/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product10.cil.c


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


This is Ultimate 0.1.25-177f698
[2020-08-21 15:33:16,772 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-08-21 15:33:16,776 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-08-21 15:33:16,814 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-08-21 15:33:16,815 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-08-21 15:33:16,824 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-08-21 15:33:16,826 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-08-21 15:33:16,830 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-08-21 15:33:16,832 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-08-21 15:33:16,835 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-08-21 15:33:16,836 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-08-21 15:33:16,837 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-08-21 15:33:16,837 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-08-21 15:33:16,840 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-08-21 15:33:16,842 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-08-21 15:33:16,844 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-08-21 15:33:16,845 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-08-21 15:33:16,846 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-08-21 15:33:16,847 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-08-21 15:33:16,857 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-08-21 15:33:16,859 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-08-21 15:33:16,860 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-08-21 15:33:16,862 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-08-21 15:33:16,863 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-08-21 15:33:16,874 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-08-21 15:33:16,875 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-08-21 15:33:16,875 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-08-21 15:33:16,876 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-08-21 15:33:16,877 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-08-21 15:33:16,878 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-08-21 15:33:16,878 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-08-21 15:33:16,879 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-08-21 15:33:16,885 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-08-21 15:33:16,885 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-08-21 15:33:16,886 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-08-21 15:33:16,886 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-08-21 15:33:16,889 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-08-21 15:33:16,889 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-08-21 15:33:16,889 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-08-21 15:33:16,890 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-08-21 15:33:16,893 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-08-21 15:33:16,894 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
[2020-08-21 15:33:16,934 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-08-21 15:33:16,935 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-08-21 15:33:16,937 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-08-21 15:33:16,937 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-08-21 15:33:16,937 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-08-21 15:33:16,938 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-08-21 15:33:16,938 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-08-21 15:33:16,938 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-08-21 15:33:16,939 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-08-21 15:33:16,939 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-08-21 15:33:16,940 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-08-21 15:33:16,940 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-08-21 15:33:16,940 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-08-21 15:33:16,941 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-08-21 15:33:16,941 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-08-21 15:33:16,941 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-08-21 15:33:16,941 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-08-21 15:33:16,942 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-08-21 15:33:16,942 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-08-21 15:33:16,942 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-08-21 15:33:16,943 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-08-21 15:33:16,943 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-21 15:33:16,943 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-08-21 15:33:16,943 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-08-21 15:33:16,943 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-08-21 15:33:16,944 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-08-21 15:33:16,944 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-08-21 15:33:16,944 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-08-21 15:33:16,944 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-08-21 15:33:16,944 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=5000;interpolation-heuristic=SMALLEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true;
[2020-08-21 15:33:17,249 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-08-21 15:33:17,260 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-08-21 15:33:17,265 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-08-21 15:33:17,266 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-08-21 15:33:17,266 INFO  L275        PluginConnector]: CDTParser initialized
[2020-08-21 15:33:17,267 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product10.cil.c
[2020-08-21 15:33:17,326 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57e975b2c/7066424198d648df824b06b27a48bd52/FLAGb1215a336
[2020-08-21 15:33:17,888 INFO  L306              CDTParser]: Found 1 translation units.
[2020-08-21 15:33:17,889 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product10.cil.c
[2020-08-21 15:33:17,902 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57e975b2c/7066424198d648df824b06b27a48bd52/FLAGb1215a336
[2020-08-21 15:33:18,188 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57e975b2c/7066424198d648df824b06b27a48bd52
[2020-08-21 15:33:18,197 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-08-21 15:33:18,199 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-08-21 15:33:18,200 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-08-21 15:33:18,200 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-08-21 15:33:18,203 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-08-21 15:33:18,204 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:33:18" (1/1) ...
[2020-08-21 15:33:18,208 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6afcb89a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:18, skipping insertion in model container
[2020-08-21 15:33:18,209 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:33:18" (1/1) ...
[2020-08-21 15:33:18,215 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-08-21 15:33:18,260 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-08-21 15:33:18,615 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-21 15:33:18,627 INFO  L203         MainTranslator]: Completed pre-run
[2020-08-21 15:33:18,808 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-21 15:33:18,841 INFO  L208         MainTranslator]: Completed translation
[2020-08-21 15:33:18,841 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:18 WrapperNode
[2020-08-21 15:33:18,842 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-08-21 15:33:18,842 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-08-21 15:33:18,843 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-08-21 15:33:18,843 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-08-21 15:33:18,857 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:18" (1/1) ...
