/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product50.cil.c


--------------------------------------------------------------------------------


This is Ultimate 0.1.25-72570d3
[2020-08-22 21:12:53,942 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-08-22 21:12:53,945 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-08-22 21:12:53,988 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-08-22 21:12:53,988 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-08-22 21:12:54,000 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-08-22 21:12:54,001 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-08-22 21:12:54,005 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-08-22 21:12:54,007 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-08-22 21:12:54,007 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-08-22 21:12:54,008 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-08-22 21:12:54,011 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-08-22 21:12:54,012 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-08-22 21:12:54,015 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-08-22 21:12:54,016 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-08-22 21:12:54,019 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-08-22 21:12:54,021 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-08-22 21:12:54,022 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-08-22 21:12:54,025 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-08-22 21:12:54,029 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-08-22 21:12:54,034 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-08-22 21:12:54,034 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-08-22 21:12:54,035 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-08-22 21:12:54,036 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-08-22 21:12:54,041 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-08-22 21:12:54,041 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-08-22 21:12:54,042 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-08-22 21:12:54,045 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-08-22 21:12:54,045 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-08-22 21:12:54,046 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-08-22 21:12:54,046 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-08-22 21:12:54,047 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-08-22 21:12:54,047 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-08-22 21:12:54,048 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-08-22 21:12:54,049 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-08-22 21:12:54,050 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
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[2020-08-22 21:12:54,051 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-08-22 21:12:54,052 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-08-22 21:12:54,053 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-08-22 21:12:54,054 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf
[2020-08-22 21:12:54,074 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-08-22 21:12:54,075 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-08-22 21:12:54,076 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-08-22 21:12:54,077 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-08-22 21:12:54,077 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-08-22 21:12:54,077 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-08-22 21:12:54,077 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-08-22 21:12:54,077 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-08-22 21:12:54,078 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-08-22 21:12:54,078 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-08-22 21:12:54,079 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-08-22 21:12:54,079 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-08-22 21:12:54,079 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-08-22 21:12:54,080 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-08-22 21:12:54,080 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-08-22 21:12:54,080 INFO  L138        SettingsManager]:  * Size of a code block=SingleStatement
[2020-08-22 21:12:54,081 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-08-22 21:12:54,081 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-08-22 21:12:54,081 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-22 21:12:54,081 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-08-22 21:12:54,081 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2020-08-22 21:12:54,081 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-08-22 21:12:54,082 INFO  L138        SettingsManager]:  * Use separate solver for trace checks=false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true
[2020-08-22 21:12:54,354 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-08-22 21:12:54,366 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-08-22 21:12:54,369 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-08-22 21:12:54,371 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-08-22 21:12:54,371 INFO  L275        PluginConnector]: CDTParser initialized
[2020-08-22 21:12:54,372 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product50.cil.c
[2020-08-22 21:12:54,454 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55c1aa792/754eb97599804032a2cdd55fc1b7747a/FLAGcc1bfcd99
[2020-08-22 21:12:55,028 INFO  L306              CDTParser]: Found 1 translation units.
[2020-08-22 21:12:55,039 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product50.cil.c
[2020-08-22 21:12:55,060 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55c1aa792/754eb97599804032a2cdd55fc1b7747a/FLAGcc1bfcd99
[2020-08-22 21:12:55,341 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55c1aa792/754eb97599804032a2cdd55fc1b7747a
[2020-08-22 21:12:55,350 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-08-22 21:12:55,352 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-08-22 21:12:55,353 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-08-22 21:12:55,353 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-08-22 21:12:55,357 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-08-22 21:12:55,358 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 09:12:55" (1/1) ...
[2020-08-22 21:12:55,361 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64fd6845 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:12:55, skipping insertion in model container
[2020-08-22 21:12:55,361 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 09:12:55" (1/1) ...
[2020-08-22 21:12:55,369 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-08-22 21:12:55,426 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-08-22 21:12:55,857 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-22 21:12:55,868 INFO  L203         MainTranslator]: Completed pre-run
[2020-08-22 21:12:55,962 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-22 21:12:56,002 INFO  L208         MainTranslator]: Completed translation
[2020-08-22 21:12:56,002 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:12:56 WrapperNode
[2020-08-22 21:12:56,003 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-08-22 21:12:56,003 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-08-22 21:12:56,004 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-08-22 21:12:56,004 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-08-22 21:12:56,016 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:12:56" (1/1) ...
[2020-08-22 21:12:56,016 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:12:56" (1/1) ...
[2020-08-22 21:12:56,034 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:12:56" (1/1) ...
[2020-08-22 21:12:56,035 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:12:56" (1/1) ...
[2020-08-22 21:12:56,089 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:12:56" (1/1) ...
[2020-08-22 21:12:56,106 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:12:56" (1/1) ...
[2020-08-22 21:12:56,114 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:12:56" (1/1) ...
