/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.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product25.cil.c


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


This is Ultimate 0.1.25-5644d1e-m
[2020-08-18 20:56:30,005 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-08-18 20:56:30,008 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-08-18 20:56:30,032 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-08-18 20:56:30,032 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-08-18 20:56:30,033 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-08-18 20:56:30,035 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-08-18 20:56:30,036 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-08-18 20:56:30,038 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-08-18 20:56:30,039 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-08-18 20:56:30,040 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-08-18 20:56:30,041 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-08-18 20:56:30,041 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-08-18 20:56:30,042 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-08-18 20:56:30,044 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-08-18 20:56:30,045 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-08-18 20:56:30,046 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-08-18 20:56:30,047 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-08-18 20:56:30,048 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-08-18 20:56:30,050 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-08-18 20:56:30,052 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-08-18 20:56:30,053 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-08-18 20:56:30,054 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-08-18 20:56:30,055 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-08-18 20:56:30,057 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-08-18 20:56:30,057 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-08-18 20:56:30,057 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-08-18 20:56:30,058 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-08-18 20:56:30,059 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-08-18 20:56:30,060 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-08-18 20:56:30,060 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-08-18 20:56:30,061 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-08-18 20:56:30,061 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-08-18 20:56:30,062 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-08-18 20:56:30,063 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-08-18 20:56:30,063 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-08-18 20:56:30,064 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-08-18 20:56:30,064 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-08-18 20:56:30,065 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-08-18 20:56:30,065 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-08-18 20:56:30,066 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-08-18 20:56:30,067 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-08-18 20:56:30,100 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-08-18 20:56:30,101 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-08-18 20:56:30,102 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-08-18 20:56:30,102 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-08-18 20:56:30,102 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-08-18 20:56:30,103 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-08-18 20:56:30,103 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-08-18 20:56:30,103 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-08-18 20:56:30,103 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-08-18 20:56:30,103 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-08-18 20:56:30,106 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-08-18 20:56:30,106 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-08-18 20:56:30,106 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-08-18 20:56:30,106 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-08-18 20:56:30,106 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-08-18 20:56:30,107 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-08-18 20:56:30,108 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-08-18 20:56:30,108 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-08-18 20:56:30,108 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-08-18 20:56:30,108 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-08-18 20:56:30,109 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-08-18 20:56:30,109 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-18 20:56:30,109 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-08-18 20:56:30,109 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-08-18 20:56:30,110 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-08-18 20:56:30,110 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-08-18 20:56:30,110 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-08-18 20:56:30,110 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-08-18 20:56:30,110 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-08-18 20:56:30,110 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
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: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST;
[2020-08-18 20:56:30,451 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-08-18 20:56:30,471 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-08-18 20:56:30,475 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-08-18 20:56:30,476 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-08-18 20:56:30,476 INFO  L275        PluginConnector]: CDTParser initialized
[2020-08-18 20:56:30,478 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product25.cil.c
[2020-08-18 20:56:30,546 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ff73f8cc/4a0fa303c5b74c6391ca78a44cbf7098/FLAG9a768ff30
[2020-08-18 20:56:31,022 INFO  L306              CDTParser]: Found 1 translation units.
[2020-08-18 20:56:31,023 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product25.cil.c
[2020-08-18 20:56:31,048 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ff73f8cc/4a0fa303c5b74c6391ca78a44cbf7098/FLAG9a768ff30
[2020-08-18 20:56:31,392 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ff73f8cc/4a0fa303c5b74c6391ca78a44cbf7098
[2020-08-18 20:56:31,402 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-08-18 20:56:31,404 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-08-18 20:56:31,407 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-08-18 20:56:31,408 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-08-18 20:56:31,412 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-08-18 20:56:31,413 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:56:31" (1/1) ...
[2020-08-18 20:56:31,416 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16606ffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:56:31, skipping insertion in model container
[2020-08-18 20:56:31,416 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:56:31" (1/1) ...
[2020-08-18 20:56:31,425 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-08-18 20:56:31,486 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-08-18 20:56:31,975 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-18 20:56:31,991 INFO  L203         MainTranslator]: Completed pre-run
[2020-08-18 20:56:32,064 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-18 20:56:32,101 INFO  L208         MainTranslator]: Completed translation
[2020-08-18 20:56:32,102 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:56:32 WrapperNode
[2020-08-18 20:56:32,102 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-08-18 20:56:32,103 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-08-18 20:56:32,103 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-08-18 20:56:32,103 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-08-18 20:56:32,113 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:56:32" (1/1) ...