[2020-08-21 15:33:18,857 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:18" (1/1) ...
[2020-08-21 15:33:18,877 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:18" (1/1) ...
[2020-08-21 15:33:18,878 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:18" (1/1) ...
[2020-08-21 15:33:18,933 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:18" (1/1) ...
[2020-08-21 15:33:18,944 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:18" (1/1) ...
[2020-08-21 15:33:18,949 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:18" (1/1) ...
[2020-08-21 15:33:18,973 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-08-21 15:33:18,973 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-08-21 15:33:18,974 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-08-21 15:33:18,974 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-08-21 15:33:18,976 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:18" (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
[2020-08-21 15:33:19,058 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-08-21 15:33:19,059 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-08-21 15:33:19,059 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-08-21 15:33:19,060 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-08-21 15:33:19,060 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-08-21 15:33:19,060 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-08-21 15:33:19,060 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-08-21 15:33:19,060 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-08-21 15:33:19,061 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-08-21 15:33:19,062 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-08-21 15:33:19,062 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-08-21 15:33:19,062 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-08-21 15:33:19,062 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-08-21 15:33:19,062 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-08-21 15:33:19,062 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-08-21 15:33:19,063 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-08-21 15:33:19,064 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-08-21 15:33:19,064 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-08-21 15:33:19,064 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-08-21 15:33:19,064 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-08-21 15:33:19,064 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-08-21 15:33:19,064 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-08-21 15:33:19,064 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-08-21 15:33:19,065 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base
[2020-08-21 15:33:19,065 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-08-21 15:33:19,065 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-08-21 15:33:19,066 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-08-21 15:33:19,066 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-08-21 15:33:19,066 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-08-21 15:33:19,066 INFO  L138     BoogieDeclarations]: Found implementation of procedure startSystem
[2020-08-21 15:33:19,067 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1
[2020-08-21 15:33:19,067 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-08-21 15:33:19,067 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-08-21 15:33:19,067 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-08-21 15:33:19,067 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-08-21 15:33:19,067 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-08-21 15:33:19,067 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-08-21 15:33:19,068 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-08-21 15:33:19,068 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-08-21 15:33:19,068 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-08-21 15:33:19,068 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-08-21 15:33:19,068 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-08-21 15:33:19,068 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-08-21 15:33:19,068 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-08-21 15:33:19,068 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-08-21 15:33:19,069 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-08-21 15:33:19,070 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-08-21 15:33:19,070 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-08-21 15:33:19,070 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-08-21 15:33:19,070 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-08-21 15:33:19,070 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-08-21 15:33:19,071 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-08-21 15:33:19,071 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-08-21 15:33:19,071 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-08-21 15:33:19,071 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-08-21 15:33:19,072 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-08-21 15:33:19,072 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-08-21 15:33:19,072 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-08-21 15:33:19,072 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-08-21 15:33:19,072 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-08-21 15:33:19,073 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-08-21 15:33:19,073 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-08-21 15:33:19,073 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-08-21 15:33:19,073 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-08-21 15:33:19,073 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-08-21 15:33:19,073 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-08-21 15:33:19,073 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-08-21 15:33:19,074 INFO  L130     BoogieDeclarations]: Found specification of procedure startSystem
[2020-08-21 15:33:19,074 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-08-21 15:33:19,074 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-08-21 15:33:19,074 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-08-21 15:33:19,075 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-08-21 15:33:19,075 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-08-21 15:33:19,076 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-08-21 15:33:19,076 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-08-21 15:33:19,076 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1
[2020-08-21 15:33:19,077 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-08-21 15:33:19,077 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base
[2020-08-21 15:33:19,077 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-08-21 15:33:19,077 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-08-21 15:33:19,077 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-08-21 15:33:19,078 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-08-21 15:33:19,078 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-08-21 15:33:19,079 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-08-21 15:33:19,079 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-08-21 15:33:19,079 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-08-21 15:33:19,989 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-08-21 15:33:19,989 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-08-21 15:33:19,994 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:33:19 BoogieIcfgContainer
[2020-08-21 15:33:19,995 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-08-21 15:33:19,996 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-08-21 15:33:19,996 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-08-21 15:33:19,999 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-08-21 15:33:20,000 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:33:18" (1/3) ...
