/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 --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product26.cil.c


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


This is Ultimate 0.1.25-adbd35c
[2020-10-12 17:57:28,744 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-12 17:57:28,747 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-12 17:57:28,776 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-12 17:57:28,776 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-12 17:57:28,777 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-12 17:57:28,778 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-12 17:57:28,780 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-12 17:57:28,782 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-12 17:57:28,783 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-12 17:57:28,784 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-12 17:57:28,785 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-12 17:57:28,785 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-12 17:57:28,786 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-12 17:57:28,787 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-12 17:57:28,788 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-12 17:57:28,789 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-12 17:57:28,790 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-12 17:57:28,792 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-12 17:57:28,795 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-12 17:57:28,796 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-12 17:57:28,798 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-12 17:57:28,799 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-12 17:57:28,800 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-12 17:57:28,803 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-12 17:57:28,803 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-12 17:57:28,804 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-12 17:57:28,805 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-12 17:57:28,805 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-12 17:57:28,806 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-12 17:57:28,807 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-12 17:57:28,807 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-12 17:57:28,808 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-12 17:57:28,809 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-12 17:57:28,810 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-12 17:57:28,811 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-12 17:57:28,811 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-12 17:57:28,811 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-12 17:57:28,812 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-12 17:57:28,813 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-12 17:57:28,813 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-12 17:57:28,814 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
[2020-10-12 17:57:28,838 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-12 17:57:28,838 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-12 17:57:28,839 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-12 17:57:28,840 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-12 17:57:28,840 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-12 17:57:28,840 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-12 17:57:28,840 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-12 17:57:28,841 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-12 17:57:28,841 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-12 17:57:28,841 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-12 17:57:28,841 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-12 17:57:28,841 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-12 17:57:28,842 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-12 17:57:28,842 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-12 17:57:28,842 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-12 17:57:28,842 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-12 17:57:28,842 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-12 17:57:28,843 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-12 17:57:28,843 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-12 17:57:28,843 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-12 17:57:28,843 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-12 17:57:28,843 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-12 17:57:28,844 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-12 17:57:28,844 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-12 17:57:28,844 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-12 17:57:28,844 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-12 17:57:28,844 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-12 17:57:28,845 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-12 17:57:28,845 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-12 17:57:28,845 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.rcfgbuilder: Size of a code block -> SequenceOfStatements
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 -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true;
[2020-10-12 17:57:29,159 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-12 17:57:29,171 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-12 17:57:29,174 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-12 17:57:29,175 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-12 17:57:29,176 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-12 17:57:29,177 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product26.cil.c
[2020-10-12 17:57:29,237 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/413555bf4/2edd956690fd4c838315d2733359b162/FLAG7a5a1220d
[2020-10-12 17:57:29,731 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-12 17:57:29,732 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product26.cil.c
[2020-10-12 17:57:29,753 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/413555bf4/2edd956690fd4c838315d2733359b162/FLAG7a5a1220d
[2020-10-12 17:57:30,039 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/413555bf4/2edd956690fd4c838315d2733359b162
[2020-10-12 17:57:30,048 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-12 17:57:30,050 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-12 17:57:30,051 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-12 17:57:30,051 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-12 17:57:30,055 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-12 17:57:30,056 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 05:57:30" (1/1) ...
[2020-10-12 17:57:30,059 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3727ae70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:30, skipping insertion in model container
[2020-10-12 17:57:30,059 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 05:57:30" (1/1) ...
[2020-10-12 17:57:30,067 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-12 17:57:30,131 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-12 17:57:30,497 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-12 17:57:30,516 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-12 17:57:30,708 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-12 17:57:30,741 INFO  L208         MainTranslator]: Completed translation
[2020-10-12 17:57:30,741 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:30 WrapperNode
[2020-10-12 17:57:30,742 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-12 17:57:30,742 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-12 17:57:30,742 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-12 17:57:30,743 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-12 17:57:30,753 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:30" (1/1) ...
