/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=LOWLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product14.cil.c


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


This is Ultimate 0.1.25-5644d1e-m
[2020-08-18 18:31:11,983 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-08-18 18:31:11,986 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-08-18 18:31:12,010 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-08-18 18:31:12,011 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-08-18 18:31:12,012 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-08-18 18:31:12,013 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-08-18 18:31:12,015 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-08-18 18:31:12,017 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-08-18 18:31:12,018 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-08-18 18:31:12,019 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-08-18 18:31:12,020 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-08-18 18:31:12,020 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-08-18 18:31:12,021 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-08-18 18:31:12,022 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-08-18 18:31:12,023 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-08-18 18:31:12,024 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-08-18 18:31:12,025 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-08-18 18:31:12,027 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-08-18 18:31:12,029 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-08-18 18:31:12,034 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-08-18 18:31:12,035 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-08-18 18:31:12,039 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-08-18 18:31:12,040 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-08-18 18:31:12,043 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-08-18 18:31:12,043 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-08-18 18:31:12,043 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-08-18 18:31:12,044 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-08-18 18:31:12,044 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-08-18 18:31:12,045 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-08-18 18:31:12,046 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-08-18 18:31:12,046 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-08-18 18:31:12,047 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-08-18 18:31:12,048 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-08-18 18:31:12,049 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-08-18 18:31:12,049 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-08-18 18:31:12,049 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-08-18 18:31:12,050 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-08-18 18:31:12,050 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-08-18 18:31:12,051 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-08-18 18:31:12,051 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-08-18 18:31:12,052 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 18:31:12,074 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-08-18 18:31:12,074 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-08-18 18:31:12,075 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-08-18 18:31:12,075 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-08-18 18:31:12,076 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-08-18 18:31:12,076 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-08-18 18:31:12,076 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-08-18 18:31:12,076 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-08-18 18:31:12,076 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-08-18 18:31:12,077 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-08-18 18:31:12,077 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-08-18 18:31:12,077 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-08-18 18:31:12,077 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-08-18 18:31:12,077 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-08-18 18:31:12,077 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-08-18 18:31:12,078 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-08-18 18:31:12,078 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-08-18 18:31:12,078 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-08-18 18:31:12,078 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-08-18 18:31:12,079 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-08-18 18:31:12,079 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-08-18 18:31:12,079 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-18 18:31:12,079 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-08-18 18:31:12,079 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-08-18 18:31:12,079 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-08-18 18:31:12,080 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-08-18 18:31:12,080 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-08-18 18:31:12,080 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-08-18 18:31:12,080 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-08-18 18:31:12,080 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=LOWLEXORDER;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER;
[2020-08-18 18:31:12,394 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-08-18 18:31:12,406 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-08-18 18:31:12,410 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-08-18 18:31:12,412 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-08-18 18:31:12,412 INFO  L275        PluginConnector]: CDTParser initialized
[2020-08-18 18:31:12,416 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product14.cil.c
[2020-08-18 18:31:12,476 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69dc77622/b259b716c7e74f52950c12443a6c395e/FLAG382b0db6f
[2020-08-18 18:31:13,036 INFO  L306              CDTParser]: Found 1 translation units.
[2020-08-18 18:31:13,037 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product14.cil.c
[2020-08-18 18:31:13,049 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69dc77622/b259b716c7e74f52950c12443a6c395e/FLAG382b0db6f
[2020-08-18 18:31:13,313 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69dc77622/b259b716c7e74f52950c12443a6c395e
[2020-08-18 18:31:13,321 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-08-18 18:31:13,323 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-08-18 18:31:13,324 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-08-18 18:31:13,324 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-08-18 18:31:13,327 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-08-18 18:31:13,328 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:31:13" (1/1) ...
[2020-08-18 18:31:13,331 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bcf94a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:31:13, skipping insertion in model container
[2020-08-18 18:31:13,332 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:31:13" (1/1) ...
[2020-08-18 18:31:13,339 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-08-18 18:31:13,394 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-08-18 18:31:13,813 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-18 18:31:13,825 INFO  L203         MainTranslator]: Completed pre-run
[2020-08-18 18:31:13,916 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-18 18:31:13,960 INFO  L208         MainTranslator]: Completed translation
[2020-08-18 18:31:13,961 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:31:13 WrapperNode
[2020-08-18 18:31:13,961 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-08-18 18:31:13,962 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-08-18 18:31:13,962 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-08-18 18:31:13,962 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-08-18 18:31:13,973 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:31:13" (1/1) ...
