/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 SingleStatement --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=LOWLEXORDER --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_product12.cil.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 21:21:01,299 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 21:21:01,303 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 21:21:01,358 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 21:21:01,359 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 21:21:01,371 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 21:21:01,372 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 21:21:01,376 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 21:21:01,379 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 21:21:01,382 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 21:21:01,383 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 21:21:01,386 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 21:21:01,386 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 21:21:01,390 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 21:21:01,391 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 21:21:01,396 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 21:21:01,398 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 21:21:01,399 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 21:21:01,401 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 21:21:01,410 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 21:21:01,412 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 21:21:01,413 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 21:21:01,415 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 21:21:01,416 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 21:21:01,420 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 21:21:01,420 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 21:21:01,420 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 21:21:01,424 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 21:21:01,424 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 21:21:01,425 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 21:21:01,426 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 21:21:01,427 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 21:21:01,427 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 21:21:01,428 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 21:21:01,430 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 21:21:01,430 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 21:21:01,431 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 21:21:01,431 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 21:21:01,431 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 21:21:01,432 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 21:21:01,434 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 21:21:01,435 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
[2020-09-24 21:21:01,484 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 21:21:01,485 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 21:21:01,487 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 21:21:01,487 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 21:21:01,488 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 21:21:01,488 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 21:21:01,488 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 21:21:01,489 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 21:21:01,489 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 21:21:01,489 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 21:21:01,490 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 21:21:01,490 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 21:21:01,491 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 21:21:01,491 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 21:21:01,491 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 21:21:01,492 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 21:21:01,492 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 21:21:01,492 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 21:21:01,492 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 21:21:01,493 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 21:21:01,493 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 21:21:01,493 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 21:21:01,493 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 21:21:01,493 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 21:21:01,494 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 21:21:01,494 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 21:21:01,494 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 21:21:01,494 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 21:21:01,494 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 21:21:01,495 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 -> SingleStatement
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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=true;
[2020-09-24 21:21:01,946 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 21:21:01,964 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 21:21:01,969 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 21:21:01,971 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 21:21:01,972 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 21:21:01,973 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product12.cil.c
[2020-09-24 21:21:02,069 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd90e09eb/77d08e7bcc39475681c20c8c2381651d/FLAG84b6f48d7
[2020-09-24 21:21:02,717 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 21:21:02,717 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product12.cil.c
[2020-09-24 21:21:02,740 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd90e09eb/77d08e7bcc39475681c20c8c2381651d/FLAG84b6f48d7
[2020-09-24 21:21:02,947 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd90e09eb/77d08e7bcc39475681c20c8c2381651d
[2020-09-24 21:21:02,965 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 21:21:02,971 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 21:21:02,974 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 21:21:02,975 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 21:21:02,979 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 21:21:02,980 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:21:02" (1/1) ...
[2020-09-24 21:21:02,985 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11cafb76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:02, skipping insertion in model container
[2020-09-24 21:21:02,985 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:21:02" (1/1) ...
[2020-09-24 21:21:02,998 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 21:21:03,056 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 21:21:03,442 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 21:21:03,458 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 21:21:03,692 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 21:21:03,727 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 21:21:03,727 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:03 WrapperNode
[2020-09-24 21:21:03,728 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 21:21:03,729 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 21:21:03,729 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 21:21:03,729 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 21:21:03,747 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:03" (1/1) ...
[2020-09-24 21:21:03,748 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:03" (1/1) ...
[2020-09-24 21:21:03,769 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:03" (1/1) ...
[2020-09-24 21:21:03,770 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:03" (1/1) ...
[2020-09-24 21:21:03,812 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:03" (1/1) ...
[2020-09-24 21:21:03,824 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:03" (1/1) ...
[2020-09-24 21:21:03,830 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:03" (1/1) ...