[2020-10-12 17:57:30,754 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:30" (1/1) ...
[2020-10-12 17:57:30,777 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:30" (1/1) ...
[2020-10-12 17:57:30,778 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:30" (1/1) ...
[2020-10-12 17:57:30,827 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:30" (1/1) ...
[2020-10-12 17:57:30,838 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:30" (1/1) ...
[2020-10-12 17:57:30,843 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:30" (1/1) ...
[2020-10-12 17:57:30,868 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-12 17:57:30,869 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-12 17:57:30,869 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-12 17:57:30,869 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-12 17:57:30,870 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:30" (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
[2020-10-12 17:57:30,961 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-12 17:57:30,962 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-12 17:57:30,962 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-10-12 17:57:30,962 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-10-12 17:57:30,962 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-10-12 17:57:30,963 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-10-12 17:57:30,963 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-10-12 17:57:30,964 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-12 17:57:30,964 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-10-12 17:57:30,964 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-10-12 17:57:30,965 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-10-12 17:57:30,965 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-10-12 17:57:30,965 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-10-12 17:57:30,965 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-10-12 17:57:30,965 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-10-12 17:57:30,966 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-10-12 17:57:30,966 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-10-12 17:57:30,966 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-10-12 17:57:30,967 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry
[2020-10-12 17:57:30,967 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-10-12 17:57:30,967 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-10-12 17:57:30,967 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-10-12 17:57:30,968 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-10-12 17:57:30,968 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-10-12 17:57:30,968 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-10-12 17:57:30,969 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-10-12 17:57:30,969 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-10-12 17:57:30,969 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base
[2020-10-12 17:57:30,969 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-10-12 17:57:30,969 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor
[2020-10-12 17:57:30,969 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-10-12 17:57:30,970 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-10-12 17:57:30,970 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-10-12 17:57:30,970 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-10-12 17:57:30,970 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-10-12 17:57:30,970 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterLevel
[2020-10-12 17:57:30,970 INFO  L138     BoogieDeclarations]: Found implementation of procedure startSystem
[2020-10-12 17:57:30,970 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-10-12 17:57:30,971 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1
[2020-10-12 17:57:30,971 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-10-12 17:57:30,973 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-12 17:57:30,973 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-10-12 17:57:30,973 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-10-12 17:57:30,973 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-10-12 17:57:30,973 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-10-12 17:57:30,975 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-10-12 17:57:30,975 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-10-12 17:57:30,975 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-10-12 17:57:30,975 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-10-12 17:57:30,976 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-10-12 17:57:30,976 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-10-12 17:57:30,976 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-10-12 17:57:30,976 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-10-12 17:57:30,977 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-10-12 17:57:30,977 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-12 17:57:30,977 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-10-12 17:57:30,977 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-10-12 17:57:30,977 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-10-12 17:57:30,978 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-10-12 17:57:30,978 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-10-12 17:57:30,978 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry
[2020-10-12 17:57:30,978 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-12 17:57:30,978 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-12 17:57:30,979 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-10-12 17:57:30,979 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-10-12 17:57:30,979 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-10-12 17:57:30,979 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-10-12 17:57:30,979 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-10-12 17:57:30,979 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-10-12 17:57:30,980 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-10-12 17:57:30,980 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-10-12 17:57:30,981 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-12 17:57:30,982 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-10-12 17:57:30,982 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-10-12 17:57:30,982 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-10-12 17:57:30,982 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-10-12 17:57:30,983 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-10-12 17:57:30,983 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-10-12 17:57:30,983 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-10-12 17:57:30,983 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-10-12 17:57:30,983 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-10-12 17:57:30,983 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-10-12 17:57:30,983 INFO  L130     BoogieDeclarations]: Found specification of procedure startSystem
[2020-10-12 17:57:30,984 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1
[2020-10-12 17:57:30,984 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-10-12 17:57:30,984 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base
[2020-10-12 17:57:30,984 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterLevel
[2020-10-12 17:57:30,984 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor
[2020-10-12 17:57:30,984 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-10-12 17:57:30,985 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-12 17:57:30,985 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-12 17:57:30,985 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-12 17:57:31,980 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-12 17:57:31,980 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-10-12 17:57:31,985 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:57:31 BoogieIcfgContainer
[2020-10-12 17:57:31,986 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-12 17:57:31,987 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-12 17:57:31,987 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-12 17:57:31,990 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-12 17:57:31,991 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 05:57:30" (1/3) ...