[2020-08-18 18:31:13,973 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:31:13" (1/1) ...
[2020-08-18 18:31:13,993 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:31:13" (1/1) ...
[2020-08-18 18:31:13,993 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:31:13" (1/1) ...
[2020-08-18 18:31:14,040 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:31:13" (1/1) ...
[2020-08-18 18:31:14,052 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:31:13" (1/1) ...
[2020-08-18 18:31:14,060 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:31:13" (1/1) ...
[2020-08-18 18:31:14,086 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-08-18 18:31:14,086 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-08-18 18:31:14,086 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-08-18 18:31:14,087 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-08-18 18:31:14,087 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:31:13" (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 18:31:14,165 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-08-18 18:31:14,165 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-08-18 18:31:14,166 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-08-18 18:31:14,166 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-08-18 18:31:14,166 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-08-18 18:31:14,167 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-08-18 18:31:14,167 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-08-18 18:31:14,167 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-08-18 18:31:14,167 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1
[2020-08-18 18:31:14,167 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-08-18 18:31:14,168 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery
[2020-08-18 18:31:14,169 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-08-18 18:31:14,169 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base
[2020-08-18 18:31:14,169 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-08-18 18:31:14,169 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-08-18 18:31:14,170 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-08-18 18:31:14,170 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-08-18 18:31:14,170 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-08-18 18:31:14,171 INFO  L138     BoogieDeclarations]: Found implementation of procedure startSystem
[2020-08-18 18:31:14,171 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-08-18 18:31:14,171 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-08-18 18:31:14,171 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-08-18 18:31:14,171 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-08-18 18:31:14,171 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-08-18 18:31:14,171 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-08-18 18:31:14,172 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-08-18 18:31:14,172 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-08-18 18:31:14,173 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-08-18 18:31:14,173 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-08-18 18:31:14,173 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-08-18 18:31:14,173 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-08-18 18:31:14,173 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-08-18 18:31:14,174 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-08-18 18:31:14,174 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-08-18 18:31:14,174 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-08-18 18:31:14,174 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-08-18 18:31:14,174 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-08-18 18:31:14,174 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-08-18 18:31:14,174 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-08-18 18:31:14,175 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-08-18 18:31:14,175 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-08-18 18:31:14,175 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-08-18 18:31:14,175 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-08-18 18:31:14,175 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-08-18 18:31:14,177 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-08-18 18:31:14,177 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-08-18 18:31:14,177 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-08-18 18:31:14,177 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-08-18 18:31:14,177 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1
[2020-08-18 18:31:14,177 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-08-18 18:31:14,177 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-08-18 18:31:14,178 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-08-18 18:31:14,178 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-08-18 18:31:14,178 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-08-18 18:31:14,178 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-08-18 18:31:14,178 INFO  L130     BoogieDeclarations]: Found specification of procedure startSystem
[2020-08-18 18:31:14,179 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-08-18 18:31:14,179 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery
[2020-08-18 18:31:14,179 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-08-18 18:31:14,179 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base
[2020-08-18 18:31:14,179 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-08-18 18:31:14,180 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-08-18 18:31:14,180 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-08-18 18:31:14,180 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-08-18 18:31:14,180 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-08-18 18:31:14,180 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-08-18 18:31:14,180 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-08-18 18:31:14,180 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-08-18 18:31:14,181 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-08-18 18:31:14,181 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-08-18 18:31:14,182 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-08-18 18:31:14,182 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-08-18 18:31:14,183 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-08-18 18:31:14,183 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-08-18 18:31:14,183 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-08-18 18:31:14,183 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-08-18 18:31:14,184 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-08-18 18:31:14,185 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-08-18 18:31:14,185 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-08-18 18:31:14,185 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-08-18 18:31:14,185 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-08-18 18:31:14,185 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-08-18 18:31:14,186 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-08-18 18:31:14,186 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-08-18 18:31:14,186 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-08-18 18:31:14,186 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-08-18 18:31:14,186 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-08-18 18:31:14,187 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-08-18 18:31:15,329 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-08-18 18:31:15,329 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-08-18 18:31:15,335 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:31:15 BoogieIcfgContainer
[2020-08-18 18:31:15,335 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-08-18 18:31:15,336 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-08-18 18:31:15,336 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-08-18 18:31:15,340 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-08-18 18:31:15,340 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 06:31:13" (1/3) ...
