/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product01.cil.c


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


This is Ultimate 0.1.25-5644d1e-m
[2020-08-18 21:44:02,704 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-08-18 21:44:02,708 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-08-18 21:44:02,747 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-08-18 21:44:02,748 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-08-18 21:44:02,757 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-08-18 21:44:02,759 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-08-18 21:44:02,763 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-08-18 21:44:02,765 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-08-18 21:44:02,768 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-08-18 21:44:02,769 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-08-18 21:44:02,770 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-08-18 21:44:02,770 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-08-18 21:44:02,773 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-08-18 21:44:02,775 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-08-18 21:44:02,777 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-08-18 21:44:02,778 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-08-18 21:44:02,779 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-08-18 21:44:02,781 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-08-18 21:44:02,789 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-08-18 21:44:02,791 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-08-18 21:44:02,792 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-08-18 21:44:02,793 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-08-18 21:44:02,794 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-08-18 21:44:02,796 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-08-18 21:44:02,796 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-08-18 21:44:02,796 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-08-18 21:44:02,797 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-08-18 21:44:02,801 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-08-18 21:44:02,802 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-08-18 21:44:02,802 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-08-18 21:44:02,803 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-08-18 21:44:02,804 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-08-18 21:44:02,810 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-08-18 21:44:02,811 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-08-18 21:44:02,811 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-08-18 21:44:02,812 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-08-18 21:44:02,812 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-08-18 21:44:02,813 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-08-18 21:44:02,814 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-08-18 21:44:02,815 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-08-18 21:44:02,816 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-08-18 21:44:02,854 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-08-18 21:44:02,855 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-08-18 21:44:02,857 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-08-18 21:44:02,857 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-08-18 21:44:02,858 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-08-18 21:44:02,858 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-08-18 21:44:02,858 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-08-18 21:44:02,858 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-08-18 21:44:02,858 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-08-18 21:44:02,859 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-08-18 21:44:02,860 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-08-18 21:44:02,860 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-08-18 21:44:02,860 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-08-18 21:44:02,860 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-08-18 21:44:02,861 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-08-18 21:44:02,861 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-08-18 21:44:02,861 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-08-18 21:44:02,861 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-08-18 21:44:02,861 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-08-18 21:44:02,862 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-08-18 21:44:02,862 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-08-18 21:44:02,862 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-18 21:44:02,862 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-08-18 21:44:02,862 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-08-18 21:44:02,862 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-08-18 21:44:02,863 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-08-18 21:44:02,863 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-08-18 21:44:02,863 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-08-18 21:44:02,863 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-08-18 21:44:02,863 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST;
[2020-08-18 21:44:03,198 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-08-18 21:44:03,219 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-08-18 21:44:03,225 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-08-18 21:44:03,227 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-08-18 21:44:03,228 INFO  L275        PluginConnector]: CDTParser initialized
[2020-08-18 21:44:03,228 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product01.cil.c
[2020-08-18 21:44:03,303 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14b5e0b5f/c52e644b9d7d4e79b567c329b848990c/FLAG2ca5f29ac
[2020-08-18 21:44:03,878 INFO  L306              CDTParser]: Found 1 translation units.
[2020-08-18 21:44:03,882 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product01.cil.c
[2020-08-18 21:44:03,914 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14b5e0b5f/c52e644b9d7d4e79b567c329b848990c/FLAG2ca5f29ac
[2020-08-18 21:44:04,128 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14b5e0b5f/c52e644b9d7d4e79b567c329b848990c
[2020-08-18 21:44:04,140 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-08-18 21:44:04,142 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-08-18 21:44:04,146 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-08-18 21:44:04,146 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-08-18 21:44:04,150 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-08-18 21:44:04,151 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:44:04" (1/1) ...
[2020-08-18 21:44:04,155 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56344ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:44:04, skipping insertion in model container
[2020-08-18 21:44:04,155 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:44:04" (1/1) ...