[2020-08-22 21:12:56,121 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-08-22 21:12:56,122 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-08-22 21:12:56,122 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-08-22 21:12:56,122 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-08-22 21:12:56,123 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:12:56" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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
[2020-08-22 21:12:56,190 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-08-22 21:12:56,191 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-08-22 21:12:56,191 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-08-22 21:12:56,191 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1
[2020-08-22 21:12:56,191 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-08-22 21:12:56,192 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-08-22 21:12:56,192 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-08-22 21:12:56,192 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-08-22 21:12:56,192 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-08-22 21:12:56,192 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-08-22 21:12:56,192 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry
[2020-08-22 21:12:56,193 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry
[2020-08-22 21:12:56,193 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-08-22 21:12:56,193 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-08-22 21:12:56,194 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-08-22 21:12:56,194 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-08-22 21:12:56,194 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-08-22 21:12:56,195 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-08-22 21:12:56,195 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-08-22 21:12:56,196 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-08-22 21:12:56,196 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-08-22 21:12:56,196 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-08-22 21:12:56,198 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-08-22 21:12:56,199 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-08-22 21:12:56,199 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base
[2020-08-22 21:12:56,199 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor
[2020-08-22 21:12:56,199 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-08-22 21:12:56,199 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-08-22 21:12:56,199 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-08-22 21:12:56,199 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-08-22 21:12:56,200 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-08-22 21:12:56,200 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-08-22 21:12:56,200 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterLevel
[2020-08-22 21:12:56,200 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterLevel
[2020-08-22 21:12:56,200 INFO  L138     BoogieDeclarations]: Found implementation of procedure startSystem
[2020-08-22 21:12:56,200 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-08-22 21:12:56,200 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-08-22 21:12:56,200 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-08-22 21:12:56,200 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-08-22 21:12:56,200 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-08-22 21:12:56,201 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-08-22 21:12:56,201 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-08-22 21:12:56,201 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-08-22 21:12:56,201 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-08-22 21:12:56,201 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-08-22 21:12:56,202 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-08-22 21:12:56,202 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-08-22 21:12:56,202 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1
[2020-08-22 21:12:56,202 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-08-22 21:12:56,202 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-08-22 21:12:56,202 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-08-22 21:12:56,203 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-08-22 21:12:56,203 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-08-22 21:12:56,203 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry
[2020-08-22 21:12:56,203 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry
[2020-08-22 21:12:56,203 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-08-22 21:12:56,203 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-08-22 21:12:56,204 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-08-22 21:12:56,204 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-08-22 21:12:56,204 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-08-22 21:12:56,204 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-08-22 21:12:56,204 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-08-22 21:12:56,204 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-08-22 21:12:56,204 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-08-22 21:12:56,205 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-08-22 21:12:56,205 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-08-22 21:12:56,205 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-08-22 21:12:56,205 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-08-22 21:12:56,205 INFO  L130     BoogieDeclarations]: Found specification of procedure startSystem
[2020-08-22 21:12:56,205 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-08-22 21:12:56,205 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-08-22 21:12:56,206 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-08-22 21:12:56,206 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base
[2020-08-22 21:12:56,206 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterLevel
[2020-08-22 21:12:56,206 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor
[2020-08-22 21:12:56,206 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterLevel
[2020-08-22 21:12:56,207 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-08-22 21:12:56,207 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-08-22 21:12:56,207 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-08-22 21:12:56,207 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-08-22 21:12:56,208 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-08-22 21:12:56,208 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-08-22 21:12:56,208 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-08-22 21:12:56,208 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-08-22 21:12:56,208 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-08-22 21:12:56,209 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-08-22 21:12:56,209 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-08-22 21:12:56,210 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-08-22 21:12:56,210 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-08-22 21:12:56,210 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-08-22 21:12:56,211 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-08-22 21:12:56,211 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-08-22 21:12:56,211 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-08-22 21:12:56,211 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-08-22 21:12:56,212 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-08-22 21:12:56,212 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-08-22 21:12:57,284 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-08-22 21:12:57,284 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-08-22 21:12:57,290 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 09:12:57 BoogieIcfgContainer
[2020-08-22 21:12:57,291 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-08-22 21:12:57,292 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-08-22 21:12:57,292 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-08-22 21:12:57,296 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-08-22 21:12:57,296 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 09:12:55" (1/3) ...
[2020-08-22 21:12:57,297 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b5c49bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 09:12:57, skipping insertion in model container
[2020-08-22 21:12:57,297 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:12:56" (2/3) ...
[2020-08-22 21:12:57,297 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b5c49bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 09:12:57, skipping insertion in model container
[2020-08-22 21:12:57,298 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 09:12:57" (3/3) ...
[2020-08-22 21:12:57,300 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec1_product50.cil.c
[2020-08-22 21:12:57,311 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-08-22 21:12:57,320 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-08-22 21:12:57,334 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-08-22 21:12:57,357 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-08-22 21:12:57,357 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-08-22 21:12:57,357 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-08-22 21:12:57,357 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-08-22 21:12:57,358 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-08-22 21:12:57,358 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-08-22 21:12:57,358 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-08-22 21:12:57,358 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-08-22 21:12:57,377 INFO  L276                IsEmpty]: Start isEmpty. Operand 322 states.
[2020-08-22 21:12:57,398 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 143
[2020-08-22 21:12:57,399 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-22 21:12:57,400 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-22 21:12:57,400 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-22 21:12:57,406 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-22 21:12:57,406 INFO  L82        PathProgramCache]: Analyzing trace with hash -2015468822, now seen corresponding path program 1 times
[2020-08-22 21:12:57,413 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-22 21:12:57,414 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344696811]
[2020-08-22 21:12:57,414 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-22 21:12:57,748 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:12:58,199 WARN  L193               SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-22 21:12:58,202 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-22 21:12:58,222 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:12:58,386 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-08-22 21:12:58,388 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:12:58,392 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-08-22 21:12:58,393 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:12:58,394 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-08-22 21:12:58,401 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:12:58,403 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-08-22 21:12:58,404 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:12:58,406 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120
[2020-08-22 21:12:58,408 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:12:58,411 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130
[2020-08-22 21:12:58,415 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:12:58,447 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-22 21:12:58,449 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344696811]
[2020-08-22 21:12:58,451 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-22 21:12:58,452 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-08-22 21:12:58,462 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733473866]
[2020-08-22 21:12:58,469 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-08-22 21:12:58,469 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-22 21:12:58,484 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-08-22 21:12:58,485 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-08-22 21:12:58,487 INFO  L87              Difference]: Start difference. First operand 322 states. Second operand 3 states.
[2020-08-22 21:12:59,982 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-22 21:12:59,983 INFO  L93              Difference]: Finished difference Result 498 states and 590 transitions.
[2020-08-22 21:12:59,984 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-08-22 21:12:59,985 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 142
[2020-08-22 21:12:59,986 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-22 21:13:00,004 INFO  L225             Difference]: With dead ends: 498
[2020-08-22 21:13:00,004 INFO  L226             Difference]: Without dead ends: 307
[2020-08-22 21:13:00,010 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-08-22 21:13:00,032 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 307 states.
[2020-08-22 21:13:00,146 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 265.
[2020-08-22 21:13:00,148 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 265 states.
[2020-08-22 21:13:00,151 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 287 transitions.