[2020-08-21 15:33:20,000 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c1cc1bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:33:20, skipping insertion in model container
[2020-08-21 15:33:20,001 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:18" (2/3) ...
[2020-08-21 15:33:20,001 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c1cc1bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:33:20, skipping insertion in model container
[2020-08-21 15:33:20,001 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:33:19" (3/3) ...
[2020-08-21 15:33:20,003 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec3_product10.cil.c
[2020-08-21 15:33:20,013 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-08-21 15:33:20,021 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-08-21 15:33:20,035 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-08-21 15:33:20,060 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-08-21 15:33:20,061 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-08-21 15:33:20,061 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-08-21 15:33:20,061 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-08-21 15:33:20,061 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-08-21 15:33:20,062 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-08-21 15:33:20,062 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-08-21 15:33:20,062 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-08-21 15:33:20,087 INFO  L276                IsEmpty]: Start isEmpty. Operand 145 states.
[2020-08-21 15:33:20,097 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2020-08-21 15:33:20,097 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 15:33:20,098 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]
[2020-08-21 15:33:20,098 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 15:33:20,103 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 15:33:20,104 INFO  L82        PathProgramCache]: Analyzing trace with hash -1414244218, now seen corresponding path program 1 times
[2020-08-21 15:33:20,110 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 15:33:20,111 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929820017]
[2020-08-21 15:33:20,111 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 15:33:20,359 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:20,723 WARN  L193               SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-21 15:33:20,725 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:33:20,735 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:20,779 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 15:33:20,780 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:20,784 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 15:33:20,785 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:20,791 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 15:33:20,793 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:20,796 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 15:33:20,797 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:20,802 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32
[2020-08-21 15:33:20,803 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:20,806 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2020-08-21 15:33:20,810 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:20,817 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44
[2020-08-21 15:33:20,818 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:20,847 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 15:33:20,848 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929820017]
[2020-08-21 15:33:20,850 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 15:33:20,850 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-08-21 15:33:20,852 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113214457]
[2020-08-21 15:33:20,864 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-08-21 15:33:20,864 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 15:33:20,879 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-08-21 15:33:20,880 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-08-21 15:33:20,882 INFO  L87              Difference]: Start difference. First operand 145 states. Second operand 3 states.
[2020-08-21 15:33:21,773 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 15:33:21,774 INFO  L93              Difference]: Finished difference Result 220 states and 294 transitions.
[2020-08-21 15:33:21,775 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-08-21 15:33:21,777 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 52
[2020-08-21 15:33:21,777 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 15:33:21,792 INFO  L225             Difference]: With dead ends: 220
[2020-08-21 15:33:21,792 INFO  L226             Difference]: Without dead ends: 120
[2020-08-21 15:33:21,797 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-08-21 15:33:21,818 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 120 states.
[2020-08-21 15:33:21,869 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 91.
[2020-08-21 15:33:21,871 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 91 states.
[2020-08-21 15:33:21,872 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 105 transitions.
[2020-08-21 15:33:21,874 INFO  L78                 Accepts]: Start accepts. Automaton has 91 states and 105 transitions. Word has length 52
[2020-08-21 15:33:21,874 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 15:33:21,874 INFO  L479      AbstractCegarLoop]: Abstraction has 91 states and 105 transitions.
[2020-08-21 15:33:21,875 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-08-21 15:33:21,875 INFO  L276                IsEmpty]: Start isEmpty. Operand 91 states and 105 transitions.
