/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_product40.cil.c


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


This is Ultimate 0.1.25-adbd35c
[2020-10-12 17:58:03,208 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-12 17:58:03,211 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-12 17:58:03,256 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-12 17:58:03,256 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-12 17:58:03,268 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-12 17:58:03,270 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-12 17:58:03,272 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-12 17:58:03,274 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-12 17:58:03,276 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-12 17:58:03,277 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-12 17:58:03,279 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-12 17:58:03,279 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-12 17:58:03,284 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-12 17:58:03,286 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-12 17:58:03,288 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-12 17:58:03,290 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-12 17:58:03,292 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-12 17:58:03,293 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-12 17:58:03,299 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-12 17:58:03,301 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-12 17:58:03,303 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-12 17:58:03,304 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-12 17:58:03,305 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-12 17:58:03,310 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-12 17:58:03,310 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-12 17:58:03,310 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-12 17:58:03,313 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-12 17:58:03,315 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-12 17:58:03,317 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-12 17:58:03,317 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-12 17:58:03,318 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-12 17:58:03,319 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-12 17:58:03,319 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-12 17:58:03,321 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-12 17:58:03,321 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-12 17:58:03,322 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-12 17:58:03,322 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-12 17:58:03,322 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-12 17:58:03,323 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-12 17:58:03,324 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-12 17:58:03,325 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 17:58:03,368 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-12 17:58:03,368 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-12 17:58:03,370 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-12 17:58:03,370 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-12 17:58:03,370 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-12 17:58:03,371 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-12 17:58:03,371 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-12 17:58:03,371 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-12 17:58:03,372 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-12 17:58:03,372 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-12 17:58:03,373 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-12 17:58:03,373 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-12 17:58:03,373 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-12 17:58:03,374 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-12 17:58:03,374 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-12 17:58:03,374 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-12 17:58:03,374 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-12 17:58:03,375 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-12 17:58:03,375 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-12 17:58:03,375 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-12 17:58:03,375 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-12 17:58:03,375 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-12 17:58:03,375 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-12 17:58:03,376 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-12 17:58:03,376 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-12 17:58:03,376 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-12 17:58:03,376 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-12 17:58:03,376 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-12 17:58:03,377 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-12 17:58:03,377 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 17:58:03,704 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-12 17:58:03,716 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-12 17:58:03,720 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-12 17:58:03,722 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-12 17:58:03,722 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-12 17:58:03,723 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product40.cil.c
[2020-10-12 17:58:03,800 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/27f001895/8213931185be47dd846f73b0556945b3/FLAGac01f3650
[2020-10-12 17:58:04,335 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-12 17:58:04,336 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product40.cil.c
[2020-10-12 17:58:04,347 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/27f001895/8213931185be47dd846f73b0556945b3/FLAGac01f3650
[2020-10-12 17:58:04,629 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/27f001895/8213931185be47dd846f73b0556945b3
[2020-10-12 17:58:04,637 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-12 17:58:04,639 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-12 17:58:04,640 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-12 17:58:04,640 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-12 17:58:04,645 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-12 17:58:04,646 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 05:58:04" (1/1) ...
[2020-10-12 17:58:04,649 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6665a633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:58:04, skipping insertion in model container
[2020-10-12 17:58:04,650 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 05:58:04" (1/1) ...
[2020-10-12 17:58:04,658 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-12 17:58:04,714 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-12 17:58:05,150 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-12 17:58:05,162 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-12 17:58:05,266 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-12 17:58:05,304 INFO  L208         MainTranslator]: Completed translation
[2020-10-12 17:58:05,304 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:58:05 WrapperNode
[2020-10-12 17:58:05,305 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-12 17:58:05,305 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-12 17:58:05,306 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-12 17:58:05,306 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-12 17:58:05,321 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:58:05" (1/1) ...
[2020-10-12 17:58:05,321 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:58:05" (1/1) ...