[2020-08-22 21:13:00,153 INFO  L78                 Accepts]: Start accepts. Automaton has 265 states and 287 transitions. Word has length 142
[2020-08-22 21:13:00,154 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-22 21:13:00,154 INFO  L479      AbstractCegarLoop]: Abstraction has 265 states and 287 transitions.
[2020-08-22 21:13:00,154 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-08-22 21:13:00,155 INFO  L276                IsEmpty]: Start isEmpty. Operand 265 states and 287 transitions.
[2020-08-22 21:13:00,159 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 144
[2020-08-22 21:13:00,160 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-22 21:13:00,160 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-22 21:13:00,160 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-08-22 21:13:00,160 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-22 21:13:00,161 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-22 21:13:00,161 INFO  L82        PathProgramCache]: Analyzing trace with hash -631468838, now seen corresponding path program 1 times
[2020-08-22 21:13:00,161 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-22 21:13:00,162 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828873270]
[2020-08-22 21:13:00,162 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-22 21:13:00,217 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:00,552 WARN  L193               SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-22 21:13:00,553 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-22 21:13:00,562 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:00,615 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-08-22 21:13:00,616 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:00,618 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-08-22 21:13:00,619 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:00,621 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-08-22 21:13:00,622 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:00,624 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-08-22 21:13:00,625 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:00,626 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2020-08-22 21:13:00,627 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:00,630 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131
[2020-08-22 21:13:00,631 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:00,660 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-22 21:13:00,660 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828873270]
[2020-08-22 21:13:00,661 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-22 21:13:00,661 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-08-22 21:13:00,662 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213042556]
[2020-08-22 21:13:00,665 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-08-22 21:13:00,666 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-22 21:13:00,666 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-08-22 21:13:00,666 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-08-22 21:13:00,666 INFO  L87              Difference]: Start difference. First operand 265 states and 287 transitions. Second operand 4 states.
[2020-08-22 21:13:01,323 WARN  L193               SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-22 21:13:02,313 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-22 21:13:02,314 INFO  L93              Difference]: Finished difference Result 411 states and 461 transitions.
[2020-08-22 21:13:02,315 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-08-22 21:13:02,316 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 143
[2020-08-22 21:13:02,317 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-22 21:13:02,320 INFO  L225             Difference]: With dead ends: 411
[2020-08-22 21:13:02,320 INFO  L226             Difference]: Without dead ends: 290
[2020-08-22 21:13:02,322 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-08-22 21:13:02,323 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 290 states.
[2020-08-22 21:13:02,422 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 255.
[2020-08-22 21:13:02,422 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 255 states.
[2020-08-22 21:13:02,424 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 274 transitions.
[2020-08-22 21:13:02,425 INFO  L78                 Accepts]: Start accepts. Automaton has 255 states and 274 transitions. Word has length 143
[2020-08-22 21:13:02,425 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-22 21:13:02,425 INFO  L479      AbstractCegarLoop]: Abstraction has 255 states and 274 transitions.
[2020-08-22 21:13:02,425 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-08-22 21:13:02,426 INFO  L276                IsEmpty]: Start isEmpty. Operand 255 states and 274 transitions.
[2020-08-22 21:13:02,428 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 157
[2020-08-22 21:13:02,428 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-22 21:13:02,429 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-22 21:13:02,429 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-08-22 21:13:02,429 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-22 21:13:02,429 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-22 21:13:02,430 INFO  L82        PathProgramCache]: Analyzing trace with hash -604508154, now seen corresponding path program 1 times
[2020-08-22 21:13:02,430 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-22 21:13:02,430 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131742730]
[2020-08-22 21:13:02,430 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-22 21:13:02,472 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:02,774 WARN  L193               SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-22 21:13:02,776 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-22 21:13:02,784 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:02,819 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-08-22 21:13:02,820 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:02,821 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-08-22 21:13:02,822 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:02,823 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-08-22 21:13:02,824 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:02,862 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-08-22 21:13:02,862 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:02,874 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124
[2020-08-22 21:13:02,875 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:02,890 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134
[2020-08-22 21:13:02,891 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:02,893 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144
[2020-08-22 21:13:02,894 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:02,920 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-22 21:13:02,920 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131742730]
[2020-08-22 21:13:02,920 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-22 21:13:02,921 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2020-08-22 21:13:02,921 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456847664]
[2020-08-22 21:13:02,923 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-08-22 21:13:02,923 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-22 21:13:02,923 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-08-22 21:13:02,924 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90
[2020-08-22 21:13:02,924 INFO  L87              Difference]: Start difference. First operand 255 states and 274 transitions. Second operand 10 states.
[2020-08-22 21:13:03,418 WARN  L193               SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-22 21:13:03,743 WARN  L193               SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-22 21:13:03,998 WARN  L193               SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 192
[2020-08-22 21:13:04,285 WARN  L193               SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-22 21:13:04,528 WARN  L193               SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-08-22 21:13:04,756 WARN  L193               SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-22 21:13:06,370 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-22 21:13:06,370 INFO  L93              Difference]: Finished difference Result 457 states and 523 transitions.
[2020-08-22 21:13:06,371 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-08-22 21:13:06,371 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 156
[2020-08-22 21:13:06,372 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-22 21:13:06,375 INFO  L225             Difference]: With dead ends: 457
[2020-08-22 21:13:06,376 INFO  L226             Difference]: Without dead ends: 312
[2020-08-22 21:13:06,377 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272
[2020-08-22 21:13:06,378 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 312 states.
[2020-08-22 21:13:06,445 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 255.
[2020-08-22 21:13:06,445 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 255 states.
[2020-08-22 21:13:06,447 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 273 transitions.
[2020-08-22 21:13:06,447 INFO  L78                 Accepts]: Start accepts. Automaton has 255 states and 273 transitions. Word has length 156
[2020-08-22 21:13:06,448 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-22 21:13:06,448 INFO  L479      AbstractCegarLoop]: Abstraction has 255 states and 273 transitions.
[2020-08-22 21:13:06,448 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-08-22 21:13:06,448 INFO  L276                IsEmpty]: Start isEmpty. Operand 255 states and 273 transitions.
