03 03:20:37,305 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-12-03 03:20:37,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [13, 9] total 25 [2018-12-03 03:20:37,305 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 03:20:37,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-03 03:20:37,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-03 03:20:37,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2018-12-03 03:20:37,306 INFO L87 Difference]: Start difference. First operand 669 states and 779 transitions. Second operand 8 states. [2018-12-03 03:20:37,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 03:20:37,453 INFO L93 Difference]: Finished difference Result 1288 states and 1509 transitions. [2018-12-03 03:20:37,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-03 03:20:37,454 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2018-12-03 03:20:37,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 03:20:37,455 INFO L225 Difference]: With dead ends: 1288 [2018-12-03 03:20:37,455 INFO L226 Difference]: Without dead ends: 643 [2018-12-03 03:20:37,457 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 180 SyntacticMatches, 6 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2018-12-03 03:20:37,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2018-12-03 03:20:37,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2018-12-03 03:20:37,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2018-12-03 03:20:37,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 736 transitions. [2018-12-03 03:20:37,476 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 736 transitions. Word has length 98 [2018-12-03 03:20:37,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 03:20:37,476 INFO L480 AbstractCegarLoop]: Abstraction has 643 states and 736 transitions. [2018-12-03 03:20:37,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-03 03:20:37,477 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 736 transitions. [2018-12-03 03:20:37,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-12-03 03:20:37,478 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 03:20:37,478 INFO L402 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 03:20:37,478 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 03:20:37,478 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 03:20:37,478 INFO L82 PathProgramCache]: Analyzing trace with hash 945536832, now seen corresponding path program 1 times [2018-12-03 03:20:37,479 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 03:20:37,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 03:20:37,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 03:20:37,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 03:20:37,479 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 03:20:37,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 03:20:37,539 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-12-03 03:20:37,539 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 03:20:37,539 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 03:20:37,540 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 139 with the following transitions: [2018-12-03 03:20:37,540 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [3], [7], [10], [18], [19], [20], [23], [25], [26], [27], [30], [32], [35], [42], [45], [46], [50], [51], [52], [53], [62], [66], [70], [73], [78], [81], [84], [86], [92], [97], [105], [106], [107], [108], [109], [111], [116], [119], [120], [122], [127], [129], [130], [135], [137], [166], [169], [173], [179], [180], [181], [184], [188], [189], [197], [201], [202], [205], [207], [210], [212], [215], [221], [223], [224], [225], [226], [227], [228], [229], [230], [231], [232], [234], [236], [237], [238], [239], [240], [241], [244], [245], [246], [247], [248], [249], [252], [253], [256], [257], [258], [259], [260], [261], [266], [267], [268], [269], [270], [271], [272], [273], [274], [276], [277], [278], [279], [280] [2018-12-03 03:20:37,543 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-03 03:20:37,543 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 03:20:38,147 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-03 03:20:38,147 INFO L272 AbstractInterpreter]: Visited 104 different actions 189 times. Merged at 9 different actions 14 times. Never widened. Performed 10326 root evaluator evaluations with a maximum evaluation depth of 3. Performed 10326 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 2 fixpoints after 1 different actions. Largest state had 133 variables. [2018-12-03 03:20:38,149 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 03:20:38,149 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-03 03:20:38,149 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 03:20:38,149 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bd2f13d4-6b22-4ac8-897a-532aa52a01e4/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-03 03:20:38,156 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 03:20:38,156 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-03 03:20:38,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 03:20:38,233 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 03:20:38,253 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-03 03:20:38,253 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 03:20:38,372 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-12-03 03:20:38,387 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-12-03 03:20:38,387 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2018-12-03 03:20:38,387 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 03:20:38,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-03 03:20:38,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-03 03:20:38,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-12-03 03:20:38,388 INFO L87 Difference]: Start difference. First operand 643 states and 736 transitions. Second operand 5 states. [2018-12-03 03:20:38,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 03:20:38,631 INFO L93 Difference]: Finished difference Result 1366 states and 1655 transitions. [2018-12-03 03:20:38,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-03 03:20:38,632 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2018-12-03 03:20:38,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 03:20:38,635 INFO L225 Difference]: With dead ends: 1366 [2018-12-03 03:20:38,635 INFO L226 Difference]: Without dead ends: 865 [2018-12-03 03:20:38,637 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 276 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2018-12-03 03:20:38,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2018-12-03 