[2020-09-24 21:21:03,837 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 21:21:03,838 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 21:21:03,838 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 21:21:03,838 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 21:21:03,840 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:03" (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
[2020-09-24 21:21:03,927 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 21:21:03,928 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 21:21:03,928 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-09-24 21:21:03,928 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1
[2020-09-24 21:21:03,929 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-09-24 21:21:03,929 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-09-24 21:21:03,929 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-09-24 21:21:03,929 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base
[2020-09-24 21:21:03,930 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-09-24 21:21:03,930 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-09-24 21:21:03,930 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-09-24 21:21:03,931 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-09-24 21:21:03,931 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-09-24 21:21:03,931 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopSystem
[2020-09-24 21:21:03,931 INFO  L138     BoogieDeclarations]: Found implementation of procedure startSystem
[2020-09-24 21:21:03,932 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-09-24 21:21:03,932 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-09-24 21:21:03,932 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-09-24 21:21:03,933 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-09-24 21:21:03,933 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-09-24 21:21:03,934 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-09-24 21:21:03,934 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-09-24 21:21:03,934 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-09-24 21:21:03,935 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-09-24 21:21:03,935 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-09-24 21:21:03,935 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-09-24 21:21:03,936 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-09-24 21:21:03,936 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-09-24 21:21:03,936 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-09-24 21:21:03,936 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-09-24 21:21:03,936 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-09-24 21:21:03,936 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-09-24 21:21:03,938 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-09-24 21:21:03,938 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-09-24 21:21:03,938 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-09-24 21:21:03,938 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 21:21:03,938 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-09-24 21:21:03,939 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 21:21:03,939 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 21:21:03,939 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-09-24 21:21:03,939 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-09-24 21:21:03,939 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-09-24 21:21:03,939 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-09-24 21:21:03,940 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-09-24 21:21:03,940 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1
[2020-09-24 21:21:03,940 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-09-24 21:21:03,940 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-09-24 21:21:03,940 INFO  L130     BoogieDeclarations]: Found specification of procedure startSystem
[2020-09-24 21:21:03,940 INFO  L130     BoogieDeclarations]: Found specification of procedure stopSystem
[2020-09-24 21:21:03,940 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-09-24 21:21:03,941 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-09-24 21:21:03,941 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-09-24 21:21:03,941 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-09-24 21:21:03,941 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-09-24 21:21:03,941 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-09-24 21:21:03,941 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-09-24 21:21:03,942 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-09-24 21:21:03,942 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-09-24 21:21:03,942 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base
[2020-09-24 21:21:03,942 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-09-24 21:21:03,942 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-24 21:21:03,942 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-09-24 21:21:03,943 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-09-24 21:21:03,943 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-09-24 21:21:03,943 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-09-24 21:21:03,943 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-09-24 21:21:03,943 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-09-24 21:21:03,943 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-09-24 21:21:03,944 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-09-24 21:21:03,944 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-09-24 21:21:03,944 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-09-24 21:21:03,944 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-09-24 21:21:03,944 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-09-24 21:21:03,944 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-09-24 21:21:03,945 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-24 21:21:03,945 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-09-24 21:21:03,945 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-09-24 21:21:03,945 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-09-24 21:21:03,945 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-09-24 21:21:03,945 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-09-24 21:21:03,946 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-09-24 21:21:03,946 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-09-24 21:21:03,946 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-09-24 21:21:03,946 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-09-24 21:21:03,946 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 21:21:03,946 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 21:21:03,947 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-09-24 21:21:03,947 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 21:21:05,070 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 21:21:05,070 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-09-24 21:21:05,077 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:21:05 BoogieIcfgContainer
[2020-09-24 21:21:05,077 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 21:21:05,079 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 21:21:05,079 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 21:21:05,082 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 21:21:05,083 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:21:02" (1/3) ...
[2020-09-24 21:21:05,084 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e55495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:21:05, skipping insertion in model container
[2020-09-24 21:21:05,084 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:03" (2/3) ...
[2020-09-24 21:21:05,084 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e55495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:21:05, skipping insertion in model container
[2020-09-24 21:21:05,084 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:21:05" (3/3) ...
[2020-09-24 21:21:05,087 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec3_product12.cil.c
[2020-09-24 21:21:05,098 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 21:21:05,110 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 21:21:05,133 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 21:21:05,166 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 21:21:05,166 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 21:21:05,166 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 21:21:05,166 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 21:21:05,166 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 21:21:05,167 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 21:21:05,167 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 21:21:05,167 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 21:21:05,192 INFO  L276                IsEmpty]: Start isEmpty. Operand 281 states.
