/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product39.cil.c


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


This is Ultimate 0.1.25-d623d84
[2020-07-21 10:37:43,674 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-07-21 10:37:43,677 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-07-21 10:37:43,689 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-07-21 10:37:43,689 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-07-21 10:37:43,690 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-07-21 10:37:43,691 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-07-21 10:37:43,693 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-07-21 10:37:43,695 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-07-21 10:37:43,696 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-07-21 10:37:43,697 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-07-21 10:37:43,698 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-07-21 10:37:43,698 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-07-21 10:37:43,699 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-07-21 10:37:43,700 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-07-21 10:37:43,702 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-07-21 10:37:43,702 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-07-21 10:37:43,703 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-07-21 10:37:43,705 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-07-21 10:37:43,707 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-07-21 10:37:43,709 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-07-21 10:37:43,710 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-07-21 10:37:43,712 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-07-21 10:37:43,712 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-07-21 10:37:43,715 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-07-21 10:37:43,716 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-07-21 10:37:43,716 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-07-21 10:37:43,717 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-07-21 10:37:43,717 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-07-21 10:37:43,718 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-07-21 10:37:43,719 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-07-21 10:37:43,720 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-07-21 10:37:43,720 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-07-21 10:37:43,721 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-07-21 10:37:43,722 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-07-21 10:37:43,723 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-07-21 10:37:43,723 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
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[2020-07-21 10:37:43,724 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-07-21 10:37:43,725 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-07-21 10:37:43,725 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-07-21 10:37:43,726 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-07-21 10:37:43,741 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-07-21 10:37:43,742 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-21 10:37:43,743 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-07-21 10:37:43,743 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-07-21 10:37:43,743 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-07-21 10:37:43,744 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-21 10:37:43,744 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-07-21 10:37:43,744 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-07-21 10:37:43,744 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-07-21 10:37:43,744 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-07-21 10:37:43,745 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-07-21 10:37:43,745 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-21 10:37:43,745 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-07-21 10:37:43,745 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-07-21 10:37:43,745 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-07-21 10:37:43,746 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-07-21 10:37:43,746 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-07-21 10:37:43,746 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-21 10:37:43,746 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-07-21 10:37:43,746 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-07-21 10:37:43,747 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-07-21 10:37:43,747 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-21 10:37:43,747 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-21 10:37:43,747 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-07-21 10:37:43,747 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-07-21 10:37:43,748 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-07-21 10:37:43,748 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:37:43,748 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-21 10:37:43,748 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-07-21 10:37:43,748 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 -> FPandBPonlyIfFpWasNotPerfect
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY
[2020-07-21 10:37:44,019 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-21 10:37:44,037 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-21 10:37:44,042 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-21 10:37:44,044 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-07-21 10:37:44,046 INFO  L275        PluginConnector]: CDTParser initialized
[2020-07-21 10:37:44,047 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product39.cil.c
[2020-07-21 10:37:44,122 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac5d3b9d4/ccef58fc6d174b439240932b5a4d8b57/FLAGeea9c7341
[2020-07-21 10:37:44,674 INFO  L306              CDTParser]: Found 1 translation units.
[2020-07-21 10:37:44,675 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product39.cil.c
[2020-07-21 10:37:44,688 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac5d3b9d4/ccef58fc6d174b439240932b5a4d8b57/FLAGeea9c7341
[2020-07-21 10:37:44,979 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac5d3b9d4/ccef58fc6d174b439240932b5a4d8b57
[2020-07-21 10:37:44,988 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-21 10:37:44,991 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-21 10:37:44,992 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-21 10:37:44,992 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-21 10:37:44,996 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-21 10:37:44,997 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:37:44" (1/1) ...
[2020-07-21 10:37:45,001 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c0926b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:37:44, skipping insertion in model container
[2020-07-21 10:37:45,001 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:37:44" (1/1) ...
[2020-07-21 10:37:45,009 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-07-21 10:37:45,072 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-07-21 10:37:45,430 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-07-21 10:37:45,560 INFO  L203         MainTranslator]: Completed pre-run
[2020-07-21 10:37:45,661 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-07-21 10:37:45,696 INFO  L208         MainTranslator]: Completed translation
[2020-07-21 10:37:45,696 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:37:45 WrapperNode
[2020-07-21 10:37:45,697 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-21 10:37:45,697 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-21 10:37:45,698 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-21 10:37:45,698 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-07-21 10:37:45,712 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:37:45" (1/1) ...
[2020-07-21 10:37:45,712 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:37:45" (1/1) ...
[2020-07-21 10:37:45,732 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:37:45" (1/1) ...
[2020-07-21 10:37:45,732 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:37:45" (1/1) ...
[2020-07-21 10:37:45,762 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:37:45" (1/1) ...
[2020-07-21 10:37:45,772 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:37:45" (1/1) ...
[2020-07-21 10:37:45,780 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:37:45" (1/1) ...