[2020-08-21 15:33:21,878 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 54
[2020-08-21 15:33:21,878 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 15:33:21,878 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]
[2020-08-21 15:33:21,879 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-08-21 15:33:21,879 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 15:33:21,879 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 15:33:21,880 INFO  L82        PathProgramCache]: Analyzing trace with hash -803860910, now seen corresponding path program 1 times
[2020-08-21 15:33:21,880 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 15:33:21,880 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349392380]
[2020-08-21 15:33:21,880 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 15:33:21,934 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:22,225 WARN  L193               SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-21 15:33:22,226 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:33:22,231 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:22,251 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 15:33:22,251 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:22,252 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 15:33:22,253 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:22,254 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 15:33:22,254 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:22,256 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 15:33:22,256 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:22,257 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33
[2020-08-21 15:33:22,258 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:22,259 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39
[2020-08-21 15:33:22,260 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:22,261 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2020-08-21 15:33:22,262 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:22,269 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 15:33:22,269 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [349392380]
[2020-08-21 15:33:22,270 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 15:33:22,270 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-08-21 15:33:22,270 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487348305]
[2020-08-21 15:33:22,272 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-08-21 15:33:22,272 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 15:33:22,272 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-08-21 15:33:22,273 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-08-21 15:33:22,273 INFO  L87              Difference]: Start difference. First operand 91 states and 105 transitions. Second operand 4 states.
[2020-08-21 15:33:22,685 WARN  L193               SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-21 15:33:23,271 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 15:33:23,272 INFO  L93              Difference]: Finished difference Result 149 states and 181 transitions.
[2020-08-21 15:33:23,278 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-08-21 15:33:23,278 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 53
[2020-08-21 15:33:23,279 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 15:33:23,282 INFO  L225             Difference]: With dead ends: 149
[2020-08-21 15:33:23,282 INFO  L226             Difference]: Without dead ends: 104
[2020-08-21 15:33:23,284 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
[2020-08-21 15:33:23,284 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 104 states.
[2020-08-21 15:33:23,324 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 82.
[2020-08-21 15:33:23,324 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 82 states.
[2020-08-21 15:33:23,326 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 93 transitions.
[2020-08-21 15:33:23,327 INFO  L78                 Accepts]: Start accepts. Automaton has 82 states and 93 transitions. Word has length 53
[2020-08-21 15:33:23,327 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 15:33:23,327 INFO  L479      AbstractCegarLoop]: Abstraction has 82 states and 93 transitions.
[2020-08-21 15:33:23,327 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-08-21 15:33:23,328 INFO  L276                IsEmpty]: Start isEmpty. Operand 82 states and 93 transitions.
[2020-08-21 15:33:23,338 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 59
[2020-08-21 15:33:23,338 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 15:33:23,339 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-21 15:33:23,339 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-08-21 15:33:23,339 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 15:33:23,341 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 15:33:23,341 INFO  L82        PathProgramCache]: Analyzing trace with hash 9396391, now seen corresponding path program 1 times
[2020-08-21 15:33:23,341 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 15:33:23,341 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570685167]
[2020-08-21 15:33:23,342 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 15:33:23,412 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:23,684 WARN  L193               SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-21 15:33:23,685 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:33:23,702 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:23,730 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 15:33:23,731 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:23,732 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 15:33:23,732 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:23,734 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 15:33:23,735 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:23,763 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 15:33:23,764 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:23,765 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2020-08-21 15:33:23,765 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:23,766 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44
[2020-08-21 15:33:23,767 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:23,768 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50
[2020-08-21 15:33:23,769 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:23,776 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 15:33:23,776 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570685167]
[2020-08-21 15:33:23,776 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 15:33:23,777 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-08-21 15:33:23,777 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500523288]
[2020-08-21 15:33:23,777 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-08-21 15:33:23,778 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 15:33:23,778 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-08-21 15:33:23,778 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2020-08-21 15:33:23,778 INFO  L87              Difference]: Start difference. First operand 82 states and 93 transitions. Second operand 8 states.
[2020-08-21 15:33:24,134 WARN  L193               SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-21 15:33:24,452 WARN  L193               SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 15:33:24,731 WARN  L193               SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 15:33:25,005 WARN  L193               SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 15:33:25,788 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 15:33:25,789 INFO  L93              Difference]: Finished difference Result 162 states and 199 transitions.
[2020-08-21 15:33:25,790 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-08-21 15:33:25,790 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 58
[2020-08-21 15:33:25,791 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 15:33:25,793 INFO  L225             Difference]: With dead ends: 162
[2020-08-21 15:33:25,793 INFO  L226             Difference]: Without dead ends: 104
[2020-08-21 15:33:25,794 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-08-21 15:33:25,795 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 104 states.
[2020-08-21 15:33:25,820 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 82.
[2020-08-21 15:33:25,820 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 82 states.
[2020-08-21 15:33:25,821 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions.
