/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_product59.cil.c


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


This is Ultimate 0.1.25-adbd35c
[2020-10-12 17:59:19,887 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-12 17:59:19,889 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-12 17:59:19,918 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-12 17:59:19,918 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-12 17:59:19,920 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-12 17:59:19,921 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-12 17:59:19,923 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-12 17:59:19,924 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-12 17:59:19,925 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-12 17:59:19,926 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-12 17:59:19,927 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-12 17:59:19,928 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-12 17:59:19,929 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-12 17:59:19,930 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-12 17:59:19,931 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-12 17:59:19,932 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-12 17:59:19,933 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-12 17:59:19,934 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-12 17:59:19,937 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-12 17:59:19,938 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-12 17:59:19,939 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-12 17:59:19,941 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-12 17:59:19,941 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-12 17:59:19,944 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-12 17:59:19,944 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-12 17:59:19,945 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-12 17:59:19,946 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-12 17:59:19,946 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-12 17:59:19,947 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-12 17:59:19,947 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-12 17:59:19,948 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-12 17:59:19,949 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-12 17:59:19,950 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-12 17:59:19,951 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-12 17:59:19,951 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-12 17:59:19,952 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-12 17:59:19,952 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-12 17:59:19,952 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-12 17:59:19,953 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-12 17:59:19,954 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-12 17:59:19,955 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 17:59:19,992 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-12 17:59:19,993 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-12 17:59:19,995 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-12 17:59:19,996 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-12 17:59:19,996 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-12 17:59:19,996 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-12 17:59:19,996 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-12 17:59:19,996 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-12 17:59:19,997 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-12 17:59:19,997 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-12 17:59:19,997 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-12 17:59:19,997 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-12 17:59:19,997 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-12 17:59:19,998 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-12 17:59:19,998 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-12 17:59:19,999 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-12 17:59:19,999 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-12 17:59:19,999 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-12 17:59:20,000 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-12 17:59:20,000 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-12 17:59:20,000 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-12 17:59:20,000 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-12 17:59:20,001 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-12 17:59:20,001 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-12 17:59:20,002 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-12 17:59:20,002 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-12 17:59:20,002 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-12 17:59:20,002 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-12 17:59:20,002 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-12 17:59:20,003 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 17:59:20,378 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-12 17:59:20,391 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-12 17:59:20,395 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-12 17:59:20,398 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-12 17:59:20,399 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-12 17:59:20,400 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product59.cil.c
[2020-10-12 17:59:20,471 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f71e470c/289e7050b29e4033b8fe3371efc70651/FLAG3b206d1f3
[2020-10-12 17:59:21,010 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-12 17:59:21,011 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product59.cil.c
[2020-10-12 17:59:21,025 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f71e470c/289e7050b29e4033b8fe3371efc70651/FLAG3b206d1f3
[2020-10-12 17:59:21,281 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f71e470c/289e7050b29e4033b8fe3371efc70651
[2020-10-12 17:59:21,293 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-12 17:59:21,295 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-12 17:59:21,297 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-12 17:59:21,297 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-12 17:59:21,301 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-12 17:59:21,302 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 05:59:21" (1/1) ...
[2020-10-12 17:59:21,306 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63e54808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:59:21, skipping insertion in model container
[2020-10-12 17:59:21,306 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 05:59:21" (1/1) ...
[2020-10-12 17:59:21,315 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-12 17:59:21,381 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-12 17:59:21,867 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-12 17:59:21,883 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-12 17:59:21,952 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-12 17:59:21,990 INFO  L208         MainTranslator]: Completed translation
[2020-10-12 17:59:21,991 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:59:21 WrapperNode
[2020-10-12 17:59:21,991 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-12 17:59:21,992 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-12 17:59:21,992 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-12 17:59:21,992 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-12 17:59:22,010 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:59:21" (1/1) ...
[2020-10-12 17:59:22,011 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:59:21" (1/1) ...