[2020-08-18 18:31:15,341 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c3ab3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:31:15, skipping insertion in model container
[2020-08-18 18:31:15,341 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:31:13" (2/3) ...
[2020-08-18 18:31:15,341 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c3ab3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:31:15, skipping insertion in model container
[2020-08-18 18:31:15,342 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:31:15" (3/3) ...
[2020-08-18 18:31:15,343 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec3_product14.cil.c
[2020-08-18 18:31:15,354 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-08-18 18:31:15,362 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-08-18 18:31:15,376 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-08-18 18:31:15,401 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-08-18 18:31:15,401 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-08-18 18:31:15,402 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-08-18 18:31:15,402 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-08-18 18:31:15,402 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-08-18 18:31:15,402 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-08-18 18:31:15,403 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-08-18 18:31:15,403 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-08-18 18:31:15,424 INFO  L276                IsEmpty]: Start isEmpty. Operand 160 states.
[2020-08-18 18:31:15,435 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2020-08-18 18:31:15,435 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 18:31:15,436 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 18:31:15,437 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 18:31:15,442 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 18:31:15,442 INFO  L82        PathProgramCache]: Analyzing trace with hash 940922037, now seen corresponding path program 1 times
[2020-08-18 18:31:15,449 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 18:31:15,449 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935819522]
[2020-08-18 18:31:15,449 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 18:31:15,704 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:16,105 WARN  L193               SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 18:31:16,107 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 18:31:16,118 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:16,191 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 18:31:16,192 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:16,196 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 18:31:16,197 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:16,204 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 18:31:16,205 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:16,215 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 18:31:16,216 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:16,218 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32
[2020-08-18 18:31:16,222 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:16,228 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2020-08-18 18:31:16,229 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:16,231 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44
[2020-08-18 18:31:16,236 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:16,272 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 18:31:16,273 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935819522]
[2020-08-18 18:31:16,276 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 18:31:16,276 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-08-18 18:31:16,277 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338209013]
[2020-08-18 18:31:16,283 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-08-18 18:31:16,284 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 18:31:16,303 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-08-18 18:31:16,304 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-08-18 18:31:16,307 INFO  L87              Difference]: Start difference. First operand 160 states. Second operand 3 states.
[2020-08-18 18:31:17,370 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 18:31:17,370 INFO  L93              Difference]: Finished difference Result 258 states and 341 transitions.
[2020-08-18 18:31:17,371 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-08-18 18:31:17,373 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 52
[2020-08-18 18:31:17,373 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 18:31:17,387 INFO  L225             Difference]: With dead ends: 258
[2020-08-18 18:31:17,387 INFO  L226             Difference]: Without dead ends: 140
[2020-08-18 18:31:17,391 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-08-18 18:31:17,410 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 140 states.
[2020-08-18 18:31:17,470 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 109.
[2020-08-18 18:31:17,471 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 109 states.
[2020-08-18 18:31:17,473 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 127 transitions.
[2020-08-18 18:31:17,475 INFO  L78                 Accepts]: Start accepts. Automaton has 109 states and 127 transitions. Word has length 52
[2020-08-18 18:31:17,476 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 18:31:17,476 INFO  L479      AbstractCegarLoop]: Abstraction has 109 states and 127 transitions.
[2020-08-18 18:31:17,476 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-08-18 18:31:17,476 INFO  L276                IsEmpty]: Start isEmpty. Operand 109 states and 127 transitions.
