/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product12.cil.c


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


This is Ultimate 0.1.25-177f698
[2020-08-21 21:11:50,459 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-08-21 21:11:50,462 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-08-21 21:11:50,502 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-08-21 21:11:50,502 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-08-21 21:11:50,514 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-08-21 21:11:50,515 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-08-21 21:11:50,519 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-08-21 21:11:50,520 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-08-21 21:11:50,522 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-08-21 21:11:50,523 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-08-21 21:11:50,525 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-08-21 21:11:50,525 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-08-21 21:11:50,530 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-08-21 21:11:50,532 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-08-21 21:11:50,534 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-08-21 21:11:50,535 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-08-21 21:11:50,537 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-08-21 21:11:50,539 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-08-21 21:11:50,546 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-08-21 21:11:50,548 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-08-21 21:11:50,549 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-08-21 21:11:50,550 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-08-21 21:11:50,550 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-08-21 21:11:50,553 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-08-21 21:11:50,553 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-08-21 21:11:50,553 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-08-21 21:11:50,554 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-08-21 21:11:50,554 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-08-21 21:11:50,555 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-08-21 21:11:50,555 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-08-21 21:11:50,556 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-08-21 21:11:50,557 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-08-21 21:11:50,558 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-08-21 21:11:50,558 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-08-21 21:11:50,559 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-08-21 21:11:50,559 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-08-21 21:11:50,559 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-08-21 21:11:50,560 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-08-21 21:11:50,560 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-08-21 21:11:50,561 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-08-21 21:11:50,562 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-08-21 21:11:50,583 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-08-21 21:11:50,583 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-08-21 21:11:50,585 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-08-21 21:11:50,585 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-08-21 21:11:50,585 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-08-21 21:11:50,585 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-08-21 21:11:50,586 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-08-21 21:11:50,586 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-08-21 21:11:50,586 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-08-21 21:11:50,586 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-08-21 21:11:50,586 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-08-21 21:11:50,587 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-08-21 21:11:50,587 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-08-21 21:11:50,587 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-08-21 21:11:50,587 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-08-21 21:11:50,587 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-08-21 21:11:50,587 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-08-21 21:11:50,588 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-08-21 21:11:50,588 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-08-21 21:11:50,588 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-08-21 21:11:50,588 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-08-21 21:11:50,588 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-21 21:11:50,589 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-08-21 21:11:50,589 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-08-21 21:11:50,589 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-08-21 21:11:50,589 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-08-21 21:11:50,589 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-08-21 21:11:50,590 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-08-21 21:11:50,590 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-08-21 21:11:50,590 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;
[2020-08-21 21:11:50,892 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-08-21 21:11:50,903 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-08-21 21:11:50,907 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-08-21 21:11:50,908 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-08-21 21:11:50,909 INFO  L275        PluginConnector]: CDTParser initialized
[2020-08-21 21:11:50,910 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product12.cil.c
[2020-08-21 21:11:50,979 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0e6c9488/2f159743686d4d2283b890398ab0e8f5/FLAG7f72ac0c5
[2020-08-21 21:11:51,485 INFO  L306              CDTParser]: Found 1 translation units.
[2020-08-21 21:11:51,490 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product12.cil.c
[2020-08-21 21:11:51,514 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0e6c9488/2f159743686d4d2283b890398ab0e8f5/FLAG7f72ac0c5
[2020-08-21 21:11:51,733 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0e6c9488/2f159743686d4d2283b890398ab0e8f5
[2020-08-21 21:11:51,741 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-08-21 21:11:51,742 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-08-21 21:11:51,744 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-08-21 21:11:51,744 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-08-21 21:11:51,747 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-08-21 21:11:51,748 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:11:51" (1/1) ...
[2020-08-21 21:11:51,751 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8dc2f97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:11:51, skipping insertion in model container
[2020-08-21 21:11:51,751 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:11:51" (1/1) ...
[2020-08-21 21:11:51,759 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-08-21 21:11:51,806 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-08-21 21:11:52,098 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-21 21:11:52,114 INFO  L203         MainTranslator]: Completed pre-run
[2020-08-21 21:11:52,305 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-21 21:11:52,340 INFO  L208         MainTranslator]: Completed translation
[2020-08-21 21:11:52,340 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:11:52 WrapperNode
[2020-08-21 21:11:52,341 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-08-21 21:11:52,341 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-08-21 21:11:52,342 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-08-21 21:11:52,342 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-08-21 21:11:52,354 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:11:52" (1/1) ...
[2020-08-21 21:11:52,354 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:11:52" (1/1) ...
[2020-08-21 21:11:52,384 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:11:52" (1/1) ...
[2020-08-21 21:11:52,387 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:11:52" (1/1) ...
[2020-08-21 21:11:52,425 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:11:52" (1/1) ...