[2020-08-21 15:33:25,821 INFO  L78                 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 58
[2020-08-21 15:33:25,822 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 15:33:25,822 INFO  L479      AbstractCegarLoop]: Abstraction has 82 states and 92 transitions.
[2020-08-21 15:33:25,822 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-08-21 15:33:25,822 INFO  L276                IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions.
[2020-08-21 15:33:25,823 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 62
[2020-08-21 15:33:25,823 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 15:33:25,823 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-21 15:33:25,824 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-08-21 15:33:25,824 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 15:33:25,824 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 15:33:25,824 INFO  L82        PathProgramCache]: Analyzing trace with hash 446188768, now seen corresponding path program 1 times
[2020-08-21 15:33:25,825 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 15:33:25,825 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983902615]
[2020-08-21 15:33:25,825 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 15:33:25,858 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:26,136 WARN  L193               SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-21 15:33:26,138 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:33:26,151 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:26,168 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 15:33:26,169 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:26,171 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 15:33:26,171 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:26,173 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 15:33:26,174 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:26,175 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 15:33:26,176 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:26,177 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2020-08-21 15:33:26,178 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:26,179 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41
[2020-08-21 15:33:26,180 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:26,181 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47
[2020-08-21 15:33:26,182 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:26,217 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53
[2020-08-21 15:33:26,218 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:26,228 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 15:33:26,229 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983902615]
[2020-08-21 15:33:26,229 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 15:33:26,229 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-08-21 15:33:26,230 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087564664]
[2020-08-21 15:33:26,230 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-08-21 15:33:26,230 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 15:33:26,231 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-08-21 15:33:26,232 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2020-08-21 15:33:26,232 INFO  L87              Difference]: Start difference. First operand 82 states and 92 transitions. Second operand 7 states.
[2020-08-21 15:33:26,547 WARN  L193               SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-21 15:33:27,468 WARN  L193               SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 15:33:27,752 WARN  L193               SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 15:33:28,016 WARN  L193               SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 15:33:28,242 WARN  L193               SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-21 15:33:28,536 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 15:33:28,536 INFO  L93              Difference]: Finished difference Result 209 states and 259 transitions.
[2020-08-21 15:33:28,537 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-08-21 15:33:28,537 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 61
[2020-08-21 15:33:28,538 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 15:33:28,539 INFO  L225             Difference]: With dead ends: 209
[2020-08-21 15:33:28,540 INFO  L226             Difference]: Without dead ends: 151
[2020-08-21 15:33:28,541 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132
[2020-08-21 15:33:28,541 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 151 states.
[2020-08-21 15:33:28,581 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 136.
[2020-08-21 15:33:28,581 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 136 states.
[2020-08-21 15:33:28,582 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 158 transitions.
[2020-08-21 15:33:28,583 INFO  L78                 Accepts]: Start accepts. Automaton has 136 states and 158 transitions. Word has length 61
[2020-08-21 15:33:28,583 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 15:33:28,583 INFO  L479      AbstractCegarLoop]: Abstraction has 136 states and 158 transitions.
[2020-08-21 15:33:28,583 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-08-21 15:33:28,584 INFO  L276                IsEmpty]: Start isEmpty. Operand 136 states and 158 transitions.
[2020-08-21 15:33:28,585 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 66
[2020-08-21 15:33:28,585 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 15:33:28,586 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]
[2020-08-21 15:33:28,586 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-08-21 15:33:28,586 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 15:33:28,586 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 15:33:28,586 INFO  L82        PathProgramCache]: Analyzing trace with hash 236169914, now seen corresponding path program 1 times
[2020-08-21 15:33:28,587 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 15:33:28,587 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86537417]
[2020-08-21 15:33:28,587 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 15:33:28,613 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:28,816 WARN  L193               SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-21 15:33:28,817 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:33:28,830 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:28,845 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 15:33:28,846 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:28,847 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 15:33:28,848 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:28,849 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 15:33:28,850 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:28,852 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 15:33:28,853 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:28,866 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35
[2020-08-21 15:33:28,867 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:28,868 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2020-08-21 15:33:28,869 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:28,870 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2020-08-21 15:33:28,870 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:28,871 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2020-08-21 15:33:28,872 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:28,872 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57
[2020-08-21 15:33:28,873 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:33:28,881 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 15:33:28,881 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [86537417]
[2020-08-21 15:33:28,882 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 15:33:28,882 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-08-21 15:33:28,882 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328141637]
[2020-08-21 15:33:28,883 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-08-21 15:33:28,883 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 15:33:28,883 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-08-21 15:33:28,883 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-08-21 15:33:28,884 INFO  L87              Difference]: Start difference. First operand 136 states and 158 transitions. Second operand 5 states.