[2020-08-18 21:44:04,164 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-08-18 21:44:04,233 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-08-18 21:44:04,538 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-18 21:44:04,551 INFO  L203         MainTranslator]: Completed pre-run
[2020-08-18 21:44:04,728 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-18 21:44:04,775 INFO  L208         MainTranslator]: Completed translation
[2020-08-18 21:44:04,776 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:44:04 WrapperNode
[2020-08-18 21:44:04,776 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-08-18 21:44:04,777 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-08-18 21:44:04,777 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-08-18 21:44:04,777 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-08-18 21:44:04,791 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:44:04" (1/1) ...
[2020-08-18 21:44:04,791 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:44:04" (1/1) ...
[2020-08-18 21:44:04,812 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:44:04" (1/1) ...
[2020-08-18 21:44:04,812 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:44:04" (1/1) ...
[2020-08-18 21:44:04,846 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:44:04" (1/1) ...
[2020-08-18 21:44:04,856 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:44:04" (1/1) ...
[2020-08-18 21:44:04,862 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:44:04" (1/1) ...
[2020-08-18 21:44:04,870 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-08-18 21:44:04,870 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-08-18 21:44:04,871 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-08-18 21:44:04,871 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-08-18 21:44:04,872 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:44:04" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-18 21:44:04,950 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-08-18 21:44:04,950 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-08-18 21:44:04,950 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-08-18 21:44:04,951 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-08-18 21:44:04,951 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-08-18 21:44:04,952 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-08-18 21:44:04,952 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-08-18 21:44:04,952 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-08-18 21:44:04,952 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-08-18 21:44:04,952 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-08-18 21:44:04,953 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-08-18 21:44:04,953 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-08-18 21:44:04,954 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-08-18 21:44:04,954 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-08-18 21:44:04,954 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-08-18 21:44:04,955 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1
[2020-08-18 21:44:04,955 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-08-18 21:44:04,955 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-08-18 21:44:04,955 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-08-18 21:44:04,956 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-08-18 21:44:04,956 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-08-18 21:44:04,956 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-08-18 21:44:04,956 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-08-18 21:44:04,957 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-08-18 21:44:04,957 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-08-18 21:44:04,958 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-08-18 21:44:04,958 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-08-18 21:44:04,958 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-08-18 21:44:04,958 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-08-18 21:44:04,959 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-08-18 21:44:04,959 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-08-18 21:44:04,959 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-08-18 21:44:04,959 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-08-18 21:44:04,959 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-08-18 21:44:04,959 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-08-18 21:44:04,960 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-08-18 21:44:04,960 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-08-18 21:44:04,960 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-08-18 21:44:04,960 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-08-18 21:44:04,960 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-08-18 21:44:04,961 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-08-18 21:44:04,961 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-08-18 21:44:04,961 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-08-18 21:44:04,961 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-08-18 21:44:04,961 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-08-18 21:44:04,961 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1
[2020-08-18 21:44:04,964 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-08-18 21:44:04,964 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-08-18 21:44:04,964 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-08-18 21:44:04,964 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-08-18 21:44:04,964 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-08-18 21:44:04,964 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-08-18 21:44:04,964 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-08-18 21:44:04,965 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-08-18 21:44:04,965 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-08-18 21:44:04,965 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-08-18 21:44:04,965 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-08-18 21:44:04,966 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-08-18 21:44:04,966 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-08-18 21:44:04,966 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-08-18 21:44:04,966 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-08-18 21:44:04,967 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-08-18 21:44:04,967 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-08-18 21:44:04,967 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-08-18 21:44:04,967 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-08-18 21:44:04,967 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-08-18 21:44:04,967 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-08-18 21:44:04,967 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-08-18 21:44:04,968 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-08-18 21:44:04,968 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-08-18 21:44:04,968 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-08-18 21:44:04,968 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-08-18 21:44:04,969 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-08-18 21:44:04,969 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-08-18 21:44:04,970 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-08-18 21:44:04,970 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-08-18 21:44:04,970 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-08-18 21:44:04,971 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-08-18 21:44:04,971 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-08-18 21:44:04,971 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-08-18 21:44:04,971 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-08-18 21:44:04,971 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-08-18 21:44:06,035 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-08-18 21:44:06,035 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-08-18 21:44:06,040 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:44:06 BoogieIcfgContainer
[2020-08-18 21:44:06,040 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-08-18 21:44:06,042 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-08-18 21:44:06,042 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-08-18 21:44:06,045 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-08-18 21:44:06,045 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 09:44:04" (1/3) ...
