/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_product19.cil.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 21:21:17,961 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 21:21:17,965 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 21:21:18,010 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 21:21:18,010 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 21:21:18,012 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 21:21:18,013 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 21:21:18,015 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 21:21:18,017 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 21:21:18,019 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 21:21:18,020 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 21:21:18,021 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 21:21:18,022 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 21:21:18,023 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 21:21:18,024 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 21:21:18,026 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 21:21:18,027 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 21:21:18,028 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 21:21:18,030 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 21:21:18,032 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 21:21:18,034 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 21:21:18,036 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 21:21:18,037 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 21:21:18,038 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 21:21:18,041 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 21:21:18,042 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 21:21:18,042 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 21:21:18,043 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 21:21:18,044 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 21:21:18,045 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 21:21:18,045 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 21:21:18,046 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 21:21:18,047 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 21:21:18,048 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 21:21:18,050 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 21:21:18,050 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 21:21:18,051 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 21:21:18,051 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 21:21:18,051 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 21:21:18,052 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 21:21:18,053 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 21:21:18,054 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 21:21:18,081 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 21:21:18,081 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 21:21:18,083 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 21:21:18,083 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 21:21:18,083 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 21:21:18,083 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 21:21:18,084 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 21:21:18,084 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 21:21:18,084 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 21:21:18,084 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 21:21:18,084 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 21:21:18,085 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 21:21:18,085 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 21:21:18,085 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 21:21:18,085 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 21:21:18,085 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 21:21:18,086 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 21:21:18,086 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 21:21:18,086 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 21:21:18,086 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 21:21:18,087 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 21:21:18,087 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 21:21:18,087 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 21:21:18,087 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 21:21:18,087 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 21:21:18,088 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 21:21:18,088 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 21:21:18,088 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 21:21:18,088 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 21:21:18,088 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 21:21:18,575 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 21:21:18,604 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 21:21:18,610 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 21:21:18,614 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 21:21:18,614 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 21:21:18,615 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product19.cil.c
[2020-09-24 21:21:18,700 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c1daf936/e69dcd2acc774cf4b4ae994b21955944/FLAG8b1de79e4
[2020-09-24 21:21:19,306 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 21:21:19,307 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product19.cil.c
[2020-09-24 21:21:19,324 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c1daf936/e69dcd2acc774cf4b4ae994b21955944/FLAG8b1de79e4
[2020-09-24 21:21:19,571 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c1daf936/e69dcd2acc774cf4b4ae994b21955944
[2020-09-24 21:21:19,585 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 21:21:19,592 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 21:21:19,596 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 21:21:19,596 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 21:21:19,600 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 21:21:19,601 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:21:19" (1/1) ...
[2020-09-24 21:21:19,607 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51800d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:19, skipping insertion in model container
[2020-09-24 21:21:19,608 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:21:19" (1/1) ...
[2020-09-24 21:21:19,618 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 21:21:19,692 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 21:21:20,056 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 21:21:20,077 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 21:21:20,289 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 21:21:20,325 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 21:21:20,325 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:20 WrapperNode
[2020-09-24 21:21:20,325 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 21:21:20,326 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 21:21:20,327 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 21:21:20,327 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 21:21:20,345 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:20" (1/1) ...
[2020-09-24 21:21:20,345 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:20" (1/1) ...
[2020-09-24 21:21:20,367 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:20" (1/1) ...
[2020-09-24 21:21:20,368 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:20" (1/1) ...
[2020-09-24 21:21:20,402 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:20" (1/1) ...
[2020-09-24 21:21:20,413 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:20" (1/1) ...
[2020-09-24 21:21:20,418 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:20" (1/1) ...