[2020-10-12 17:58:05,342 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:58:05" (1/1) ...
[2020-10-12 17:58:05,342 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:58:05" (1/1) ...
[2020-10-12 17:58:05,376 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:58:05" (1/1) ...
[2020-10-12 17:58:05,387 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:58:05" (1/1) ...
[2020-10-12 17:58:05,397 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:58:05" (1/1) ...
[2020-10-12 17:58:05,411 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-12 17:58:05,411 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-12 17:58:05,411 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-12 17:58:05,411 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-12 17:58:05,414 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:58:05" (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 17:58:05,472 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-12 17:58:05,472 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-12 17:58:05,473 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-10-12 17:58:05,473 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-10-12 17:58:05,473 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-10-12 17:58:05,473 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-10-12 17:58:05,473 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-10-12 17:58:05,473 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-12 17:58:05,474 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-10-12 17:58:05,474 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-10-12 17:58:05,474 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-10-12 17:58:05,474 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-10-12 17:58:05,474 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1
[2020-10-12 17:58:05,474 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-10-12 17:58:05,475 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-10-12 17:58:05,475 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-10-12 17:58:05,475 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-10-12 17:58:05,475 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-10-12 17:58:05,475 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-10-12 17:58:05,475 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-10-12 17:58:05,476 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry
[2020-10-12 17:58:05,476 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-10-12 17:58:05,476 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base
[2020-10-12 17:58:05,476 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor
[2020-10-12 17:58:05,476 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-10-12 17:58:05,476 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-10-12 17:58:05,477 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-10-12 17:58:05,477 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-10-12 17:58:05,477 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-10-12 17:58:05,477 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-10-12 17:58:05,477 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterLevel
[2020-10-12 17:58:05,477 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopSystem
[2020-10-12 17:58:05,477 INFO  L138     BoogieDeclarations]: Found implementation of procedure startSystem
[2020-10-12 17:58:05,478 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-10-12 17:58:05,478 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-10-12 17:58:05,478 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-10-12 17:58:05,478 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-10-12 17:58:05,478 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-10-12 17:58:05,478 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-10-12 17:58:05,478 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-10-12 17:58:05,479 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-10-12 17:58:05,479 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-12 17:58:05,479 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-10-12 17:58:05,479 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-10-12 17:58:05,479 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-10-12 17:58:05,479 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-10-12 17:58:05,480 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-10-12 17:58:05,480 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-10-12 17:58:05,480 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-10-12 17:58:05,480 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-10-12 17:58:05,480 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-10-12 17:58:05,480 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-10-12 17:58:05,481 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-10-12 17:58:05,481 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-10-12 17:58:05,481 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-10-12 17:58:05,481 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-12 17:58:05,481 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-10-12 17:58:05,481 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-10-12 17:58:05,481 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-10-12 17:58:05,482 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-10-12 17:58:05,482 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-10-12 17:58:05,482 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1
[2020-10-12 17:58:05,482 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-10-12 17:58:05,482 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-10-12 17:58:05,482 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry
[2020-10-12 17:58:05,482 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-12 17:58:05,483 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-10-12 17:58:05,483 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-10-12 17:58:05,483 INFO  L130     BoogieDeclarations]: Found specification of procedure stopSystem
[2020-10-12 17:58:05,483 INFO  L130     BoogieDeclarations]: Found specification of procedure startSystem
[2020-10-12 17:58:05,483 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-10-12 17:58:05,483 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base
[2020-10-12 17:58:05,483 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterLevel
[2020-10-12 17:58:05,484 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor
[2020-10-12 17:58:05,484 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-10-12 17:58:05,484 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-12 17:58:05,484 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-10-12 17:58:05,484 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-10-12 17:58:05,484 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-10-12 17:58:05,485 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-10-12 17:58:05,485 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-10-12 17:58:05,485 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-10-12 17:58:05,485 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-10-12 17:58:05,485 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-10-12 17:58:05,485 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-12 17:58:05,486 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-10-12 17:58:05,486 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-10-12 17:58:05,486 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-10-12 17:58:05,486 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-10-12 17:58:05,486 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-10-12 17:58:05,486 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-10-12 17:58:05,486 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-12 17:58:05,487 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-12 17:58:05,487 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-12 17:58:06,554 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-12 17:58:06,555 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-10-12 17:58:06,564 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:58:06 BoogieIcfgContainer
[2020-10-12 17:58:06,565 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-12 17:58:06,567 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-12 17:58:06,567 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-12 17:58:06,571 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-12 17:58:06,571 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 05:58:04" (1/3) ...