[2020-08-18 20:56:32,113 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:56:32" (1/1) ...
[2020-08-18 20:56:32,132 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:56:32" (1/1) ...
[2020-08-18 20:56:32,133 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:56:32" (1/1) ...
[2020-08-18 20:56:32,166 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:56:32" (1/1) ...
[2020-08-18 20:56:32,176 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:56:32" (1/1) ...
[2020-08-18 20:56:32,182 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:56:32" (1/1) ...
[2020-08-18 20:56:32,190 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-08-18 20:56:32,191 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-08-18 20:56:32,191 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-08-18 20:56:32,191 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-08-18 20:56:32,192 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:56:32" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/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
[2020-08-18 20:56:32,253 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-08-18 20:56:32,253 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-08-18 20:56:32,253 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-08-18 20:56:32,254 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1
[2020-08-18 20:56:32,254 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-08-18 20:56:32,254 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-08-18 20:56:32,255 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-08-18 20:56:32,255 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-08-18 20:56:32,255 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-08-18 20:56:32,256 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-08-18 20:56:32,256 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-08-18 20:56:32,257 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-08-18 20:56:32,257 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-08-18 20:56:32,257 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-08-18 20:56:32,257 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-08-18 20:56:32,258 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-08-18 20:56:32,258 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-08-18 20:56:32,258 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry
[2020-08-18 20:56:32,258 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-08-18 20:56:32,259 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-08-18 20:56:32,260 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-08-18 20:56:32,260 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-08-18 20:56:32,260 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-08-18 20:56:32,260 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-08-18 20:56:32,261 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-08-18 20:56:32,262 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-08-18 20:56:32,262 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-08-18 20:56:32,262 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-08-18 20:56:32,263 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base
[2020-08-18 20:56:32,264 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-08-18 20:56:32,264 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor
[2020-08-18 20:56:32,264 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-08-18 20:56:32,264 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-08-18 20:56:32,264 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-08-18 20:56:32,264 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-08-18 20:56:32,264 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-08-18 20:56:32,264 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterLevel
[2020-08-18 20:56:32,265 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-08-18 20:56:32,265 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-08-18 20:56:32,265 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-08-18 20:56:32,265 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-08-18 20:56:32,265 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-08-18 20:56:32,265 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-08-18 20:56:32,265 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-08-18 20:56:32,265 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-08-18 20:56:32,265 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1
[2020-08-18 20:56:32,266 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-08-18 20:56:32,266 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-08-18 20:56:32,266 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-08-18 20:56:32,266 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-08-18 20:56:32,266 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-08-18 20:56:32,266 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-08-18 20:56:32,266 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-08-18 20:56:32,266 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-08-18 20:56:32,267 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-08-18 20:56:32,267 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-08-18 20:56:32,267 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-08-18 20:56:32,267 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-08-18 20:56:32,267 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-08-18 20:56:32,267 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-08-18 20:56:32,268 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-08-18 20:56:32,268 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-08-18 20:56:32,268 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-08-18 20:56:32,268 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-08-18 20:56:32,268 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-08-18 20:56:32,268 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-08-18 20:56:32,268 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-08-18 20:56:32,268 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry
[2020-08-18 20:56:32,269 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-08-18 20:56:32,269 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-08-18 20:56:32,269 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-08-18 20:56:32,269 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-08-18 20:56:32,269 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-08-18 20:56:32,269 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-08-18 20:56:32,269 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-08-18 20:56:32,270 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-08-18 20:56:32,270 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-08-18 20:56:32,270 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-08-18 20:56:32,270 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-08-18 20:56:32,270 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-08-18 20:56:32,270 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-08-18 20:56:32,271 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-08-18 20:56:32,271 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-08-18 20:56:32,271 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base
[2020-08-18 20:56:32,271 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterLevel
[2020-08-18 20:56:32,271 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor
[2020-08-18 20:56:32,271 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-08-18 20:56:32,272 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-08-18 20:56:32,272 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-08-18 20:56:32,272 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-08-18 20:56:33,432 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-08-18 20:56:33,433 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-08-18 20:56:33,438 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:56:33 BoogieIcfgContainer
[2020-08-18 20:56:33,438 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-08-18 20:56:33,440 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-08-18 20:56:33,440 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-08-18 20:56:33,443 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-08-18 20:56:33,444 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:56:31" (1/3) ...