03:20:38,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 645. [2018-12-03 03:20:38,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 645 states. [2018-12-03 03:20:38,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 736 transitions. [2018-12-03 03:20:38,676 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 736 transitions. Word has length 138 [2018-12-03 03:20:38,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 03:20:38,676 INFO L480 AbstractCegarLoop]: Abstraction has 645 states and 736 transitions. [2018-12-03 03:20:38,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-03 03:20:38,676 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 736 transitions. [2018-12-03 03:20:38,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-12-03 03:20:38,678 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 03:20:38,678 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 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] [2018-12-03 03:20:38,678 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 03:20:38,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 03:20:38,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1818604634, now seen corresponding path program 1 times [2018-12-03 03:20:38,679 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 03:20:38,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 03:20:38,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 03:20:38,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 03:20:38,680 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 03:20:38,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 03:20:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 03:20:38,760 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-03 03:20:38,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 03:20:38 BoogieIcfgContainer [2018-12-03 03:20:38,849 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 03:20:38,849 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-03 03:20:38,849 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-03 03:20:38,849 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-03 03:20:38,850 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:20:34" (3/4) ... [2018-12-03 03:20:38,851 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-03 03:20:38,934 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_bd2f13d4-6b22-4ac8-897a-532aa52a01e4/bin-2019/utaipan/witness.graphml [2018-12-03 03:20:38,934 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-03 03:20:38,934 INFO L168 Benchmark]: Toolchain (without parser) took 5146.89 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 306.7 MB). Free memory was 945.9 MB in the beginning and 909.5 MB in the end (delta: 36.5 MB). Peak memory consumption was 343.2 MB. Max. memory is 11.5 GB. [2018-12-03 03:20:38,935 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 03:20:38,935 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.16 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.5 MB). Free memory was 945.9 MB in the beginning and 1.1 GB in the end (delta: -157.1 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. [2018-12-03 03:20:38,935 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.97 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-12-03 03:20:38,935 INFO L168 Benchmark]: Boogie Preprocessor took 21.38 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 03:20:38,936 INFO L168 Benchmark]: RCFGBuilder took 309.36 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 11.5 GB. [2018-12-03 03:20:38,936 INFO L168 Benchmark]: TraceAbstraction took 4426.37 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 188.2 MB). Free memory was 1.1 GB in the beginning and 957.7 MB in the end (delta: 97.1 MB). Peak memory consumption was 285.3 MB. Max. memory is 11.5 GB. [2018-12-03 03:20:38,936 INFO L168 Benchmark]: Witness Printer took 84.50 ms. Allocated memory is still 1.3 GB. Free memory was 957.7 MB in the beginning and 909.5 MB in the end (delta: 48.3 MB). Peak memory consumption was 48.3 MB. Max. memory is 11.5 GB. [2018-12-03 03:20:38,937 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 281.16 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.5 MB). Free memory was 945.9 MB in the beginning and 1.1 GB in the end (delta: -157.1 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.97 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.38 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 309.36 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4426.37 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 188.2 MB). Free memory was 1.1 GB in the beginning and 957.7 MB in the end (delta: 97.1 MB). Peak memory consumption was 285.3 MB. Max. memory is 11.5 GB. * Witness Printer took 84.50 ms. Allocated memory is still 1.3 GB. Free memory was 957.7 MB in the beginning and 909.5 MB in the end (delta: 48.3 MB). Peak memory consumption was 48.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 764]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L413] int waterLevel = 1; [L414] int methaneLevelCritical = 0; [L581] int pumpRunning = 0; [L582] int systemActive = 1; [L833] int cleanupTimeShifts = 4; VAL [\old(cleanupTimeShifts)=193, \old(head)=200, \old(head)=178, \old(methaneLevelCritical)=152, \old(pumpRunning)=140, \old(systemActive)=139, \old(waterLevel)=142, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L906] int retValue_acc ; [L907] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L911] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L912] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L913] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L824] int retValue_acc ; [L827] retValue_acc = 1 [L828] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L913] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L913] tmp = valid_product() [L915] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L917] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L918] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L900] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L511] int splverifierCounter ; [L512] int tmp ; [L513] int tmp___0 ; [L514] int tmp___1 ; [L515] int tmp___2 ; [L518] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L520] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L522] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L528] tmp = __VERIFIER_nondet_int() [L530] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L532] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L431] COND TRUE waterLevel < 2 [L432] waterLevel = waterLevel + 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L532] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L538] tmp___0 = __VERIFIER_nondet_int() [L540] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L548] tmp___2 = __VERIFIER_nondet_int() [L550] COND FALSE !