[2020-10-12 17:58:06,572 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b3b64ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 05:58:06, skipping insertion in model container
[2020-10-12 17:58:06,573 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:58:05" (2/3) ...
[2020-10-12 17:58:06,573 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b3b64ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 05:58:06, skipping insertion in model container
[2020-10-12 17:58:06,574 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:58:06" (3/3) ...
[2020-10-12 17:58:06,576 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec3_product40.cil.c
[2020-10-12 17:58:06,587 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-12 17:58:06,597 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-12 17:58:06,611 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-12 17:58:06,639 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-10-12 17:58:06,639 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-10-12 17:58:06,639 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-12 17:58:06,640 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-12 17:58:06,640 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-12 17:58:06,640 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-10-12 17:58:06,640 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-12 17:58:06,640 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-12 17:58:06,661 INFO  L276                IsEmpty]: Start isEmpty. Operand 182 states.
[2020-10-12 17:58:06,673 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2020-10-12 17:58:06,673 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-12 17:58:06,674 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 17:58:06,675 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-12 17:58:06,681 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-12 17:58:06,682 INFO  L82        PathProgramCache]: Analyzing trace with hash 1613949641, now seen corresponding path program 1 times
[2020-10-12 17:58:06,691 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-12 17:58:06,692 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502457564]
[2020-10-12 17:58:06,692 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-12 17:58:06,983 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:58:07,116 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:58:07,249 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:58:08,029 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:58:09,208 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:58:09,209 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 84
[2020-10-12 17:58:09,210 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-12 17:58:09,210 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2219
[2020-10-12 17:58:09,214 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:58:09,215 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 15
[2020-10-12 17:58:09,215 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-12 17:58:09,215 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 67
[2020-10-12 17:58:09,216 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 5
[2020-10-12 17:58:09,749 WARN  L193               SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-10-12 17:58:09,752 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-12 17:58:09,787 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:58:09,804 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:58:09,889 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:58:09,890 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:58:09,890 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:58:09,890 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 101
[2020-10-12 17:58:09,891 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:58:09,891 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:58:09,891 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:58:09,892 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-12 17:58:09,892 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-12 17:58:09,936 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-10-12 17:58:09,937 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:58:09,939 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:58:09,941 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:58:09,942 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 7
[2020-10-12 17:58:09,942 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:58:09,942 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-12 17:58:09,942 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:58:09,942 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:58:09,943 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:58:09,943 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-12 17:58:09,943 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:58:09,945 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-10-12 17:58:09,946 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:58:09,947 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:58:09,949 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:58:09,949 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 7
[2020-10-12 17:58:09,949 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:58:09,949 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-12 17:58:09,950 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:58:09,950 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:58:09,950 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:58:09,950 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-12 17:58:09,951 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:58:09,952 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-10-12 17:58:09,953 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:58:09,955 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:58:09,957 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:58:09,957 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:58:09,957 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:58:09,958 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-12 17:58:09,958 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:58:09,958 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:58:09,958 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:58:09,959 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-10-12 17:58:09,959 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:58:09,960 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-10-12 17:58:09,961 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:58:09,963 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:58:09,964 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:58:09,964 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 7