[2020-08-22 21:13:06,451 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 170
[2020-08-22 21:13:06,451 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-22 21:13:06,451 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-22 21:13:06,451 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-08-22 21:13:06,451 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-22 21:13:06,452 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-22 21:13:06,452 INFO  L82        PathProgramCache]: Analyzing trace with hash 561125926, now seen corresponding path program 1 times
[2020-08-22 21:13:06,452 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-22 21:13:06,452 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442769940]
[2020-08-22 21:13:06,453 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-22 21:13:06,488 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:06,736 WARN  L193               SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-22 21:13:06,738 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-22 21:13:06,762 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:06,795 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-08-22 21:13:06,796 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:06,797 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-08-22 21:13:06,798 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:06,799 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-08-22 21:13:06,800 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:06,802 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-08-22 21:13:06,803 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:06,817 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124
[2020-08-22 21:13:06,818 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:06,827 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131
[2020-08-22 21:13:06,828 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:06,831 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-22 21:13:06,832 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:06,845 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-22 21:13:06,846 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:06,847 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147
[2020-08-22 21:13:06,848 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:06,849 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157
[2020-08-22 21:13:06,850 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:06,916 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-22 21:13:06,917 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442769940]
[2020-08-22 21:13:06,917 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-22 21:13:06,917 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-08-22 21:13:06,918 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078120980]
[2020-08-22 21:13:06,918 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-08-22 21:13:06,919 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-22 21:13:06,919 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-08-22 21:13:06,919 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2020-08-22 21:13:06,919 INFO  L87              Difference]: Start difference. First operand 255 states and 273 transitions. Second operand 7 states.
[2020-08-22 21:13:07,548 WARN  L193               SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-22 21:13:09,215 WARN  L193               SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-22 21:13:10,121 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-22 21:13:10,122 INFO  L93              Difference]: Finished difference Result 637 states and 753 transitions.
[2020-08-22 21:13:10,122 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2020-08-22 21:13:10,122 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 169
[2020-08-22 21:13:10,123 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-22 21:13:10,127 INFO  L225             Difference]: With dead ends: 637
[2020-08-22 21:13:10,127 INFO  L226             Difference]: Without dead ends: 492
[2020-08-22 21:13:10,129 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210
[2020-08-22 21:13:10,130 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 492 states.
[2020-08-22 21:13:10,340 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 365.
[2020-08-22 21:13:10,341 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 365 states.
[2020-08-22 21:13:10,342 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 392 transitions.
[2020-08-22 21:13:10,343 INFO  L78                 Accepts]: Start accepts. Automaton has 365 states and 392 transitions. Word has length 169
[2020-08-22 21:13:10,343 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-22 21:13:10,344 INFO  L479      AbstractCegarLoop]: Abstraction has 365 states and 392 transitions.
[2020-08-22 21:13:10,344 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-08-22 21:13:10,344 INFO  L276                IsEmpty]: Start isEmpty. Operand 365 states and 392 transitions.
[2020-08-22 21:13:10,346 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 194
[2020-08-22 21:13:10,346 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-22 21:13:10,347 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-22 21:13:10,347 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-08-22 21:13:10,347 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-22 21:13:10,347 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-22 21:13:10,347 INFO  L82        PathProgramCache]: Analyzing trace with hash 1803845393, now seen corresponding path program 1 times
[2020-08-22 21:13:10,348 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-22 21:13:10,348 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12947829]
[2020-08-22 21:13:10,348 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-22 21:13:10,382 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:10,683 WARN  L193               SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-22 21:13:10,684 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-22 21:13:10,709 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:10,760 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-08-22 21:13:10,761 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:10,763 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-08-22 21:13:10,763 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:10,765 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-08-22 21:13:10,766 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:10,768 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-08-22 21:13:10,769 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:10,784 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124
[2020-08-22 21:13:10,785 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:10,801 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131
[2020-08-22 21:13:10,804 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:10,808 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-22 21:13:10,810 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:10,815 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-22 21:13:10,816 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:10,818 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-22 21:13:10,819 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:10,822 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26
[2020-08-22 21:13:10,822 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:10,826 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171
[2020-08-22 21:13:10,827 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:10,862 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181
[2020-08-22 21:13:10,863 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:10,935 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-22 21:13:10,936 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12947829]
[2020-08-22 21:13:10,936 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-22 21:13:10,936 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2020-08-22 21:13:10,937 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755730378]
[2020-08-22 21:13:10,938 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-08-22 21:13:10,938 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-22 21:13:10,939 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-08-22 21:13:10,939 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90
[2020-08-22 21:13:10,939 INFO  L87              Difference]: Start difference. First operand 365 states and 392 transitions. Second operand 10 states.
[2020-08-22 21:13:11,633 WARN  L193               SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-22 21:13:13,356 WARN  L193               SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-22 21:13:13,600 WARN  L193               SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-08-22 21:13:13,862 WARN  L193               SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-22 21:13:14,113 WARN  L193               SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-08-22 21:13:14,347 WARN  L193               SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-22 21:13:14,566 WARN  L193               SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-22 21:13:14,777 WARN  L193               SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-22 21:13:15,142 WARN  L193               SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-22 21:13:16,681 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-22 21:13:16,682 INFO  L93              Difference]: Finished difference Result 1064 states and 1283 transitions.
[2020-08-22 21:13:16,683 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2020-08-22 21:13:16,683 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 193
[2020-08-22 21:13:16,683 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-22 21:13:16,694 INFO  L225             Difference]: With dead ends: 1064
[2020-08-22 21:13:16,694 INFO  L226             Difference]: Without dead ends: 809
[2020-08-22 21:13:16,696 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506
[2020-08-22 21:13:16,697 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 809 states.
[2020-08-22 21:13:16,934 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 583.
[2020-08-22 21:13:16,934 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 583 states.
[2020-08-22 21:13:16,938 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 632 transitions.
[2020-08-22 21:13:16,938 INFO  L78                 Accepts]: Start accepts. Automaton has 583 states and 632 transitions. Word has length 193
[2020-08-22 21:13:16,939 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-22 21:13:16,939 INFO  L479      AbstractCegarLoop]: Abstraction has 583 states and 632 transitions.
