/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=HIGHLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product29.cil.c


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


This is Ultimate 0.1.25-5644d1e-m
[2020-08-18 19:19:51,483 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-08-18 19:19:51,486 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-08-18 19:19:51,524 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-08-18 19:19:51,525 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-08-18 19:19:51,534 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-08-18 19:19:51,536 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-08-18 19:19:51,539 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-08-18 19:19:51,541 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-08-18 19:19:51,543 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-08-18 19:19:51,544 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-08-18 19:19:51,547 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-08-18 19:19:51,547 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-08-18 19:19:51,552 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-08-18 19:19:51,555 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-08-18 19:19:51,556 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-08-18 19:19:51,558 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-08-18 19:19:51,560 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-08-18 19:19:51,562 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-08-18 19:19:51,569 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-08-18 19:19:51,571 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-08-18 19:19:51,572 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-08-18 19:19:51,573 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-08-18 19:19:51,574 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-08-18 19:19:51,578 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-08-18 19:19:51,578 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-08-18 19:19:51,578 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-08-18 19:19:51,579 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-08-18 19:19:51,580 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-08-18 19:19:51,584 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-08-18 19:19:51,584 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-08-18 19:19:51,588 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-08-18 19:19:51,589 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-08-18 19:19:51,589 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-08-18 19:19:51,592 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-08-18 19:19:51,593 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-08-18 19:19:51,593 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-08-18 19:19:51,593 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-08-18 19:19:51,593 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-08-18 19:19:51,594 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-08-18 19:19:51,595 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-08-18 19:19:51,596 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 19:19:51,618 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-08-18 19:19:51,618 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-08-18 19:19:51,624 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-08-18 19:19:51,625 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-08-18 19:19:51,625 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-08-18 19:19:51,625 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-08-18 19:19:51,625 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-08-18 19:19:51,625 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-08-18 19:19:51,626 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-08-18 19:19:51,626 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-08-18 19:19:51,626 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-08-18 19:19:51,626 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-08-18 19:19:51,626 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-08-18 19:19:51,626 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-08-18 19:19:51,627 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-08-18 19:19:51,627 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-08-18 19:19:51,627 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-08-18 19:19:51,627 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-08-18 19:19:51,628 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-08-18 19:19:51,628 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-08-18 19:19:51,628 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-08-18 19:19:51,628 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-18 19:19:51,628 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-08-18 19:19:51,629 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-08-18 19:19:51,629 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-08-18 19:19:51,629 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-08-18 19:19:51,629 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-08-18 19:19:51,629 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-08-18 19:19:51,629 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-08-18 19:19:51,630 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=HIGHLEXORDER;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER;
[2020-08-18 19:19:51,915 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-08-18 19:19:51,927 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-08-18 19:19:51,930 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-08-18 19:19:51,932 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-08-18 19:19:51,932 INFO  L275        PluginConnector]: CDTParser initialized
[2020-08-18 19:19:51,933 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product29.cil.c
[2020-08-18 19:19:51,995 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/afe6214d2/31bf4946a0ba49ae8a02ecbff90ffe6b/FLAGb1bd154ee
[2020-08-18 19:19:52,511 INFO  L306              CDTParser]: Found 1 translation units.
[2020-08-18 19:19:52,512 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product29.cil.c
[2020-08-18 19:19:52,525 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/afe6214d2/31bf4946a0ba49ae8a02ecbff90ffe6b/FLAGb1bd154ee
[2020-08-18 19:19:52,850 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/afe6214d2/31bf4946a0ba49ae8a02ecbff90ffe6b
[2020-08-18 19:19:52,858 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-08-18 19:19:52,860 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-08-18 19:19:52,861 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-08-18 19:19:52,861 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-08-18 19:19:52,865 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-08-18 19:19:52,866 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:19:52" (1/1) ...
[2020-08-18 19:19:52,869 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20abf48c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:19:52, skipping insertion in model container
[2020-08-18 19:19:52,870 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:19:52" (1/1) ...