[2020-10-12 17:58:09,965 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:58:09,965 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-12 17:58:09,965 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:58:09,965 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:58:09,966 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:58:09,966 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-12 17:58:09,966 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:58:09,967 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32
[2020-10-12 17:58:09,969 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:58:09,970 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:58:09,972 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:58:09,973 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:58:09,973 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:58:09,973 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-12 17:58:09,973 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:58:09,973 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:58:09,974 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:58:09,974 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-10-12 17:58:09,974 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:58:09,976 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2020-10-12 17:58:09,977 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:58:09,979 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:58:09,984 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:58:09,984 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:58:09,985 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:58:09,985 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-10-12 17:58:09,985 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:58:09,985 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-12 17:58:09,985 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:58:09,986 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-10-12 17:58:09,986 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:58:10,001 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44
[2020-10-12 17:58:10,002 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:58:10,003 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:58:10,004 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:58:10,004 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:58:10,004 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:58:10,005 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-10-12 17:58:10,005 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:58:10,005 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-12 17:58:10,005 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-12 17:58:10,006 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-12 17:58:10,006 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:58:10,018 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 17:58:10,018 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502457564]
[2020-10-12 17:58:10,021 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-12 17:58:10,021 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-10-12 17:58:10,022 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181985432]
[2020-10-12 17:58:10,027 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-12 17:58:10,028 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-12 17:58:10,042 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-12 17:58:10,043 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2020-10-12 17:58:10,046 INFO  L87              Difference]: Start difference. First operand 182 states. Second operand 8 states.
[2020-10-12 17:58:10,732 WARN  L193               SmtUtils]: Spent 495.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-10-12 17:58:12,254 WARN  L193               SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-10-12 17:58:12,617 WARN  L193               SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-10-12 17:58:12,983 WARN  L193               SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-10-12 17:58:13,448 WARN  L193               SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-10-12 17:58:13,950 WARN  L193               SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-10-12 17:58:15,236 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-12 17:58:15,236 INFO  L93              Difference]: Finished difference Result 459 states and 637 transitions.
[2020-10-12 17:58:15,239 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-10-12 17:58:15,241 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 52
[2020-10-12 17:58:15,242 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-12 17:58:15,258 INFO  L225             Difference]: With dead ends: 459
[2020-10-12 17:58:15,258 INFO  L226             Difference]: Without dead ends: 282
[2020-10-12 17:58:15,264 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182
[2020-10-12 17:58:15,280 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 282 states.
[2020-10-12 17:58:15,382 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 238.
[2020-10-12 17:58:15,384 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 238 states.
[2020-10-12 17:58:15,387 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 290 transitions.
[2020-10-12 17:58:15,389 INFO  L78                 Accepts]: Start accepts. Automaton has 238 states and 290 transitions. Word has length 52
[2020-10-12 17:58:15,389 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-12 17:58:15,389 INFO  L479      AbstractCegarLoop]: Abstraction has 238 states and 290 transitions.
[2020-10-12 17:58:15,389 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-12 17:58:15,390 INFO  L276                IsEmpty]: Start isEmpty. Operand 238 states and 290 transitions.