[2020-07-21 10:37:45,792 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-21 10:37:45,793 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-21 10:37:45,793 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-07-21 10:37:45,793 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-07-21 10:37:45,794 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:37:45" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-21 10:37:45,862 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-21 10:37:45,863 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-21 10:37:45,863 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-07-21 10:37:45,863 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-07-21 10:37:45,863 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-07-21 10:37:45,863 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-07-21 10:37:45,863 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-07-21 10:37:45,864 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-07-21 10:37:45,864 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-07-21 10:37:45,864 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-07-21 10:37:45,864 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-07-21 10:37:45,864 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-07-21 10:37:45,864 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-07-21 10:37:45,865 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-07-21 10:37:45,865 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-07-21 10:37:45,865 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base
[2020-07-21 10:37:45,865 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor
[2020-07-21 10:37:45,865 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-07-21 10:37:45,865 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-07-21 10:37:45,866 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-07-21 10:37:45,866 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-07-21 10:37:45,866 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-07-21 10:37:45,866 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-07-21 10:37:45,866 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterLevel
[2020-07-21 10:37:45,866 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopSystem
[2020-07-21 10:37:45,867 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-07-21 10:37:45,867 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-07-21 10:37:45,868 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-07-21 10:37:45,868 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-07-21 10:37:45,868 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-07-21 10:37:45,868 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-07-21 10:37:45,868 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-07-21 10:37:45,868 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry
[2020-07-21 10:37:45,868 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-07-21 10:37:45,869 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-07-21 10:37:45,869 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-07-21 10:37:45,869 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-07-21 10:37:45,869 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-07-21 10:37:45,869 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1
[2020-07-21 10:37:45,869 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-21 10:37:45,869 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-07-21 10:37:45,869 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-07-21 10:37:45,869 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-07-21 10:37:45,869 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-07-21 10:37:45,870 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-07-21 10:37:45,870 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-07-21 10:37:45,870 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-07-21 10:37:45,870 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-07-21 10:37:45,870 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-07-21 10:37:45,870 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-07-21 10:37:45,870 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-07-21 10:37:45,870 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-07-21 10:37:45,870 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-07-21 10:37:45,870 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-07-21 10:37:45,871 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-07-21 10:37:45,871 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-07-21 10:37:45,871 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-07-21 10:37:45,871 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-07-21 10:37:45,871 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-07-21 10:37:45,871 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-07-21 10:37:45,871 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-07-21 10:37:45,872 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-07-21 10:37:45,872 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-07-21 10:37:45,872 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-07-21 10:37:45,872 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-07-21 10:37:45,872 INFO  L130     BoogieDeclarations]: Found specification of procedure stopSystem
[2020-07-21 10:37:45,872 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-07-21 10:37:45,873 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-07-21 10:37:45,873 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-07-21 10:37:45,873 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-07-21 10:37:45,873 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-07-21 10:37:45,873 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-07-21 10:37:45,874 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry
[2020-07-21 10:37:45,874 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-07-21 10:37:45,875 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-07-21 10:37:45,875 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-07-21 10:37:45,875 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-07-21 10:37:45,875 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1
[2020-07-21 10:37:45,876 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-07-21 10:37:45,876 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base
[2020-07-21 10:37:45,876 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterLevel
[2020-07-21 10:37:45,877 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor
[2020-07-21 10:37:45,877 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-07-21 10:37:45,877 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-07-21 10:37:45,878 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-07-21 10:37:45,878 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-07-21 10:37:45,878 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-07-21 10:37:45,879 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-07-21 10:37:45,879 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-07-21 10:37:45,879 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-21 10:37:45,879 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-07-21 10:37:45,880 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-21 10:37:46,911 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-21 10:37:46,912 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-07-21 10:37:46,917 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:37:46 BoogieIcfgContainer
[2020-07-21 10:37:46,918 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-21 10:37:46,919 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-21 10:37:46,919 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-07-21 10:37:46,923 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-07-21 10:37:46,923 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:37:44" (1/3) ...
[2020-07-21 10:37:46,924 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eceb7dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:37:46, skipping insertion in model container
[2020-07-21 10:37:46,924 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:37:45" (2/3) ...
[2020-07-21 10:37:46,924 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eceb7dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:37:46, skipping insertion in model container
[2020-07-21 10:37:46,925 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:37:46" (3/3) ...
[2020-07-21 10:37:46,926 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec4_product39.cil.c
[2020-07-21 10:37:46,937 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION
[2020-07-21 10:37:46,946 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-07-21 10:37:46,960 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-07-21 10:37:46,980 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-07-21 10:37:46,981 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-07-21 10:37:46,981 INFO  L377      AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect
[2020-07-21 10:37:46,981 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-21 10:37:46,981 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-21 10:37:46,981 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-07-21 10:37:46,981 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-21 10:37:46,982 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-21 10:37:47,005 INFO  L276                IsEmpty]: Start isEmpty. Operand 175 states.
[2020-07-21 10:37:47,015 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2020-07-21 10:37:47,015 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 10:37:47,016 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]
[2020-07-21 10:37:47,017 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 10:37:47,023 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 10:37:47,024 INFO  L82        PathProgramCache]: Analyzing trace with hash -1123456625, now seen corresponding path program 1 times
[2020-07-21 10:37:47,033 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 10:37:47,033 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801311726]
[2020-07-21 10:37:47,034 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:37:47,303 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-21 10:37:47,308 INFO  L263         TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 1 conjunts are in the unsatisfiable core
[2020-07-21 10:37:47,317 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 10:37:47,347 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-21 10:37:47,347 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 10:37:47,350 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801311726]
[2020-07-21 10:37:47,351 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 10:37:47,352 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2020-07-21 10:37:47,353 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713300586]
[2020-07-21 10:37:47,361 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 2 states
[2020-07-21 10:37:47,362 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 10:37:47,373 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2020-07-21 10:37:47,374 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-07-21 10:37:47,376 INFO  L87              Difference]: Start difference. First operand 175 states. Second operand 2 states.
[2020-07-21 10:37:47,418 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 10:37:47,419 INFO  L93              Difference]: Finished difference Result 264 states and 327 transitions.
[2020-07-21 10:37:47,419 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2020-07-21 10:37:47,420 INFO  L78                 Accepts]: Start accepts. Automaton has 2 states. Word has length 46
[2020-07-21 10:37:47,421 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 10:37:47,434 INFO  L225             Difference]: With dead ends: 264
[2020-07-21 10:37:47,434 INFO  L226             Difference]: Without dead ends: 132
[2020-07-21 10:37:47,439 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-07-21 10:37:47,456 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 132 states.
[2020-07-21 10:37:47,490 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132.
[2020-07-21 10:37:47,491 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 132 states.
[2020-07-21 10:37:47,495 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 155 transitions.
[2020-07-21 10:37:47,497 INFO  L78                 Accepts]: Start accepts. Automaton has 132 states and 155 transitions. Word has length 46
[2020-07-21 10:37:47,497 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 10:37:47,498 INFO  L479      AbstractCegarLoop]: Abstraction has 132 states and 155 transitions.