[2020-10-12 17:59:22,031 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:59:21" (1/1) ...
[2020-10-12 17:59:22,031 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:59:21" (1/1) ...
[2020-10-12 17:59:22,066 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:59:21" (1/1) ...
[2020-10-12 17:59:22,076 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:59:21" (1/1) ...
[2020-10-12 17:59:22,081 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:59:21" (1/1) ...
[2020-10-12 17:59:22,095 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-12 17:59:22,096 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-12 17:59:22,096 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-12 17:59:22,096 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-12 17:59:22,097 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:59:21" (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 17:59:22,173 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-12 17:59:22,173 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-12 17:59:22,173 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-10-12 17:59:22,173 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-10-12 17:59:22,173 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-10-12 17:59:22,173 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-10-12 17:59:22,174 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-10-12 17:59:22,175 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-10-12 17:59:22,175 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-10-12 17:59:22,175 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-10-12 17:59:22,176 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-10-12 17:59:22,176 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-10-12 17:59:22,176 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-10-12 17:59:22,176 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-10-12 17:59:22,176 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-10-12 17:59:22,177 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry
[2020-10-12 17:59:22,177 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry
[2020-10-12 17:59:22,177 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-10-12 17:59:22,178 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-10-12 17:59:22,178 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-10-12 17:59:22,178 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-10-12 17:59:22,178 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-12 17:59:22,178 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-10-12 17:59:22,179 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-10-12 17:59:22,179 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-10-12 17:59:22,179 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-10-12 17:59:22,180 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1
[2020-10-12 17:59:22,180 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-10-12 17:59:22,180 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-10-12 17:59:22,180 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-10-12 17:59:22,180 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base
[2020-10-12 17:59:22,181 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor
[2020-10-12 17:59:22,181 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-10-12 17:59:22,181 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor
[2020-10-12 17:59:22,181 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-10-12 17:59:22,181 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-10-12 17:59:22,182 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-10-12 17:59:22,182 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-10-12 17:59:22,182 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-10-12 17:59:22,182 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterLevel
[2020-10-12 17:59:22,182 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterLevel
[2020-10-12 17:59:22,182 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopSystem
[2020-10-12 17:59:22,183 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-10-12 17:59:22,183 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-12 17:59:22,183 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-10-12 17:59:22,183 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-12 17:59:22,183 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-10-12 17:59:22,183 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-10-12 17:59:22,183 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-10-12 17:59:22,184 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-10-12 17:59:22,184 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-10-12 17:59:22,184 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-10-12 17:59:22,184 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-10-12 17:59:22,185 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-10-12 17:59:22,185 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-12 17:59:22,185 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-10-12 17:59:22,185 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-10-12 17:59:22,185 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-10-12 17:59:22,185 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-10-12 17:59:22,186 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-10-12 17:59:22,186 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-12 17:59:22,186 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-10-12 17:59:22,186 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-10-12 17:59:22,186 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-10-12 17:59:22,187 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-10-12 17:59:22,187 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-10-12 17:59:22,187 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-10-12 17:59:22,187 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-10-12 17:59:22,187 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry
[2020-10-12 17:59:22,188 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry
[2020-10-12 17:59:22,188 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-10-12 17:59:22,188 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-10-12 17:59:22,189 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-10-12 17:59:22,189 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-10-12 17:59:22,190 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-10-12 17:59:22,190 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-10-12 17:59:22,190 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-10-12 17:59:22,190 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-10-12 17:59:22,190 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-10-12 17:59:22,190 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-10-12 17:59:22,190 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-12 17:59:22,191 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-10-12 17:59:22,191 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-10-12 17:59:22,192 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-10-12 17:59:22,192 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1
[2020-10-12 17:59:22,192 INFO  L130     BoogieDeclarations]: Found specification of procedure stopSystem
[2020-10-12 17:59:22,192 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-10-12 17:59:22,192 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-10-12 17:59:22,192 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-10-12 17:59:22,193 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base
[2020-10-12 17:59:22,193 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterLevel
[2020-10-12 17:59:22,193 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor
[2020-10-12 17:59:22,193 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterLevel
[2020-10-12 17:59:22,193 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor
[2020-10-12 17:59:22,193 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-10-12 17:59:22,194 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-12 17:59:22,194 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-12 17:59:22,194 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-12 17:59:23,406 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-12 17:59:23,407 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-10-12 17:59:23,412 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:59:23 BoogieIcfgContainer
[2020-10-12 17:59:23,412 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-12 17:59:23,413 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-12 17:59:23,413 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-12 17:59:23,417 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-12 17:59:23,417 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 05:59:21" (1/3) ...