[2020-10-12 17:58:15,395 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 63
[2020-10-12 17:58:15,395 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-12 17:58:15,395 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-12 17:58:15,396 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-12 17:58:15,396 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-12 17:58:15,396 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-12 17:58:15,396 INFO  L82        PathProgramCache]: Analyzing trace with hash 2112991591, now seen corresponding path program 1 times
[2020-10-12 17:58:15,397 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-12 17:58:15,397 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800103236]
[2020-10-12 17:58:15,397 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-12 17:58:15,428 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:58:15,449 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:58:16,013 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:58:16,014 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 94
[2020-10-12 17:58:16,014 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:58:16,014 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 583
[2020-10-12 17:58:16,015 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:58:16,015 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-10-12 17:58:16,015 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-12 17:58:16,015 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 57
[2020-10-12 17:58:16,016 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-12 17:58:16,280 WARN  L193               SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-10-12 17:58:16,281 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-12 17:58:16,295 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:58:16,305 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:58:16,364 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:58:16,365 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:58:16,365 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:58:16,366 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 68
[2020-10-12 17:58:16,366 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:58:16,367 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:58:16,367 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:58:16,367 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-12 17:58:16,368 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-12 17:58:16,389 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-10-12 17:58:16,390 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:58:16,391 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:58:16,392 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:58:16,393 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 7
[2020-10-12 17:58:16,393 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:58:16,393 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-10-12 17:58:16,394 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:58:16,394 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:58:16,395 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:58:16,395 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-12 17:58:16,395 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-12 17:58:16,397 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-10-12 17:58:16,398 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:58:16,399 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:58:16,400 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:58:16,401 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 7
[2020-10-12 17:58:16,401 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:58:16,402 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-12 17:58:16,402 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:58:16,402 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:58:16,403 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:58:16,403 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-12 17:58:16,403 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-12 17:58:16,405 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-10-12 17:58:16,406 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:58:16,407 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:58:16,410 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:58:16,410 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:58:16,410 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:58:16,411 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-12 17:58:16,411 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:58:16,411 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:58:16,412 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:58:16,412 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-10-12 17:58:16,412 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-12 17:58:16,416 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-10-12 17:58:16,417 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:58:16,418 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:58:16,420 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:58:16,420 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 7
[2020-10-12 17:58:16,420 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:58:16,420 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-12 17:58:16,421 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:58:16,421 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:58:16,422 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:58:16,422 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-12 17:58:16,422 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-12 17:58:16,431 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28
[2020-10-12 17:58:16,432 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:58:16,434 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:58:16,436 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:58:16,436 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:58:16,437 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:58:16,437 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-12 17:58:16,437 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:58:16,438 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:58:16,438 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:58:16,438 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-10-12 17:58:16,439 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-12 17:58:16,441 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42
[2020-10-12 17:58:16,442 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:58:16,443 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:58:16,444 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:58:16,445 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:58:16,445 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:58:16,446 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-10-12 17:58:16,446 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:58:16,446 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-12 17:58:16,447 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-12 17:58:16,447 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-12 17:58:16,447 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-12 17:58:16,449 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48
[2020-10-12 17:58:16,450 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:58:16,451 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:58:16,452 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:58:16,452 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:58:16,453 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:58:16,453 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-10-12 17:58:16,453 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:58:16,454 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-12 17:58:16,454 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-12 17:58:16,454 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-12 17:58:16,454 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:58:16,455 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54
[2020-10-12 17:58:16,456 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:58:16,457 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:58:16,458 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:58:16,458 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:58:16,459 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:58:16,459 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-10-12 17:58:16,459 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:58:16,460 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-12 17:58:16,460 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-12 17:58:16,460 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-12 17:58:16,461 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-12 17:58:16,473 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 17:58:16,474 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800103236]
[2020-10-12 17:58:16,474 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-12 17:58:16,474 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-10-12 17:58:16,474 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664750275]
[2020-10-12 17:58:16,476 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-12 17:58:16,476 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-12 17:58:16,477 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-12 17:58:16,477 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-12 17:58:16,477 INFO  L87              Difference]: Start difference. First operand 238 states and 290 transitions. Second operand 5 states.
[2020-10-12 17:58:16,840 WARN  L193               SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-10-12 17:58:19,114 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-12 17:58:19,114 INFO  L93              Difference]: Finished difference Result 780 states and 1038 transitions.
[2020-10-12 17:58:19,115 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-10-12 17:58:19,115 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 62
[2020-10-12 17:58:19,116 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-12 17:58:19,134 INFO  L225             Difference]: With dead ends: 780
[2020-10-12 17:58:19,134 INFO  L226             Difference]: Without dead ends: 566
[2020-10-12 17:58:19,141 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 17:58:19,142 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 566 states.