[2020-10-12 17:57:31,991 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27586e7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 05:57:31, skipping insertion in model container
[2020-10-12 17:57:31,992 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:30" (2/3) ...
[2020-10-12 17:57:31,992 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27586e7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 05:57:31, skipping insertion in model container
[2020-10-12 17:57:31,992 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:57:31" (3/3) ...
[2020-10-12 17:57:31,994 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec3_product26.cil.c
[2020-10-12 17:57:32,005 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-12 17:57:32,014 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-12 17:57:32,028 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-12 17:57:32,053 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-10-12 17:57:32,053 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-10-12 17:57:32,053 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-12 17:57:32,053 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-12 17:57:32,054 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-12 17:57:32,054 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-10-12 17:57:32,054 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-12 17:57:32,054 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-12 17:57:32,077 INFO  L276                IsEmpty]: Start isEmpty. Operand 168 states.
[2020-10-12 17:57:32,087 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2020-10-12 17:57:32,088 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-12 17:57:32,089 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]
[2020-10-12 17:57:32,089 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-12 17:57:32,095 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-12 17:57:32,095 INFO  L82        PathProgramCache]: Analyzing trace with hash 1563256651, now seen corresponding path program 1 times
[2020-10-12 17:57:32,102 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-12 17:57:32,103 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775557712]
[2020-10-12 17:57:32,103 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-12 17:57:32,377 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:57:32,506 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:57:32,591 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:57:33,467 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:57:34,523 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:57:34,524 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 84
[2020-10-12 17:57:34,524 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-12 17:57:34,525 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2140
[2020-10-12 17:57:34,528 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:57:34,528 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 15
[2020-10-12 17:57:34,528 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-12 17:57:34,529 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 67
[2020-10-12 17:57:34,529 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-12 17:57:35,104 WARN  L193               SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-10-12 17:57:35,106 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-12 17:57:35,132 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:57:35,152 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:57:35,255 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:57:35,255 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:57:35,256 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:57:35,256 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 121
[2020-10-12 17:57:35,256 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:57:35,256 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:57:35,257 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:57:35,257 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-12 17:57:35,257 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:57:35,311 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-10-12 17:57:35,313 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:57:35,316 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:57:35,318 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:57:35,319 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 7
[2020-10-12 17:57:35,319 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:57:35,320 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-10-12 17:57:35,320 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:57:35,320 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:57:35,320 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:57:35,321 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-12 17:57:35,321 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-12 17:57:35,323 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-10-12 17:57:35,325 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:57:35,326 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:57:35,329 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:57:35,329 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 7
[2020-10-12 17:57:35,330 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:57:35,330 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-12 17:57:35,330 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:57:35,330 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:57:35,331 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:57:35,331 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-12 17:57:35,331 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:57:35,333 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-10-12 17:57:35,335 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:57:35,336 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:57:35,339 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:57:35,340 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:57:35,340 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:57:35,340 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-10-12 17:57:35,341 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:57:35,341 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:57:35,341 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:57:35,341 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-10-12 17:57:35,341 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:57:35,344 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-10-12 17:57:35,345 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:57:35,347 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:57:35,348 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:57:35,349 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 7