[2020-08-18 21:44:06,046 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41177a5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:44:06, skipping insertion in model container
[2020-08-18 21:44:06,046 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:44:04" (2/3) ...
[2020-08-18 21:44:06,046 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41177a5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:44:06, skipping insertion in model container
[2020-08-18 21:44:06,046 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:44:06" (3/3) ...
[2020-08-18 21:44:06,048 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec3_product01.cil.c
[2020-08-18 21:44:06,059 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-08-18 21:44:06,066 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-08-18 21:44:06,080 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-08-18 21:44:06,105 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-08-18 21:44:06,105 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-08-18 21:44:06,105 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-08-18 21:44:06,105 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-08-18 21:44:06,105 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-08-18 21:44:06,105 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-08-18 21:44:06,106 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-08-18 21:44:06,106 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-08-18 21:44:06,127 INFO  L276                IsEmpty]: Start isEmpty. Operand 133 states.
[2020-08-18 21:44:06,135 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2020-08-18 21:44:06,136 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 21:44:06,137 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 21:44:06,137 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:44:06,143 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:44:06,144 INFO  L82        PathProgramCache]: Analyzing trace with hash -438635737, now seen corresponding path program 1 times
[2020-08-18 21:44:06,152 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:44:06,153 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618627274]
[2020-08-18 21:44:06,153 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:44:06,405 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:06,853 WARN  L193               SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 21:44:06,855 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 21:44:06,863 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:06,932 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 21:44:06,933 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:06,934 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 21:44:06,938 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:06,939 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 21:44:06,940 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:06,945 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 21:44:06,946 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:06,947 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32
[2020-08-18 21:44:06,948 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:06,949 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2020-08-18 21:44:06,950 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:06,952 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44
[2020-08-18 21:44:06,953 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:06,968 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 21:44:06,969 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618627274]
[2020-08-18 21:44:06,971 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 21:44:06,971 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-08-18 21:44:06,972 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270899754]
[2020-08-18 21:44:06,977 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-08-18 21:44:06,978 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 21:44:06,992 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-08-18 21:44:06,993 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-08-18 21:44:06,995 INFO  L87              Difference]: Start difference. First operand 133 states. Second operand 3 states.
[2020-08-18 21:44:07,871 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 21:44:07,872 INFO  L93              Difference]: Finished difference Result 211 states and 284 transitions.
[2020-08-18 21:44:07,872 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-08-18 21:44:07,874 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 52
[2020-08-18 21:44:07,875 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 21:44:07,887 INFO  L225             Difference]: With dead ends: 211
[2020-08-18 21:44:07,888 INFO  L226             Difference]: Without dead ends: 115
[2020-08-18 21:44:07,892 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-08-18 21:44:07,912 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 115 states.
[2020-08-18 21:44:07,997 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 87.
[2020-08-18 21:44:07,998 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 87 states.
[2020-08-18 21:44:08,007 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 101 transitions.
[2020-08-18 21:44:08,009 INFO  L78                 Accepts]: Start accepts. Automaton has 87 states and 101 transitions. Word has length 52
[2020-08-18 21:44:08,010 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 21:44:08,010 INFO  L479      AbstractCegarLoop]: Abstraction has 87 states and 101 transitions.
[2020-08-18 21:44:08,011 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-08-18 21:44:08,011 INFO  L276                IsEmpty]: Start isEmpty. Operand 87 states and 101 transitions.