[2020-08-18 18:31:17,480 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 54
[2020-08-18 18:31:17,480 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 18:31:17,481 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 18:31:17,481 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-08-18 18:31:17,481 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 18:31:17,482 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 18:31:17,482 INFO  L82        PathProgramCache]: Analyzing trace with hash -110013257, now seen corresponding path program 1 times
[2020-08-18 18:31:17,482 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 18:31:17,482 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284780484]
[2020-08-18 18:31:17,483 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 18:31:17,526 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:17,836 WARN  L193               SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 18:31:17,837 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 18:31:17,862 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:17,881 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 18:31:17,882 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:17,883 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 18:31:17,883 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:17,884 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 18:31:17,885 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:17,886 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 18:31:17,887 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:17,888 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33
[2020-08-18 18:31:17,889 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:17,890 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39
[2020-08-18 18:31:17,891 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:17,892 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2020-08-18 18:31:17,893 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:17,899 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 18:31:17,900 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284780484]
[2020-08-18 18:31:17,900 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 18:31:17,900 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-08-18 18:31:17,901 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736986504]
[2020-08-18 18:31:17,902 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-08-18 18:31:17,903 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 18:31:17,903 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-08-18 18:31:17,903 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-08-18 18:31:17,903 INFO  L87              Difference]: Start difference. First operand 109 states and 127 transitions. Second operand 4 states.
[2020-08-18 18:31:18,322 WARN  L193               SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-18 18:31:19,062 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 18:31:19,063 INFO  L93              Difference]: Finished difference Result 187 states and 228 transitions.
[2020-08-18 18:31:19,064 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-08-18 18:31:19,065 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 53
[2020-08-18 18:31:19,065 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 18:31:19,067 INFO  L225             Difference]: With dead ends: 187
[2020-08-18 18:31:19,068 INFO  L226             Difference]: Without dead ends: 124
[2020-08-18 18:31:19,070 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 18:31:19,071 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 124 states.
[2020-08-18 18:31:19,103 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100.
[2020-08-18 18:31:19,103 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 100 states.
[2020-08-18 18:31:19,104 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions.
[2020-08-18 18:31:19,105 INFO  L78                 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 53
[2020-08-18 18:31:19,105 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 18:31:19,105 INFO  L479      AbstractCegarLoop]: Abstraction has 100 states and 115 transitions.
[2020-08-18 18:31:19,105 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-08-18 18:31:19,105 INFO  L276                IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions.
[2020-08-18 18:31:19,108 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 59
[2020-08-18 18:31:19,108 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 18:31:19,108 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]
[2020-08-18 18:31:19,108 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-08-18 18:31:19,108 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 18:31:19,109 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 18:31:19,109 INFO  L82        PathProgramCache]: Analyzing trace with hash -829955057, now seen corresponding path program 1 times
[2020-08-18 18:31:19,109 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 18:31:19,109 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3248681]
[2020-08-18 18:31:19,110 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 18:31:19,142 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:19,493 WARN  L193               SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 18:31:19,495 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 18:31:19,511 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:19,537 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 18:31:19,538 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:19,540 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 18:31:19,540 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:19,541 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 18:31:19,544 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:19,574 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 18:31:19,575 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:19,577 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2020-08-18 18:31:19,577 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:19,578 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44
[2020-08-18 18:31:19,579 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:19,580 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50
[2020-08-18 18:31:19,581 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:19,590 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 18:31:19,591 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3248681]
[2020-08-18 18:31:19,591 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 18:31:19,591 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-08-18 18:31:19,592 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759201989]
[2020-08-18 18:31:19,592 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-08-18 18:31:19,592 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 18:31:19,593 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-08-18 18:31:19,593 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2020-08-18 18:31:19,593 INFO  L87              Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 8 states.
[2020-08-18 18:31:19,967 WARN  L193               SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-18 18:31:20,300 WARN  L193               SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 18:31:20,562 WARN  L193               SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 18:31:20,871 WARN  L193               SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 18:31:21,920 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 18:31:21,920 INFO  L93              Difference]: Finished difference Result 200 states and 246 transitions.
[2020-08-18 18:31:21,924 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-08-18 18:31:21,924 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 58
[2020-08-18 18:31:21,924 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 18:31:21,926 INFO  L225             Difference]: With dead ends: 200
[2020-08-18 18:31:21,926 INFO  L226             Difference]: Without dead ends: 124
[2020-08-18 18:31:21,928 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-08-18 18:31:21,928 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 124 states.
[2020-08-18 18:31:21,956 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100.
[2020-08-18 18:31:21,956 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 100 states.
[2020-08-18 18:31:21,957 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions.
[2020-08-18 18:31:21,957 INFO  L78                 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 58
[2020-08-18 18:31:21,958 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 18:31:21,958 INFO  L479      AbstractCegarLoop]: Abstraction has 100 states and 114 transitions.