[2020-08-22 21:13:16,939 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-08-22 21:13:16,939 INFO  L276                IsEmpty]: Start isEmpty. Operand 583 states and 632 transitions.
[2020-08-22 21:13:16,942 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 199
[2020-08-22 21:13:16,942 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-22 21:13:16,943 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-22 21:13:16,943 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-08-22 21:13:16,943 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-22 21:13:16,943 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-22 21:13:16,944 INFO  L82        PathProgramCache]: Analyzing trace with hash 2050601923, now seen corresponding path program 1 times
[2020-08-22 21:13:16,944 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-22 21:13:16,944 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970408332]
[2020-08-22 21:13:16,944 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-22 21:13:16,974 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:17,215 WARN  L193               SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-22 21:13:17,216 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-22 21:13:17,232 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:17,256 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-08-22 21:13:17,257 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:17,258 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-08-22 21:13:17,258 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:17,259 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-08-22 21:13:17,260 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:17,261 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-08-22 21:13:17,262 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:17,284 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120
[2020-08-22 21:13:17,285 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:17,295 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129
[2020-08-22 21:13:17,296 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:17,307 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136
[2020-08-22 21:13:17,309 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:17,313 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-22 21:13:17,315 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:17,318 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-22 21:13:17,319 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:17,322 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-22 21:13:17,323 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:17,324 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26
[2020-08-22 21:13:17,326 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:17,329 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176
[2020-08-22 21:13:17,329 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:17,331 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186
[2020-08-22 21:13:17,332 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:17,439 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-22 21:13:17,440 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970408332]
[2020-08-22 21:13:17,441 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-22 21:13:17,441 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2020-08-22 21:13:17,442 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432926105]
[2020-08-22 21:13:17,442 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-08-22 21:13:17,443 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-22 21:13:17,443 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-08-22 21:13:17,443 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110
[2020-08-22 21:13:17,443 INFO  L87              Difference]: Start difference. First operand 583 states and 632 transitions. Second operand 11 states.
[2020-08-22 21:13:17,931 WARN  L193               SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-22 21:13:19,437 WARN  L193               SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-22 21:13:19,676 WARN  L193               SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-22 21:13:19,940 WARN  L193               SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-08-22 21:13:20,168 WARN  L193               SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-22 21:13:20,448 WARN  L193               SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-22 21:13:20,709 WARN  L193               SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-08-22 21:13:20,945 WARN  L193               SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-22 21:13:21,212 WARN  L193               SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-22 21:13:22,772 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-22 21:13:22,772 INFO  L93              Difference]: Finished difference Result 944 states and 1166 transitions.
[2020-08-22 21:13:22,773 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. 
[2020-08-22 21:13:22,773 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 198
[2020-08-22 21:13:22,774 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-22 21:13:22,780 INFO  L225             Difference]: With dead ends: 944
[2020-08-22 21:13:22,780 INFO  L226             Difference]: Without dead ends: 941
[2020-08-22 21:13:22,781 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=261, Invalid=669, Unknown=0, NotChecked=0, Total=930
[2020-08-22 21:13:22,783 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 941 states.
[2020-08-22 21:13:22,942 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 583.
[2020-08-22 21:13:22,942 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 583 states.
[2020-08-22 21:13:22,945 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 631 transitions.
[2020-08-22 21:13:22,946 INFO  L78                 Accepts]: Start accepts. Automaton has 583 states and 631 transitions. Word has length 198
[2020-08-22 21:13:22,946 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-22 21:13:22,946 INFO  L479      AbstractCegarLoop]: Abstraction has 583 states and 631 transitions.
[2020-08-22 21:13:22,946 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-08-22 21:13:22,947 INFO  L276                IsEmpty]: Start isEmpty. Operand 583 states and 631 transitions.
[2020-08-22 21:13:22,949 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 200
[2020-08-22 21:13:22,949 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-22 21:13:22,950 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-22 21:13:22,950 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-08-22 21:13:22,950 INFO  L427      AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-22 21:13:22,950 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-22 21:13:22,950 INFO  L82        PathProgramCache]: Analyzing trace with hash -1064023592, now seen corresponding path program 1 times
[2020-08-22 21:13:22,951 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-22 21:13:22,951 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468961454]
[2020-08-22 21:13:22,951 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-22 21:13:22,978 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:23,194 WARN  L193               SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-22 21:13:23,195 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-22 21:13:23,201 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:23,225 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-08-22 21:13:23,226 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:23,227 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-08-22 21:13:23,228 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:23,228 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-08-22 21:13:23,229 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:23,230 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-08-22 21:13:23,231 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:23,238 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120
[2020-08-22 21:13:23,239 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:23,247 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129
[2020-08-22 21:13:23,248 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:23,259 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136
[2020-08-22 21:13:23,262 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:23,266 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-22 21:13:23,269 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:23,300 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-22 21:13:23,307 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:23,363 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-22 21:13:23,364 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:23,366 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26
[2020-08-22 21:13:23,367 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:23,373 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177
[2020-08-22 21:13:23,374 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:23,375 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187
[2020-08-22 21:13:23,376 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:23,485 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-22 21:13:23,486 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468961454]
[2020-08-22 21:13:23,486 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-22 21:13:23,486 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2020-08-22 21:13:23,487 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515256048]
[2020-08-22 21:13:23,488 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-08-22 21:13:23,488 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-22 21:13:23,489 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-08-22 21:13:23,489 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110
[2020-08-22 21:13:23,489 INFO  L87              Difference]: Start difference. First operand 583 states and 631 transitions. Second operand 11 states.
[2020-08-22 21:13:24,697 WARN  L193               SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-22 21:13:24,931 WARN  L193               SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-22 21:13:25,184 WARN  L193               SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 194
[2020-08-22 21:13:25,410 WARN  L193               SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-22 21:13:25,660 WARN  L193               SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-22 21:13:25,909 WARN  L193               SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-22 21:13:27,540 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-22 21:13:27,541 INFO  L93              Difference]: Finished difference Result 1424 states and 1717 transitions.