[2020-08-21 21:11:52,435 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:11:52" (1/1) ...
[2020-08-21 21:11:52,441 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:11:52" (1/1) ...
[2020-08-21 21:11:52,448 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-08-21 21:11:52,449 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-08-21 21:11:52,449 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-08-21 21:11:52,449 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-08-21 21:11:52,450 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:11:52" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-21 21:11:52,509 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-08-21 21:11:52,509 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-08-21 21:11:52,509 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-08-21 21:11:52,509 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1
[2020-08-21 21:11:52,509 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-08-21 21:11:52,510 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-08-21 21:11:52,510 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-08-21 21:11:52,510 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base
[2020-08-21 21:11:52,510 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-08-21 21:11:52,510 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-08-21 21:11:52,510 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-08-21 21:11:52,511 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-08-21 21:11:52,511 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-08-21 21:11:52,511 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopSystem
[2020-08-21 21:11:52,511 INFO  L138     BoogieDeclarations]: Found implementation of procedure startSystem
[2020-08-21 21:11:52,511 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-08-21 21:11:52,511 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-08-21 21:11:52,512 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-08-21 21:11:52,512 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-08-21 21:11:52,512 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-08-21 21:11:52,512 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-08-21 21:11:52,512 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-08-21 21:11:52,512 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-08-21 21:11:52,512 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-08-21 21:11:52,513 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-08-21 21:11:52,513 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-08-21 21:11:52,513 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-08-21 21:11:52,513 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-08-21 21:11:52,513 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-08-21 21:11:52,513 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-08-21 21:11:52,514 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-08-21 21:11:52,514 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-08-21 21:11:52,514 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-08-21 21:11:52,514 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-08-21 21:11:52,514 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-08-21 21:11:52,514 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-08-21 21:11:52,515 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-08-21 21:11:52,515 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-08-21 21:11:52,515 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-08-21 21:11:52,515 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-08-21 21:11:52,515 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-08-21 21:11:52,515 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-08-21 21:11:52,516 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-08-21 21:11:52,516 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-08-21 21:11:52,516 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1
[2020-08-21 21:11:52,516 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-08-21 21:11:52,516 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-08-21 21:11:52,516 INFO  L130     BoogieDeclarations]: Found specification of procedure startSystem
[2020-08-21 21:11:52,516 INFO  L130     BoogieDeclarations]: Found specification of procedure stopSystem
[2020-08-21 21:11:52,517 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-08-21 21:11:52,517 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-08-21 21:11:52,517 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-08-21 21:11:52,517 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-08-21 21:11:52,517 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-08-21 21:11:52,517 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-08-21 21:11:52,517 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-08-21 21:11:52,517 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-08-21 21:11:52,518 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-08-21 21:11:52,518 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base
[2020-08-21 21:11:52,518 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-08-21 21:11:52,518 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-08-21 21:11:52,518 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-08-21 21:11:52,518 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-08-21 21:11:52,518 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-08-21 21:11:52,519 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-08-21 21:11:52,519 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-08-21 21:11:52,519 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-08-21 21:11:52,519 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-08-21 21:11:52,519 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-08-21 21:11:52,519 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-08-21 21:11:52,520 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-08-21 21:11:52,520 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-08-21 21:11:52,520 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-08-21 21:11:52,520 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-08-21 21:11:52,520 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-08-21 21:11:52,520 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-08-21 21:11:52,520 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-08-21 21:11:52,521 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-08-21 21:11:52,521 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-08-21 21:11:52,521 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-08-21 21:11:52,521 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-08-21 21:11:52,521 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-08-21 21:11:52,521 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-08-21 21:11:52,522 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-08-21 21:11:52,522 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-08-21 21:11:52,522 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-08-21 21:11:52,522 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-08-21 21:11:52,522 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-08-21 21:11:53,565 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-08-21 21:11:53,565 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-08-21 21:11:53,571 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:11:53 BoogieIcfgContainer
[2020-08-21 21:11:53,571 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-08-21 21:11:53,572 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-08-21 21:11:53,573 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-08-21 21:11:53,576 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-08-21 21:11:53,576 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 09:11:51" (1/3) ...
[2020-08-21 21:11:53,577 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c54cf2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:11:53, skipping insertion in model container
[2020-08-21 21:11:53,577 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:11:52" (2/3) ...
[2020-08-21 21:11:53,578 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c54cf2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:11:53, skipping insertion in model container
[2020-08-21 21:11:53,578 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:11:53" (3/3) ...