[2020-07-21 10:37:47,498 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 2 states.
[2020-07-21 10:37:47,498 INFO  L276                IsEmpty]: Start isEmpty. Operand 132 states and 155 transitions.
[2020-07-21 10:37:47,502 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2020-07-21 10:37:47,502 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 10:37:47,502 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]
[2020-07-21 10:37:47,716 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:37:47,717 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 10:37:47,717 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 10:37:47,718 INFO  L82        PathProgramCache]: Analyzing trace with hash -790150173, now seen corresponding path program 1 times
[2020-07-21 10:37:47,718 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 10:37:47,719 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251747411]
[2020-07-21 10:37:47,719 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:37:47,903 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-21 10:37:47,906 INFO  L263         TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 2 conjunts are in the unsatisfiable core
[2020-07-21 10:37:47,918 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 10:37:47,972 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-21 10:37:47,972 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 10:37:47,973 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251747411]
[2020-07-21 10:37:47,973 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 10:37:47,973 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-07-21 10:37:47,974 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703638419]
[2020-07-21 10:37:47,976 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-07-21 10:37:47,976 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 10:37:47,976 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-07-21 10:37:47,977 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 10:37:47,977 INFO  L87              Difference]: Start difference. First operand 132 states and 155 transitions. Second operand 3 states.
[2020-07-21 10:37:48,000 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 10:37:48,001 INFO  L93              Difference]: Finished difference Result 207 states and 241 transitions.
[2020-07-21 10:37:48,001 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-07-21 10:37:48,002 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 47
[2020-07-21 10:37:48,002 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 10:37:48,004 INFO  L225             Difference]: With dead ends: 207
[2020-07-21 10:37:48,005 INFO  L226             Difference]: Without dead ends: 123
[2020-07-21 10:37:48,006 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 10:37:48,007 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 123 states.
[2020-07-21 10:37:48,043 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123.
[2020-07-21 10:37:48,043 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 123 states.
[2020-07-21 10:37:48,045 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 143 transitions.
[2020-07-21 10:37:48,045 INFO  L78                 Accepts]: Start accepts. Automaton has 123 states and 143 transitions. Word has length 47
[2020-07-21 10:37:48,046 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 10:37:48,046 INFO  L479      AbstractCegarLoop]: Abstraction has 123 states and 143 transitions.
[2020-07-21 10:37:48,046 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-07-21 10:37:48,046 INFO  L276                IsEmpty]: Start isEmpty. Operand 123 states and 143 transitions.
[2020-07-21 10:37:48,048 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2020-07-21 10:37:48,048 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 10:37:48,049 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]
[2020-07-21 10:37:48,261 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:37:48,262 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 10:37:48,262 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 10:37:48,262 INFO  L82        PathProgramCache]: Analyzing trace with hash 271076632, now seen corresponding path program 1 times
[2020-07-21 10:37:48,262 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 10:37:48,263 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394308546]
[2020-07-21 10:37:48,263 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:37:48,432 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-21 10:37:48,435 INFO  L263         TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 8 conjunts are in the unsatisfiable core
[2020-07-21 10:37:48,439 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 10:37:48,467 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-21 10:37:48,467 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 10:37:48,467 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394308546]
[2020-07-21 10:37:48,468 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 10:37:48,468 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-07-21 10:37:48,468 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82959139]
[2020-07-21 10:37:48,469 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-07-21 10:37:48,469 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 10:37:48,469 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-07-21 10:37:48,469 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 10:37:48,470 INFO  L87              Difference]: Start difference. First operand 123 states and 143 transitions. Second operand 3 states.
[2020-07-21 10:37:48,502 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 10:37:48,502 INFO  L93              Difference]: Finished difference Result 319 states and 381 transitions.
[2020-07-21 10:37:48,503 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-07-21 10:37:48,503 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 51
[2020-07-21 10:37:48,504 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 10:37:48,507 INFO  L225             Difference]: With dead ends: 319
[2020-07-21 10:37:48,508 INFO  L226             Difference]: Without dead ends: 220
[2020-07-21 10:37:48,509 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 10:37:48,510 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 220 states.
[2020-07-21 10:37:48,540 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 216.
[2020-07-21 10:37:48,540 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 216 states.
[2020-07-21 10:37:48,542 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 257 transitions.
[2020-07-21 10:37:48,543 INFO  L78                 Accepts]: Start accepts. Automaton has 216 states and 257 transitions. Word has length 51
[2020-07-21 10:37:48,543 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 10:37:48,543 INFO  L479      AbstractCegarLoop]: Abstraction has 216 states and 257 transitions.
[2020-07-21 10:37:48,543 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-07-21 10:37:48,544 INFO  L276                IsEmpty]: Start isEmpty. Operand 216 states and 257 transitions.
[2020-07-21 10:37:48,546 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 58
[2020-07-21 10:37:48,546 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 10:37:48,547 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]
[2020-07-21 10:37:48,760 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:37:48,761 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 10:37:48,761 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 10:37:48,762 INFO  L82        PathProgramCache]: Analyzing trace with hash -1813365187, now seen corresponding path program 1 times
[2020-07-21 10:37:48,762 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 10:37:48,763 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954592096]
[2020-07-21 10:37:48,763 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:37:48,948 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-21 10:37:48,952 INFO  L263         TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 14 conjunts are in the unsatisfiable core
[2020-07-21 10:37:48,965 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 10:37:49,047 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-21 10:37:49,047 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 10:37:49,048 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954592096]
[2020-07-21 10:37:49,048 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 10:37:49,048 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-07-21 10:37:49,049 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381879246]
[2020-07-21 10:37:49,050 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-07-21 10:37:49,050 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 10:37:49,050 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-07-21 10:37:49,051 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2020-07-21 10:37:49,052 INFO  L87              Difference]: Start difference. First operand 216 states and 257 transitions. Second operand 6 states.
[2020-07-21 10:37:49,349 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 10:37:49,350 INFO  L93              Difference]: Finished difference Result 581 states and 729 transitions.