[2020-08-18 20:56:33,444 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e24082 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:56:33, skipping insertion in model container
[2020-08-18 20:56:33,445 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:56:32" (2/3) ...
[2020-08-18 20:56:33,445 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e24082 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:56:33, skipping insertion in model container
[2020-08-18 20:56:33,445 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:56:33" (3/3) ...
[2020-08-18 20:56:33,447 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec3_product25.cil.c
[2020-08-18 20:56:33,458 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-08-18 20:56:33,467 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-08-18 20:56:33,481 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-08-18 20:56:33,506 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-08-18 20:56:33,506 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-08-18 20:56:33,507 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-08-18 20:56:33,507 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-08-18 20:56:33,507 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-08-18 20:56:33,507 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-08-18 20:56:33,508 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-08-18 20:56:33,508 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-08-18 20:56:33,530 INFO  L276                IsEmpty]: Start isEmpty. Operand 164 states.
[2020-08-18 20:56:33,541 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2020-08-18 20:56:33,541 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 20:56:33,542 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]
[2020-08-18 20:56:33,543 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 20:56:33,549 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 20:56:33,549 INFO  L82        PathProgramCache]: Analyzing trace with hash -950316372, now seen corresponding path program 1 times
[2020-08-18 20:56:33,558 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 20:56:33,559 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788923600]
[2020-08-18 20:56:33,559 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 20:56:33,817 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:34,236 WARN  L193               SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 20:56:34,238 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 20:56:34,249 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:34,285 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 20:56:34,286 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:34,288 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 20:56:34,289 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:34,290 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 20:56:34,291 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:34,293 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 20:56:34,293 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:34,294 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32
[2020-08-18 20:56:34,295 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:34,297 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2020-08-18 20:56:34,298 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:34,299 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44
[2020-08-18 20:56:34,304 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:34,333 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 20:56:34,340 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788923600]
[2020-08-18 20:56:34,343 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 20:56:34,343 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-08-18 20:56:34,344 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568983347]
[2020-08-18 20:56:34,351 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-08-18 20:56:34,351 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 20:56:34,366 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-08-18 20:56:34,367 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-08-18 20:56:34,369 INFO  L87              Difference]: Start difference. First operand 164 states. Second operand 3 states.
[2020-08-18 20:56:35,428 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 20:56:35,429 INFO  L93              Difference]: Finished difference Result 259 states and 341 transitions.
[2020-08-18 20:56:35,429 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-08-18 20:56:35,431 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 52
[2020-08-18 20:56:35,432 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 20:56:35,446 INFO  L225             Difference]: With dead ends: 259
[2020-08-18 20:56:35,446 INFO  L226             Difference]: Without dead ends: 140
[2020-08-18 20:56:35,451 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-08-18 20:56:35,472 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 140 states.
[2020-08-18 20:56:35,533 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 110.
[2020-08-18 20:56:35,535 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 110 states.
[2020-08-18 20:56:35,537 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 128 transitions.
[2020-08-18 20:56:35,539 INFO  L78                 Accepts]: Start accepts. Automaton has 110 states and 128 transitions. Word has length 52
[2020-08-18 20:56:35,539 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 20:56:35,540 INFO  L479      AbstractCegarLoop]: Abstraction has 110 states and 128 transitions.
[2020-08-18 20:56:35,540 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-08-18 20:56:35,540 INFO  L276                IsEmpty]: Start isEmpty. Operand 110 states and 128 transitions.
[2020-08-18 20:56:35,543 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 54
[2020-08-18 20:56:35,544 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 20:56:35,544 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]
[2020-08-18 20:56:35,544 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-08-18 20:56:35,544 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 20:56:35,545 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 20:56:35,545 INFO  L82        PathProgramCache]: Analyzing trace with hash 878728997, now seen corresponding path program 1 times
[2020-08-18 20:56:35,545 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 20:56:35,546 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835945216]
[2020-08-18 20:56:35,546 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 20:56:35,588 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:35,869 WARN  L193               SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 20:56:35,870 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 20:56:35,876 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:35,898 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 20:56:35,899 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:35,900 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 20:56:35,901 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:35,902 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 20:56:35,902 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:35,903 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 20:56:35,904 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:35,905 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33
[2020-08-18 20:56:35,906 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:35,907 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39
[2020-08-18 20:56:35,908 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:35,909 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2020-08-18 20:56:35,910 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:35,917 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 20:56:35,918 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835945216]
[2020-08-18 20:56:35,918 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 20:56:35,919 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-08-18 20:56:35,919 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879345317]
[2020-08-18 20:56:35,921 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-08-18 20:56:35,921 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 20:56:35,921 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-08-18 20:56:35,921 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-08-18 20:56:35,922 INFO  L87              Difference]: Start difference. First operand 110 states and 128 transitions. Second operand 4 states.