[2020-09-24 21:21:20,426 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 21:21:20,427 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 21:21:20,427 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 21:21:20,427 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 21:21:20,429 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:20" (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 21:21:20,502 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 21:21:20,502 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 21:21:20,503 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-09-24 21:21:20,503 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-09-24 21:21:20,503 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-09-24 21:21:20,503 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-09-24 21:21:20,503 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-09-24 21:21:20,504 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-09-24 21:21:20,504 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1
[2020-09-24 21:21:20,504 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-09-24 21:21:20,504 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-09-24 21:21:20,504 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-09-24 21:21:20,505 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-09-24 21:21:20,505 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-09-24 21:21:20,505 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-09-24 21:21:20,505 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-09-24 21:21:20,505 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-09-24 21:21:20,506 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-09-24 21:21:20,506 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-09-24 21:21:20,506 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 21:21:20,506 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-09-24 21:21:20,507 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-09-24 21:21:20,507 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-09-24 21:21:20,507 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-09-24 21:21:20,507 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-09-24 21:21:20,507 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-09-24 21:21:20,507 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry
[2020-09-24 21:21:20,508 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-09-24 21:21:20,508 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-09-24 21:21:20,508 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base
[2020-09-24 21:21:20,508 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-09-24 21:21:20,508 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-09-24 21:21:20,508 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-09-24 21:21:20,509 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-09-24 21:21:20,509 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-09-24 21:21:20,509 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-09-24 21:21:20,509 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterLevel
[2020-09-24 21:21:20,509 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopSystem
[2020-09-24 21:21:20,509 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 21:21:20,509 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 21:21:20,510 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-09-24 21:21:20,510 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-09-24 21:21:20,510 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-09-24 21:21:20,510 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-09-24 21:21:20,510 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-09-24 21:21:20,510 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-09-24 21:21:20,511 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-09-24 21:21:20,511 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-09-24 21:21:20,511 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-09-24 21:21:20,511 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1
[2020-09-24 21:21:20,511 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-09-24 21:21:20,512 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-09-24 21:21:20,512 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-09-24 21:21:20,512 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-09-24 21:21:20,512 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-09-24 21:21:20,512 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-09-24 21:21:20,512 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-09-24 21:21:20,513 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-09-24 21:21:20,513 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-09-24 21:21:20,513 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-24 21:21:20,513 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-09-24 21:21:20,513 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-09-24 21:21:20,513 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-09-24 21:21:20,514 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-09-24 21:21:20,514 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-09-24 21:21:20,514 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-24 21:21:20,514 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-09-24 21:21:20,514 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-09-24 21:21:20,514 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-09-24 21:21:20,515 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-09-24 21:21:20,515 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-09-24 21:21:20,515 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-09-24 21:21:20,515 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-09-24 21:21:20,515 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-09-24 21:21:20,515 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-09-24 21:21:20,516 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-09-24 21:21:20,516 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 21:21:20,516 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-09-24 21:21:20,516 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-09-24 21:21:20,516 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry
[2020-09-24 21:21:20,516 INFO  L130     BoogieDeclarations]: Found specification of procedure stopSystem
[2020-09-24 21:21:20,516 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-09-24 21:21:20,517 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-09-24 21:21:20,517 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-09-24 21:21:20,517 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base
[2020-09-24 21:21:20,517 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterLevel
[2020-09-24 21:21:20,517 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-09-24 21:21:20,517 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 21:21:20,518 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-09-24 21:21:20,518 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 21:21:21,667 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 21:21:21,667 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-09-24 21:21:21,674 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:21:21 BoogieIcfgContainer
[2020-09-24 21:21:21,675 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 21:21:21,676 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 21:21:21,676 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 21:21:21,680 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 21:21:21,680 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:21:19" (1/3) ...
[2020-09-24 21:21:21,681 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2245c33e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:21:21, skipping insertion in model container
[2020-09-24 21:21:21,682 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:20" (2/3) ...
[2020-09-24 21:21:21,682 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2245c33e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:21:21, skipping insertion in model container
[2020-09-24 21:21:21,682 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:21:21" (3/3) ...
[2020-09-24 21:21:21,684 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec3_product19.cil.c
[2020-09-24 21:21:21,696 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 21:21:21,707 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 21:21:21,730 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 21:21:21,760 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 21:21:21,760 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 21:21:21,760 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 21:21:21,760 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 21:21:21,760 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 21:21:21,760 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 21:21:21,761 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 21:21:21,761 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 21:21:21,788 INFO  L276                IsEmpty]: Start isEmpty. Operand 298 states.