[2020-07-21 10:37:49,350 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-07-21 10:37:49,350 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 57
[2020-07-21 10:37:49,351 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 10:37:49,356 INFO  L225             Difference]: With dead ends: 581
[2020-07-21 10:37:49,356 INFO  L226             Difference]: Without dead ends: 389
[2020-07-21 10:37:49,358 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2020-07-21 10:37:49,359 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 389 states.
[2020-07-21 10:37:49,398 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389.
[2020-07-21 10:37:49,398 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 389 states.
[2020-07-21 10:37:49,402 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 484 transitions.
[2020-07-21 10:37:49,402 INFO  L78                 Accepts]: Start accepts. Automaton has 389 states and 484 transitions. Word has length 57
[2020-07-21 10:37:49,402 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 10:37:49,403 INFO  L479      AbstractCegarLoop]: Abstraction has 389 states and 484 transitions.
[2020-07-21 10:37:49,403 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-07-21 10:37:49,403 INFO  L276                IsEmpty]: Start isEmpty. Operand 389 states and 484 transitions.
[2020-07-21 10:37:49,407 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 62
[2020-07-21 10:37:49,407 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 10:37:49,407 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]
[2020-07-21 10:37:49,620 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:37:49,621 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 10:37:49,622 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 10:37:49,622 INFO  L82        PathProgramCache]: Analyzing trace with hash 2128676035, now seen corresponding path program 1 times
[2020-07-21 10:37:49,622 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 10:37:49,623 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854087928]
[2020-07-21 10:37:49,623 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:37:49,786 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-21 10:37:49,789 INFO  L263         TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 15 conjunts are in the unsatisfiable core
[2020-07-21 10:37:49,792 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 10:37:49,825 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-21 10:37:49,825 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 10:37:49,825 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854087928]
[2020-07-21 10:37:49,826 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 10:37:49,826 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-07-21 10:37:49,826 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311075085]
[2020-07-21 10:37:49,827 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-07-21 10:37:49,827 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 10:37:49,827 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-07-21 10:37:49,827 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2020-07-21 10:37:49,828 INFO  L87              Difference]: Start difference. First operand 389 states and 484 transitions. Second operand 6 states.
[2020-07-21 10:37:50,097 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 10:37:50,097 INFO  L93              Difference]: Finished difference Result 910 states and 1201 transitions.
[2020-07-21 10:37:50,098 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-07-21 10:37:50,098 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 61
[2020-07-21 10:37:50,098 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 10:37:50,103 INFO  L225             Difference]: With dead ends: 910
[2020-07-21 10:37:50,104 INFO  L226             Difference]: Without dead ends: 545
[2020-07-21 10:37:50,106 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2020-07-21 10:37:50,107 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 545 states.
[2020-07-21 10:37:50,141 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 527.
[2020-07-21 10:37:50,141 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 527 states.
[2020-07-21 10:37:50,145 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 669 transitions.
[2020-07-21 10:37:50,146 INFO  L78                 Accepts]: Start accepts. Automaton has 527 states and 669 transitions. Word has length 61
[2020-07-21 10:37:50,146 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 10:37:50,146 INFO  L479      AbstractCegarLoop]: Abstraction has 527 states and 669 transitions.
[2020-07-21 10:37:50,147 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-07-21 10:37:50,147 INFO  L276                IsEmpty]: Start isEmpty. Operand 527 states and 669 transitions.
[2020-07-21 10:37:50,151 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 113
[2020-07-21 10:37:50,151 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 10:37:50,152 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 10:37:50,366 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:37:50,367 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 10:37:50,368 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 10:37:50,368 INFO  L82        PathProgramCache]: Analyzing trace with hash -1521472315, now seen corresponding path program 1 times
[2020-07-21 10:37:50,369 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 10:37:50,369 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697423782]
[2020-07-21 10:37:50,370 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:37:50,584 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-21 10:37:50,587 INFO  L263         TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 3 conjunts are in the unsatisfiable core
[2020-07-21 10:37:50,590 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 10:37:50,610 INFO  L134       CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2020-07-21 10:37:50,610 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 10:37:50,610 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697423782]
[2020-07-21 10:37:50,611 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 10:37:50,611 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-07-21 10:37:50,611 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832904415]
[2020-07-21 10:37:50,612 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-07-21 10:37:50,612 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 10:37:50,612 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-07-21 10:37:50,612 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 10:37:50,613 INFO  L87              Difference]: Start difference. First operand 527 states and 669 transitions. Second operand 3 states.
[2020-07-21 10:37:50,710 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 10:37:50,710 INFO  L93              Difference]: Finished difference Result 622 states and 789 transitions.
[2020-07-21 10:37:50,711 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-07-21 10:37:50,711 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 112
[2020-07-21 10:37:50,711 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 10:37:50,713 INFO  L225             Difference]: With dead ends: 622
[2020-07-21 10:37:50,714 INFO  L226             Difference]: Without dead ends: 266
[2020-07-21 10:37:50,715 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 10:37:50,716 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 266 states.
[2020-07-21 10:37:50,730 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266.
[2020-07-21 10:37:50,730 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 266 states.
[2020-07-21 10:37:50,732 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 327 transitions.
[2020-07-21 10:37:50,732 INFO  L78                 Accepts]: Start accepts. Automaton has 266 states and 327 transitions. Word has length 112
[2020-07-21 10:37:50,732 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 10:37:50,733 INFO  L479      AbstractCegarLoop]: Abstraction has 266 states and 327 transitions.
[2020-07-21 10:37:50,733 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-07-21 10:37:50,733 INFO  L276                IsEmpty]: Start isEmpty. Operand 266 states and 327 transitions.