[2020-10-12 17:59:23,418 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@444dd84b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 05:59:23, skipping insertion in model container
[2020-10-12 17:59:23,418 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:59:21" (2/3) ...
[2020-10-12 17:59:23,418 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@444dd84b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 05:59:23, skipping insertion in model container
[2020-10-12 17:59:23,419 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:59:23" (3/3) ...
[2020-10-12 17:59:23,420 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec3_product59.cil.c
[2020-10-12 17:59:23,431 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-12 17:59:23,439 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-12 17:59:23,453 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-12 17:59:23,478 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-10-12 17:59:23,479 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-10-12 17:59:23,479 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-12 17:59:23,479 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-12 17:59:23,479 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-12 17:59:23,480 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-10-12 17:59:23,480 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-12 17:59:23,480 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-12 17:59:23,503 INFO  L276                IsEmpty]: Start isEmpty. Operand 195 states.
[2020-10-12 17:59:23,514 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2020-10-12 17:59:23,514 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-12 17:59:23,515 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 17:59:23,516 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-12 17:59:23,522 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-12 17:59:23,523 INFO  L82        PathProgramCache]: Analyzing trace with hash 2059475727, now seen corresponding path program 1 times
[2020-10-12 17:59:23,531 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-12 17:59:23,532 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450061930]
[2020-10-12 17:59:23,532 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-12 17:59:23,760 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:59:23,907 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:24,114 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:25,000 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:26,327 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:59:26,328 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 84
[2020-10-12 17:59:26,328 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-12 17:59:26,328 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2562
[2020-10-12 17:59:26,331 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:59:26,331 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 15
[2020-10-12 17:59:26,332 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-12 17:59:26,341 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 67
[2020-10-12 17:59:26,341 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 12
[2020-10-12 17:59:26,903 WARN  L193               SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-10-12 17:59:26,904 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-12 17:59:26,926 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:59:26,941 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:27,049 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:59:27,050 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:59:27,050 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:59:27,050 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 122
[2020-10-12 17:59:27,050 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:59:27,051 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:59:27,051 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:59:27,051 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-12 17:59:27,051 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:59:27,100 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-10-12 17:59:27,101 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:59:27,103 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:27,105 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:59:27,106 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 7
[2020-10-12 17:59:27,106 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:59:27,106 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-10-12 17:59:27,106 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:59:27,107 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:59:27,107 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:59:27,107 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-12 17:59:27,107 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:59:27,109 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-10-12 17:59:27,111 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:59:27,113 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:27,116 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:59:27,116 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 7
[2020-10-12 17:59:27,117 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:59:27,117 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-10-12 17:59:27,117 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:59:27,117 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:59:27,117 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:59:27,118 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-12 17:59:27,118 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-12 17:59:27,120 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-10-12 17:59:27,122 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:59:27,124 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:27,127 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:59:27,128 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:59:27,128 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:59:27,128 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-10-12 17:59:27,128 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:59:27,128 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:59:27,129 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:59:27,129 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-10-12 17:59:27,129 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:59:27,131 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-10-12 17:59:27,133 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:59:27,134 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:27,136 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:59:27,136 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 7