[2020-10-12 17:57:35,349 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:57:35,349 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-12 17:57:35,350 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:57:35,350 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:57:35,350 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:57:35,350 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-12 17:57:35,350 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:57:35,354 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32
[2020-10-12 17:57:35,356 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:57:35,357 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:57:35,363 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:57:35,363 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:57:35,363 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:57:35,364 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-10-12 17:57:35,364 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:57:35,364 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:57:35,364 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:57:35,364 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-10-12 17:57:35,365 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:57:35,370 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2020-10-12 17:57:35,371 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:57:35,373 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:57:35,380 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:57:35,380 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:57:35,381 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:57:35,381 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-10-12 17:57:35,381 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:57:35,381 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-12 17:57:35,382 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:57:35,382 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-10-12 17:57:35,382 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:57:35,397 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44
[2020-10-12 17:57:35,398 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:57:35,399 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:57:35,401 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:57:35,401 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:57:35,401 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:57:35,401 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-12 17:57:35,402 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:57:35,402 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-12 17:57:35,402 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-12 17:57:35,402 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-12 17:57:35,402 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:57:35,420 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-12 17:57:35,421 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775557712]
[2020-10-12 17:57:35,423 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-12 17:57:35,424 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-10-12 17:57:35,424 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046587775]
[2020-10-12 17:57:35,432 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-12 17:57:35,432 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-12 17:57:35,446 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-12 17:57:35,449 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2020-10-12 17:57:35,451 INFO  L87              Difference]: Start difference. First operand 168 states. Second operand 8 states.
[2020-10-12 17:57:36,028 WARN  L193               SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-10-12 17:57:37,151 WARN  L193               SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-10-12 17:57:37,520 WARN  L193               SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-10-12 17:57:37,831 WARN  L193               SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-10-12 17:57:38,398 WARN  L193               SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-10-12 17:57:38,810 WARN  L193               SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-10-12 17:57:39,720 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-12 17:57:39,720 INFO  L93              Difference]: Finished difference Result 377 states and 515 transitions.
[2020-10-12 17:57:39,727 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-10-12 17:57:39,729 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 52
[2020-10-12 17:57:39,729 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-12 17:57:39,756 INFO  L225             Difference]: With dead ends: 377
[2020-10-12 17:57:39,756 INFO  L226             Difference]: Without dead ends: 225
[2020-10-12 17:57:39,764 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182
[2020-10-12 17:57:39,779 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 225 states.
[2020-10-12 17:57:39,861 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 188.
[2020-10-12 17:57:39,863 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 188 states.
[2020-10-12 17:57:39,865 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 222 transitions.
[2020-10-12 17:57:39,867 INFO  L78                 Accepts]: Start accepts. Automaton has 188 states and 222 transitions. Word has length 52
[2020-10-12 17:57:39,868 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-12 17:57:39,868 INFO  L479      AbstractCegarLoop]: Abstraction has 188 states and 222 transitions.
[2020-10-12 17:57:39,868 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-12 17:57:39,868 INFO  L276                IsEmpty]: Start isEmpty. Operand 188 states and 222 transitions.