[2020-08-18 18:31:21,958 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-08-18 18:31:21,958 INFO  L276                IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions.
[2020-08-18 18:31:21,960 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 67
[2020-08-18 18:31:21,961 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 18:31:21,961 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]
[2020-08-18 18:31:21,961 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-08-18 18:31:21,961 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 18:31:21,962 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 18:31:21,962 INFO  L82        PathProgramCache]: Analyzing trace with hash -715130014, now seen corresponding path program 1 times
[2020-08-18 18:31:21,962 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 18:31:21,962 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280648802]
[2020-08-18 18:31:21,963 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 18:31:22,003 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:22,336 WARN  L193               SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 18:31:22,338 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 18:31:22,370 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:22,407 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 18:31:22,410 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:22,413 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 18:31:22,413 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:22,415 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 18:31:22,416 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:22,417 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 18:31:22,421 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:22,439 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2020-08-18 18:31:22,440 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:22,442 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 18:31:22,442 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:22,445 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46
[2020-08-18 18:31:22,449 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:22,450 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52
[2020-08-18 18:31:22,456 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:22,476 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58
[2020-08-18 18:31:22,477 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:22,487 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 18:31:22,488 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280648802]
[2020-08-18 18:31:22,489 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 18:31:22,489 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-08-18 18:31:22,489 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970446467]
[2020-08-18 18:31:22,490 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-08-18 18:31:22,490 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 18:31:22,490 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-08-18 18:31:22,491 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2020-08-18 18:31:22,491 INFO  L87              Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 8 states.
[2020-08-18 18:31:22,853 WARN  L193               SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-18 18:31:24,243 WARN  L193               SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 18:31:24,574 WARN  L193               SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 18:31:24,838 WARN  L193               SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 18:31:25,214 WARN  L193               SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-18 18:31:25,471 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 18:31:25,471 INFO  L93              Difference]: Finished difference Result 299 states and 393 transitions.
[2020-08-18 18:31:25,477 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-08-18 18:31:25,477 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 66
[2020-08-18 18:31:25,478 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 18:31:25,481 INFO  L225             Difference]: With dead ends: 299
[2020-08-18 18:31:25,481 INFO  L226             Difference]: Without dead ends: 223
[2020-08-18 18:31:25,483 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182
[2020-08-18 18:31:25,484 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 223 states.
[2020-08-18 18:31:25,560 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 174.
[2020-08-18 18:31:25,561 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 174 states.
[2020-08-18 18:31:25,562 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 205 transitions.
[2020-08-18 18:31:25,563 INFO  L78                 Accepts]: Start accepts. Automaton has 174 states and 205 transitions. Word has length 66
[2020-08-18 18:31:25,563 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 18:31:25,563 INFO  L479      AbstractCegarLoop]: Abstraction has 174 states and 205 transitions.
[2020-08-18 18:31:25,563 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-08-18 18:31:25,564 INFO  L276                IsEmpty]: Start isEmpty. Operand 174 states and 205 transitions.
[2020-08-18 18:31:25,566 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 71
[2020-08-18 18:31:25,566 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 18:31:25,566 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]
[2020-08-18 18:31:25,566 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-08-18 18:31:25,567 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 18:31:25,567 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 18:31:25,567 INFO  L82        PathProgramCache]: Analyzing trace with hash 1329435240, now seen corresponding path program 1 times
[2020-08-18 18:31:25,567 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 18:31:25,568 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066658407]
[2020-08-18 18:31:25,568 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 18:31:25,592 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:25,841 WARN  L193               SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 18:31:25,842 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 18:31:25,853 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:25,867 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 18:31:25,868 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:25,869 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 18:31:25,870 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:25,871 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 18:31:25,872 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:25,873 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 18:31:25,874 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:25,895 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35
[2020-08-18 18:31:25,896 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:25,905 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2020-08-18 18:31:25,906 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:25,907 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 18:31:25,908 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:25,909 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50
[2020-08-18 18:31:25,909 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:25,910 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56
[2020-08-18 18:31:25,911 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:25,912 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62
[2020-08-18 18:31:25,913 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 18:31:25,923 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 18:31:25,923 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066658407]
[2020-08-18 18:31:25,923 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 18:31:25,924 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-08-18 18:31:25,924 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347554887]
[2020-08-18 18:31:25,924 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-08-18 18:31:25,925 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 18:31:25,925 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-08-18 18:31:25,925 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-08-18 18:31:25,925 INFO  L87              Difference]: Start difference. First operand 174 states and 205 transitions. Second operand 6 states.