[2020-10-12 17:59:27,136 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:59:27,136 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-12 17:59:27,137 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:59:27,137 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:59:27,137 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:59:27,137 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-12 17:59:27,137 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:59:27,141 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32
[2020-10-12 17:59:27,142 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:59:27,144 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:27,150 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:59:27,150 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:59:27,151 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:59:27,151 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-10-12 17:59:27,151 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:59:27,151 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:59:27,152 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:59:27,152 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-10-12 17:59:27,152 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:59:27,159 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2020-10-12 17:59:27,161 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:59:27,162 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:27,170 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:59:27,170 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:59:27,170 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:59:27,171 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-10-12 17:59:27,171 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:59:27,171 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-12 17:59:27,171 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:59:27,171 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-10-12 17:59:27,172 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:59:27,240 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44
[2020-10-12 17:59:27,242 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:59:27,243 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:27,244 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:59:27,245 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:59:27,245 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:59:27,245 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-12 17:59:27,245 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:59:27,246 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-12 17:59:27,246 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-12 17:59:27,247 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-12 17:59:27,248 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-10-12 17:59:27,271 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 17:59:27,272 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450061930]
[2020-10-12 17:59:27,275 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-12 17:59:27,275 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-10-12 17:59:27,277 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282059797]
[2020-10-12 17:59:27,284 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-12 17:59:27,284 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-12 17:59:27,304 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-12 17:59:27,305 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2020-10-12 17:59:27,308 INFO  L87              Difference]: Start difference. First operand 195 states. Second operand 8 states.
[2020-10-12 17:59:28,080 WARN  L193               SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-10-12 17:59:30,151 WARN  L193               SmtUtils]: Spent 795.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 188
[2020-10-12 17:59:30,778 WARN  L193               SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-10-12 17:59:31,250 WARN  L193               SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-10-12 17:59:31,936 WARN  L193               SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 193
[2020-10-12 17:59:32,424 WARN  L193               SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-10-12 17:59:33,864 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-12 17:59:33,865 INFO  L93              Difference]: Finished difference Result 501 states and 684 transitions.
[2020-10-12 17:59:33,865 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-10-12 17:59:33,867 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 52
[2020-10-12 17:59:33,868 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-12 17:59:33,891 INFO  L225             Difference]: With dead ends: 501
[2020-10-12 17:59:33,891 INFO  L226             Difference]: Without dead ends: 311
[2020-10-12 17:59:33,897 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182
[2020-10-12 17:59:33,917 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 311 states.
[2020-10-12 17:59:34,034 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 264.
[2020-10-12 17:59:34,036 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 264 states.
[2020-10-12 17:59:34,039 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 320 transitions.
[2020-10-12 17:59:34,041 INFO  L78                 Accepts]: Start accepts. Automaton has 264 states and 320 transitions. Word has length 52
[2020-10-12 17:59:34,041 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-12 17:59:34,042 INFO  L479      AbstractCegarLoop]: Abstraction has 264 states and 320 transitions.
[2020-10-12 17:59:34,042 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-12 17:59:34,042 INFO  L276                IsEmpty]: Start isEmpty. Operand 264 states and 320 transitions.