[2020-10-12 17:57:39,872 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 63
[2020-10-12 17:57:39,873 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-12 17:57:39,873 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]
[2020-10-12 17:57:39,873 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-12 17:57:39,873 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-12 17:57:39,874 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-12 17:57:39,874 INFO  L82        PathProgramCache]: Analyzing trace with hash -236421410, now seen corresponding path program 1 times
[2020-10-12 17:57:39,874 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-12 17:57:39,875 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212810527]
[2020-10-12 17:57:39,875 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-12 17:57:39,907 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:57:39,931 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:57:40,512 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:57:40,513 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 94
[2020-10-12 17:57:40,513 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:57:40,513 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 604
[2020-10-12 17:57:40,513 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:57:40,513 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-10-12 17:57:40,514 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-12 17:57:40,514 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 57
[2020-10-12 17:57:40,514 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:57:40,791 WARN  L193               SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-10-12 17:57:40,793 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-12 17:57:40,815 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:57:40,831 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:57:40,928 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:57:40,928 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:57:40,929 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:57:40,929 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 111
[2020-10-12 17:57:40,929 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:57:40,929 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:57:40,929 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:57:40,930 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-12 17:57:40,930 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:57:40,950 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-10-12 17:57:40,952 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:57:40,954 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:57:40,957 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:57:40,957 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 7
[2020-10-12 17:57:40,957 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:57:40,958 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-10-12 17:57:40,958 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:57:40,958 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:57:40,958 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:57:40,959 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-12 17:57:40,959 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:57:40,960 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-10-12 17:57:40,963 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:57:40,966 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:57:40,968 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:57:40,968 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 7
[2020-10-12 17:57:40,968 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:57:40,969 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-12 17:57:40,969 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:57:40,969 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:57:40,969 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:57:40,970 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-12 17:57:40,970 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:57:40,979 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-10-12 17:57:40,980 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:57:40,981 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:57:40,983 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:57:40,984 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:57:40,984 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:57:40,984 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-12 17:57:40,984 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:57:40,984 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:57:40,985 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:57:40,985 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-10-12 17:57:40,985 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:57:40,989 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-10-12 17:57:40,990 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:57:40,991 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:57:40,994 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:57:40,995 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 7
[2020-10-12 17:57:40,995 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:57:40,995 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-12 17:57:40,995 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:57:40,996 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:57:40,996 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:57:40,996 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-12 17:57:40,996 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:57:41,007 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28
[2020-10-12 17:57:41,009 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:57:41,010 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:57:41,014 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:57:41,014 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:57:41,014 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:57:41,015 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-10-12 17:57:41,015 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:57:41,015 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:57:41,015 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:57:41,016 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-10-12 17:57:41,016 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:57:41,018 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42
[2020-10-12 17:57:41,019 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:57:41,020 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:57:41,021 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:57:41,022 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:57:41,022 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:57:41,022 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-10-12 17:57:41,023 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:57:41,023 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-12 17:57:41,023 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-12 17:57:41,024 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-12 17:57:41,024 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-12 17:57:41,025 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48
[2020-10-12 17:57:41,026 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:57:41,027 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:57:41,028 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:57:41,028 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:57:41,028 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:57:41,028 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-10-12 17:57:41,029 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:57:41,031 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-12 17:57:41,031 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-12 17:57:41,031 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-12 17:57:41,032 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-10-12 17:57:41,033 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54
[2020-10-12 17:57:41,034 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:57:41,035 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:57:41,038 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:57:41,038 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:57:41,038 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:57:41,038 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-12 17:57:41,039 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:57:41,039 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-12 17:57:41,039 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-12 17:57:41,039 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-12 17:57:41,040 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:57:41,052 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-12 17:57:41,053 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212810527]
[2020-10-12 17:57:41,053 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-12 17:57:41,053 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-10-12 17:57:41,053 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509559162]
[2020-10-12 17:57:41,056 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-12 17:57:41,057 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-12 17:57:41,057 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-12 17:57:41,058 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-12 17:57:41,058 INFO  L87              Difference]: Start difference. First operand 188 states and 222 transitions. Second operand 5 states.
[2020-10-12 17:57:41,406 WARN  L193               SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-10-12 17:57:42,420 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-12 17:57:42,420 INFO  L93              Difference]: Finished difference Result 410 states and 528 transitions.
[2020-10-12 17:57:42,425 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-10-12 17:57:42,425 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 62
[2020-10-12 17:57:42,426 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-12 17:57:42,430 INFO  L225             Difference]: With dead ends: 410
[2020-10-12 17:57:42,431 INFO  L226             Difference]: Without dead ends: 246
[2020-10-12 17:57:42,436 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2020-10-12 17:57:42,439 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 246 states.
[2020-10-12 17:57:42,499 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 193.
[2020-10-12 17:57:42,499 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 193 states.