[2020-08-22 21:13:27,541 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2020-08-22 21:13:27,541 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 199
[2020-08-22 21:13:27,542 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-22 21:13:27,548 INFO  L225             Difference]: With dead ends: 1424
[2020-08-22 21:13:27,548 INFO  L226             Difference]: Without dead ends: 951
[2020-08-22 21:13:27,550 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420
[2020-08-22 21:13:27,551 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 951 states.
[2020-08-22 21:13:27,753 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 599.
[2020-08-22 21:13:27,753 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 599 states.
[2020-08-22 21:13:27,755 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 647 transitions.
[2020-08-22 21:13:27,756 INFO  L78                 Accepts]: Start accepts. Automaton has 599 states and 647 transitions. Word has length 199
[2020-08-22 21:13:27,758 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-22 21:13:27,758 INFO  L479      AbstractCegarLoop]: Abstraction has 599 states and 647 transitions.
[2020-08-22 21:13:27,758 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-08-22 21:13:27,758 INFO  L276                IsEmpty]: Start isEmpty. Operand 599 states and 647 transitions.
[2020-08-22 21:13:27,770 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 200
[2020-08-22 21:13:27,770 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-22 21:13:27,770 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-22 21:13:27,772 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2020-08-22 21:13:27,772 INFO  L427      AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-22 21:13:27,772 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-22 21:13:27,772 INFO  L82        PathProgramCache]: Analyzing trace with hash -2037893768, now seen corresponding path program 1 times
[2020-08-22 21:13:27,773 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-22 21:13:27,773 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628584083]
[2020-08-22 21:13:27,773 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-22 21:13:27,804 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:28,034 WARN  L193               SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-22 21:13:28,034 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-22 21:13:28,041 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:28,059 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-08-22 21:13:28,060 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:28,060 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-08-22 21:13:28,061 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:28,061 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-08-22 21:13:28,062 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:28,093 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-08-22 21:13:28,093 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:28,102 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120
[2020-08-22 21:13:28,103 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:28,113 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129
[2020-08-22 21:13:28,114 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:28,125 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136
[2020-08-22 21:13:28,127 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:28,130 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-22 21:13:28,138 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:28,141 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-22 21:13:28,143 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:28,169 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-22 21:13:28,170 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:28,198 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26
[2020-08-22 21:13:28,199 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:28,202 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177
[2020-08-22 21:13:28,203 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:28,204 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187
[2020-08-22 21:13:28,204 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:28,238 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-22 21:13:28,239 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628584083]
[2020-08-22 21:13:28,239 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-22 21:13:28,239 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14
[2020-08-22 21:13:28,239 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100405912]
[2020-08-22 21:13:28,240 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 14 states
[2020-08-22 21:13:28,240 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-22 21:13:28,240 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-08-22 21:13:28,241 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182
[2020-08-22 21:13:28,241 INFO  L87              Difference]: Start difference. First operand 599 states and 647 transitions. Second operand 14 states.
[2020-08-22 21:13:28,772 WARN  L193               SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-22 21:13:29,003 WARN  L193               SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-22 21:13:29,242 WARN  L193               SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-22 21:13:29,484 WARN  L193               SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-22 21:13:29,715 WARN  L193               SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-22 21:13:30,581 WARN  L193               SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-22 21:13:30,804 WARN  L193               SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-22 21:13:31,048 WARN  L193               SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-22 21:13:31,297 WARN  L193               SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-22 21:13:31,513 WARN  L193               SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-22 21:13:33,538 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-22 21:13:33,538 INFO  L93              Difference]: Finished difference Result 1462 states and 1780 transitions.
[2020-08-22 21:13:33,539 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. 
[2020-08-22 21:13:33,539 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states. Word has length 199
[2020-08-22 21:13:33,539 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-22 21:13:33,545 INFO  L225             Difference]: With dead ends: 1462
[2020-08-22 21:13:33,545 INFO  L226             Difference]: Without dead ends: 973
[2020-08-22 21:13:33,547 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756
[2020-08-22 21:13:33,549 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 973 states.
[2020-08-22 21:13:33,825 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 611.
[2020-08-22 21:13:33,825 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 611 states.
[2020-08-22 21:13:33,828 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 659 transitions.
[2020-08-22 21:13:33,829 INFO  L78                 Accepts]: Start accepts. Automaton has 611 states and 659 transitions. Word has length 199
[2020-08-22 21:13:33,829 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-22 21:13:33,829 INFO  L479      AbstractCegarLoop]: Abstraction has 611 states and 659 transitions.
[2020-08-22 21:13:33,829 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 14 states.
[2020-08-22 21:13:33,829 INFO  L276                IsEmpty]: Start isEmpty. Operand 611 states and 659 transitions.
[2020-08-22 21:13:33,832 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 200
[2020-08-22 21:13:33,832 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-22 21:13:33,832 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-22 21:13:33,832 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2020-08-22 21:13:33,833 INFO  L427      AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-22 21:13:33,833 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-22 21:13:33,833 INFO  L82        PathProgramCache]: Analyzing trace with hash 616779547, now seen corresponding path program 1 times
[2020-08-22 21:13:33,833 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-22 21:13:33,834 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883440772]
[2020-08-22 21:13:33,834 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-22 21:13:33,866 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:34,094 WARN  L193               SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-22 21:13:34,095 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-22 21:13:34,110 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:34,130 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-08-22 21:13:34,131 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:34,132 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-08-22 21:13:34,132 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:34,133 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-08-22 21:13:34,134 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:34,135 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-08-22 21:13:34,135 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:34,154 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120
[2020-08-22 21:13:34,155 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:34,166 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129
[2020-08-22 21:13:34,166 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:34,177 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136
[2020-08-22 21:13:34,180 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:34,191 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-22 21:13:34,194 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:34,204 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-22 21:13:34,206 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:34,216 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-22 21:13:34,217 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:34,226 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26
[2020-08-22 21:13:34,226 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:34,229 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177
[2020-08-22 21:13:34,230 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:34,231 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187
[2020-08-22 21:13:34,231 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 21:13:34,268 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-22 21:13:34,269 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883440772]
[2020-08-22 21:13:34,269 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-22 21:13:34,269 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-08-22 21:13:34,269 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997333725]
[2020-08-22 21:13:34,270 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-08-22 21:13:34,270 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-22 21:13:34,270 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-08-22 21:13:34,270 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2020-08-22 21:13:34,271 INFO  L87              Difference]: Start difference. First operand 611 states and 659 transitions. Second operand 8 states.