[2020-10-12 17:59:34,047 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 62
[2020-10-12 17:59:34,048 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-12 17:59:34,048 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]
[2020-10-12 17:59:34,048 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-12 17:59:34,049 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-12 17:59:34,049 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-12 17:59:34,049 INFO  L82        PathProgramCache]: Analyzing trace with hash -2018771453, now seen corresponding path program 1 times
[2020-10-12 17:59:34,049 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-12 17:59:34,050 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727492635]
[2020-10-12 17:59:34,050 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-12 17:59:34,086 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:59:34,113 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:34,789 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:59:34,790 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 93
[2020-10-12 17:59:34,790 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:59:34,790 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 702
[2020-10-12 17:59:34,790 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:59:34,791 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-10-12 17:59:34,791 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-12 17:59:34,791 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 56
[2020-10-12 17:59:34,791 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:59:35,032 WARN  L193               SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-10-12 17:59:35,033 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-12 17:59:35,050 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:59:35,063 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:35,134 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:59:35,134 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:59:35,134 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:59:35,135 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 83
[2020-10-12 17:59:35,135 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:59:35,135 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:59:35,135 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:59:35,135 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-12 17:59:35,136 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:59:35,157 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-10-12 17:59:35,158 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:59:35,159 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:35,161 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:59:35,162 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 7
[2020-10-12 17:59:35,162 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:59:35,163 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-12 17:59:35,163 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:59:35,163 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:59:35,163 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:59:35,163 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-12 17:59:35,164 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:59:35,165 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-10-12 17:59:35,170 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:59:35,173 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:35,174 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:59:35,176 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 7
[2020-10-12 17:59:35,176 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:59:35,176 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-12 17:59:35,176 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:59:35,177 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:59:35,177 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:59:35,177 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-12 17:59:35,177 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:59:35,180 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-10-12 17:59:35,181 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:59:35,182 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:35,184 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:59:35,184 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:59:35,185 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:59:35,185 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-12 17:59:35,185 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:59:35,185 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:59:35,185 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:59:35,186 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-10-12 17:59:35,186 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:59:35,188 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-10-12 17:59:35,189 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:59:35,190 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:35,192 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:59:35,192 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 7
[2020-10-12 17:59:35,193 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:59:35,193 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-12 17:59:35,193 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:59:35,193 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:59:35,193 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:59:35,193 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-12 17:59:35,194 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:59:35,203 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28
[2020-10-12 17:59:35,204 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:59:35,205 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:35,209 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:59:35,209 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:59:35,209 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:59:35,210 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-10-12 17:59:35,210 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:59:35,210 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:59:35,211 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:59:35,211 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-10-12 17:59:35,211 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-12 17:59:35,214 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41
[2020-10-12 17:59:35,215 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:59:35,216 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:35,222 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:59:35,222 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:59:35,222 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:59:35,223 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-10-12 17:59:35,223 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:59:35,223 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-12 17:59:35,224 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-12 17:59:35,224 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-12 17:59:35,224 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-12 17:59:35,225 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47
[2020-10-12 17:59:35,226 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:59:35,229 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:35,230 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:59:35,230 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:59:35,230 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:59:35,231 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-10-12 17:59:35,231 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:59:35,231 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-12 17:59:35,232 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-12 17:59:35,232 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-12 17:59:35,232 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-12 17:59:35,234 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53
[2020-10-12 17:59:35,235 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:59:35,236 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:35,239 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:59:35,240 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:59:35,240 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:59:35,240 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-12 17:59:35,240 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:59:35,241 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-12 17:59:35,241 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-12 17:59:35,241 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-12 17:59:35,242 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-12 17:59:35,254 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 17:59:35,255 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727492635]
[2020-10-12 17:59:35,255 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-12 17:59:35,256 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-10-12 17:59:35,256 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926179642]
[2020-10-12 17:59:35,259 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-12 17:59:35,259 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-12 17:59:35,260 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-12 17:59:35,261 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-12 17:59:35,261 INFO  L87              Difference]: Start difference. First operand 264 states and 320 transitions. Second operand 5 states.
[2020-10-12 17:59:35,638 WARN  L193               SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-10-12 17:59:38,164 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-12 17:59:38,164 INFO  L93              Difference]: Finished difference Result 863 states and 1130 transitions.
[2020-10-12 17:59:38,165 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-10-12 17:59:38,165 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 61
[2020-10-12 17:59:38,165 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-12 17:59:38,181 INFO  L225             Difference]: With dead ends: 863
[2020-10-12 17:59:38,181 INFO  L226             Difference]: Without dead ends: 623
[2020-10-12 17:59:38,184 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 17:59:38,187 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 623 states.
[2020-10-12 17:59:38,358 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 495.
[2020-10-12 17:59:38,358 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 495 states.
[2020-10-12 17:59:38,361 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 608 transitions.