[2020-10-12 17:57:42,501 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 227 transitions.
[2020-10-12 17:57:42,501 INFO  L78                 Accepts]: Start accepts. Automaton has 193 states and 227 transitions. Word has length 62
[2020-10-12 17:57:42,502 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-12 17:57:42,502 INFO  L479      AbstractCegarLoop]: Abstraction has 193 states and 227 transitions.
[2020-10-12 17:57:42,502 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-12 17:57:42,502 INFO  L276                IsEmpty]: Start isEmpty. Operand 193 states and 227 transitions.
[2020-10-12 17:57:42,505 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 71
[2020-10-12 17:57:42,505 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-12 17:57:42,505 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-12 17:57:42,505 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-12 17:57:42,506 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-12 17:57:42,506 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-12 17:57:42,506 INFO  L82        PathProgramCache]: Analyzing trace with hash 1264318339, now seen corresponding path program 1 times
[2020-10-12 17:57:42,506 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-12 17:57:42,507 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752701523]
[2020-10-12 17:57:42,507 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-12 17:57:42,547 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-10-12 17:57:42,550 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-10-12 17:57:42,550 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-10-12 17:57:42,555 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-12 17:57:42,578 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 05:57:42 BoogieIcfgContainer
[2020-10-12 17:57:42,579 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-10-12 17:57:42,581 INFO  L168              Benchmark]: Toolchain (without parser) took 12531.46 ms. Allocated memory was 144.7 MB in the beginning and 460.3 MB in the end (delta: 315.6 MB). Free memory was 99.7 MB in the beginning and 360.7 MB in the end (delta: -261.0 MB). Peak memory consumption was 54.6 MB. Max. memory is 7.1 GB.
[2020-10-12 17:57:42,582 INFO  L168              Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 144.7 MB. Free memory was 119.2 MB in the beginning and 118.8 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB.
[2020-10-12 17:57:42,583 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 691.29 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 99.7 MB in the beginning and 171.5 MB in the end (delta: -71.8 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB.
[2020-10-12 17:57:42,584 INFO  L168              Benchmark]: Boogie Preprocessor took 125.95 ms. Allocated memory is still 201.9 MB. Free memory was 171.5 MB in the beginning and 167.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB.
[2020-10-12 17:57:42,584 INFO  L168              Benchmark]: RCFGBuilder took 1117.10 ms. Allocated memory was 201.9 MB in the beginning and 231.7 MB in the end (delta: 29.9 MB). Free memory was 167.3 MB in the beginning and 198.4 MB in the end (delta: -31.1 MB). Peak memory consumption was 88.8 MB. Max. memory is 7.1 GB.
[2020-10-12 17:57:42,585 INFO  L168              Benchmark]: TraceAbstraction took 10592.04 ms. Allocated memory was 231.7 MB in the beginning and 460.3 MB in the end (delta: 228.6 MB). Free memory was 198.4 MB in the beginning and 360.7 MB in the end (delta: -162.3 MB). Peak memory consumption was 66.3 MB. Max. memory is 7.1 GB.