[2020-07-21 10:37:50,735 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 131
[2020-07-21 10:37:50,735 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 10:37:50,735 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 10:37:50,949 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:37:50,950 INFO  L427      AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 10:37:50,951 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 10:37:50,951 INFO  L82        PathProgramCache]: Analyzing trace with hash 388844155, now seen corresponding path program 1 times
[2020-07-21 10:37:50,951 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 10:37:50,952 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464417916]
[2020-07-21 10:37:50,952 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:37:51,115 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-21 10:37:51,118 INFO  L263         TraceCheckSpWp]: Trace formula consists of 835 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-07-21 10:37:51,121 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 10:37:51,155 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2020-07-21 10:37:51,156 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 10:37:51,156 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464417916]
[2020-07-21 10:37:51,156 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 10:37:51,156 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-07-21 10:37:51,157 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077165016]
[2020-07-21 10:37:51,157 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-07-21 10:37:51,157 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 10:37:51,158 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-07-21 10:37:51,158 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-07-21 10:37:51,158 INFO  L87              Difference]: Start difference. First operand 266 states and 327 transitions. Second operand 6 states.
[2020-07-21 10:37:51,198 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 10:37:51,198 INFO  L93              Difference]: Finished difference Result 518 states and 660 transitions.
[2020-07-21 10:37:51,198 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-07-21 10:37:51,199 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 130
[2020-07-21 10:37:51,199 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 10:37:51,201 INFO  L225             Difference]: With dead ends: 518
[2020-07-21 10:37:51,201 INFO  L226             Difference]: Without dead ends: 276
[2020-07-21 10:37:51,203 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2020-07-21 10:37:51,203 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 276 states.
[2020-07-21 10:37:51,216 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276.
[2020-07-21 10:37:51,216 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 276 states.
[2020-07-21 10:37:51,218 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 338 transitions.
[2020-07-21 10:37:51,219 INFO  L78                 Accepts]: Start accepts. Automaton has 276 states and 338 transitions. Word has length 130
[2020-07-21 10:37:51,219 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 10:37:51,219 INFO  L479      AbstractCegarLoop]: Abstraction has 276 states and 338 transitions.
[2020-07-21 10:37:51,219 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-07-21 10:37:51,219 INFO  L276                IsEmpty]: Start isEmpty. Operand 276 states and 338 transitions.
[2020-07-21 10:37:51,221 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 131
[2020-07-21 10:37:51,221 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 10:37:51,222 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 10:37:51,434 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:37:51,435 INFO  L427      AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 10:37:51,436 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 10:37:51,436 INFO  L82        PathProgramCache]: Analyzing trace with hash -668993923, now seen corresponding path program 1 times
[2020-07-21 10:37:51,436 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 10:37:51,437 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258956498]
[2020-07-21 10:37:51,438 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:37:51,627 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-21 10:37:51,629 INFO  L263         TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 5 conjunts are in the unsatisfiable core
[2020-07-21 10:37:51,651 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 10:37:51,689 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2020-07-21 10:37:51,689 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 10:37:51,690 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258956498]
[2020-07-21 10:37:51,690 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 10:37:51,690 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-07-21 10:37:51,690 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41155034]
[2020-07-21 10:37:51,691 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-07-21 10:37:51,691 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 10:37:51,691 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-07-21 10:37:51,692 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-07-21 10:37:51,692 INFO  L87              Difference]: Start difference. First operand 276 states and 338 transitions. Second operand 5 states.
[2020-07-21 10:37:51,718 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 10:37:51,719 INFO  L93              Difference]: Finished difference Result 526 states and 671 transitions.
[2020-07-21 10:37:51,719 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-07-21 10:37:51,719 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 130
[2020-07-21 10:37:51,719 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 10:37:51,721 INFO  L225             Difference]: With dead ends: 526
[2020-07-21 10:37:51,722 INFO  L226             Difference]: Without dead ends: 274
[2020-07-21 10:37:51,723 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-07-21 10:37:51,724 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 274 states.
[2020-07-21 10:37:51,739 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274.
[2020-07-21 10:37:51,739 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 274 states.
[2020-07-21 10:37:51,741 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 331 transitions.
[2020-07-21 10:37:51,742 INFO  L78                 Accepts]: Start accepts. Automaton has 274 states and 331 transitions. Word has length 130
[2020-07-21 10:37:51,742 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 10:37:51,742 INFO  L479      AbstractCegarLoop]: Abstraction has 274 states and 331 transitions.
[2020-07-21 10:37:51,742 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-07-21 10:37:51,743 INFO  L276                IsEmpty]: Start isEmpty. Operand 274 states and 331 transitions.
[2020-07-21 10:37:51,745 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 131
[2020-07-21 10:37:51,746 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 10:37:51,746 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 10:37:51,959 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:37:51,960 INFO  L427      AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 10:37:51,961 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 10:37:51,961 INFO  L82        PathProgramCache]: Analyzing trace with hash -1878236162, now seen corresponding path program 1 times
[2020-07-21 10:37:51,961 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 10:37:51,962 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208122090]
[2020-07-21 10:37:51,962 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:37:52,120 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-21 10:37:52,123 INFO  L263         TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-07-21 10:37:52,127 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 10:37:52,179 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-21 10:37:52,179 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 10:37:52,180 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208122090]
[2020-07-21 10:37:52,180 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 10:37:52,180 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-07-21 10:37:52,180 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307236861]
[2020-07-21 10:37:52,181 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-07-21 10:37:52,181 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 10:37:52,181 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-07-21 10:37:52,181 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-07-21 10:37:52,181 INFO  L87              Difference]: Start difference. First operand 274 states and 331 transitions. Second operand 6 states.
[2020-07-21 10:37:52,907 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 10:37:52,907 INFO  L93              Difference]: Finished difference Result 731 states and 946 transitions.
[2020-07-21 10:37:52,908 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-07-21 10:37:52,908 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 130
[2020-07-21 10:37:52,908 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 10:37:52,912 INFO  L225             Difference]: With dead ends: 731
[2020-07-21 10:37:52,912 INFO  L226             Difference]: Without dead ends: 481
[2020-07-21 10:37:52,914 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2020-07-21 10:37:52,915 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 481 states.
[2020-07-21 10:37:52,945 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 466.
[2020-07-21 10:37:52,946 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 466 states.
[2020-07-21 10:37:52,948 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 571 transitions.