[2020-08-18 19:19:52,877 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-08-18 19:19:52,928 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-08-18 19:19:53,342 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-18 19:19:53,363 INFO  L203         MainTranslator]: Completed pre-run
[2020-08-18 19:19:53,445 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-18 19:19:53,482 INFO  L208         MainTranslator]: Completed translation
[2020-08-18 19:19:53,483 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:19:53 WrapperNode
[2020-08-18 19:19:53,483 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-08-18 19:19:53,484 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-08-18 19:19:53,484 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-08-18 19:19:53,484 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-08-18 19:19:53,495 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:19:53" (1/1) ...
[2020-08-18 19:19:53,496 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:19:53" (1/1) ...
[2020-08-18 19:19:53,514 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:19:53" (1/1) ...
[2020-08-18 19:19:53,514 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:19:53" (1/1) ...
[2020-08-18 19:19:53,561 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:19:53" (1/1) ...
[2020-08-18 19:19:53,582 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:19:53" (1/1) ...
[2020-08-18 19:19:53,588 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:19:53" (1/1) ...
[2020-08-18 19:19:53,606 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-08-18 19:19:53,606 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-08-18 19:19:53,606 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-08-18 19:19:53,607 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-08-18 19:19:53,608 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:19:53" (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 19:19:53,685 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-08-18 19:19:53,685 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-08-18 19:19:53,685 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-08-18 19:19:53,685 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1
[2020-08-18 19:19:53,685 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-08-18 19:19:53,686 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-08-18 19:19:53,686 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-08-18 19:19:53,686 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-08-18 19:19:53,686 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-08-18 19:19:53,686 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-08-18 19:19:53,686 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry
[2020-08-18 19:19:53,687 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-08-18 19:19:53,687 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-08-18 19:19:53,687 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-08-18 19:19:53,687 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-08-18 19:19:53,687 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-08-18 19:19:53,687 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-08-18 19:19:53,688 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-08-18 19:19:53,688 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-08-18 19:19:53,688 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-08-18 19:19:53,688 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-08-18 19:19:53,688 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-08-18 19:19:53,688 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-08-18 19:19:53,689 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-08-18 19:19:53,689 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-08-18 19:19:53,689 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-08-18 19:19:53,689 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-08-18 19:19:53,689 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-08-18 19:19:53,689 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base
[2020-08-18 19:19:53,690 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery
[2020-08-18 19:19:53,690 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-08-18 19:19:53,690 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor
[2020-08-18 19:19:53,690 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-08-18 19:19:53,690 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-08-18 19:19:53,690 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-08-18 19:19:53,690 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-08-18 19:19:53,691 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-08-18 19:19:53,691 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterLevel
[2020-08-18 19:19:53,691 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-08-18 19:19:53,691 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-08-18 19:19:53,691 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-08-18 19:19:53,691 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-08-18 19:19:53,691 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-08-18 19:19:53,692 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-08-18 19:19:53,692 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-08-18 19:19:53,692 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-08-18 19:19:53,692 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1
[2020-08-18 19:19:53,692 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-08-18 19:19:53,692 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-08-18 19:19:53,693 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-08-18 19:19:53,693 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-08-18 19:19:53,693 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry
[2020-08-18 19:19:53,693 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-08-18 19:19:53,693 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-08-18 19:19:53,693 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-08-18 19:19:53,694 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-08-18 19:19:53,694 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-08-18 19:19:53,694 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-08-18 19:19:53,694 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-08-18 19:19:53,694 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-08-18 19:19:53,694 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-08-18 19:19:53,694 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-08-18 19:19:53,695 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-08-18 19:19:53,695 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-08-18 19:19:53,695 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-08-18 19:19:53,695 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-08-18 19:19:53,695 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-08-18 19:19:53,695 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-08-18 19:19:53,695 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-08-18 19:19:53,696 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-08-18 19:19:53,696 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-08-18 19:19:53,696 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-08-18 19:19:53,696 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-08-18 19:19:53,696 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-08-18 19:19:53,696 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-08-18 19:19:53,697 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-08-18 19:19:53,697 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-08-18 19:19:53,697 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-08-18 19:19:53,697 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-08-18 19:19:53,697 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-08-18 19:19:53,697 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-08-18 19:19:53,697 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-08-18 19:19:53,698 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-08-18 19:19:53,698 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-08-18 19:19:53,698 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base
[2020-08-18 19:19:53,698 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterLevel
[2020-08-18 19:19:53,698 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery
[2020-08-18 19:19:53,698 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-08-18 19:19:53,698 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor
[2020-08-18 19:19:53,699 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-08-18 19:19:53,699 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-08-18 19:19:53,699 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-08-18 19:19:54,845 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-08-18 19:19:54,846 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-08-18 19:19:54,857 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:19:54 BoogieIcfgContainer
[2020-08-18 19:19:54,857 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-08-18 19:19:54,861 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-08-18 19:19:54,861 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-08-18 19:19:54,864 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-08-18 19:19:54,865 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 07:19:52" (1/3) ...