[2020-08-18 18:31:26,253 WARN  L193               SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-18 18:31:26,855 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 18:31:26,855 INFO  L93              Difference]: Finished difference Result 296 states and 363 transitions.
[2020-08-18 18:31:26,856 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-08-18 18:31:26,857 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 70
[2020-08-18 18:31:26,857 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 18:31:26,859 INFO  L225             Difference]: With dead ends: 296
[2020-08-18 18:31:26,859 INFO  L226             Difference]: Without dead ends: 146
[2020-08-18 18:31:26,861 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 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 18:31:26,862 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 146 states.
[2020-08-18 18:31:26,892 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 133.
[2020-08-18 18:31:26,892 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 133 states.
[2020-08-18 18:31:26,893 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 148 transitions.
[2020-08-18 18:31:26,893 INFO  L78                 Accepts]: Start accepts. Automaton has 133 states and 148 transitions. Word has length 70
[2020-08-18 18:31:26,894 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 18:31:26,894 INFO  L479      AbstractCegarLoop]: Abstraction has 133 states and 148 transitions.
[2020-08-18 18:31:26,894 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-08-18 18:31:26,894 INFO  L276                IsEmpty]: Start isEmpty. Operand 133 states and 148 transitions.
[2020-08-18 18:31:26,895 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 71
[2020-08-18 18:31:26,896 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 18:31:26,896 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]
[2020-08-18 18:31:26,896 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-08-18 18:31:26,896 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 18:31:26,897 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 18:31:26,897 INFO  L82        PathProgramCache]: Analyzing trace with hash 1182747068, now seen corresponding path program 1 times
[2020-08-18 18:31:26,897 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 18:31:26,897 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907728581]
[2020-08-18 18:31:26,897 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 18:31:26,950 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-08-18 18:31:26,953 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-08-18 18:31:26,953 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-08-18 18:31:26,957 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-08-18 18:31:26,980 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 06:31:26 BoogieIcfgContainer
[2020-08-18 18:31:26,981 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-08-18 18:31:26,982 INFO  L168              Benchmark]: Toolchain (without parser) took 13659.85 ms. Allocated memory was 147.3 MB in the beginning and 442.0 MB in the end (delta: 294.6 MB). Free memory was 102.5 MB in the beginning and 373.2 MB in the end (delta: -270.6 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB.
[2020-08-18 18:31:26,983 INFO  L168              Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-08-18 18:31:26,984 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 637.95 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 102.3 MB in the beginning and 172.2 MB in the end (delta: -69.9 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB.
[2020-08-18 18:31:26,985 INFO  L168              Benchmark]: Boogie Preprocessor took 124.17 ms. Allocated memory is still 204.5 MB. Free memory was 172.2 MB in the beginning and 168.1 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB.
[2020-08-18 18:31:26,986 INFO  L168              Benchmark]: RCFGBuilder took 1248.77 ms. Allocated memory was 204.5 MB in the beginning and 237.0 MB in the end (delta: 32.5 MB). Free memory was 168.1 MB in the beginning and 199.1 MB in the end (delta: -31.0 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB.
[2020-08-18 18:31:26,987 INFO  L168              Benchmark]: TraceAbstraction took 11644.51 ms. Allocated memory was 237.0 MB in the beginning and 442.0 MB in the end (delta: 205.0 MB). Free memory was 199.1 MB in the beginning and 373.2 MB in the end (delta: -174.1 MB). Peak memory consumption was 30.9 MB. Max. memory is 7.1 GB.