[2020-08-22 21:13:34,742 WARN  L193               SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-22 21:13:35,310 WARN  L193               SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-22 21:13:38,702 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-22 21:13:38,703 INFO  L93              Difference]: Finished difference Result 2131 states and 2675 transitions.
[2020-08-22 21:13:38,703 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. 
[2020-08-22 21:13:38,703 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 199
[2020-08-22 21:13:38,704 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-22 21:13:38,715 INFO  L225             Difference]: With dead ends: 2131
[2020-08-22 21:13:38,716 INFO  L226             Difference]: Without dead ends: 1630
[2020-08-22 21:13:38,727 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650
[2020-08-22 21:13:38,729 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1630 states.
[2020-08-22 21:13:39,078 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1053.
[2020-08-22 21:13:39,078 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1053 states.
[2020-08-22 21:13:39,082 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1175 transitions.
[2020-08-22 21:13:39,083 INFO  L78                 Accepts]: Start accepts. Automaton has 1053 states and 1175 transitions. Word has length 199
[2020-08-22 21:13:39,083 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-22 21:13:39,083 INFO  L479      AbstractCegarLoop]: Abstraction has 1053 states and 1175 transitions.
[2020-08-22 21:13:39,083 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-08-22 21:13:39,084 INFO  L276                IsEmpty]: Start isEmpty. Operand 1053 states and 1175 transitions.
[2020-08-22 21:13:39,086 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 205
[2020-08-22 21:13:39,086 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-22 21:13:39,086 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-22 21:13:39,087 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2020-08-22 21:13:39,087 INFO  L427      AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-22 21:13:39,087 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-22 21:13:39,087 INFO  L82        PathProgramCache]: Analyzing trace with hash -1803221553, now seen corresponding path program 1 times
[2020-08-22 21:13:39,087 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-22 21:13:39,088 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273163603]
[2020-08-22 21:13:39,088 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-22 21:13:39,142 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-08-22 21:13:39,143 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-08-22 21:13:39,188 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-08-22 21:13:39,189 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-08-22 21:13:39,362 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-08-22 21:13:39,362 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-08-22 21:13:39,363 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2020-08-22 21:13:39,603 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 09:13:39 BoogieIcfgContainer
[2020-08-22 21:13:39,603 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-08-22 21:13:39,606 INFO  L168              Benchmark]: Toolchain (without parser) took 44254.12 ms. Allocated memory was 139.5 MB in the beginning and 916.5 MB in the end (delta: 777.0 MB). Free memory was 101.1 MB in the beginning and 73.5 MB in the end (delta: 27.6 MB). Peak memory consumption was 804.6 MB. Max. memory is 7.1 GB.
[2020-08-22 21:13:39,608 INFO  L168              Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB.
[2020-08-22 21:13:39,609 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 649.86 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 100.9 MB in the beginning and 169.1 MB in the end (delta: -68.2 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB.
[2020-08-22 21:13:39,612 INFO  L168              Benchmark]: Boogie Preprocessor took 118.00 ms. Allocated memory is still 202.9 MB. Free memory was 169.1 MB in the beginning and 165.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB.
[2020-08-22 21:13:39,614 INFO  L168              Benchmark]: RCFGBuilder took 1169.04 ms. Allocated memory was 202.9 MB in the beginning and 237.0 MB in the end (delta: 34.1 MB). Free memory was 165.2 MB in the beginning and 172.2 MB in the end (delta: -7.0 MB). Peak memory consumption was 80.6 MB. Max. memory is 7.1 GB.
[2020-08-22 21:13:39,614 INFO  L168              Benchmark]: TraceAbstraction took 42311.15 ms. Allocated memory was 237.0 MB in the beginning and 916.5 MB in the end (delta: 679.5 MB). Free memory was 172.2 MB in the beginning and 73.5 MB in the end (delta: 98.7 MB). Peak memory consumption was 778.2 MB. Max. memory is 7.1 GB.
[2020-08-22 21:13:39,627 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 649.86 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 100.9 MB in the beginning and 169.1 MB in the end (delta: -68.2 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 118.00 ms. Allocated memory is still 202.9 MB. Free memory was 169.1 MB in the beginning and 165.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 1169.04 ms. Allocated memory was 202.9 MB in the beginning and 237.0 MB in the end (delta: 34.1 MB). Free memory was 165.2 MB in the beginning and 172.2 MB in the end (delta: -7.0 MB). Peak memory consumption was 80.6 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 42311.15 ms. Allocated memory was 237.0 MB in the beginning and 916.5 MB in the end (delta: 679.5 MB). Free memory was 172.2 MB in the beginning and 73.5 MB in the end (delta: 98.7 MB). Peak memory consumption was 778.2 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 388]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L76]               int waterLevel  =    1;
        VAL         [\old(cleanupTimeShifts)=171, \old(head)=162, \old(head)=176, \old(methaneLevelCritical)=143, \old(pumpRunning)=135, \old(systemActive)=134, \old(waterLevel)=140, cleanupTimeShifts=171, head={176:162}, methaneLevelCritical=143, pumpRunning=135, systemActive=134, waterLevel=1]
[L77]               int methaneLevelCritical  =    0;
        VAL         [\old(cleanupTimeShifts)=171, \old(head)=176, \old(head)=162, \old(methaneLevelCritical)=143, \old(pumpRunning)=135, \old(systemActive)=134, \old(waterLevel)=140, cleanupTimeShifts=171, head={176:162}, methaneLevelCritical=0, pumpRunning=135, systemActive=134, waterLevel=1]
[L179]              int cleanupTimeShifts  =    4;
        VAL         [\old(cleanupTimeShifts)=171, \old(head)=176, \old(head)=162, \old(methaneLevelCritical)=143, \old(pumpRunning)=135, \old(systemActive)=134, \old(waterLevel)=140, cleanupTimeShifts=4, head={176:162}, methaneLevelCritical=0, pumpRunning=135, systemActive=134, waterLevel=1]
[L395]              int pumpRunning  =    0;
        VAL         [\old(cleanupTimeShifts)=171, \old(head)=176, \old(head)=162, \old(methaneLevelCritical)=143, \old(pumpRunning)=135, \old(systemActive)=134, \old(waterLevel)=140, cleanupTimeShifts=4, head={176:162}, methaneLevelCritical=0, pumpRunning=0, systemActive=134, waterLevel=1]
[L396]              int systemActive  =    1;
        VAL         [\old(cleanupTimeShifts)=171, \old(head)=176, \old(head)=162, \old(methaneLevelCritical)=143, \old(pumpRunning)=135, \old(systemActive)=134, \old(waterLevel)=140, cleanupTimeShifts=4, head={176:162}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1]
[L769]              static struct __ACC__ERR *head  =    (struct __ACC__ERR *)0;
        VAL         [\old(cleanupTimeShifts)=171, \old(head)=176, \old(head)=162, \old(methaneLevelCritical)=143, \old(pumpRunning)=135, \old(systemActive)=134, \old(waterLevel)=140, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1]
[L258]              int retValue_acc ;
        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]
[L259]              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]
[L263]  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]
[L264]  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]
[L265]  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]
[L307]              int retValue_acc ;
        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]
[L310]              retValue_acc = 1
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1]
[L311]              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]
[L265]  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]