[2020-08-18 19:19:54,866 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77269db3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:19:54, skipping insertion in model container
[2020-08-18 19:19:54,866 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:19:53" (2/3) ...
[2020-08-18 19:19:54,867 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77269db3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:19:54, skipping insertion in model container
[2020-08-18 19:19:54,867 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:19:54" (3/3) ...
[2020-08-18 19:19:54,869 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec3_product29.cil.c
[2020-08-18 19:19:54,880 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-08-18 19:19:54,891 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-08-18 19:19:54,905 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-08-18 19:19:54,939 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-08-18 19:19:54,940 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-08-18 19:19:54,940 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-08-18 19:19:54,940 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-08-18 19:19:54,940 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-08-18 19:19:54,940 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-08-18 19:19:54,941 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-08-18 19:19:54,941 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-08-18 19:19:54,961 INFO  L276                IsEmpty]: Start isEmpty. Operand 176 states.
[2020-08-18 19:19:54,972 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2020-08-18 19:19:54,973 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 19:19:54,974 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 19:19:54,974 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 19:19:54,980 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 19:19:54,981 INFO  L82        PathProgramCache]: Analyzing trace with hash -720125183, now seen corresponding path program 1 times
[2020-08-18 19:19:54,988 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 19:19:54,988 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466614971]
[2020-08-18 19:19:54,988 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 19:19:55,249 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:55,617 WARN  L193               SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 19:19:55,619 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 19:19:55,630 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:55,672 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 19:19:55,673 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:55,675 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 19:19:55,676 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:55,677 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 19:19:55,678 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:55,680 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 19:19:55,681 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:55,683 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32
[2020-08-18 19:19:55,684 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:55,686 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2020-08-18 19:19:55,687 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:55,689 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44
[2020-08-18 19:19:55,690 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:55,711 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 19:19:55,712 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466614971]
[2020-08-18 19:19:55,714 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 19:19:55,717 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-08-18 19:19:55,719 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666323451]
[2020-08-18 19:19:55,725 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-08-18 19:19:55,725 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 19:19:55,741 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-08-18 19:19:55,741 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-08-18 19:19:55,744 INFO  L87              Difference]: Start difference. First operand 176 states. Second operand 3 states.
[2020-08-18 19:19:56,884 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 19:19:56,884 INFO  L93              Difference]: Finished difference Result 291 states and 384 transitions.
[2020-08-18 19:19:56,886 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-08-18 19:19:56,888 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 52
[2020-08-18 19:19:56,888 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 19:19:56,902 INFO  L225             Difference]: With dead ends: 291
[2020-08-18 19:19:56,903 INFO  L226             Difference]: Without dead ends: 157
[2020-08-18 19:19:56,908 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 19:19:56,926 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 157 states.
[2020-08-18 19:19:56,993 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 125.
[2020-08-18 19:19:56,995 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 125 states.
[2020-08-18 19:19:56,997 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 148 transitions.
[2020-08-18 19:19:56,999 INFO  L78                 Accepts]: Start accepts. Automaton has 125 states and 148 transitions. Word has length 52
[2020-08-18 19:19:57,000 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 19:19:57,000 INFO  L479      AbstractCegarLoop]: Abstraction has 125 states and 148 transitions.
[2020-08-18 19:19:57,000 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-08-18 19:19:57,000 INFO  L276                IsEmpty]: Start isEmpty. Operand 125 states and 148 transitions.