[2020-07-21 10:37:52,949 INFO  L78                 Accepts]: Start accepts. Automaton has 466 states and 571 transitions. Word has length 130
[2020-07-21 10:37:52,949 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 10:37:52,949 INFO  L479      AbstractCegarLoop]: Abstraction has 466 states and 571 transitions.
[2020-07-21 10:37:52,949 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-07-21 10:37:52,949 INFO  L276                IsEmpty]: Start isEmpty. Operand 466 states and 571 transitions.
[2020-07-21 10:37:52,953 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 135
[2020-07-21 10:37:52,953 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 10:37:52,953 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 10:37:53,166 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:37:53,167 INFO  L427      AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 10:37:53,168 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 10:37:53,168 INFO  L82        PathProgramCache]: Analyzing trace with hash 108116472, now seen corresponding path program 1 times
[2020-07-21 10:37:53,168 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 10:37:53,169 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453101846]
[2020-07-21 10:37:53,169 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:37:53,339 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-21 10:37:53,342 INFO  L263         TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-07-21 10:37:53,346 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 10:37:53,427 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-21 10:37:53,427 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2020-07-21 10:37:53,733 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 18 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2020-07-21 10:37:53,734 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453101846]
[2020-07-21 10:37:53,734 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-07-21 10:37:53,734 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12
[2020-07-21 10:37:53,734 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824901771]
[2020-07-21 10:37:53,735 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-07-21 10:37:53,735 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 10:37:53,736 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-07-21 10:37:53,736 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132
[2020-07-21 10:37:53,736 INFO  L87              Difference]: Start difference. First operand 466 states and 571 transitions. Second operand 12 states.
[2020-07-21 10:37:55,092 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 10:37:55,093 INFO  L93              Difference]: Finished difference Result 1227 states and 1643 transitions.
[2020-07-21 10:37:55,093 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2020-07-21 10:37:55,093 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states. Word has length 134
[2020-07-21 10:37:55,094 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 10:37:55,099 INFO  L225             Difference]: With dead ends: 1227
[2020-07-21 10:37:55,100 INFO  L226             Difference]: Without dead ends: 785
[2020-07-21 10:37:55,102 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 256 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506
[2020-07-21 10:37:55,103 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 785 states.
[2020-07-21 10:37:55,138 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 628.
[2020-07-21 10:37:55,138 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 628 states.
[2020-07-21 10:37:55,142 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 772 transitions.
[2020-07-21 10:37:55,142 INFO  L78                 Accepts]: Start accepts. Automaton has 628 states and 772 transitions. Word has length 134
[2020-07-21 10:37:55,143 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 10:37:55,143 INFO  L479      AbstractCegarLoop]: Abstraction has 628 states and 772 transitions.
[2020-07-21 10:37:55,143 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-07-21 10:37:55,143 INFO  L276                IsEmpty]: Start isEmpty. Operand 628 states and 772 transitions.
[2020-07-21 10:37:55,146 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 186
[2020-07-21 10:37:55,147 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 10:37:55,147 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 10:37:55,362 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:37:55,363 INFO  L427      AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 10:37:55,363 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 10:37:55,364 INFO  L82        PathProgramCache]: Analyzing trace with hash -116138867, now seen corresponding path program 2 times
[2020-07-21 10:37:55,364 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 10:37:55,365 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228061004]
[2020-07-21 10:37:55,365 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:37:55,626 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-07-21 10:37:55,626 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-21 10:37:55,715 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-07-21 10:37:55,715 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-21 10:37:56,011 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-07-21 10:37:56,011 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-07-21 10:37:56,224 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:37:56,489 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:37:56 BoogieIcfgContainer
[2020-07-21 10:37:56,490 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-07-21 10:37:56,492 INFO  L168              Benchmark]: Toolchain (without parser) took 11501.84 ms. Allocated memory was 143.1 MB in the beginning and 378.5 MB in the end (delta: 235.4 MB). Free memory was 98.4 MB in the beginning and 287.3 MB in the end (delta: -188.9 MB). Peak memory consumption was 217.0 MB. Max. memory is 7.1 GB.
[2020-07-21 10:37:56,493 INFO  L168              Benchmark]: CDTParser took 1.55 ms. Allocated memory is still 143.1 MB. Free memory was 118.0 MB in the beginning and 117.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB.
[2020-07-21 10:37:56,494 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 705.19 ms. Allocated memory was 143.1 MB in the beginning and 201.3 MB in the end (delta: 58.2 MB). Free memory was 97.9 MB in the beginning and 170.5 MB in the end (delta: -72.6 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB.
[2020-07-21 10:37:56,495 INFO  L168              Benchmark]: Boogie Preprocessor took 95.03 ms. Allocated memory is still 201.3 MB. Free memory was 170.5 MB in the beginning and 166.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB.
[2020-07-21 10:37:56,496 INFO  L168              Benchmark]: RCFGBuilder took 1124.92 ms. Allocated memory was 201.3 MB in the beginning and 229.6 MB in the end (delta: 28.3 MB). Free memory was 166.3 MB in the beginning and 196.2 MB in the end (delta: -29.9 MB). Peak memory consumption was 89.6 MB. Max. memory is 7.1 GB.
[2020-07-21 10:37:56,496 INFO  L168              Benchmark]: TraceAbstraction took 9570.87 ms. Allocated memory was 229.6 MB in the beginning and 378.5 MB in the end (delta: 148.9 MB). Free memory was 196.2 MB in the beginning and 287.3 MB in the end (delta: -91.0 MB). Peak memory consumption was 228.3 MB. Max. memory is 7.1 GB.