[2020-08-18 18:31:26,990 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.25 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 637.95 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 102.3 MB in the beginning and 172.2 MB in the end (delta: -69.9 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 124.17 ms. Allocated memory is still 204.5 MB. Free memory was 172.2 MB in the beginning and 168.1 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 1248.77 ms. Allocated memory was 204.5 MB in the beginning and 237.0 MB in the end (delta: 32.5 MB). Free memory was 168.1 MB in the beginning and 199.1 MB in the end (delta: -31.0 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 11644.51 ms. Allocated memory was 237.0 MB in the beginning and 442.0 MB in the end (delta: 205.0 MB). Free memory was 199.1 MB in the beginning and 373.2 MB in the end (delta: -174.1 MB). Peak memory consumption was 30.9 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L131]              int pumpRunning  =    0;
[L132]              int systemActive  =    1;
[L458]              static struct __ACC__ERR *head  =    (struct __ACC__ERR *)0;
[L725]              int cleanupTimeShifts  =    4;
[L821]              int waterLevel  =    1;
[L822]              int methaneLevelCritical  =    0;
[L798]              int retValue_acc ;
[L799]              int tmp ;
[L803]  FCALL       select_helpers()
[L804]  FCALL       select_features()
[L805]  CALL, EXPR  valid_product()
[L78]               int retValue_acc ;
[L81]               retValue_acc = 1
[L82]               return (retValue_acc);
[L805]  RET, EXPR   valid_product()
[L805]              tmp = valid_product()
[L807]  COND TRUE   \read(tmp)
[L809]  FCALL       setup()
[L810]  CALL        runTest()
[L792]  CALL        test()
[L659]              int splverifierCounter ;
[L660]              int tmp ;
[L661]              int tmp___0 ;
[L662]              int tmp___1 ;
[L663]              int tmp___2 ;
[L666]              splverifierCounter = 0
[L668]  COND TRUE   1
[L670]  COND TRUE   splverifierCounter < 4
[L676]              tmp = __VERIFIER_nondet_int()
[L678]  COND TRUE   \read(tmp)
[L680]  CALL        waterRise()
[L839]  COND TRUE   waterLevel < 2
[L840]              waterLevel = waterLevel + 1
[L680]  RET         waterRise()
[L686]              tmp___0 = __VERIFIER_nondet_int()
[L688]  COND FALSE  !(\read(tmp___0))
[L696]              tmp___2 = __VERIFIER_nondet_int()
[L698]  COND FALSE  !(\read(tmp___2))
[L704]              tmp___1 = __VERIFIER_nondet_int()
[L706]  COND TRUE   \read(tmp___1)
[L713]  CALL        timeShift()
[L138]  COND FALSE  !(\read(pumpRunning))
[L145]  COND TRUE   \read(systemActive)
[L147]  CALL        processEnvironment()
[L167]              int tmp ;
[L170]  COND FALSE  !(\read(pumpRunning))
[L185]  FCALL       processEnvironment__wrappee__methaneQuery()
[L147]  RET         processEnvironment()
[L153]  CALL        __utac_acc__Specification3_spec__1()
[L91]               int tmp ;
[L92]               int tmp___0 ;
[L93]               int tmp___1 ;
[L97]   CALL, EXPR  isMethaneLevelCritical()
[L860]              int retValue_acc ;
[L863]              retValue_acc = methaneLevelCritical
[L864]              return (retValue_acc);
[L97]   RET, EXPR   isMethaneLevelCritical()
[L97]               tmp = isMethaneLevelCritical()
[L99]   COND FALSE  !(\read(tmp))
[L103]  CALL, EXPR  getWaterLevel()
[L892]              int retValue_acc ;
[L895]              retValue_acc = waterLevel
[L896]              return (retValue_acc);
[L103]  RET, EXPR   getWaterLevel()
[L103]              tmp___0 = getWaterLevel()
[L105]  COND TRUE   tmp___0 == 2
[L107]  CALL, EXPR  isPumpRunning()
[L236]              int retValue_acc ;
[L239]              retValue_acc = pumpRunning
[L240]              return (retValue_acc);
[L107]  RET, EXPR   isPumpRunning()
[L107]              tmp___1 = isPumpRunning()
[L109]  COND FALSE  !(\read(tmp___1))
[L113]  CALL        __automaton_fail()
[L44]               __VERIFIER_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 37 procedures, 218 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 8.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 447 SDtfs, 739 SDslu, 238 SDs, 0 SdLazy, 1311 SolverSat, 526 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=174occurred 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, 141 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 369 NumberOfCodeBlocks, 369 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 294 ConstructedInterpolants, 0 QuantifiedInterpolants, 83938 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...