[2020-10-12 17:57:42,589 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.28 ms. Allocated memory is still 144.7 MB. Free memory was 119.2 MB in the beginning and 118.8 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 691.29 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 99.7 MB in the beginning and 171.5 MB in the end (delta: -71.8 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 125.95 ms. Allocated memory is still 201.9 MB. Free memory was 171.5 MB in the beginning and 167.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 1117.10 ms. Allocated memory was 201.9 MB in the beginning and 231.7 MB in the end (delta: 29.9 MB). Free memory was 167.3 MB in the beginning and 198.4 MB in the end (delta: -31.1 MB). Peak memory consumption was 88.8 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 10592.04 ms. Allocated memory was 231.7 MB in the beginning and 460.3 MB in the end (delta: 228.6 MB). Free memory was 198.4 MB in the beginning and 360.7 MB in the end (delta: -162.3 MB). Peak memory consumption was 66.3 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 643]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L40]               int cleanupTimeShifts  =    4;
[L184]              int waterLevel  =    1;
[L185]              int methaneLevelCritical  =    0;
[L442]              static struct __ACC__ERR *head  =    (struct __ACC__ERR *)0;
[L652]              int pumpRunning  =    0;
[L653]              int systemActive  =    1;
[L121]              int retValue_acc ;
[L122]              int tmp ;
[L126]  FCALL       select_helpers()
[L127]  FCALL       select_features()
[L128]  CALL, EXPR  valid_product()
[L170]              int retValue_acc ;
[L173]              retValue_acc = 1
[L174]              return (retValue_acc);
[L128]  RET, EXPR   valid_product()
[L128]              tmp = valid_product()
[L130]  COND TRUE   \read(tmp)
[L132]  FCALL       setup()
[L133]  CALL        runTest()
[L112]  CALL        test()
[L832]              int splverifierCounter ;
[L833]              int tmp ;
[L834]              int tmp___0 ;
[L835]              int tmp___1 ;
[L836]              int tmp___2 ;
[L839]              splverifierCounter = 0
[L841]  COND TRUE   1
[L843]  COND TRUE   splverifierCounter < 4
[L849]              tmp = __VERIFIER_nondet_int()
[L851]  COND TRUE   \read(tmp)
[L853]  CALL        waterRise()
[L202]  COND TRUE   waterLevel < 2
[L203]              waterLevel = waterLevel + 1
[L853]  RET         waterRise()
[L859]              tmp___0 = __VERIFIER_nondet_int()
[L861]  COND FALSE  !(\read(tmp___0))
[L869]              tmp___2 = __VERIFIER_nondet_int()
[L871]  COND FALSE  !(\read(tmp___2))
[L877]              tmp___1 = __VERIFIER_nondet_int()
[L879]  COND TRUE   \read(tmp___1)
[L886]  CALL        timeShift()
[L660]  COND FALSE  !(\read(pumpRunning))
[L667]  COND TRUE   \read(systemActive)
[L669]  CALL        processEnvironment()
[L689]              int tmp ;
[L692]  COND FALSE  !(\read(pumpRunning))
[L707]  FCALL       processEnvironment__wrappee__base()
[L669]  RET         processEnvironment()
[L675]  CALL        __utac_acc__Specification3_spec__1()
[L899]              int tmp ;
[L900]              int tmp___0 ;
[L901]              int tmp___1 ;
[L905]  CALL, EXPR  isMethaneLevelCritical()
[L223]              int retValue_acc ;
[L226]              retValue_acc = methaneLevelCritical
[L227]              return (retValue_acc);
[L905]  RET, EXPR   isMethaneLevelCritical()
[L905]              tmp = isMethaneLevelCritical()
[L907]  COND FALSE  !(\read(tmp))
[L911]  CALL, EXPR  getWaterLevel()
[L255]              int retValue_acc ;
[L258]              retValue_acc = waterLevel
[L259]              return (retValue_acc);
[L911]  RET, EXPR   getWaterLevel()
[L911]              tmp___0 = getWaterLevel()
[L913]  COND TRUE   tmp___0 == 2
[L915]  CALL, EXPR  isPumpRunning()
[L759]              int retValue_acc ;
[L762]              retValue_acc = pumpRunning
[L763]              return (retValue_acc);
[L915]  RET, EXPR   isPumpRunning()
[L915]              tmp___1 = isPumpRunning()
[L917]  COND FALSE  !(\read(tmp___1))
[L921]  CALL        __automaton_fail()
[L643]              __VERIFIER_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 39 procedures, 228 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 225 SDtfs, 538 SDslu, 194 SDs, 0 SdLazy, 834 SolverSat, 323 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=193occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 90 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 184 NumberOfCodeBlocks, 184 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 34651 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...