[2020-08-18 21:44:08,016 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 54
[2020-08-18 21:44:08,016 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 21:44:08,017 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 21:44:08,017 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-08-18 21:44:08,017 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:44:08,018 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:44:08,019 INFO  L82        PathProgramCache]: Analyzing trace with hash -1274777231, now seen corresponding path program 1 times
[2020-08-18 21:44:08,019 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:44:08,019 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585860239]
[2020-08-18 21:44:08,020 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:44:08,097 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:08,396 WARN  L193               SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 21:44:08,397 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 21:44:08,402 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:08,422 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 21:44:08,423 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:08,424 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 21:44:08,424 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:08,425 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 21:44:08,426 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:08,427 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 21:44:08,428 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:08,429 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33
[2020-08-18 21:44:08,430 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:08,431 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39
[2020-08-18 21:44:08,432 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:08,433 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2020-08-18 21:44:08,433 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:08,441 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 21:44:08,442 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585860239]
[2020-08-18 21:44:08,442 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 21:44:08,442 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-08-18 21:44:08,443 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366463262]
[2020-08-18 21:44:08,444 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-08-18 21:44:08,445 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 21:44:08,445 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-08-18 21:44:08,445 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-08-18 21:44:08,446 INFO  L87              Difference]: Start difference. First operand 87 states and 101 transitions. Second operand 4 states.
[2020-08-18 21:44:08,929 WARN  L193               SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-18 21:44:09,362 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 21:44:09,362 INFO  L93              Difference]: Finished difference Result 144 states and 175 transitions.
[2020-08-18 21:44:09,363 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-08-18 21:44:09,363 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 53
[2020-08-18 21:44:09,364 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 21:44:09,366 INFO  L225             Difference]: With dead ends: 144
[2020-08-18 21:44:09,366 INFO  L226             Difference]: Without dead ends: 99
[2020-08-18 21:44:09,367 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-08-18 21:44:09,368 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 99 states.
[2020-08-18 21:44:09,397 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 78.
[2020-08-18 21:44:09,398 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 78 states.
[2020-08-18 21:44:09,398 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions.
[2020-08-18 21:44:09,399 INFO  L78                 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 53
[2020-08-18 21:44:09,399 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 21:44:09,399 INFO  L479      AbstractCegarLoop]: Abstraction has 78 states and 89 transitions.
[2020-08-18 21:44:09,399 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-08-18 21:44:09,400 INFO  L276                IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions.
[2020-08-18 21:44:09,401 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 58
[2020-08-18 21:44:09,401 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 21:44:09,402 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 21:44:09,402 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-08-18 21:44:09,402 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:44:09,402 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:44:09,403 INFO  L82        PathProgramCache]: Analyzing trace with hash -1377435257, now seen corresponding path program 1 times
[2020-08-18 21:44:09,403 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:44:09,403 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557470529]
[2020-08-18 21:44:09,404 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:44:09,455 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:09,725 WARN  L193               SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 21:44:09,726 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 21:44:09,740 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:09,757 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 21:44:09,758 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:09,759 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 21:44:09,760 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:09,761 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 21:44:09,762 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:09,763 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 21:44:09,764 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:09,765 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:44:09,766 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:09,767 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43
[2020-08-18 21:44:09,767 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:09,768 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49
[2020-08-18 21:44:09,769 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:09,777 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 21:44:09,777 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557470529]
[2020-08-18 21:44:09,778 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 21:44:09,778 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-08-18 21:44:09,778 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739855605]
[2020-08-18 21:44:09,779 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-08-18 21:44:09,779 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 21:44:09,779 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-08-18 21:44:09,780 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-08-18 21:44:09,780 INFO  L87              Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 4 states.
[2020-08-18 21:44:10,066 WARN  L193               SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-18 21:44:10,561 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 21:44:10,561 INFO  L93              Difference]: Finished difference Result 153 states and 189 transitions.
[2020-08-18 21:44:10,562 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-08-18 21:44:10,562 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 57
[2020-08-18 21:44:10,563 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 21:44:10,565 INFO  L225             Difference]: With dead ends: 153
[2020-08-18 21:44:10,566 INFO  L226             Difference]: Without dead ends: 99
[2020-08-18 21:44:10,567 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-08-18 21:44:10,568 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 99 states.
[2020-08-18 21:44:10,611 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 78.
[2020-08-18 21:44:10,611 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 78 states.
[2020-08-18 21:44:10,612 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 88 transitions.
[2020-08-18 21:44:10,613 INFO  L78                 Accepts]: Start accepts. Automaton has 78 states and 88 transitions. Word has length 57
[2020-08-18 21:44:10,614 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 21:44:10,614 INFO  L479      AbstractCegarLoop]: Abstraction has 78 states and 88 transitions.