[2020-08-21 15:33:29,185 WARN  L193               SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-21 15:33:29,720 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 15:33:29,720 INFO  L93              Difference]: Finished difference Result 205 states and 247 transitions.
[2020-08-21 15:33:29,726 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-08-21 15:33:29,726 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 65
[2020-08-21 15:33:29,727 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 15:33:29,728 INFO  L225             Difference]: With dead ends: 205
[2020-08-21 15:33:29,728 INFO  L226             Difference]: Without dead ends: 136
[2020-08-21 15:33:29,729 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
[2020-08-21 15:33:29,730 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 136 states.
[2020-08-21 15:33:29,755 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 123.
[2020-08-21 15:33:29,755 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 123 states.
[2020-08-21 15:33:29,756 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 138 transitions.
[2020-08-21 15:33:29,757 INFO  L78                 Accepts]: Start accepts. Automaton has 123 states and 138 transitions. Word has length 65
[2020-08-21 15:33:29,757 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 15:33:29,757 INFO  L479      AbstractCegarLoop]: Abstraction has 123 states and 138 transitions.
[2020-08-21 15:33:29,757 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-08-21 15:33:29,757 INFO  L276                IsEmpty]: Start isEmpty. Operand 123 states and 138 transitions.
[2020-08-21 15:33:29,758 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 66
[2020-08-21 15:33:29,758 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 15:33:29,759 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]
[2020-08-21 15:33:29,759 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-08-21 15:33:29,759 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 15:33:29,759 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 15:33:29,759 INFO  L82        PathProgramCache]: Analyzing trace with hash 993675046, now seen corresponding path program 1 times
[2020-08-21 15:33:29,760 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 15:33:29,760 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505256475]
[2020-08-21 15:33:29,760 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 15:33:29,816 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-08-21 15:33:29,822 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-08-21 15:33:29,823 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-08-21 15:33:29,827 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-08-21 15:33:29,860 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 03:33:29 BoogieIcfgContainer
[2020-08-21 15:33:29,860 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-08-21 15:33:29,863 INFO  L168              Benchmark]: Toolchain (without parser) took 11663.32 ms. Allocated memory was 148.4 MB in the beginning and 409.5 MB in the end (delta: 261.1 MB). Free memory was 103.8 MB in the beginning and 295.7 MB in the end (delta: -191.8 MB). Peak memory consumption was 69.3 MB. Max. memory is 7.1 GB.
[2020-08-21 15:33:29,865 INFO  L168              Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.4 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB.
[2020-08-21 15:33:29,869 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 642.27 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 103.4 MB in the beginning and 174.8 MB in the end (delta: -71.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB.
[2020-08-21 15:33:29,870 INFO  L168              Benchmark]: Boogie Preprocessor took 130.69 ms. Allocated memory is still 204.5 MB. Free memory was 174.8 MB in the beginning and 170.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB.
[2020-08-21 15:33:29,870 INFO  L168              Benchmark]: RCFGBuilder took 1021.22 ms. Allocated memory was 204.5 MB in the beginning and 235.4 MB in the end (delta: 30.9 MB). Free memory was 170.9 MB in the beginning and 201.1 MB in the end (delta: -30.3 MB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB.
[2020-08-21 15:33:29,871 INFO  L168              Benchmark]: TraceAbstraction took 9864.60 ms. Allocated memory was 235.4 MB in the beginning and 409.5 MB in the end (delta: 174.1 MB). Free memory was 199.4 MB in the beginning and 295.7 MB in the end (delta: -96.2 MB). Peak memory consumption was 77.8 MB. Max. memory is 7.1 GB.