[2020-08-18 19:19:57,004 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 54
[2020-08-18 19:19:57,005 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 19:19:57,005 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 19:19:57,005 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-08-18 19:19:57,005 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 19:19:57,006 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 19:19:57,006 INFO  L82        PathProgramCache]: Analyzing trace with hash -1479231386, now seen corresponding path program 1 times
[2020-08-18 19:19:57,006 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 19:19:57,006 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147564045]
[2020-08-18 19:19:57,007 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 19:19:57,073 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:57,388 WARN  L193               SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 19:19:57,389 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 19:19:57,403 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:57,436 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 19:19:57,437 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:57,441 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 19:19:57,441 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:57,444 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 19:19:57,445 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:57,446 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 19:19:57,448 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:57,450 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33
[2020-08-18 19:19:57,451 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:57,452 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39
[2020-08-18 19:19:57,452 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:57,453 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2020-08-18 19:19:57,455 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:57,464 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 19:19:57,464 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147564045]
[2020-08-18 19:19:57,465 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 19:19:57,465 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-08-18 19:19:57,465 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958437356]
[2020-08-18 19:19:57,468 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-08-18 19:19:57,468 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 19:19:57,469 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-08-18 19:19:57,469 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-08-18 19:19:57,469 INFO  L87              Difference]: Start difference. First operand 125 states and 148 transitions. Second operand 4 states.
[2020-08-18 19:19:57,885 WARN  L193               SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-18 19:19:58,640 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 19:19:58,640 INFO  L93              Difference]: Finished difference Result 224 states and 275 transitions.
[2020-08-18 19:19:58,641 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-08-18 19:19:58,641 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 53
[2020-08-18 19:19:58,641 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 19:19:58,646 INFO  L225             Difference]: With dead ends: 224
[2020-08-18 19:19:58,647 INFO  L226             Difference]: Without dead ends: 141
[2020-08-18 19:19:58,648 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 19:19:58,649 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 141 states.
[2020-08-18 19:19:58,684 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 116.
[2020-08-18 19:19:58,685 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 116 states.
[2020-08-18 19:19:58,686 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 136 transitions.
[2020-08-18 19:19:58,686 INFO  L78                 Accepts]: Start accepts. Automaton has 116 states and 136 transitions. Word has length 53
[2020-08-18 19:19:58,687 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 19:19:58,687 INFO  L479      AbstractCegarLoop]: Abstraction has 116 states and 136 transitions.
[2020-08-18 19:19:58,687 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-08-18 19:19:58,687 INFO  L276                IsEmpty]: Start isEmpty. Operand 116 states and 136 transitions.
[2020-08-18 19:19:58,689 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 58
[2020-08-18 19:19:58,689 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 19:19:58,690 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 19:19:58,690 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-08-18 19:19:58,690 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 19:19:58,690 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 19:19:58,690 INFO  L82        PathProgramCache]: Analyzing trace with hash -162444823, now seen corresponding path program 1 times
[2020-08-18 19:19:58,691 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 19:19:58,691 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105938890]
[2020-08-18 19:19:58,691 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 19:19:58,725 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:59,005 WARN  L193               SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 19:19:59,006 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 19:19:59,019 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:59,045 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 19:19:59,047 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:59,048 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 19:19:59,049 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:59,050 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 19:19:59,051 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:59,068 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 19:19:59,069 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:59,070 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 19:19:59,071 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:59,072 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43
[2020-08-18 19:19:59,073 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:59,074 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49
[2020-08-18 19:19:59,075 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:59,084 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 19:19:59,084 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105938890]
[2020-08-18 19:19:59,084 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 19:19:59,085 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-08-18 19:19:59,085 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665881484]
[2020-08-18 19:19:59,085 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-08-18 19:19:59,086 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 19:19:59,086 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-08-18 19:19:59,086 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2020-08-18 19:19:59,086 INFO  L87              Difference]: Start difference. First operand 116 states and 136 transitions. Second operand 8 states.
[2020-08-18 19:19:59,451 WARN  L193               SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-18 19:19:59,751 WARN  L193               SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 19:20:00,018 WARN  L193               SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 19:20:00,239 WARN  L193               SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 19:20:01,330 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 19:20:01,331 INFO  L93              Difference]: Finished difference Result 233 states and 289 transitions.
[2020-08-18 19:20:01,332 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-08-18 19:20:01,332 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 57
[2020-08-18 19:20:01,333 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 19:20:01,335 INFO  L225             Difference]: With dead ends: 233
[2020-08-18 19:20:01,335 INFO  L226             Difference]: Without dead ends: 141
[2020-08-18 19:20:01,337 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 19:20:01,337 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 141 states.