[2020-10-12 17:59:38,362 INFO  L78                 Accepts]: Start accepts. Automaton has 495 states and 608 transitions. Word has length 61
[2020-10-12 17:59:38,363 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-12 17:59:38,363 INFO  L479      AbstractCegarLoop]: Abstraction has 495 states and 608 transitions.
[2020-10-12 17:59:38,363 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-12 17:59:38,363 INFO  L276                IsEmpty]: Start isEmpty. Operand 495 states and 608 transitions.
[2020-10-12 17:59:38,368 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2020-10-12 17:59:38,368 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-12 17:59:38,368 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]
[2020-10-12 17:59:38,368 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-12 17:59:38,369 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-12 17:59:38,369 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-12 17:59:38,369 INFO  L82        PathProgramCache]: Analyzing trace with hash 1064344695, now seen corresponding path program 1 times
[2020-10-12 17:59:38,369 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-12 17:59:38,370 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372445312]
[2020-10-12 17:59:38,370 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-12 17:59:38,411 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-10-12 17:59:38,415 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-10-12 17:59:38,415 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-10-12 17:59:38,419 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-12 17:59:38,441 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 05:59:38 BoogieIcfgContainer
[2020-10-12 17:59:38,442 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-10-12 17:59:38,443 INFO  L168              Benchmark]: Toolchain (without parser) took 17148.76 ms. Allocated memory was 138.4 MB in the beginning and 477.1 MB in the end (delta: 338.7 MB). Free memory was 100.6 MB in the beginning and 242.0 MB in the end (delta: -141.3 MB). Peak memory consumption was 197.4 MB. Max. memory is 7.1 GB.
[2020-10-12 17:59:38,444 INFO  L168              Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.5 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB.
[2020-10-12 17:59:38,445 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 694.59 ms. Allocated memory was 138.4 MB in the beginning and 199.8 MB in the end (delta: 61.3 MB). Free memory was 100.6 MB in the beginning and 165.0 MB in the end (delta: -64.4 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB.
[2020-10-12 17:59:38,446 INFO  L168              Benchmark]: Boogie Preprocessor took 103.47 ms. Allocated memory is still 199.8 MB. Free memory was 165.0 MB in the beginning and 161.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB.
[2020-10-12 17:59:38,447 INFO  L168              Benchmark]: RCFGBuilder took 1316.37 ms. Allocated memory was 199.8 MB in the beginning and 230.7 MB in the end (delta: 30.9 MB). Free memory was 161.0 MB in the beginning and 185.6 MB in the end (delta: -24.6 MB). Peak memory consumption was 83.4 MB. Max. memory is 7.1 GB.
[2020-10-12 17:59:38,448 INFO  L168              Benchmark]: TraceAbstraction took 15028.48 ms. Allocated memory was 230.7 MB in the beginning and 477.1 MB in the end (delta: 246.4 MB). Free memory was 185.6 MB in the beginning and 242.0 MB in the end (delta: -56.4 MB). Peak memory consumption was 190.0 MB. Max. memory is 7.1 GB.