[2020-09-24 21:21:05,208 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 154
[2020-09-24 21:21:05,208 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 21:21:05,209 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 21:21:05,210 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 21:21:05,218 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 21:21:05,218 INFO  L82        PathProgramCache]: Analyzing trace with hash 459580304, now seen corresponding path program 1 times
[2020-09-24 21:21:05,233 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 21:21:05,234 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65215136]
[2020-09-24 21:21:05,234 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 21:21:05,559 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:05,709 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:05,924 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:07,537 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:10,608 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:10,608 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 186
[2020-09-24 21:21:10,608 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-24 21:21:10,609 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5040
[2020-09-24 21:21:10,612 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:10,612 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-09-24 21:21:10,612 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 78
[2020-09-24 21:21:10,613 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 62
[2020-09-24 21:21:10,613 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-09-24 21:21:11,065 WARN  L193               SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-09-24 21:21:11,068 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 21:21:11,109 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:11,148 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:11,402 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:11,402 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 85
[2020-09-24 21:21:11,403 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:11,403 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 292
[2020-09-24 21:21:11,412 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:11,413 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:11,413 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:11,413 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 74
[2020-09-24 21:21:11,413 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:11,538 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-09-24 21:21:11,541 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:11,544 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:11,548 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:11,548 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:21:11,549 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:11,549 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-24 21:21:11,549 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:11,549 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:11,549 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:11,550 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 21:21:11,550 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:11,552 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-09-24 21:21:11,553 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:11,554 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:11,558 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:11,558 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:21:11,558 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:11,558 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 21:21:11,558 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:11,559 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:11,559 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:11,559 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 21:21:11,559 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:11,562 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-09-24 21:21:11,565 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:11,568 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:11,576 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:11,576 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:11,576 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:11,576 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-09-24 21:21:11,577 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:11,577 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:11,577 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:11,577 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 21:21:11,577 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:11,580 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-09-24 21:21:11,581 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:11,583 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:11,586 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:11,586 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:21:11,586 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:11,586 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 21:21:11,587 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:11,587 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:11,587 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:11,587 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 21:21:11,587 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:11,589 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2020-09-24 21:21:11,590 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:11,595 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:11,596 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:11,597 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:11,597 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:11,597 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 21:21:11,597 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:11,598 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:21:11,598 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 21:21:11,598 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:21:11,598 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:11,600 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131
[2020-09-24 21:21:11,601 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:11,602 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:11,604 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:11,604 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:11,604 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:11,605 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 21:21:11,605 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:11,605 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:21:11,605 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 21:21:11,605 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:21:11,606 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:11,608 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141
[2020-09-24 21:21:11,611 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:11,613 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:11,614 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:11,615 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:11,615 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:11,615 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 21:21:11,615 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:11,615 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:21:11,616 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 21:21:11,616 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:21:11,616 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:11,653 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 21:21:11,654 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65215136]
[2020-09-24 21:21:11,656 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 21:21:11,656 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-24 21:21:11,657 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362480704]
[2020-09-24 21:21:11,668 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-24 21:21:11,668 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 21:21:11,687 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-24 21:21:11,688 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-24 21:21:11,691 INFO  L87              Difference]: Start difference. First operand 281 states. Second operand 4 states.
[2020-09-24 21:21:12,350 WARN  L193               SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 21:21:14,088 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 21:21:14,088 INFO  L93              Difference]: Finished difference Result 526 states and 642 transitions.
[2020-09-24 21:21:14,089 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-09-24 21:21:14,090 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 153
[2020-09-24 21:21:14,092 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 21:21:14,111 INFO  L225             Difference]: With dead ends: 526
[2020-09-24 21:21:14,111 INFO  L226             Difference]: Without dead ends: 372
[2020-09-24 21:21:14,116 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-09-24 21:21:14,137 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 372 states.
[2020-09-24 21:21:14,241 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 302.
[2020-09-24 21:21:14,242 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 302 states.
[2020-09-24 21:21:14,245 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 331 transitions.
[2020-09-24 21:21:14,247 INFO  L78                 Accepts]: Start accepts. Automaton has 302 states and 331 transitions. Word has length 153
[2020-09-24 21:21:14,248 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 21:21:14,248 INFO  L479      AbstractCegarLoop]: Abstraction has 302 states and 331 transitions.