[2020-08-18 19:20:01,380 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 116.
[2020-08-18 19:20:01,381 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 116 states.
[2020-08-18 19:20:01,382 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 135 transitions.
[2020-08-18 19:20:01,382 INFO  L78                 Accepts]: Start accepts. Automaton has 116 states and 135 transitions. Word has length 57
[2020-08-18 19:20:01,383 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 19:20:01,383 INFO  L479      AbstractCegarLoop]: Abstraction has 116 states and 135 transitions.
[2020-08-18 19:20:01,383 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-08-18 19:20:01,383 INFO  L276                IsEmpty]: Start isEmpty. Operand 116 states and 135 transitions.
[2020-08-18 19:20:01,385 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 71
[2020-08-18 19:20:01,386 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 19:20:01,386 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 19:20:01,386 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-08-18 19:20:01,386 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 19:20:01,387 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 19:20:01,387 INFO  L82        PathProgramCache]: Analyzing trace with hash -524642989, now seen corresponding path program 1 times
[2020-08-18 19:20:01,387 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 19:20:01,387 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615370058]
[2020-08-18 19:20:01,387 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 19:20:01,418 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:20:01,698 WARN  L193               SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 19:20:01,701 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 19:20:01,715 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:20:01,731 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 19:20:01,732 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:20:01,734 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 19:20:01,734 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:20:01,735 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 19:20:01,736 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:20:01,738 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 19:20:01,738 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:20:01,765 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35
[2020-08-18 19:20:01,767 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:20:01,770 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 19:20:01,771 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:20:01,772 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 19:20:01,772 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:20:01,773 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50
[2020-08-18 19:20:01,776 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:20:01,778 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56
[2020-08-18 19:20:01,779 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:20:01,792 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62
[2020-08-18 19:20:01,793 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:20:01,802 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 19:20:01,803 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615370058]
[2020-08-18 19:20:01,804 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 19:20:01,804 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-08-18 19:20:01,804 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577487149]
[2020-08-18 19:20:01,805 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-08-18 19:20:01,805 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 19:20:01,805 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-08-18 19:20:01,806 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2020-08-18 19:20:01,806 INFO  L87              Difference]: Start difference. First operand 116 states and 135 transitions. Second operand 8 states.
[2020-08-18 19:20:02,225 WARN  L193               SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-18 19:20:03,927 WARN  L193               SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 19:20:04,210 WARN  L193               SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 19:20:04,491 WARN  L193               SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 19:20:04,860 WARN  L193               SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-18 19:20:05,318 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 19:20:05,318 INFO  L93              Difference]: Finished difference Result 348 states and 456 transitions.
[2020-08-18 19:20:05,319 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-08-18 19:20:05,319 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 70
[2020-08-18 19:20:05,320 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 19:20:05,323 INFO  L225             Difference]: With dead ends: 348
[2020-08-18 19:20:05,324 INFO  L226             Difference]: Without dead ends: 256
[2020-08-18 19:20:05,326 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 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 19:20:05,326 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 256 states.
[2020-08-18 19:20:05,398 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 208.
[2020-08-18 19:20:05,399 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 208 states.
[2020-08-18 19:20:05,400 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 250 transitions.
[2020-08-18 19:20:05,401 INFO  L78                 Accepts]: Start accepts. Automaton has 208 states and 250 transitions. Word has length 70
[2020-08-18 19:20:05,401 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 19:20:05,401 INFO  L479      AbstractCegarLoop]: Abstraction has 208 states and 250 transitions.
[2020-08-18 19:20:05,401 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-08-18 19:20:05,401 INFO  L276                IsEmpty]: Start isEmpty. Operand 208 states and 250 transitions.