[2020-09-24 21:21:21,807 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 154
[2020-09-24 21:21:21,807 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 21:21:21,808 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 21:21:21,809 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 21:21:21,815 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 21:21:21,816 INFO  L82        PathProgramCache]: Analyzing trace with hash 2041023672, now seen corresponding path program 1 times
[2020-09-24 21:21:21,826 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 21:21:21,826 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2039698924]
[2020-09-24 21:21:21,826 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 21:21:22,138 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:22,320 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:22,497 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:23,985 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:27,203 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:27,203 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 186
[2020-09-24 21:21:27,203 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-24 21:21:27,204 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5054
[2020-09-24 21:21:27,208 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:27,208 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 16
[2020-09-24 21:21:27,209 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 79
[2020-09-24 21:21:27,209 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 91
[2020-09-24 21:21:27,209 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 5
[2020-09-24 21:21:27,728 WARN  L193               SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-09-24 21:21:27,736 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 21:21:27,798 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:27,842 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:28,080 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:28,080 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 85
[2020-09-24 21:21:28,081 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:28,081 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 280
[2020-09-24 21:21:28,081 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:28,081 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:28,082 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:28,082 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 75
[2020-09-24 21:21:28,082 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:21:28,154 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-09-24 21:21:28,157 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:28,159 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:28,163 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:28,163 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:21:28,163 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:28,163 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-24 21:21:28,164 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:28,164 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:28,164 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:28,164 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 21:21:28,165 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:28,170 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-09-24 21:21:28,171 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:28,173 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:28,180 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:28,180 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:21:28,180 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:28,180 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-24 21:21:28,181 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:28,181 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:28,181 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:28,181 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 21:21:28,182 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:28,184 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-09-24 21:21:28,185 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:28,187 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:28,196 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:28,196 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:28,197 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:28,197 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-09-24 21:21:28,197 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:28,197 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:28,198 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:28,198 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 21:21:28,198 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:21:28,200 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-09-24 21:21:28,202 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:28,204 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:28,208 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:28,208 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:21:28,208 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:28,208 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-24 21:21:28,209 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:28,209 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:28,209 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:28,209 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 21:21:28,210 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:28,213 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2020-09-24 21:21:28,214 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:28,216 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:28,220 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:28,220 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:28,221 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:28,221 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-24 21:21:28,221 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:28,221 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:28,222 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:28,222 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 21:21:28,222 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:28,224 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131
[2020-09-24 21:21:28,225 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:28,228 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:28,238 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:28,239 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:28,239 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:28,239 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 12
[2020-09-24 21:21:28,239 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:28,240 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 21:21:28,240 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:28,240 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 21:21:28,240 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:28,275 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141
[2020-09-24 21:21:28,277 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:28,279 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:28,282 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:28,282 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:28,282 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:28,282 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 21:21:28,283 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:28,283 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:21:28,283 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 21:21:28,283 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:21:28,283 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:28,351 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 21:21:28,352 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2039698924]
[2020-09-24 21:21:28,355 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 21:21:28,355 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-09-24 21:21:28,356 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162458723]
[2020-09-24 21:21:28,366 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-09-24 21:21:28,366 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 21:21:28,383 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-09-24 21:21:28,386 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2020-09-24 21:21:28,388 INFO  L87              Difference]: Start difference. First operand 298 states. Second operand 8 states.
[2020-09-24 21:21:29,007 WARN  L193               SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 21:21:30,594 WARN  L193               SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 21:21:30,993 WARN  L193               SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-09-24 21:21:31,414 WARN  L193               SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 21:21:31,826 WARN  L193               SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-09-24 21:21:32,188 WARN  L193               SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 21:21:32,774 WARN  L193               SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 21:21:33,080 WARN  L193               SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 21:21:34,227 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 21:21:34,228 INFO  L93              Difference]: Finished difference Result 594 states and 737 transitions.
[2020-09-24 21:21:34,230 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-09-24 21:21:34,232 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 153
[2020-09-24 21:21:34,233 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 21:21:34,254 INFO  L225             Difference]: With dead ends: 594
[2020-09-24 21:21:34,255 INFO  L226             Difference]: Without dead ends: 396
[2020-09-24 21:21:34,262 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240
[2020-09-24 21:21:34,281 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 396 states.