[2020-08-18 20:56:36,400 WARN  L193               SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-18 20:56:37,093 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 20:56:37,093 INFO  L93              Difference]: Finished difference Result 192 states and 232 transitions.
[2020-08-18 20:56:37,094 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-08-18 20:56:37,094 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 53
[2020-08-18 20:56:37,095 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 20:56:37,098 INFO  L225             Difference]: With dead ends: 192
[2020-08-18 20:56:37,098 INFO  L226             Difference]: Without dead ends: 124
[2020-08-18 20:56:37,099 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-08-18 20:56:37,100 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 124 states.
[2020-08-18 20:56:37,128 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 101.
[2020-08-18 20:56:37,129 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 101 states.
[2020-08-18 20:56:37,130 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 116 transitions.
[2020-08-18 20:56:37,130 INFO  L78                 Accepts]: Start accepts. Automaton has 101 states and 116 transitions. Word has length 53
[2020-08-18 20:56:37,130 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 20:56:37,130 INFO  L479      AbstractCegarLoop]: Abstraction has 101 states and 116 transitions.
[2020-08-18 20:56:37,131 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-08-18 20:56:37,131 INFO  L276                IsEmpty]: Start isEmpty. Operand 101 states and 116 transitions.
[2020-08-18 20:56:37,133 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 58
[2020-08-18 20:56:37,133 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 20:56:37,133 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]
[2020-08-18 20:56:37,133 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-08-18 20:56:37,134 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 20:56:37,134 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 20:56:37,134 INFO  L82        PathProgramCache]: Analyzing trace with hash 1316004347, now seen corresponding path program 1 times
[2020-08-18 20:56:37,134 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 20:56:37,135 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620037490]
[2020-08-18 20:56:37,135 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 20:56:37,168 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:37,448 WARN  L193               SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 20:56:37,450 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 20:56:37,465 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:37,487 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 20:56:37,488 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:37,490 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 20:56:37,490 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:37,491 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 20:56:37,492 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:37,504 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 20:56:37,506 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:37,507 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 20:56:37,508 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:37,509 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43
[2020-08-18 20:56:37,510 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:37,511 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49
[2020-08-18 20:56:37,511 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:37,520 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 20:56:37,521 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620037490]
[2020-08-18 20:56:37,521 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 20:56:37,521 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-08-18 20:56:37,521 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824575032]
[2020-08-18 20:56:37,522 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-08-18 20:56:37,522 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 20:56:37,523 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-08-18 20:56:37,523 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2020-08-18 20:56:37,523 INFO  L87              Difference]: Start difference. First operand 101 states and 116 transitions. Second operand 8 states.
[2020-08-18 20:56:37,911 WARN  L193               SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-18 20:56:38,216 WARN  L193               SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 20:56:38,449 WARN  L193               SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 20:56:38,676 WARN  L193               SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 20:56:39,628 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 20:56:39,628 INFO  L93              Difference]: Finished difference Result 201 states and 246 transitions.
[2020-08-18 20:56:39,632 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-08-18 20:56:39,632 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 57
[2020-08-18 20:56:39,633 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 20:56:39,634 INFO  L225             Difference]: With dead ends: 201
[2020-08-18 20:56:39,634 INFO  L226             Difference]: Without dead ends: 124
[2020-08-18 20:56:39,636 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-08-18 20:56:39,636 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 124 states.
[2020-08-18 20:56:39,669 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 101.
[2020-08-18 20:56:39,669 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 101 states.
[2020-08-18 20:56:39,670 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 115 transitions.
[2020-08-18 20:56:39,670 INFO  L78                 Accepts]: Start accepts. Automaton has 101 states and 115 transitions. Word has length 57
[2020-08-18 20:56:39,671 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 20:56:39,671 INFO  L479      AbstractCegarLoop]: Abstraction has 101 states and 115 transitions.