[2020-10-12 17:59:38,451 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.24 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.5 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 694.59 ms. Allocated memory was 138.4 MB in the beginning and 199.8 MB in the end (delta: 61.3 MB). Free memory was 100.6 MB in the beginning and 165.0 MB in the end (delta: -64.4 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 103.47 ms. Allocated memory is still 199.8 MB. Free memory was 165.0 MB in the beginning and 161.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 1316.37 ms. Allocated memory was 199.8 MB in the beginning and 230.7 MB in the end (delta: 30.9 MB). Free memory was 161.0 MB in the beginning and 185.6 MB in the end (delta: -24.6 MB). Peak memory consumption was 83.4 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 15028.48 ms. Allocated memory was 230.7 MB in the beginning and 477.1 MB in the end (delta: 246.4 MB). Free memory was 185.6 MB in the beginning and 242.0 MB in the end (delta: -56.4 MB). Peak memory consumption was 190.0 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 694]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L209]              static struct __ACC__ERR *head  =    (struct __ACC__ERR *)0;
[L414]              int waterLevel  =    1;
[L415]              int methaneLevelCritical  =    0;
[L517]              int cleanupTimeShifts  =    4;
[L769]              int pumpRunning  =    0;
[L770]              int systemActive  =    1;
[L596]              int retValue_acc ;
[L597]              int tmp ;
[L601]  FCALL       select_helpers()
[L602]  FCALL       select_features()
[L603]  CALL, EXPR  valid_product()
[L645]              int retValue_acc ;
[L648]              retValue_acc = 1
[L649]              return (retValue_acc);
[L603]  RET, EXPR   valid_product()
[L603]              tmp = valid_product()
[L605]  COND TRUE   \read(tmp)
[L607]  FCALL       setup()
[L608]  CALL        runTest()
[L587]  CALL        test()
[L701]              int splverifierCounter ;
[L702]              int tmp ;
[L703]              int tmp___0 ;
[L704]              int tmp___1 ;
[L705]              int tmp___2 ;
[L708]              splverifierCounter = 0
[L710]  COND TRUE   1
[L712]  COND TRUE   splverifierCounter < 4
[L718]              tmp = __VERIFIER_nondet_int()
[L720]  COND TRUE   \read(tmp)
[L722]  CALL        waterRise()
[L432]  COND TRUE   waterLevel < 2
[L433]              waterLevel = waterLevel + 1
[L722]  RET         waterRise()
[L728]              tmp___0 = __VERIFIER_nondet_int()
[L730]  COND FALSE  !(\read(tmp___0))
[L738]              tmp___2 = __VERIFIER_nondet_int()
[L740]  COND FALSE  !(\read(tmp___2))
[L744]              tmp___1 = __VERIFIER_nondet_int()
[L746]  COND TRUE   \read(tmp___1)
[L748]  CALL        stopSystem()
[L987]  COND FALSE  !(\read(pumpRunning))
[L994]              systemActive = 0
[L748]  RET         stopSystem()
[L755]  CALL        timeShift()
[L776]  COND FALSE  !(\read(pumpRunning))
[L783]  COND FALSE  !(\read(systemActive))
[L791]  CALL        __utac_acc__Specification3_spec__1()
[L657]              int tmp ;
[L658]              int tmp___0 ;
[L659]              int tmp___1 ;
[L663]  CALL, EXPR  isMethaneLevelCritical()
[L453]              int retValue_acc ;
[L456]              retValue_acc = methaneLevelCritical
[L457]              return (retValue_acc);
[L663]  RET, EXPR   isMethaneLevelCritical()
[L663]              tmp = isMethaneLevelCritical()
[L665]  COND FALSE  !(\read(tmp))
[L669]  CALL, EXPR  getWaterLevel()
[L485]              int retValue_acc ;
[L488]              retValue_acc = waterLevel
[L489]              return (retValue_acc);
[L669]  RET, EXPR   getWaterLevel()
[L669]              tmp___0 = getWaterLevel()
[L671]  COND TRUE   tmp___0 == 2
[L673]  CALL, EXPR  isPumpRunning()
[L901]              int retValue_acc ;
[L904]              retValue_acc = pumpRunning
[L905]              return (retValue_acc);
[L673]  RET, EXPR   isPumpRunning()
[L673]              tmp___1 = isPumpRunning()
[L675]  COND FALSE  !(\read(tmp___1))
[L679]  CALL        __automaton_fail()
[L694]              __VERIFIER_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 42 procedures, 251 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 9.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 330 SDtfs, 667 SDslu, 303 SDs, 0 SdLazy, 1481 SolverSat, 382 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=495occurred 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: 0.3s AutomataMinimizationTime, 2 MinimizatonAttempts, 175 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 180 NumberOfCodeBlocks, 180 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 111 ConstructedInterpolants, 0 QuantifiedInterpolants, 35397 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...