[2020-08-21 15:33:29,875 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.17 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.4 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 642.27 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 103.4 MB in the beginning and 174.8 MB in the end (delta: -71.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 130.69 ms. Allocated memory is still 204.5 MB. Free memory was 174.8 MB in the beginning and 170.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 1021.22 ms. Allocated memory was 204.5 MB in the beginning and 235.4 MB in the end (delta: 30.9 MB). Free memory was 170.9 MB in the beginning and 201.1 MB in the end (delta: -30.3 MB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 9864.60 ms. Allocated memory was 235.4 MB in the beginning and 409.5 MB in the end (delta: 174.1 MB). Free memory was 199.4 MB in the beginning and 295.7 MB in the end (delta: -96.2 MB). Peak memory consumption was 77.8 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 168]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L84]               int waterLevel  =    1;
[L85]               int methaneLevelCritical  =    0;
[L342]              static struct __ACC__ERR *head  =    (struct __ACC__ERR *)0;
[L613]              int pumpRunning  =    0;
[L614]              int systemActive  =    1;
[L781]              int cleanupTimeShifts  =    4;
[L854]              int retValue_acc ;
[L855]              int tmp ;
[L859]  FCALL       select_helpers()
[L860]  FCALL       select_features()
[L861]  CALL, EXPR  valid_product()
[L69]               int retValue_acc ;
[L72]               retValue_acc = 1
[L73]               return (retValue_acc);
[L861]  RET, EXPR   valid_product()
[L861]              tmp = valid_product()
[L863]  COND TRUE   \read(tmp)
[L865]  FCALL       setup()
[L866]  CALL        runTest()
[L848]  CALL        test()
[L543]              int splverifierCounter ;
[L544]              int tmp ;
[L545]              int tmp___0 ;
[L546]              int tmp___1 ;
[L547]              int tmp___2 ;
[L550]              splverifierCounter = 0
[L552]  COND TRUE   1
[L554]  COND TRUE   splverifierCounter < 4
[L560]              tmp = __VERIFIER_nondet_int()
[L562]  COND TRUE   \read(tmp)
[L564]  CALL        waterRise()
[L102]  COND TRUE   waterLevel < 2
[L103]              waterLevel = waterLevel + 1
[L564]  RET         waterRise()
[L570]              tmp___0 = __VERIFIER_nondet_int()
[L572]  COND FALSE  !(\read(tmp___0))
[L580]              tmp___2 = __VERIFIER_nondet_int()
[L582]  COND FALSE  !(\read(tmp___2))
[L588]              tmp___1 = __VERIFIER_nondet_int()
[L590]  COND FALSE  !(\read(tmp___1))
[L597]  CALL        timeShift()
[L621]  COND FALSE  !(\read(pumpRunning))
[L628]  COND TRUE   \read(systemActive)
[L630]  FCALL       processEnvironment()
[L636]  CALL        __utac_acc__Specification3_spec__1()
[L748]              int tmp ;
[L749]              int tmp___0 ;
[L750]              int tmp___1 ;
[L754]  CALL, EXPR  isMethaneLevelCritical()
[L123]              int retValue_acc ;
[L126]              retValue_acc = methaneLevelCritical
[L127]              return (retValue_acc);
[L754]  RET, EXPR   isMethaneLevelCritical()
[L754]              tmp = isMethaneLevelCritical()
[L756]  COND FALSE  !(\read(tmp))
[L760]  CALL, EXPR  getWaterLevel()
[L155]              int retValue_acc ;
[L158]              retValue_acc = waterLevel
[L159]              return (retValue_acc);
[L760]  RET, EXPR   getWaterLevel()
[L760]              tmp___0 = getWaterLevel()
[L762]  COND TRUE   tmp___0 == 2
[L764]  CALL, EXPR  isPumpRunning()
[L694]              int retValue_acc ;
[L697]              retValue_acc = pumpRunning
[L698]              return (retValue_acc);
[L764]  RET, EXPR   isPumpRunning()
[L764]              tmp___1 = isPumpRunning()
[L766]  COND FALSE  !(\read(tmp___1))
[L770]  CALL        __automaton_fail()
[L168]              __VERIFIER_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 36 procedures, 208 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 7.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 386 SDtfs, 474 SDslu, 214 SDs, 0 SdLazy, 1003 SolverSat, 275 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 124 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=145occurred 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: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 101 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 354 NumberOfCodeBlocks, 354 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 284 ConstructedInterpolants, 0 QuantifiedInterpolants, 79940 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...