[2020-08-18 20:56:39,671 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-08-18 20:56:39,671 INFO  L276                IsEmpty]: Start isEmpty. Operand 101 states and 115 transitions.
[2020-08-18 20:56:39,673 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 66
[2020-08-18 20:56:39,674 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 20:56:39,674 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]
[2020-08-18 20:56:39,674 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-08-18 20:56:39,674 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 20:56:39,674 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 20:56:39,675 INFO  L82        PathProgramCache]: Analyzing trace with hash -402432006, now seen corresponding path program 1 times
[2020-08-18 20:56:39,675 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 20:56:39,675 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120507604]
[2020-08-18 20:56:39,675 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 20:56:39,704 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:39,993 WARN  L193               SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 20:56:39,995 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 20:56:40,007 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:40,024 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 20:56:40,025 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:40,027 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 20:56:40,028 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:40,029 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 20:56:40,030 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:40,031 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 20:56:40,032 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:40,046 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35
[2020-08-18 20:56:40,047 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:40,049 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 20:56:40,049 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:40,050 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2020-08-18 20:56:40,051 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:40,053 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2020-08-18 20:56:40,053 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:40,066 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57
[2020-08-18 20:56:40,067 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:40,077 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 20:56:40,077 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120507604]
[2020-08-18 20:56:40,078 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 20:56:40,078 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-08-18 20:56:40,078 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151457403]
[2020-08-18 20:56:40,078 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-08-18 20:56:40,079 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 20:56:40,079 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-08-18 20:56:40,079 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2020-08-18 20:56:40,079 INFO  L87              Difference]: Start difference. First operand 101 states and 115 transitions. Second operand 8 states.
[2020-08-18 20:56:40,446 WARN  L193               SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-18 20:56:41,668 WARN  L193               SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 20:56:41,960 WARN  L193               SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 20:56:42,228 WARN  L193               SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 20:56:42,506 WARN  L193               SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-18 20:56:43,037 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 20:56:43,038 INFO  L93              Difference]: Finished difference Result 299 states and 390 transitions.
[2020-08-18 20:56:43,039 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-08-18 20:56:43,039 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 65
[2020-08-18 20:56:43,040 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 20:56:43,044 INFO  L225             Difference]: With dead ends: 299
[2020-08-18 20:56:43,045 INFO  L226             Difference]: Without dead ends: 222
[2020-08-18 20:56:43,046 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182
[2020-08-18 20:56:43,047 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 222 states.
[2020-08-18 20:56:43,091 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 176.
[2020-08-18 20:56:43,092 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 176 states.
[2020-08-18 20:56:43,093 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 207 transitions.
[2020-08-18 20:56:43,094 INFO  L78                 Accepts]: Start accepts. Automaton has 176 states and 207 transitions. Word has length 65
[2020-08-18 20:56:43,094 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 20:56:43,094 INFO  L479      AbstractCegarLoop]: Abstraction has 176 states and 207 transitions.
[2020-08-18 20:56:43,094 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-08-18 20:56:43,095 INFO  L276                IsEmpty]: Start isEmpty. Operand 176 states and 207 transitions.
[2020-08-18 20:56:43,097 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 74
[2020-08-18 20:56:43,098 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 20:56:43,098 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]
[2020-08-18 20:56:43,098 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-08-18 20:56:43,098 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 20:56:43,099 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 20:56:43,099 INFO  L82        PathProgramCache]: Analyzing trace with hash -643922522, now seen corresponding path program 1 times
[2020-08-18 20:56:43,099 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 20:56:43,099 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394957267]
[2020-08-18 20:56:43,100 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 20:56:43,126 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:43,368 WARN  L193               SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 20:56:43,369 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 20:56:43,382 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:43,397 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 20:56:43,398 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:43,400 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 20:56:43,401 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:43,402 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 20:56:43,403 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:43,404 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 20:56:43,405 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:43,414 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28
[2020-08-18 20:56:43,415 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:43,417 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2020-08-18 20:56:43,418 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:43,426 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43
[2020-08-18 20:56:43,427 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:43,428 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 20:56:43,429 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:43,430 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53
[2020-08-18 20:56:43,430 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:43,431 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59
[2020-08-18 20:56:43,432 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:43,433 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65
[2020-08-18 20:56:43,434 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:56:43,446 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 20:56:43,446 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394957267]
[2020-08-18 20:56:43,447 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 20:56:43,447 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-08-18 20:56:43,447 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489024089]
[2020-08-18 20:56:43,448 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-08-18 20:56:43,448 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 20:56:43,448 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-08-18 20:56:43,449 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-08-18 20:56:43,449 INFO  L87              Difference]: Start difference. First operand 176 states and 207 transitions. Second operand 6 states.