[2020-07-21 10:37:56,500 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 1.55 ms. Allocated memory is still 143.1 MB. Free memory was 118.0 MB in the beginning and 117.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 705.19 ms. Allocated memory was 143.1 MB in the beginning and 201.3 MB in the end (delta: 58.2 MB). Free memory was 97.9 MB in the beginning and 170.5 MB in the end (delta: -72.6 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 95.03 ms. Allocated memory is still 201.3 MB. Free memory was 170.5 MB in the beginning and 166.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 1124.92 ms. Allocated memory was 201.3 MB in the beginning and 229.6 MB in the end (delta: 28.3 MB). Free memory was 166.3 MB in the beginning and 196.2 MB in the end (delta: -29.9 MB). Peak memory consumption was 89.6 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 9570.87 ms. Allocated memory was 229.6 MB in the beginning and 378.5 MB in the end (delta: 148.9 MB). Free memory was 196.2 MB in the beginning and 287.3 MB in the end (delta: -91.0 MB). Peak memory consumption was 228.3 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 722]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L247]              static struct __ACC__ERR *head  =    (struct __ACC__ERR *)0;
[L524]              int pumpRunning  =    0;
[L525]              int systemActive  =    1;
[L728]              int waterLevel  =    1;
[L729]              int methaneLevelCritical  =    0;
[L822]              int cleanupTimeShifts  =    4;
        VAL         [\old(cleanupTimeShifts)=89, \old(head)=46, \old(head)=26, \old(methaneLevelCritical)=39, \old(pumpRunning)=40, \old(systemActive)=48, \old(waterLevel)=47, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1]
[L895]              int retValue_acc ;
[L896]              int tmp ;
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1]
[L900]  FCALL       select_helpers()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1]
[L901]  FCALL       select_features()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1]
[L902]  CALL, EXPR  valid_product()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1]
[L69]               int retValue_acc ;
[L72]               retValue_acc = 1
[L73]               return (retValue_acc);
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1]
[L902]  RET, EXPR   valid_product()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1]
[L902]              tmp = valid_product()
[L904]  COND TRUE   \read(tmp)
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1]
[L906]  FCALL       setup()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1]
[L907]  CALL        runTest()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1]
[L889]  CALL        test()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1]
[L450]              int splverifierCounter ;
[L451]              int tmp ;
[L452]              int tmp___0 ;
[L453]              int tmp___1 ;
[L454]              int tmp___2 ;
[L457]              splverifierCounter = 0
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1]
[L459]  COND TRUE   1
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1]
[L461]  COND TRUE   splverifierCounter < 4
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1]
[L467]              tmp = __VERIFIER_nondet_int()
[L469]  COND TRUE   \read(tmp)
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1]
[L471]  CALL        waterRise()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1]
[L746]  COND TRUE   waterLevel < 2
[L747]              waterLevel = waterLevel + 1
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2]
[L471]  RET         waterRise()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2]
[L477]              tmp___0 = __VERIFIER_nondet_int()
[L479]  COND FALSE  !(\read(tmp___0))
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2]
[L487]              tmp___2 = __VERIFIER_nondet_int()
[L489]  COND TRUE   \read(tmp___2)
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=-1, waterLevel=2]
[L504]  CALL        timeShift()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2]
[L532]  COND FALSE  !(\read(pumpRunning))
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2]
[L539]  COND TRUE   \read(systemActive)
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2]
[L541]  CALL        processEnvironment()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2]
[L587]              int tmp ;
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2]
[L590]  COND FALSE  !(\read(pumpRunning))
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2]
[L605]  CALL        processEnvironment__wrappee__highWaterSensor()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2]
[L561]              int tmp ;
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2]
[L564]  COND TRUE   ! pumpRunning
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2]
[L566]  CALL, EXPR  isHighWaterLevel()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2]
[L684]              int retValue_acc ;
[L685]              int tmp ;
[L686]              int tmp___0 ;
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2]
[L690]  CALL, EXPR  isHighWaterSensorDry()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2]
[L808]              int retValue_acc ;
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2]
[L811]  COND FALSE  !(waterLevel < 2)
[L815]              retValue_acc = 0
[L816]              return (retValue_acc);
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2]
[L690]  RET, EXPR   isHighWaterSensorDry()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2]
[L690]              tmp = isHighWaterSensorDry()
[L692]  COND FALSE  !(\read(tmp))
[L695]              tmp___0 = 1
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2]
[L697]              retValue_acc = tmp___0
[L698]              return (retValue_acc);
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2]
[L566]  RET, EXPR   isHighWaterLevel()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2]
[L566]              tmp = isHighWaterLevel()
[L568]  COND TRUE   \read(tmp)
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2]
[L570]  CALL        activatePump()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2]
[L615]              pumpRunning = 1
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2]
[L570]  RET         activatePump()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2]
[L605]  RET         processEnvironment__wrappee__highWaterSensor()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2]
[L541]  RET         processEnvironment()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2]
[L547]  CALL        __utac_acc__Specification4_spec__1()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2]
[L919]              int tmp ;
[L920]              int tmp___0 ;
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2]
[L924]  CALL, EXPR  getWaterLevel()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2]
[L799]              int retValue_acc ;
[L802]              retValue_acc = waterLevel
[L803]              return (retValue_acc);
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=2, systemActive=1, waterLevel=2]
[L924]  RET, EXPR   getWaterLevel()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, getWaterLevel()=2, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2]
[L924]              tmp = getWaterLevel()
[L926]  COND FALSE  !(tmp == 0)
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=2, waterLevel=2]
[L547]  RET         __utac_acc__Specification4_spec__1()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2]
[L504]  RET         timeShift()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=-1, waterLevel=2]
[L459]  COND TRUE   1
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=-1, waterLevel=2]
[L461]  COND TRUE   splverifierCounter < 4
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=-1, waterLevel=2]
[L467]              tmp = __VERIFIER_nondet_int()
[L469]  COND FALSE  !(\read(tmp))
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-1, waterLevel=2]
[L477]              tmp___0 = __VERIFIER_nondet_int()
[L479]  COND FALSE  !(\read(tmp___0))
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-1, waterLevel=2]
[L487]              tmp___2 = __VERIFIER_nondet_int()
[L489]  COND TRUE   \read(tmp___2)
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2]
[L504]  CALL        timeShift()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2]
[L532]  COND TRUE   \read(pumpRunning)
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2]
[L534]  CALL        lowerWaterLevel()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2]
[L734]  COND TRUE   waterLevel > 0
[L735]              waterLevel = waterLevel - 1