[2020-08-21 21:11:53,580 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec3_product12.cil.c
[2020-08-21 21:11:53,591 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-08-21 21:11:53,599 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-08-21 21:11:53,613 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-08-21 21:11:53,638 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-08-21 21:11:53,638 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-08-21 21:11:53,639 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-08-21 21:11:53,639 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-08-21 21:11:53,639 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-08-21 21:11:53,640 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-08-21 21:11:53,640 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-08-21 21:11:53,640 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-08-21 21:11:53,663 INFO  L276                IsEmpty]: Start isEmpty. Operand 154 states.
[2020-08-21 21:11:53,673 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2020-08-21 21:11:53,674 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 21:11:53,675 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-21 21:11:53,675 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 21:11:53,682 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 21:11:53,682 INFO  L82        PathProgramCache]: Analyzing trace with hash 1715921214, now seen corresponding path program 1 times
[2020-08-21 21:11:53,692 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 21:11:53,693 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460096997]
[2020-08-21 21:11:53,693 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 21:11:53,920 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:11:54,330 WARN  L193               SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-21 21:11:54,331 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 21:11:54,343 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:11:54,417 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 21:11:54,419 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:11:54,422 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 21:11:54,426 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:11:54,429 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 21:11:54,431 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:11:54,434 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 21:11:54,435 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:11:54,440 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32
[2020-08-21 21:11:54,442 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:11:54,444 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2020-08-21 21:11:54,445 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:11:54,455 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44
[2020-08-21 21:11:54,457 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:11:54,479 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 21:11:54,480 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460096997]
[2020-08-21 21:11:54,482 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 21:11:54,488 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-08-21 21:11:54,490 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686485708]
[2020-08-21 21:11:54,496 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-08-21 21:11:54,497 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 21:11:54,511 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-08-21 21:11:54,512 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-08-21 21:11:54,514 INFO  L87              Difference]: Start difference. First operand 154 states. Second operand 3 states.
[2020-08-21 21:11:55,538 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 21:11:55,539 INFO  L93              Difference]: Finished difference Result 240 states and 317 transitions.
[2020-08-21 21:11:55,539 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-08-21 21:11:55,541 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 52
[2020-08-21 21:11:55,542 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 21:11:55,557 INFO  L225             Difference]: With dead ends: 240
[2020-08-21 21:11:55,557 INFO  L226             Difference]: Without dead ends: 131
[2020-08-21 21:11:55,562 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-08-21 21:11:55,585 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 131 states.
[2020-08-21 21:11:55,649 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 100.
[2020-08-21 21:11:55,651 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 100 states.
[2020-08-21 21:11:55,659 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions.
[2020-08-21 21:11:55,661 INFO  L78                 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 52
[2020-08-21 21:11:55,661 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 21:11:55,661 INFO  L479      AbstractCegarLoop]: Abstraction has 100 states and 115 transitions.
[2020-08-21 21:11:55,662 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-08-21 21:11:55,663 INFO  L276                IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions.
[2020-08-21 21:11:55,668 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 54
[2020-08-21 21:11:55,668 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 21:11:55,669 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-21 21:11:55,669 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-08-21 21:11:55,669 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 21:11:55,669 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 21:11:55,670 INFO  L82        PathProgramCache]: Analyzing trace with hash 1789709038, now seen corresponding path program 1 times
[2020-08-21 21:11:55,670 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 21:11:55,670 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538391362]
[2020-08-21 21:11:55,670 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 21:11:55,764 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:11:56,083 WARN  L193               SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-21 21:11:56,084 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 21:11:56,089 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:11:56,108 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 21:11:56,109 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:11:56,110 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 21:11:56,110 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:11:56,111 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 21:11:56,112 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:11:56,113 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 21:11:56,114 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:11:56,115 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33
[2020-08-21 21:11:56,115 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:11:56,116 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39
[2020-08-21 21:11:56,117 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:11:56,118 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2020-08-21 21:11:56,119 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:11:56,126 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 21:11:56,126 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538391362]
[2020-08-21 21:11:56,126 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 21:11:56,127 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-08-21 21:11:56,127 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979141121]
[2020-08-21 21:11:56,128 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-08-21 21:11:56,129 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 21:11:56,129 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-08-21 21:11:56,129 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-08-21 21:11:56,129 INFO  L87              Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 4 states.
[2020-08-21 21:11:56,675 WARN  L193               SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-21 21:11:57,251 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 21:11:57,251 INFO  L93              Difference]: Finished difference Result 160 states and 194 transitions.
[2020-08-21 21:11:57,252 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-08-21 21:11:57,252 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 53
[2020-08-21 21:11:57,253 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 21:11:57,256 INFO  L225             Difference]: With dead ends: 160
[2020-08-21 21:11:57,256 INFO  L226             Difference]: Without dead ends: 115
[2020-08-21 21:11:57,259 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-08-21 21:11:57,260 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 115 states.
[2020-08-21 21:11:57,297 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 91.
[2020-08-21 21:11:57,297 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 91 states.
[2020-08-21 21:11:57,298 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 103 transitions.