[2020-08-18 19:20:05,405 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 75
[2020-08-18 19:20:05,405 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 19:20:05,405 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 19:20:05,405 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-08-18 19:20:05,406 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 19:20:05,406 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 19:20:05,406 INFO  L82        PathProgramCache]: Analyzing trace with hash 691700877, now seen corresponding path program 1 times
[2020-08-18 19:20:05,406 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 19:20:05,406 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30715514]
[2020-08-18 19:20:05,407 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 19:20:05,430 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:20:05,680 WARN  L193               SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 19:20:05,681 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 19:20:05,697 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:20:05,719 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 19:20:05,720 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:20:05,721 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 19:20:05,722 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:20:05,725 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 19:20:05,726 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:20:05,728 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 19:20:05,729 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:20:05,736 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34
[2020-08-18 19:20:05,737 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:20:05,745 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39
[2020-08-18 19:20:05,746 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:20:05,748 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 19:20:05,749 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:20:05,750 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 19:20:05,750 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:20:05,751 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54
[2020-08-18 19:20:05,752 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:20:05,753 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60
[2020-08-18 19:20:05,754 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:20:05,754 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66
[2020-08-18 19:20:05,755 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:20:05,764 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 19:20:05,764 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30715514]
[2020-08-18 19:20:05,765 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 19:20:05,765 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-08-18 19:20:05,765 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15112435]
[2020-08-18 19:20:05,766 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-08-18 19:20:05,766 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 19:20:05,766 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-08-18 19:20:05,766 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-08-18 19:20:05,767 INFO  L87              Difference]: Start difference. First operand 208 states and 250 transitions. Second operand 6 states.
[2020-08-18 19:20:06,099 WARN  L193               SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-18 19:20:06,664 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 19:20:06,664 INFO  L93              Difference]: Finished difference Result 331 states and 413 transitions.
[2020-08-18 19:20:06,665 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-08-18 19:20:06,665 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 74
[2020-08-18 19:20:06,666 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 19:20:06,668 INFO  L225             Difference]: With dead ends: 331
[2020-08-18 19:20:06,668 INFO  L226             Difference]: Without dead ends: 147
[2020-08-18 19:20:06,670 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 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 19:20:06,671 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 147 states.
[2020-08-18 19:20:06,700 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 135.
[2020-08-18 19:20:06,700 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 135 states.
[2020-08-18 19:20:06,701 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 150 transitions.
[2020-08-18 19:20:06,701 INFO  L78                 Accepts]: Start accepts. Automaton has 135 states and 150 transitions. Word has length 74
[2020-08-18 19:20:06,702 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 19:20:06,702 INFO  L479      AbstractCegarLoop]: Abstraction has 135 states and 150 transitions.
[2020-08-18 19:20:06,702 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-08-18 19:20:06,702 INFO  L276                IsEmpty]: Start isEmpty. Operand 135 states and 150 transitions.
[2020-08-18 19:20:06,704 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 75
[2020-08-18 19:20:06,704 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 19:20:06,704 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 19:20:06,705 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-08-18 19:20:06,705 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 19:20:06,705 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 19:20:06,705 INFO  L82        PathProgramCache]: Analyzing trace with hash 35008173, now seen corresponding path program 1 times
[2020-08-18 19:20:06,705 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 19:20:06,706 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152972738]
[2020-08-18 19:20:06,706 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 19:20:06,782 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-08-18 19:20:06,785 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-08-18 19:20:06,785 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-08-18 19:20:06,789 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-08-18 19:20:06,811 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 07:20:06 BoogieIcfgContainer
[2020-08-18 19:20:06,811 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-08-18 19:20:06,813 INFO  L168              Benchmark]: Toolchain (without parser) took 13953.14 ms. Allocated memory was 139.5 MB in the beginning and 497.0 MB in the end (delta: 357.6 MB). Free memory was 101.6 MB in the beginning and 457.0 MB in the end (delta: -355.5 MB). Peak memory consumption was 315.5 MB. Max. memory is 7.1 GB.
[2020-08-18 19:20:06,814 INFO  L168              Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-08-18 19:20:06,815 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 622.44 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 101.4 MB in the beginning and 170.0 MB in the end (delta: -68.6 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB.
[2020-08-18 19:20:06,816 INFO  L168              Benchmark]: Boogie Preprocessor took 122.18 ms. Allocated memory is still 202.9 MB. Free memory was 170.0 MB in the beginning and 165.9 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB.
[2020-08-18 19:20:06,816 INFO  L168              Benchmark]: RCFGBuilder took 1251.18 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 165.9 MB in the beginning and 194.9 MB in the end (delta: -29.0 MB). Peak memory consumption was 83.1 MB. Max. memory is 7.1 GB.