[2020-10-12 17:58:19,293 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 435.
[2020-10-12 17:58:19,293 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 435 states.
[2020-10-12 17:58:19,297 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 540 transitions.
[2020-10-12 17:58:19,297 INFO  L78                 Accepts]: Start accepts. Automaton has 435 states and 540 transitions. Word has length 62
[2020-10-12 17:58:19,298 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-12 17:58:19,298 INFO  L479      AbstractCegarLoop]: Abstraction has 435 states and 540 transitions.
[2020-10-12 17:58:19,298 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-12 17:58:19,298 INFO  L276                IsEmpty]: Start isEmpty. Operand 435 states and 540 transitions.
[2020-10-12 17:58:19,305 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2020-10-12 17:58:19,305 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-12 17:58:19,305 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 17:58:19,306 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-12 17:58:19,306 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-12 17:58:19,306 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-12 17:58:19,306 INFO  L82        PathProgramCache]: Analyzing trace with hash 730381356, now seen corresponding path program 1 times
[2020-10-12 17:58:19,306 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-12 17:58:19,307 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182866740]
[2020-10-12 17:58:19,307 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-12 17:58:19,349 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-10-12 17:58:19,352 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-10-12 17:58:19,352 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-10-12 17:58:19,357 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-12 17:58:19,380 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 05:58:19 BoogieIcfgContainer
[2020-10-12 17:58:19,380 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-10-12 17:58:19,382 INFO  L168              Benchmark]: Toolchain (without parser) took 14743.41 ms. Allocated memory was 141.0 MB in the beginning and 509.1 MB in the end (delta: 368.1 MB). Free memory was 102.8 MB in the beginning and 429.4 MB in the end (delta: -326.6 MB). Peak memory consumption was 41.5 MB. Max. memory is 7.1 GB.
[2020-10-12 17:58:19,383 INFO  L168              Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-10-12 17:58:19,384 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 665.26 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.6 MB in the beginning and 170.1 MB in the end (delta: -67.5 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB.
[2020-10-12 17:58:19,385 INFO  L168              Benchmark]: Boogie Preprocessor took 105.53 ms. Allocated memory is still 204.5 MB. Free memory was 170.1 MB in the beginning and 166.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB.
[2020-10-12 17:58:19,386 INFO  L168              Benchmark]: RCFGBuilder took 1153.57 ms. Allocated memory was 204.5 MB in the beginning and 236.5 MB in the end (delta: 32.0 MB). Free memory was 166.2 MB in the beginning and 193.3 MB in the end (delta: -27.1 MB). Peak memory consumption was 79.6 MB. Max. memory is 7.1 GB.
[2020-10-12 17:58:19,387 INFO  L168              Benchmark]: TraceAbstraction took 12813.22 ms. Allocated memory was 236.5 MB in the beginning and 509.1 MB in the end (delta: 272.6 MB). Free memory was 193.3 MB in the beginning and 429.4 MB in the end (delta: -236.1 MB). Peak memory consumption was 36.5 MB. Max. memory is 7.1 GB.