[2020-09-24 21:21:34,389 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 350.
[2020-09-24 21:21:34,391 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 350 states.
[2020-09-24 21:21:34,394 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 388 transitions.
[2020-09-24 21:21:34,396 INFO  L78                 Accepts]: Start accepts. Automaton has 350 states and 388 transitions. Word has length 153
[2020-09-24 21:21:34,397 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 21:21:34,397 INFO  L479      AbstractCegarLoop]: Abstraction has 350 states and 388 transitions.
[2020-09-24 21:21:34,397 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-09-24 21:21:34,397 INFO  L276                IsEmpty]: Start isEmpty. Operand 350 states and 388 transitions.
[2020-09-24 21:21:34,403 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 169
[2020-09-24 21:21:34,403 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 21:21:34,404 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]
[2020-09-24 21:21:34,404 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 21:21:34,404 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 21:21:34,404 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 21:21:34,405 INFO  L82        PathProgramCache]: Analyzing trace with hash -1490419539, now seen corresponding path program 1 times
[2020-09-24 21:21:34,405 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 21:21:34,405 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923514829]
[2020-09-24 21:21:34,405 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 21:21:34,463 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:34,534 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:35,761 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:35,762 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 201
[2020-09-24 21:21:35,762 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:35,762 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1295
[2020-09-24 21:21:35,763 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:35,763 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-09-24 21:21:35,763 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 82
[2020-09-24 21:21:35,764 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 73
[2020-09-24 21:21:35,764 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:21:36,107 WARN  L193               SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-09-24 21:21:36,108 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 21:21:36,144 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:36,184 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:36,417 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:36,417 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 85
[2020-09-24 21:21:36,418 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:36,418 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 270
[2020-09-24 21:21:36,418 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:36,418 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:36,418 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:36,419 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 78
[2020-09-24 21:21:36,419 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:36,471 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-09-24 21:21:36,472 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:36,475 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:36,479 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:36,480 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:21:36,480 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:36,481 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-24 21:21:36,481 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:36,481 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:36,482 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:36,482 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 21:21:36,482 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:21:36,484 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-09-24 21:21:36,484 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:36,486 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:36,489 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:36,489 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:21:36,490 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:36,490 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 21:21:36,490 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:36,490 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:36,491 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:36,491 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 21:21:36,491 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:21:36,493 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-09-24 21:21:36,494 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:36,496 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:36,505 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:36,506 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:36,506 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:36,506 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-09-24 21:21:36,507 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:36,507 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:36,507 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:36,507 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 21:21:36,508 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:21:36,510 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-09-24 21:21:36,511 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:36,512 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:36,514 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:36,515 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:21:36,515 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:36,515 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 21:21:36,516 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:36,516 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:36,517 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:36,517 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 21:21:36,517 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:21:36,530 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116
[2020-09-24 21:21:36,532 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:36,534 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:36,539 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:36,540 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-24 21:21:36,540 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:36,540 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-24 21:21:36,541 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:36,541 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:36,541 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:36,541 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-24 21:21:36,542 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:21:36,544 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136
[2020-09-24 21:21:36,545 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:36,547 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:36,548 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:36,548 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:36,548 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:36,549 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 21:21:36,549 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:36,549 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:21:36,549 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 21:21:36,549 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:21:36,550 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:36,553 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146
[2020-09-24 21:21:36,554 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:36,555 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:36,558 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:36,558 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:36,559 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:36,559 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 21:21:36,559 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:36,560 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:21:36,560 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 21:21:36,560 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:21:36,561 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:21:36,562 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156
[2020-09-24 21:21:36,563 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:36,565 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:36,566 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:36,567 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:36,567 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:36,567 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 21:21:36,567 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:36,568 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:21:36,568 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 21:21:36,568 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:21:36,568 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:36,626 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 21:21:36,628 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923514829]
[2020-09-24 21:21:36,629 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 21:21:36,629 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-24 21:21:36,629 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356495716]
[2020-09-24 21:21:36,634 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 21:21:36,634 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 21:21:36,634 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 21:21:36,635 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-09-24 21:21:36,635 INFO  L87              Difference]: Start difference. First operand 350 states and 388 transitions. Second operand 5 states.