[2020-08-18 20:56:43,797 WARN  L193               SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-18 20:56:44,322 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 20:56:44,322 INFO  L93              Difference]: Finished difference Result 289 states and 355 transitions.
[2020-08-18 20:56:44,322 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-08-18 20:56:44,323 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 73
[2020-08-18 20:56:44,323 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 20:56:44,325 INFO  L225             Difference]: With dead ends: 289
[2020-08-18 20:56:44,325 INFO  L226             Difference]: Without dead ends: 137
[2020-08-18 20:56:44,326 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72
[2020-08-18 20:56:44,327 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 137 states.
[2020-08-18 20:56:44,370 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 125.
[2020-08-18 20:56:44,370 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 125 states.
[2020-08-18 20:56:44,371 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 140 transitions.
[2020-08-18 20:56:44,372 INFO  L78                 Accepts]: Start accepts. Automaton has 125 states and 140 transitions. Word has length 73
[2020-08-18 20:56:44,372 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 20:56:44,372 INFO  L479      AbstractCegarLoop]: Abstraction has 125 states and 140 transitions.
[2020-08-18 20:56:44,372 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-08-18 20:56:44,372 INFO  L276                IsEmpty]: Start isEmpty. Operand 125 states and 140 transitions.
[2020-08-18 20:56:44,374 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 70
[2020-08-18 20:56:44,374 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 20:56:44,375 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]
[2020-08-18 20:56:44,375 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-08-18 20:56:44,375 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 20:56:44,375 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 20:56:44,375 INFO  L82        PathProgramCache]: Analyzing trace with hash 1866072192, now seen corresponding path program 1 times
[2020-08-18 20:56:44,376 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 20:56:44,376 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253713726]
[2020-08-18 20:56:44,376 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 20:56:44,430 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-08-18 20:56:44,433 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-08-18 20:56:44,433 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-08-18 20:56:44,438 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-08-18 20:56:44,466 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 08:56:44 BoogieIcfgContainer
[2020-08-18 20:56:44,466 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-08-18 20:56:44,468 INFO  L168              Benchmark]: Toolchain (without parser) took 13064.49 ms. Allocated memory was 137.4 MB in the beginning and 414.7 MB in the end (delta: 277.3 MB). Free memory was 99.4 MB in the beginning and 212.0 MB in the end (delta: -112.6 MB). Peak memory consumption was 164.7 MB. Max. memory is 7.1 GB.
[2020-08-18 20:56:44,469 INFO  L168              Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-08-18 20:56:44,470 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 695.16 ms. Allocated memory was 137.4 MB in the beginning and 202.9 MB in the end (delta: 65.5 MB). Free memory was 99.2 MB in the beginning and 168.4 MB in the end (delta: -69.3 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB.
[2020-08-18 20:56:44,471 INFO  L168              Benchmark]: Boogie Preprocessor took 87.38 ms. Allocated memory is still 202.9 MB. Free memory was 168.4 MB in the beginning and 164.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB.
[2020-08-18 20:56:44,472 INFO  L168              Benchmark]: RCFGBuilder took 1247.95 ms. Allocated memory was 202.9 MB in the beginning and 232.3 MB in the end (delta: 29.4 MB). Free memory was 164.2 MB in the beginning and 194.4 MB in the end (delta: -30.2 MB). Peak memory consumption was 85.0 MB. Max. memory is 7.1 GB.
[2020-08-18 20:56:44,472 INFO  L168              Benchmark]: TraceAbstraction took 11026.41 ms. Allocated memory was 232.3 MB in the beginning and 414.7 MB in the end (delta: 182.5 MB). Free memory was 194.4 MB in the beginning and 212.0 MB in the end (delta: -17.6 MB). Peak memory consumption was 164.9 MB. Max. memory is 7.1 GB.