[2020-09-24 21:21:14,249 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-24 21:21:14,249 INFO  L276                IsEmpty]: Start isEmpty. Operand 302 states and 331 transitions.
[2020-09-24 21:21:14,254 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 158
[2020-09-24 21:21:14,254 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 21:21:14,255 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 21:21:14,255 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 21:21:14,255 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 21:21:14,256 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 21:21:14,256 INFO  L82        PathProgramCache]: Analyzing trace with hash 1061124255, now seen corresponding path program 1 times
[2020-09-24 21:21:14,256 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 21:21:14,256 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549697042]
[2020-09-24 21:21:14,257 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 21:21:14,310 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:14,362 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:14,566 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:17,486 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:17,487 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 192
[2020-09-24 21:21:17,487 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 21:21:17,487 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3173
[2020-09-24 21:21:17,488 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:17,488 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 16
[2020-09-24 21:21:17,488 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 79
[2020-09-24 21:21:17,489 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 97
[2020-09-24 21:21:17,489 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:21:17,830 WARN  L193               SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-09-24 21:21:17,832 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 21:21:17,864 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:17,900 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:18,110 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:18,111 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 85
[2020-09-24 21:21:18,111 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:18,111 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 245
[2020-09-24 21:21:18,112 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:18,112 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:18,112 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:18,112 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 75
[2020-09-24 21:21:18,112 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:18,171 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-09-24 21:21:18,172 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:18,173 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:18,176 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:18,176 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:21:18,177 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:18,177 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 21:21:18,177 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:18,177 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:18,177 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:18,178 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 21:21:18,178 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:18,179 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-09-24 21:21:18,180 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:18,181 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:18,183 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:18,184 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:21:18,184 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:18,184 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 21:21:18,184 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:18,184 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:18,185 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:18,185 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 21:21:18,185 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:18,186 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-09-24 21:21:18,188 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:18,189 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:18,195 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:18,195 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:18,195 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:18,195 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-24 21:21:18,196 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:18,196 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:18,196 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:18,196 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 21:21:18,196 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:18,198 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-09-24 21:21:18,199 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:18,200 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:18,203 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:18,203 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:21:18,203 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:18,204 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 21:21:18,204 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:18,204 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:18,204 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:18,204 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 21:21:18,205 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:18,206 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118
[2020-09-24 21:21:18,207 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:18,208 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:18,210 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:18,210 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:21:18,210 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:18,211 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 21:21:18,211 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:18,211 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:18,211 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:18,211 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 21:21:18,212 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:18,213 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125
[2020-09-24 21:21:18,214 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:18,216 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:18,218 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:18,219 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:18,219 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:18,219 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 21:21:18,219 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:18,219 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:18,220 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:18,220 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 21:21:18,220 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:18,222 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135
[2020-09-24 21:21:18,223 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:18,225 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:18,232 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:18,232 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:18,232 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:18,233 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-09-24 21:21:18,233 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:18,233 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 21:21:18,233 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:18,233 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 21:21:18,234 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:18,306 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145
[2020-09-24 21:21:18,307 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:18,309 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:18,312 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:18,312 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:18,314 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:18,315 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 21:21:18,315 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:18,315 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:21:18,315 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 21:21:18,318 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:21:18,318 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-24 21:21:18,378 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 21:21:18,378 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549697042]
[2020-09-24 21:21:18,379 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 21:21:18,379 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2020-09-24 21:21:18,379 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454733270]
[2020-09-24 21:21:18,382 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-09-24 21:21:18,383 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 21:21:18,383 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-09-24 21:21:18,383 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72
[2020-09-24 21:21:18,383 INFO  L87              Difference]: Start difference. First operand 302 states and 331 transitions. Second operand 9 states.
[2020-09-24 21:21:18,966 WARN  L193               SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 21:21:20,742 WARN  L193               SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 188
[2020-09-24 21:21:21,420 WARN  L193               SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 190
[2020-09-24 21:21:21,802 WARN  L193               SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-09-24 21:21:22,158 WARN  L193               SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 193
[2020-09-24 21:21:22,516 WARN  L193               SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-09-24 21:21:22,990 WARN  L193               SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 193
[2020-09-24 21:21:23,357 WARN  L193               SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 198
[2020-09-24 21:21:23,740 WARN  L193               SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 21:21:24,495 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 21:21:24,496 INFO  L93              Difference]: Finished difference Result 743 states and 906 transitions.