[2020-08-18 21:44:10,622 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-08-18 21:44:10,622 INFO  L276                IsEmpty]: Start isEmpty. Operand 78 states and 88 transitions.
[2020-08-18 21:44:10,628 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 61
[2020-08-18 21:44:10,628 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 21:44:10,629 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]
[2020-08-18 21:44:10,629 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-08-18 21:44:10,629 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:44:10,629 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:44:10,630 INFO  L82        PathProgramCache]: Analyzing trace with hash 1699431063, now seen corresponding path program 1 times
[2020-08-18 21:44:10,630 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:44:10,630 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504621423]
[2020-08-18 21:44:10,630 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:44:10,678 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:10,939 WARN  L193               SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 21:44:10,940 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 21:44:10,952 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:10,979 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 21:44:10,981 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:10,984 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 21:44:10,986 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:10,988 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 21:44:10,989 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:10,998 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 21:44:10,999 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:11,002 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35
[2020-08-18 21:44:11,003 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:11,004 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2020-08-18 21:44:11,005 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:11,007 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46
[2020-08-18 21:44:11,009 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:11,043 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52
[2020-08-18 21:44:11,045 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:11,067 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 21:44:11,068 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504621423]
[2020-08-18 21:44:11,068 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 21:44:11,068 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-08-18 21:44:11,069 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646017657]
[2020-08-18 21:44:11,070 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-08-18 21:44:11,071 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 21:44:11,071 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-08-18 21:44:11,072 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2020-08-18 21:44:11,072 INFO  L87              Difference]: Start difference. First operand 78 states and 88 transitions. Second operand 7 states.
[2020-08-18 21:44:11,441 WARN  L193               SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-18 21:44:12,280 WARN  L193               SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 21:44:12,545 WARN  L193               SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 21:44:12,769 WARN  L193               SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 21:44:13,003 WARN  L193               SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-18 21:44:13,270 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 21:44:13,270 INFO  L93              Difference]: Finished difference Result 196 states and 245 transitions.
[2020-08-18 21:44:13,271 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-08-18 21:44:13,271 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 60
[2020-08-18 21:44:13,272 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 21:44:13,274 INFO  L225             Difference]: With dead ends: 196
[2020-08-18 21:44:13,274 INFO  L226             Difference]: Without dead ends: 142
[2020-08-18 21:44:13,275 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132
[2020-08-18 21:44:13,276 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 142 states.
[2020-08-18 21:44:13,306 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 128.
[2020-08-18 21:44:13,306 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 128 states.
[2020-08-18 21:44:13,307 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 150 transitions.
[2020-08-18 21:44:13,308 INFO  L78                 Accepts]: Start accepts. Automaton has 128 states and 150 transitions. Word has length 60
[2020-08-18 21:44:13,308 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 21:44:13,308 INFO  L479      AbstractCegarLoop]: Abstraction has 128 states and 150 transitions.
[2020-08-18 21:44:13,308 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-08-18 21:44:13,308 INFO  L276                IsEmpty]: Start isEmpty. Operand 128 states and 150 transitions.
[2020-08-18 21:44:13,310 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2020-08-18 21:44:13,310 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 21:44:13,310 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 21:44:13,311 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-08-18 21:44:13,311 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:44:13,311 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:44:13,311 INFO  L82        PathProgramCache]: Analyzing trace with hash -1843670287, now seen corresponding path program 1 times
[2020-08-18 21:44:13,312 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:44:13,312 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608348360]
[2020-08-18 21:44:13,312 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:44:13,335 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:13,584 WARN  L193               SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 21:44:13,589 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 21:44:13,603 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:13,617 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 21:44:13,618 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:13,620 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 21:44:13,620 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:13,621 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 21:44:13,622 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:13,623 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 21:44:13,624 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:13,630 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34
[2020-08-18 21:44:13,631 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:13,633 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39
[2020-08-18 21:44:13,633 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:13,634 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44
[2020-08-18 21:44:13,635 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:13,635 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50
[2020-08-18 21:44:13,636 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:13,637 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56
[2020-08-18 21:44:13,638 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:13,646 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 21:44:13,646 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608348360]
[2020-08-18 21:44:13,647 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 21:44:13,647 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-08-18 21:44:13,647 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854771288]
[2020-08-18 21:44:13,648 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-08-18 21:44:13,648 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 21:44:13,648 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-08-18 21:44:13,648 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-08-18 21:44:13,648 INFO  L87              Difference]: Start difference. First operand 128 states and 150 transitions. Second operand 5 states.