[2020-10-12 17:58:19,391 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.28 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 665.26 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.6 MB in the beginning and 170.1 MB in the end (delta: -67.5 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 105.53 ms. Allocated memory is still 204.5 MB. Free memory was 170.1 MB in the beginning and 166.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 1153.57 ms. Allocated memory was 204.5 MB in the beginning and 236.5 MB in the end (delta: 32.0 MB). Free memory was 166.2 MB in the beginning and 193.3 MB in the end (delta: -27.1 MB). Peak memory consumption was 79.6 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 12813.22 ms. Allocated memory was 236.5 MB in the beginning and 509.1 MB in the end (delta: 272.6 MB). Free memory was 193.3 MB in the beginning and 429.4 MB in the end (delta: -236.1 MB). Peak memory consumption was 36.5 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 221]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L40]               int cleanupTimeShifts  =    4;
[L229]              int waterLevel  =    1;
[L230]              int methaneLevelCritical  =    0;
[L327]              int pumpRunning  =    0;
[L328]              int systemActive  =    1;
[L766]              static struct __ACC__ERR *head  =    (struct __ACC__ERR *)0;
[L121]              int retValue_acc ;
[L122]              int tmp ;
[L126]  FCALL       select_helpers()
[L127]  FCALL       select_features()
[L128]  CALL, EXPR  valid_product()
[L170]              int retValue_acc ;
[L173]              retValue_acc = 1
[L174]              return (retValue_acc);
[L128]  RET, EXPR   valid_product()
[L128]              tmp = valid_product()
[L130]  COND TRUE   \read(tmp)
[L132]  FCALL       setup()
[L133]  CALL        runTest()
[L112]  CALL        test()
[L529]              int splverifierCounter ;
[L530]              int tmp ;
[L531]              int tmp___0 ;
[L532]              int tmp___1 ;
[L533]              int tmp___2 ;
[L536]              splverifierCounter = 0
[L538]  COND TRUE   1
[L540]  COND TRUE   splverifierCounter < 4
[L546]              tmp = __VERIFIER_nondet_int()
[L548]  COND TRUE   \read(tmp)
[L550]  CALL        waterRise()
[L247]  COND TRUE   waterLevel < 2
[L248]              waterLevel = waterLevel + 1
[L550]  RET         waterRise()
[L556]              tmp___0 = __VERIFIER_nondet_int()
[L558]  COND FALSE  !(\read(tmp___0))
[L566]              tmp___2 = __VERIFIER_nondet_int()
[L568]  COND FALSE  !(\read(tmp___2))
[L574]              tmp___1 = __VERIFIER_nondet_int()
[L576]  COND TRUE   \read(tmp___1)
[L578]  CALL        stopSystem()
[L508]  COND FALSE  !(\read(pumpRunning))
[L515]              systemActive = 0
[L578]  RET         stopSystem()
[L585]  CALL        timeShift()
[L334]  COND FALSE  !(\read(pumpRunning))
[L341]  COND FALSE  !(\read(systemActive))
[L349]  CALL        __utac_acc__Specification3_spec__1()
[L184]              int tmp ;
[L185]              int tmp___0 ;
[L186]              int tmp___1 ;
[L190]  CALL, EXPR  isMethaneLevelCritical()
[L268]              int retValue_acc ;
[L271]              retValue_acc = methaneLevelCritical
[L272]              return (retValue_acc);
[L190]  RET, EXPR   isMethaneLevelCritical()
[L190]              tmp = isMethaneLevelCritical()
[L192]  COND FALSE  !(\read(tmp))
[L196]  CALL, EXPR  getWaterLevel()
[L300]              int retValue_acc ;
[L303]              retValue_acc = waterLevel
[L304]              return (retValue_acc);
[L196]  RET, EXPR   getWaterLevel()
[L196]              tmp___0 = getWaterLevel()
[L198]  COND TRUE   tmp___0 == 2
[L200]  CALL, EXPR  isPumpRunning()
[L441]              int retValue_acc ;
[L444]              retValue_acc = pumpRunning
[L445]              return (retValue_acc);
[L200]  RET, EXPR   isPumpRunning()
[L200]              tmp___1 = isPumpRunning()
[L202]  COND FALSE  !(\read(tmp___1))
[L206]  CALL        __automaton_fail()
[L221]              __VERIFIER_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 40 procedures, 238 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 316 SDtfs, 599 SDslu, 330 SDs, 0 SdLazy, 1384 SolverSat, 364 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=435occurred 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, 175 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 181 NumberOfCodeBlocks, 181 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 34651 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...