[2020-09-24 21:21:24,497 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-09-24 21:21:24,498 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 157
[2020-09-24 21:21:24,499 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 21:21:24,506 INFO  L225             Difference]: With dead ends: 743
[2020-09-24 21:21:24,506 INFO  L226             Difference]: Without dead ends: 518
[2020-09-24 21:21:24,510 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306
[2020-09-24 21:21:24,512 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 518 states.
[2020-09-24 21:21:24,599 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 463.
[2020-09-24 21:21:24,599 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 463 states.
[2020-09-24 21:21:24,602 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 521 transitions.
[2020-09-24 21:21:24,603 INFO  L78                 Accepts]: Start accepts. Automaton has 463 states and 521 transitions. Word has length 157
[2020-09-24 21:21:24,603 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 21:21:24,605 INFO  L479      AbstractCegarLoop]: Abstraction has 463 states and 521 transitions.
[2020-09-24 21:21:24,605 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-09-24 21:21:24,605 INFO  L276                IsEmpty]: Start isEmpty. Operand 463 states and 521 transitions.
[2020-09-24 21:21:24,618 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 176
[2020-09-24 21:21:24,618 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 21:21:24,618 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 21:21:24,619 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 21:21:24,619 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 21:21:24,619 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 21:21:24,619 INFO  L82        PathProgramCache]: Analyzing trace with hash 232069563, now seen corresponding path program 1 times
[2020-09-24 21:21:24,621 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 21:21:24,621 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147543169]
[2020-09-24 21:21:24,621 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 21:21:24,682 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-24 21:21:24,690 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-24 21:21:24,691 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-09-24 21:21:24,697 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-24 21:21:24,733 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:21:24 BoogieIcfgContainer
[2020-09-24 21:21:24,733 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-24 21:21:24,736 INFO  L168              Benchmark]: Toolchain (without parser) took 21768.65 ms. Allocated memory was 146.3 MB in the beginning and 500.2 MB in the end (delta: 353.9 MB). Free memory was 101.7 MB in the beginning and 376.2 MB in the end (delta: -274.5 MB). Peak memory consumption was 79.4 MB. Max. memory is 7.1 GB.
[2020-09-24 21:21:24,737 INFO  L168              Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 146.3 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-24 21:21:24,738 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 753.76 ms. Allocated memory was 146.3 MB in the beginning and 205.5 MB in the end (delta: 59.2 MB). Free memory was 101.0 MB in the beginning and 175.9 MB in the end (delta: -74.9 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB.
[2020-09-24 21:21:24,739 INFO  L168              Benchmark]: Boogie Preprocessor took 109.18 ms. Allocated memory is still 205.5 MB. Free memory was 175.9 MB in the beginning and 171.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB.
[2020-09-24 21:21:24,741 INFO  L168              Benchmark]: RCFGBuilder took 1239.30 ms. Allocated memory was 205.5 MB in the beginning and 237.0 MB in the end (delta: 31.5 MB). Free memory was 171.7 MB in the beginning and 184.4 MB in the end (delta: -12.6 MB). Peak memory consumption was 86.7 MB. Max. memory is 7.1 GB.
[2020-09-24 21:21:24,748 INFO  L168              Benchmark]: TraceAbstraction took 19654.32 ms. Allocated memory was 237.0 MB in the beginning and 500.2 MB in the end (delta: 263.2 MB). Free memory was 184.4 MB in the beginning and 376.2 MB in the end (delta: -191.8 MB). Peak memory consumption was 71.4 MB. Max. memory is 7.1 GB.