[2020-08-18 20:56:44,476 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.20 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 695.16 ms. Allocated memory was 137.4 MB in the beginning and 202.9 MB in the end (delta: 65.5 MB). Free memory was 99.2 MB in the beginning and 168.4 MB in the end (delta: -69.3 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 87.38 ms. Allocated memory is still 202.9 MB. Free memory was 168.4 MB in the beginning and 164.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 1247.95 ms. Allocated memory was 202.9 MB in the beginning and 232.3 MB in the end (delta: 29.4 MB). Free memory was 164.2 MB in the beginning and 194.4 MB in the end (delta: -30.2 MB). Peak memory consumption was 85.0 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 11026.41 ms. Allocated memory was 232.3 MB in the beginning and 414.7 MB in the end (delta: 182.5 MB). Free memory was 194.4 MB in the beginning and 212.0 MB in the end (delta: -17.6 MB). Peak memory consumption was 164.9 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 82]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L256]              static struct __ACC__ERR *head  =    (struct __ACC__ERR *)0;
[L458]              int waterLevel  =    1;
[L459]              int methaneLevelCritical  =    0;
[L585]              int cleanupTimeShifts  =    4;
[L686]              int pumpRunning  =    0;
[L687]              int systemActive  =    1;
[L661]              int retValue_acc ;
[L662]              int tmp ;
[L666]  FCALL       select_helpers()
[L667]  FCALL       select_features()
[L668]  CALL, EXPR  valid_product()
[L576]              int retValue_acc ;
[L579]              retValue_acc = 1
[L580]              return (retValue_acc);
[L668]  RET, EXPR   valid_product()
[L668]              tmp = valid_product()
[L670]  COND TRUE   \read(tmp)
[L672]  FCALL       setup()
[L673]  CALL        runTest()
[L655]  CALL        test()
[L857]              int splverifierCounter ;
[L858]              int tmp ;
[L859]              int tmp___0 ;
[L860]              int tmp___1 ;
[L861]              int tmp___2 ;
[L864]              splverifierCounter = 0
[L866]  COND TRUE   1
[L868]  COND TRUE   splverifierCounter < 4
[L874]              tmp = __VERIFIER_nondet_int()
[L876]  COND TRUE   \read(tmp)
[L878]  CALL        waterRise()
[L476]  COND TRUE   waterLevel < 2
[L477]              waterLevel = waterLevel + 1
[L878]  RET         waterRise()
[L884]              tmp___0 = __VERIFIER_nondet_int()
[L886]  COND FALSE  !(\read(tmp___0))
[L894]              tmp___2 = __VERIFIER_nondet_int()
[L896]  COND TRUE   \read(tmp___2)
[L909]  CALL        timeShift()
[L693]  COND FALSE  !(\read(pumpRunning))
[L700]  COND TRUE   \read(systemActive)
[L702]  CALL        processEnvironment()
[L722]              int tmp ;
[L725]  COND FALSE  !(\read(pumpRunning))
[L740]  FCALL       processEnvironment__wrappee__base()
[L702]  RET         processEnvironment()
[L708]  CALL        __utac_acc__Specification3_spec__1()
[L45]               int tmp ;
[L46]               int tmp___0 ;
[L47]               int tmp___1 ;
[L51]   CALL, EXPR  isMethaneLevelCritical()
[L497]              int retValue_acc ;
[L500]              retValue_acc = methaneLevelCritical
[L501]              return (retValue_acc);
[L51]   RET, EXPR   isMethaneLevelCritical()
[L51]               tmp = isMethaneLevelCritical()
[L53]   COND FALSE  !(\read(tmp))
[L57]   CALL, EXPR  getWaterLevel()
[L529]              int retValue_acc ;
[L532]              retValue_acc = waterLevel
[L533]              return (retValue_acc);
[L57]   RET, EXPR   getWaterLevel()
[L57]               tmp___0 = getWaterLevel()
[L59]   COND TRUE   tmp___0 == 2
[L61]   CALL, EXPR  isPumpRunning()
[L792]              int retValue_acc ;
[L795]              retValue_acc = pumpRunning
[L796]              return (retValue_acc);
[L61]   RET, EXPR   isPumpRunning()
[L61]               tmp___1 = isPumpRunning()
[L63]   COND FALSE  !(\read(tmp___1))
[L67]   CALL        __automaton_fail()
[L82]               __VERIFIER_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 38 procedures, 224 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 8.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 445 SDtfs, 622 SDslu, 249 SDs, 0 SdLazy, 1325 SolverSat, 355 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=176occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 134 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 369 NumberOfCodeBlocks, 369 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 295 ConstructedInterpolants, 0 QuantifiedInterpolants, 84162 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...