[2020-08-18 21:44:13,922 WARN  L193               SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-18 21:44:14,379 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 21:44:14,379 INFO  L93              Difference]: Finished difference Result 192 states and 233 transitions.
[2020-08-18 21:44:14,380 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-08-18 21:44:14,380 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 64
[2020-08-18 21:44:14,380 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 21:44:14,382 INFO  L225             Difference]: With dead ends: 192
[2020-08-18 21:44:14,382 INFO  L226             Difference]: Without dead ends: 127
[2020-08-18 21:44:14,383 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2020-08-18 21:44:14,384 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 127 states.
[2020-08-18 21:44:14,409 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 115.
[2020-08-18 21:44:14,410 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 115 states.
[2020-08-18 21:44:14,411 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 130 transitions.
[2020-08-18 21:44:14,411 INFO  L78                 Accepts]: Start accepts. Automaton has 115 states and 130 transitions. Word has length 64
[2020-08-18 21:44:14,411 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 21:44:14,412 INFO  L479      AbstractCegarLoop]: Abstraction has 115 states and 130 transitions.
[2020-08-18 21:44:14,412 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-08-18 21:44:14,412 INFO  L276                IsEmpty]: Start isEmpty. Operand 115 states and 130 transitions.
[2020-08-18 21:44:14,413 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2020-08-18 21:44:14,413 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 21:44:14,414 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 21:44:14,414 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-08-18 21:44:14,414 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:44:14,414 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:44:14,415 INFO  L82        PathProgramCache]: Analyzing trace with hash -2045663983, now seen corresponding path program 1 times
[2020-08-18 21:44:14,415 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:44:14,415 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183897175]
[2020-08-18 21:44:14,415 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:44:14,470 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-08-18 21:44:14,473 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-08-18 21:44:14,473 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-08-18 21:44:14,477 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-08-18 21:44:14,500 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 09:44:14 BoogieIcfgContainer
[2020-08-18 21:44:14,500 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-08-18 21:44:14,502 INFO  L168              Benchmark]: Toolchain (without parser) took 10360.24 ms. Allocated memory was 140.5 MB in the beginning and 409.5 MB in the end (delta: 269.0 MB). Free memory was 102.7 MB in the beginning and 306.1 MB in the end (delta: -203.4 MB). Peak memory consumption was 65.6 MB. Max. memory is 7.1 GB.
[2020-08-18 21:44:14,503 INFO  L168              Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-08-18 21:44:14,504 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 631.00 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 102.5 MB in the beginning and 174.3 MB in the end (delta: -71.8 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB.
[2020-08-18 21:44:14,504 INFO  L168              Benchmark]: Boogie Preprocessor took 93.12 ms. Allocated memory is still 204.5 MB. Free memory was 174.3 MB in the beginning and 169.7 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB.
[2020-08-18 21:44:14,505 INFO  L168              Benchmark]: RCFGBuilder took 1170.00 ms. Allocated memory was 204.5 MB in the beginning and 236.5 MB in the end (delta: 32.0 MB). Free memory was 169.0 MB in the beginning and 203.2 MB in the end (delta: -34.2 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB.
[2020-08-18 21:44:14,506 INFO  L168              Benchmark]: TraceAbstraction took 8458.62 ms. Allocated memory was 236.5 MB in the beginning and 409.5 MB in the end (delta: 173.0 MB). Free memory was 203.2 MB in the beginning and 306.1 MB in the end (delta: -102.9 MB). Peak memory consumption was 70.1 MB. Max. memory is 7.1 GB.