[2020-09-24 21:21:37,164 WARN  L193               SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 21:21:39,284 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 21:21:39,285 INFO  L93              Difference]: Finished difference Result 960 states and 1157 transitions.
[2020-09-24 21:21:39,286 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-09-24 21:21:39,286 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 168
[2020-09-24 21:21:39,287 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 21:21:39,295 INFO  L225             Difference]: With dead ends: 960
[2020-09-24 21:21:39,295 INFO  L226             Difference]: Without dead ends: 720
[2020-09-24 21:21:39,299 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2020-09-24 21:21:39,301 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 720 states.
[2020-09-24 21:21:39,415 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 591.
[2020-09-24 21:21:39,415 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 591 states.
[2020-09-24 21:21:39,419 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 673 transitions.
[2020-09-24 21:21:39,420 INFO  L78                 Accepts]: Start accepts. Automaton has 591 states and 673 transitions. Word has length 168
[2020-09-24 21:21:39,420 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 21:21:39,420 INFO  L479      AbstractCegarLoop]: Abstraction has 591 states and 673 transitions.
[2020-09-24 21:21:39,421 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 21:21:39,421 INFO  L276                IsEmpty]: Start isEmpty. Operand 591 states and 673 transitions.
[2020-09-24 21:21:39,425 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 177
[2020-09-24 21:21:39,425 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 21:21:39,426 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, 1]
[2020-09-24 21:21:39,426 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 21:21:39,426 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 21:21:39,426 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 21:21:39,427 INFO  L82        PathProgramCache]: Analyzing trace with hash 466047794, now seen corresponding path program 1 times
[2020-09-24 21:21:39,427 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 21:21:39,427 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899340944]
[2020-09-24 21:21:39,427 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 21:21:39,490 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-24 21:21:39,497 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-24 21:21:39,498 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-09-24 21:21:39,503 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-24 21:21:39,529 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:21:39 BoogieIcfgContainer
[2020-09-24 21:21:39,529 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-24 21:21:39,531 INFO  L168              Benchmark]: Toolchain (without parser) took 19944.00 ms. Allocated memory was 146.8 MB in the beginning and 468.2 MB in the end (delta: 321.4 MB). Free memory was 102.0 MB in the beginning and 258.2 MB in the end (delta: -156.1 MB). Peak memory consumption was 165.3 MB. Max. memory is 7.1 GB.
[2020-09-24 21:21:39,532 INFO  L168              Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 146.8 MB. Free memory was 121.5 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-09-24 21:21:39,533 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 730.26 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 101.4 MB in the beginning and 174.6 MB in the end (delta: -73.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB.
[2020-09-24 21:21:39,534 INFO  L168              Benchmark]: Boogie Preprocessor took 100.32 ms. Allocated memory is still 203.9 MB. Free memory was 173.9 MB in the beginning and 169.8 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB.
[2020-09-24 21:21:39,535 INFO  L168              Benchmark]: RCFGBuilder took 1247.87 ms. Allocated memory was 203.9 MB in the beginning and 236.5 MB in the end (delta: 32.5 MB). Free memory was 169.8 MB in the beginning and 179.6 MB in the end (delta: -9.8 MB). Peak memory consumption was 84.9 MB. Max. memory is 7.1 GB.
[2020-09-24 21:21:39,536 INFO  L168              Benchmark]: TraceAbstraction took 17852.82 ms. Allocated memory was 236.5 MB in the beginning and 468.2 MB in the end (delta: 231.7 MB). Free memory was 179.6 MB in the beginning and 258.2 MB in the end (delta: -78.5 MB). Peak memory consumption was 153.2 MB. Max. memory is 7.1 GB.