(\read(tmp___2)) [L556] tmp___1 = __VERIFIER_nondet_int() [L558] COND FALSE !(\read(tmp___1)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L565] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L589] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L596] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L598] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L618] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L621] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L623] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L733] int retValue_acc ; [L734] int tmp ; [L735] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L739] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L493] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L496] COND FALSE !(waterLevel < 2) [L500] retValue_acc = 0 [L501] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L739] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L739] tmp = isHighWaterSensorDry() [L741] COND FALSE !(\read(tmp)) [L744] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L746] retValue_acc = tmp___0 [L747] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L623] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L623] tmp = isHighWaterLevel() [L625] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L627] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L652] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L656] CALL, EXPR isMethaneAlarm() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L677] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L681] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L452] int retValue_acc ; [L455] retValue_acc = methaneLevelCritical [L456] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L681] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L681] retValue_acc = isMethaneLevelCritical() [L683] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L656] RET, EXPR isMethaneAlarm() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneAlarm()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L656] tmp = isMethaneAlarm() [L658] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, waterLevel=2] [L662] CALL activatePump__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L646] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L662] RET activatePump__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=2] [L627] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L598] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L604] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L770] int tmp ; [L771] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L775] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L452] int retValue_acc ; [L455] retValue_acc = methaneLevelCritical [L456] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=2] [L775] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L775] tmp = isMethaneLevelCritical() [L777] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=2] [L604] RET __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L565] RET timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L520] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L522] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L528] tmp = __VERIFIER_nondet_int() [L530] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L538] tmp___0 = __VERIFIER_nondet_int() [L540] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=0, tmp___2=0, waterLevel=2] [L542] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L443] COND FALSE !(\read(methaneLevelCritical)) [L446] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L542] RET changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=0, tmp___2=0, waterLevel=2] [L548] tmp___2 = __VERIFIER_nondet_int() [L550] COND FALSE !(\read(tmp___2)) [L556] tmp___1 = __VERIFIER_nondet_int() [L558] COND FALSE !(\read(tmp___1)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=0, tmp___2=0, waterLevel=2] [L565] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L589] COND TRUE \read(pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L591] CALL lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L419] COND TRUE waterLevel > 0 [L420] waterLevel = waterLevel - 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L591] RET lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L596] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L598] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L618] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L621] COND FALSE !(! pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L636] FCALL processEnvironment__wrappee__base() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L598] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L604] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L770] int tmp ; [L771] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L775] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L452] int retValue_acc ; [L455] retValue_acc = methaneLevelCritical [L456] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L775] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L775] tmp = isMethaneLevelCritical() [L777] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L779] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L688] int retValue_acc ; [L691] retValue_acc = pumpRunning [L692] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L779] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L779] tmp___0 = isPumpRunning() [L781] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L783] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L764] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 26 procedures, 134 locations, 1 error locations. UNSAFE Result, 4.3s OverallTime, 12 OverallIterations, 3 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1670 SDtfs, 919 SDslu, 3327 SDs, 0 SdLazy, 1436 SolverSat, 321 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 582 GetRequests, 497 SyntacticMatches, 9 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=669occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.9s AbstIntTime, 2 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 302 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 1245 NumberOfCodeBlocks, 1245 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 1332 ConstructedInterpolants, 0 QuantifiedInterpolants, 211346 SizeOfPredicates, 7 NumberOfNonLiveVariables, 1588 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 15 InterpolantComputations, 11 PerfectInterpolantSequences, 115/123 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...