[2020-08-18 21:44:14,510 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 631.00 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 102.5 MB in the beginning and 174.3 MB in the end (delta: -71.8 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 93.12 ms. Allocated memory is still 204.5 MB. Free memory was 174.3 MB in the beginning and 169.7 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 1170.00 ms. Allocated memory was 204.5 MB in the beginning and 236.5 MB in the end (delta: 32.0 MB). Free memory was 169.0 MB in the beginning and 203.2 MB in the end (delta: -34.2 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 8458.62 ms. Allocated memory was 236.5 MB in the beginning and 409.5 MB in the end (delta: 173.0 MB). Free memory was 203.2 MB in the beginning and 306.1 MB in the end (delta: -102.9 MB). Peak memory consumption was 70.1 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 302]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L48]               int pumpRunning  =    0;
[L49]               int systemActive  =    1;
[L307]              int cleanupTimeShifts  =    4;
[L403]              int waterLevel  =    1;
[L404]              int methaneLevelCritical  =    0;
[L652]              static struct __ACC__ERR *head  =    (struct __ACC__ERR *)0;
[L380]              int retValue_acc ;
[L381]              int tmp ;
[L385]  FCALL       select_helpers()
[L386]  FCALL       select_features()
[L387]  CALL, EXPR  valid_product()
[L253]              int retValue_acc ;
[L256]              retValue_acc = 1
[L257]              return (retValue_acc);
[L387]  RET, EXPR   valid_product()
[L387]              tmp = valid_product()
[L389]  COND TRUE   \read(tmp)
[L391]  FCALL       setup()
[L392]  CALL        runTest()
[L374]  CALL        test()
[L160]              int splverifierCounter ;
[L161]              int tmp ;
[L162]              int tmp___0 ;
[L163]              int tmp___1 ;
[L164]              int tmp___2 ;
[L167]              splverifierCounter = 0
[L169]  COND TRUE   1
[L171]  COND TRUE   splverifierCounter < 4
[L177]              tmp = __VERIFIER_nondet_int()
[L179]  COND TRUE   \read(tmp)
[L181]  CALL        waterRise()
[L421]  COND TRUE   waterLevel < 2
[L422]              waterLevel = waterLevel + 1
[L181]  RET         waterRise()
[L187]              tmp___0 = __VERIFIER_nondet_int()
[L189]  COND FALSE  !(\read(tmp___0))
[L197]              tmp___2 = __VERIFIER_nondet_int()
[L199]  COND TRUE   \read(tmp___2)
[L212]  CALL        timeShift()
[L56]   COND FALSE  !(\read(pumpRunning))
[L63]   COND TRUE   \read(systemActive)
[L65]   FCALL       processEnvironment()
[L71]   CALL        __utac_acc__Specification3_spec__1()
[L265]              int tmp ;
[L266]              int tmp___0 ;
[L267]              int tmp___1 ;
[L271]  CALL, EXPR  isMethaneLevelCritical()
[L442]              int retValue_acc ;
[L445]              retValue_acc = methaneLevelCritical
[L446]              return (retValue_acc);
[L271]  RET, EXPR   isMethaneLevelCritical()
[L271]              tmp = isMethaneLevelCritical()
[L273]  COND FALSE  !(\read(tmp))
[L277]  CALL, EXPR  getWaterLevel()
[L474]              int retValue_acc ;
[L477]              retValue_acc = waterLevel
[L478]              return (retValue_acc);
[L277]  RET, EXPR   getWaterLevel()
[L277]              tmp___0 = getWaterLevel()
[L279]  COND TRUE   tmp___0 == 2
[L281]  CALL, EXPR  isPumpRunning()
[L111]              int retValue_acc ;
[L114]              retValue_acc = pumpRunning
[L115]              return (retValue_acc);
[L281]  RET, EXPR   isPumpRunning()
[L281]              tmp___1 = isPumpRunning()
[L283]  COND FALSE  !(\read(tmp___1))
[L287]  CALL        __automaton_fail()
[L302]              __VERIFIER_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 34 procedures, 197 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 366 SDtfs, 443 SDslu, 159 SDs, 0 SdLazy, 702 SolverSat, 237 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 96 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 350 NumberOfCodeBlocks, 350 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 281 ConstructedInterpolants, 0 QuantifiedInterpolants, 77364 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...