[2020-08-18 19:20:06,817 INFO  L168              Benchmark]: TraceAbstraction took 11950.68 ms. Allocated memory was 235.9 MB in the beginning and 497.0 MB in the end (delta: 261.1 MB). Free memory was 194.9 MB in the beginning and 457.0 MB in the end (delta: -262.1 MB). Peak memory consumption was 312.3 MB. Max. memory is 7.1 GB.
[2020-08-18 19:20:06,821 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 622.44 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 101.4 MB in the beginning and 170.0 MB in the end (delta: -68.6 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 122.18 ms. Allocated memory is still 202.9 MB. Free memory was 170.0 MB in the beginning and 165.9 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 1251.18 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 165.9 MB in the beginning and 194.9 MB in the end (delta: -29.0 MB). Peak memory consumption was 83.1 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 11950.68 ms. Allocated memory was 235.9 MB in the beginning and 497.0 MB in the end (delta: 261.1 MB). Free memory was 194.9 MB in the beginning and 457.0 MB in the end (delta: -262.1 MB). Peak memory consumption was 312.3 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 580]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L83]               int waterLevel  =    1;
[L84]               int methaneLevelCritical  =    0;
[L341]              static struct __ACC__ERR *head  =    (struct __ACC__ERR *)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()
[L567]              int retValue_acc ;
[L570]              retValue_acc = 1
[L571]              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()
[L882]              int splverifierCounter ;
[L883]              int tmp ;
[L884]              int tmp___0 ;
[L885]              int tmp___1 ;
[L886]              int tmp___2 ;
[L889]              splverifierCounter = 0
[L891]  COND TRUE   1
[L893]  COND TRUE   splverifierCounter < 4
[L899]              tmp = __VERIFIER_nondet_int()
[L901]  COND TRUE   \read(tmp)
[L903]  CALL        waterRise()
[L101]  COND TRUE   waterLevel < 2
[L102]              waterLevel = waterLevel + 1
[L903]  RET         waterRise()
[L909]              tmp___0 = __VERIFIER_nondet_int()
[L911]  COND FALSE  !(\read(tmp___0))
[L919]              tmp___2 = __VERIFIER_nondet_int()
[L921]  COND TRUE   \read(tmp___2)
[L934]  CALL        timeShift()
[L693]  COND FALSE  !(\read(pumpRunning))
[L700]  COND TRUE   \read(systemActive)
[L702]  CALL        processEnvironment()
[L748]              int tmp ;
[L751]  COND FALSE  !(\read(pumpRunning))
[L766]  CALL        processEnvironment__wrappee__methaneQuery()
[L722]              int tmp ;
[L725]  COND FALSE  !(\read(pumpRunning))
[L740]  FCALL       processEnvironment__wrappee__base()
[L766]  RET         processEnvironment__wrappee__methaneQuery()
[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()
[L122]              int retValue_acc ;
[L125]              retValue_acc = methaneLevelCritical
[L126]              return (retValue_acc);
[L51]   RET, EXPR   isMethaneLevelCritical()
[L51]               tmp = isMethaneLevelCritical()
[L53]   COND FALSE  !(\read(tmp))
[L57]   CALL, EXPR  getWaterLevel()
[L154]              int retValue_acc ;
[L157]              retValue_acc = waterLevel
[L158]              return (retValue_acc);
[L57]   RET, EXPR   getWaterLevel()
[L57]               tmp___0 = getWaterLevel()
[L59]   COND TRUE   tmp___0 == 2
[L61]   CALL, EXPR  isPumpRunning()
[L817]              int retValue_acc ;
[L820]              retValue_acc = pumpRunning
[L821]              return (retValue_acc);
[L61]   RET, EXPR   isPumpRunning()
[L61]               tmp___1 = isPumpRunning()
[L63]   COND FALSE  !(\read(tmp___1))
[L67]   CALL        __automaton_fail()
[L580]              __VERIFIER_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 39 procedures, 234 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 9.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 503 SDtfs, 782 SDslu, 255 SDs, 0 SdLazy, 1530 SolverSat, 486 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=208occurred 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, 142 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 380 NumberOfCodeBlocks, 380 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 301 ConstructedInterpolants, 0 QuantifiedInterpolants, 86476 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...