[2020-09-24 21:21:24,758 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.25 ms. Allocated memory is still 146.3 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 753.76 ms. Allocated memory was 146.3 MB in the beginning and 205.5 MB in the end (delta: 59.2 MB). Free memory was 101.0 MB in the beginning and 175.9 MB in the end (delta: -74.9 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 109.18 ms. Allocated memory is still 205.5 MB. Free memory was 175.9 MB in the beginning and 171.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 1239.30 ms. Allocated memory was 205.5 MB in the beginning and 237.0 MB in the end (delta: 31.5 MB). Free memory was 171.7 MB in the beginning and 184.4 MB in the end (delta: -12.6 MB). Peak memory consumption was 86.7 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 19654.32 ms. Allocated memory was 237.0 MB in the beginning and 500.2 MB in the end (delta: 263.2 MB). Free memory was 184.4 MB in the beginning and 376.2 MB in the end (delta: -191.8 MB). Peak memory consumption was 71.4 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 890]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L158]              int pumpRunning  =    0;
[L159]              int systemActive  =    1;
[L306]              int waterLevel  =    1;
[L307]              int methaneLevelCritical  =    0;
[L593]              static struct __ACC__ERR *head  =    (struct __ACC__ERR *)0;
[L790]              int cleanupTimeShifts  =    4;
[L863]              int retValue_acc ;
[L864]              int tmp ;
[L868]  FCALL       select_helpers()
[L869]  FCALL       select_features()
[L870]  CALL, EXPR  valid_product()
[L415]              int retValue_acc ;
[L418]              retValue_acc = 1
[L419]              return (retValue_acc);
[L870]  RET, EXPR   valid_product()
[L870]              tmp = valid_product()
[L872]  COND TRUE   \read(tmp)
[L874]  FCALL       setup()
[L875]  CALL        runTest()
[L857]  CALL        test()
[L85]               int splverifierCounter ;
[L86]               int tmp ;
[L87]               int tmp___0 ;
[L88]               int tmp___1 ;
[L89]               int tmp___2 ;
[L92]               splverifierCounter = 0
[L94]   COND TRUE   1
[L96]   COND TRUE   splverifierCounter < 4
[L102]              tmp = __VERIFIER_nondet_int()
[L104]  COND TRUE   \read(tmp)
[L106]  CALL        waterRise()
[L324]  COND TRUE   waterLevel < 2
[L325]              waterLevel = waterLevel + 1
[L106]  RET         waterRise()
[L112]              tmp___0 = __VERIFIER_nondet_int()
[L114]  COND FALSE  !(\read(tmp___0))
[L122]              tmp___2 = __VERIFIER_nondet_int()
[L124]  COND TRUE   \read(tmp___2)
[L126]  CALL        startSystem()
[L301]              systemActive = 1
[L126]  RET         startSystem()
[L141]  CALL        timeShift()
[L165]  COND FALSE  !(\read(pumpRunning))
[L172]  COND TRUE   \read(systemActive)
[L174]  FCALL       processEnvironment()
[L180]  CALL        __utac_acc__Specification3_spec__1()
[L45]               int tmp ;
[L46]               int tmp___0 ;
[L47]               int tmp___1 ;
[L51]   CALL, EXPR  isMethaneLevelCritical()
[L345]              int retValue_acc ;
[L348]              retValue_acc = methaneLevelCritical
[L349]              return (retValue_acc);
[L51]   RET, EXPR   isMethaneLevelCritical()
[L51]               tmp = isMethaneLevelCritical()
[L53]   COND FALSE  !(\read(tmp))
[L57]   CALL, EXPR  getWaterLevel()
[L377]              int retValue_acc ;
[L380]              retValue_acc = waterLevel
[L381]              return (retValue_acc);
[L57]   RET, EXPR   getWaterLevel()
[L57]               tmp___0 = getWaterLevel()
[L59]   COND TRUE   tmp___0 == 2
[L61]   CALL, EXPR  isPumpRunning()
[L238]              int retValue_acc ;
[L241]              retValue_acc = pumpRunning
[L242]              return (retValue_acc);
[L61]   RET, EXPR   isPumpRunning()
[L61]               tmp___1 = isPumpRunning()
[L63]   COND FALSE  !(\read(tmp___1))
[L67]   CALL        __automaton_fail()
[L890]              __VERIFIER_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 37 procedures, 597 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 19.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 8.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 427 SDtfs, 623 SDslu, 799 SDs, 0 SdLazy, 1329 SolverSat, 214 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=463occurred 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: 0.2s AutomataMinimizationTime, 2 MinimizatonAttempts, 125 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 10.0s InterpolantComputationTime, 485 NumberOfCodeBlocks, 485 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 308 ConstructedInterpolants, 0 QuantifiedInterpolants, 141300 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...