[2020-09-24 21:21:39,540 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 146.8 MB. Free memory was 121.5 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 730.26 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 101.4 MB in the beginning and 174.6 MB in the end (delta: -73.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 100.32 ms. Allocated memory is still 203.9 MB. Free memory was 173.9 MB in the beginning and 169.8 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 1247.87 ms. Allocated memory was 203.9 MB in the beginning and 236.5 MB in the end (delta: 32.5 MB). Free memory was 169.8 MB in the beginning and 179.6 MB in the end (delta: -9.8 MB). Peak memory consumption was 84.9 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 17852.82 ms. Allocated memory was 236.5 MB in the beginning and 468.2 MB in the end (delta: 231.7 MB). Free memory was 179.6 MB in the beginning and 258.2 MB in the end (delta: -78.5 MB). Peak memory consumption was 153.2 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L293]              static struct __ACC__ERR *head  =    (struct __ACC__ERR *)0;
[L490]              int cleanupTimeShifts  =    4;
[L594]              int waterLevel  =    1;
[L595]              int methaneLevelCritical  =    0;
[L753]              int pumpRunning  =    0;
[L754]              int systemActive  =    1;
[L568]              int retValue_acc ;
[L569]              int tmp ;
[L573]  FCALL       select_helpers()
[L574]  FCALL       select_features()
[L575]  CALL, EXPR  valid_product()
[L78]               int retValue_acc ;
[L81]               retValue_acc = 1
[L82]               return (retValue_acc);
[L575]  RET, EXPR   valid_product()
[L575]              tmp = valid_product()
[L577]  COND TRUE   \read(tmp)
[L579]  FCALL       setup()
[L580]  CALL        runTest()
[L562]  CALL        test()
[L685]              int splverifierCounter ;
[L686]              int tmp ;
[L687]              int tmp___0 ;
[L688]              int tmp___1 ;
[L689]              int tmp___2 ;
[L692]              splverifierCounter = 0
[L694]  COND TRUE   1
[L696]  COND TRUE   splverifierCounter < 4
[L702]              tmp = __VERIFIER_nondet_int()
[L704]  COND TRUE   \read(tmp)
[L706]  CALL        waterRise()
[L612]  COND TRUE   waterLevel < 2
[L613]              waterLevel = waterLevel + 1
[L706]  RET         waterRise()
[L712]              tmp___0 = __VERIFIER_nondet_int()
[L714]  COND FALSE  !(\read(tmp___0))
[L722]              tmp___2 = __VERIFIER_nondet_int()
[L724]  COND TRUE   \read(tmp___2)
[L739]  CALL        timeShift()
[L760]  COND FALSE  !(\read(pumpRunning))
[L767]  COND TRUE   \read(systemActive)
[L769]  CALL        processEnvironment()
[L789]              int tmp ;
[L792]  COND FALSE  !(\read(pumpRunning))
[L807]  FCALL       processEnvironment__wrappee__base()
[L769]  RET         processEnvironment()
[L775]  CALL        __utac_acc__Specification3_spec__1()
[L91]               int tmp ;
[L92]               int tmp___0 ;
[L93]               int tmp___1 ;
[L97]   CALL, EXPR  isMethaneLevelCritical()
[L633]              int retValue_acc ;
[L636]              retValue_acc = methaneLevelCritical
[L637]              return (retValue_acc);
[L97]   RET, EXPR   isMethaneLevelCritical()
[L97]               tmp = isMethaneLevelCritical()
[L99]   COND FALSE  !(\read(tmp))
[L103]  CALL, EXPR  getWaterLevel()
[L665]              int retValue_acc ;
[L668]              retValue_acc = waterLevel
[L669]              return (retValue_acc);
[L103]  RET, EXPR   getWaterLevel()
[L103]              tmp___0 = getWaterLevel()
[L105]  COND TRUE   tmp___0 == 2
[L107]  CALL, EXPR  isPumpRunning()
[L841]              int retValue_acc ;
[L844]              retValue_acc = pumpRunning
[L845]              return (retValue_acc);
[L107]  RET, EXPR   isPumpRunning()
[L107]              tmp___1 = isPumpRunning()
[L109]  COND FALSE  !(\read(tmp___1))
[L113]  CALL        __automaton_fail()
[L44]               __VERIFIER_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 38 procedures, 615 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 17.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 8.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 483 SDtfs, 842 SDslu, 729 SDs, 0 SdLazy, 1651 SolverSat, 272 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=591occurred 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, 0.3s SatisfiabilityAnalysisTime, 8.2s InterpolantComputationTime, 497 NumberOfCodeBlocks, 497 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 319 ConstructedInterpolants, 0 QuantifiedInterpolants, 137322 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...