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1]
[L534]  RET         lowerWaterLevel()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1]
[L539]  COND TRUE   \read(systemActive)
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1]
[L541]  CALL        processEnvironment()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1]
[L587]              int tmp ;
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1]
[L590]  COND TRUE   \read(pumpRunning)
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1]
[L592]  CALL, EXPR  isMethaneAlarm()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1]
[L628]              int retValue_acc ;
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1]
[L632]  CALL, EXPR  isMethaneLevelCritical()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1]
[L767]              int retValue_acc ;
[L770]              retValue_acc = methaneLevelCritical
[L771]              return (retValue_acc);
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=1]
[L632]  RET, EXPR   isMethaneLevelCritical()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1]
[L632]              retValue_acc = isMethaneLevelCritical()
[L634]              return (retValue_acc);
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=1]
[L592]  RET, EXPR   isMethaneAlarm()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneAlarm()=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1]
[L592]              tmp = isMethaneAlarm()
[L594]  COND FALSE  !(\read(tmp))
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=1]
[L600]  CALL        processEnvironment__wrappee__highWaterSensor()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1]
[L561]              int tmp ;
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1]
[L564]  COND FALSE  !(! pumpRunning)
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1]
[L579]  FCALL       processEnvironment__wrappee__base()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1]
[L600]  RET         processEnvironment__wrappee__highWaterSensor()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=1]
[L541]  RET         processEnvironment()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1]
[L547]  CALL        __utac_acc__Specification4_spec__1()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1]
[L919]              int tmp ;
[L920]              int tmp___0 ;
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1]
[L924]  CALL, EXPR  getWaterLevel()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1]
[L799]              int retValue_acc ;
[L802]              retValue_acc = waterLevel
[L803]              return (retValue_acc);
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1]
[L924]  RET, EXPR   getWaterLevel()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, getWaterLevel()=1, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1]
[L924]              tmp = getWaterLevel()
[L926]  COND FALSE  !(tmp == 0)
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1]
[L547]  RET         __utac_acc__Specification4_spec__1()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1]
[L504]  RET         timeShift()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1]
[L459]  COND TRUE   1
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1]
[L461]  COND TRUE   splverifierCounter < 4
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1]
[L467]              tmp = __VERIFIER_nondet_int()
[L469]  COND FALSE  !(\read(tmp))
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1]
[L477]              tmp___0 = __VERIFIER_nondet_int()
[L479]  COND FALSE  !(\read(tmp___0))
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1]
[L487]              tmp___2 = __VERIFIER_nondet_int()
[L489]  COND TRUE   \read(tmp___2)
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1]
[L504]  CALL        timeShift()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1]
[L532]  COND TRUE   \read(pumpRunning)
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1]
[L534]  CALL        lowerWaterLevel()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1]
[L734]  COND TRUE   waterLevel > 0
[L735]              waterLevel = waterLevel - 1
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0]
[L534]  RET         lowerWaterLevel()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0]
[L539]  COND TRUE   \read(systemActive)
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0]
[L541]  CALL        processEnvironment()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0]
[L587]              int tmp ;
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0]
[L590]  COND TRUE   \read(pumpRunning)
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0]
[L592]  CALL, EXPR  isMethaneAlarm()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0]
[L628]              int retValue_acc ;
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0]
[L632]  CALL, EXPR  isMethaneLevelCritical()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0]
[L767]              int retValue_acc ;
[L770]              retValue_acc = methaneLevelCritical
[L771]              return (retValue_acc);
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0]
[L632]  RET, EXPR   isMethaneLevelCritical()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0]
[L632]              retValue_acc = isMethaneLevelCritical()
[L634]              return (retValue_acc);
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0]
[L592]  RET, EXPR   isMethaneAlarm()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, isMethaneAlarm()=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0]
[L592]              tmp = isMethaneAlarm()
[L594]  COND FALSE  !(\read(tmp))
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0]
[L600]  CALL        processEnvironment__wrappee__highWaterSensor()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0]
[L561]              int tmp ;
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0]
[L564]  COND FALSE  !(! pumpRunning)
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0]
[L579]  FCALL       processEnvironment__wrappee__base()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0]
[L600]  RET         processEnvironment__wrappee__highWaterSensor()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0]
[L541]  RET         processEnvironment()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0]
[L547]  CALL        __utac_acc__Specification4_spec__1()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0]
[L919]              int tmp ;
[L920]              int tmp___0 ;
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0]
[L924]  CALL, EXPR  getWaterLevel()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0]
[L799]              int retValue_acc ;
[L802]              retValue_acc = waterLevel
[L803]              return (retValue_acc);
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0]
[L924]  RET, EXPR   getWaterLevel()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, getWaterLevel()=0, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0]
[L924]              tmp = getWaterLevel()
[L926]  COND TRUE   tmp == 0
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0]
[L928]  CALL, EXPR  isPumpRunning()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0]
[L639]              int retValue_acc ;
[L642]              retValue_acc = pumpRunning
[L643]              return (retValue_acc);
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=0]
[L928]  RET, EXPR   isPumpRunning()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0]
[L928]              tmp___0 = isPumpRunning()
[L930]  COND TRUE   \read(tmp___0)
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=0]
[L932]  CALL        __automaton_fail()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0]
[L722]              __VERIFIER_error()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0]

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 39 procedures, 231 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9.2s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1594 SDtfs, 886 SDslu, 2724 SDs, 0 SdLazy, 1435 SolverSat, 395 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1045 GetRequests, 990 SyntacticMatches, 6 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=628occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 194 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 1083 NumberOfCodeBlocks, 1083 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1021 ConstructedInterpolants, 0 QuantifiedInterpolants, 179901 SizeOfPredicates, 32 NumberOfNonLiveVariables, 7478 ConjunctsInSsa, 80 ConjunctsInUnsatCore, 11 InterpolantComputations, 9 PerfectInterpolantSequences, 142/159 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...