[L265]              tmp = 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, tmp=1, valid_product()=1, waterLevel=1]
[L267]  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]
[L269]  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]
[L270]  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]
[L249]  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]
[L318]              int splverifierCounter ;
        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]
[L319]              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]
[L320]              int tmp___0 ;
        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]
[L321]              int tmp___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=1]
[L322]              int tmp___2 ;
        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]
[L325]              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]
[L327]  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]
[L329]  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]
[L335]              tmp = __VERIFIER_nondet_int()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, __VERIFIER_nondet_int()=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1]
[L337]  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]
[L339]  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]
[L94]   COND TRUE   waterLevel < 2
        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]
[L95]               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]
[L339]  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]
[L345]              tmp___0 = __VERIFIER_nondet_int()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, __VERIFIER_nondet_int()=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2]
[L347]  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=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2]
[L349]  CALL        changeMethaneLevel()
        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]
[L106]  COND FALSE  !(\read(methaneLevelCritical))
        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]
[L109]              methaneLevelCritical = 1
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L349]  RET         changeMethaneLevel()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2]
[L355]              tmp___2 = __VERIFIER_nondet_int()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, __VERIFIER_nondet_int()=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___2=1, waterLevel=2]
[L357]  COND TRUE   \read(tmp___2)
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___2=1, waterLevel=2]
[L359]  CALL        startSystem()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L595]              systemActive = 1
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L359]  RET         startSystem()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___2=1, waterLevel=2]
[L372]  CALL        timeShift()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L402]  COND FALSE  !(\read(pumpRunning))
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L409]  COND TRUE   \read(systemActive)
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L411]  CALL        processEnvironment()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L457]              int tmp ;
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L460]  COND FALSE  !(\read(pumpRunning))
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L475]  CALL        processEnvironment__wrappee__highWaterSensor()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L431]              int tmp ;
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L434]  COND TRUE   ! pumpRunning
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L436]  CALL, EXPR  isHighWaterLevel()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L554]              int retValue_acc ;
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L555]              int tmp ;
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L556]              int tmp___0 ;
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L560]  CALL, EXPR  isHighWaterSensorDry()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L156]              int retValue_acc ;
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L159]  COND FALSE  !(waterLevel < 2)
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L163]              retValue_acc = 0
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2]
[L164]              return (retValue_acc);
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2]
[L560]  RET, EXPR   isHighWaterSensorDry()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L560]              tmp = isHighWaterSensorDry()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, waterLevel=2]
[L562]  COND FALSE  !(\read(tmp))
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, waterLevel=2]
[L565]              tmp___0 = 1
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2]
[L567]              retValue_acc = tmp___0
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2]
[L568]              return (retValue_acc);
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2]
[L436]  RET, EXPR   isHighWaterLevel()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L436]              tmp = isHighWaterLevel()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2]
[L438]  COND TRUE   \read(tmp)
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2]
[L440]  CALL        activatePump()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L485]              pumpRunning = 1
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2]
[L440]  RET         activatePump()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2]
[L475]  RET         processEnvironment__wrappee__highWaterSensor()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2]
[L411]  RET         processEnvironment()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2]
[L417]  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=1, pumpRunning=1, systemActive=1, waterLevel=2]
[L44]               int tmp ;
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2]
[L45]               int tmp___0 ;
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2]
[L49]   CALL, EXPR  isMethaneLevelCritical()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2]
[L115]              int retValue_acc ;
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2]
[L118]              retValue_acc = methaneLevelCritical
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2]
[L119]              return (retValue_acc);
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2]
[L49]   RET, EXPR   isMethaneLevelCritical()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2]
[L49]               tmp = isMethaneLevelCritical()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2]
[L51]   COND TRUE   \read(tmp)
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2]
[L53]   CALL, EXPR  isPumpRunning()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2]
[L509]              int retValue_acc ;
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2]
[L512]              retValue_acc = pumpRunning
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2]
[L513]              return (retValue_acc);
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2]
[L53]   RET, EXPR   isPumpRunning()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2]
[L53]               tmp___0 = isPumpRunning()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2]
[L55]   COND TRUE   \read(tmp___0)
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2]
[L57]   CALL        __automaton_fail()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2]
[L388]              __VERIFIER_error()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2]

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 41 procedures, 641 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 42.0s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 34.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2278 SDtfs, 5324 SDslu, 4285 SDs, 0 SdLazy, 9414 SolverSat, 1576 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 410 GetRequests, 256 SyntacticMatches, 3 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 13.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1053occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 2136 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 1802 NumberOfCodeBlocks, 1802 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1589 ConstructedInterpolants, 0 QuantifiedInterpolants, 698751 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...