[2020-08-21 21:11:57,299 INFO  L78                 Accepts]: Start accepts. Automaton has 91 states and 103 transitions. Word has length 53
[2020-08-21 21:11:57,299 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 21:11:57,299 INFO  L479      AbstractCegarLoop]: Abstraction has 91 states and 103 transitions.
[2020-08-21 21:11:57,299 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-08-21 21:11:57,299 INFO  L276                IsEmpty]: Start isEmpty. Operand 91 states and 103 transitions.
[2020-08-21 21:11:57,310 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 59
[2020-08-21 21:11:57,310 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 21:11:57,310 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-21 21:11:57,311 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-08-21 21:11:57,311 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 21:11:57,311 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 21:11:57,311 INFO  L82        PathProgramCache]: Analyzing trace with hash -1277285199, now seen corresponding path program 1 times
[2020-08-21 21:11:57,312 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 21:11:57,312 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058736884]
[2020-08-21 21:11:57,312 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 21:11:57,369 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:11:57,655 WARN  L193               SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-21 21:11:57,657 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 21:11:57,672 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:11:57,701 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 21:11:57,703 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:11:57,704 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 21:11:57,705 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:11:57,706 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 21:11:57,707 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:11:57,721 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 21:11:57,722 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:11:57,724 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2020-08-21 21:11:57,724 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:11:57,725 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44
[2020-08-21 21:11:57,726 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:11:57,727 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50
[2020-08-21 21:11:57,728 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:11:57,737 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 21:11:57,737 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058736884]
[2020-08-21 21:11:57,737 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 21:11:57,738 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-08-21 21:11:57,738 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099828475]
[2020-08-21 21:11:57,738 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-08-21 21:11:57,739 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 21:11:57,739 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-08-21 21:11:57,739 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2020-08-21 21:11:57,740 INFO  L87              Difference]: Start difference. First operand 91 states and 103 transitions. Second operand 8 states.
[2020-08-21 21:11:58,164 WARN  L193               SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-21 21:11:58,469 WARN  L193               SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 21:11:58,725 WARN  L193               SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 21:11:58,984 WARN  L193               SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 21:11:59,675 WARN  L193               SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-21 21:12:00,750 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 21:12:00,750 INFO  L93              Difference]: Finished difference Result 326 states and 401 transitions.
[2020-08-21 21:12:00,751 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-08-21 21:12:00,751 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 58
[2020-08-21 21:12:00,752 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 21:12:00,757 INFO  L225             Difference]: With dead ends: 326
[2020-08-21 21:12:00,757 INFO  L226             Difference]: Without dead ends: 259
[2020-08-21 21:12:00,759 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156
[2020-08-21 21:12:00,760 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 259 states.
[2020-08-21 21:12:00,830 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 190.
[2020-08-21 21:12:00,831 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 190 states.
[2020-08-21 21:12:00,832 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 225 transitions.
[2020-08-21 21:12:00,833 INFO  L78                 Accepts]: Start accepts. Automaton has 190 states and 225 transitions. Word has length 58
[2020-08-21 21:12:00,833 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 21:12:00,833 INFO  L479      AbstractCegarLoop]: Abstraction has 190 states and 225 transitions.
[2020-08-21 21:12:00,833 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-08-21 21:12:00,833 INFO  L276                IsEmpty]: Start isEmpty. Operand 190 states and 225 transitions.
[2020-08-21 21:12:00,834 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 62
[2020-08-21 21:12:00,835 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 21:12:00,835 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-21 21:12:00,835 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-08-21 21:12:00,835 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 21:12:00,835 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 21:12:00,835 INFO  L82        PathProgramCache]: Analyzing trace with hash 2002784121, now seen corresponding path program 1 times
[2020-08-21 21:12:00,836 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 21:12:00,836 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781698948]
[2020-08-21 21:12:00,836 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 21:12:00,862 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:12:01,115 WARN  L193               SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-21 21:12:01,116 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 21:12:01,140 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:12:01,177 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 21:12:01,178 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:12:01,180 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 21:12:01,184 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:12:01,187 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 21:12:01,188 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:12:01,193 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 21:12:01,194 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:12:01,195 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2020-08-21 21:12:01,195 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:12:01,196 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41
[2020-08-21 21:12:01,202 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:12:01,204 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47
[2020-08-21 21:12:01,205 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:12:01,233 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53
[2020-08-21 21:12:01,234 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:12:01,244 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 21:12:01,244 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781698948]
[2020-08-21 21:12:01,245 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 21:12:01,245 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-08-21 21:12:01,245 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223787361]
[2020-08-21 21:12:01,246 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-08-21 21:12:01,246 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 21:12:01,246 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-08-21 21:12:01,247 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2020-08-21 21:12:01,247 INFO  L87              Difference]: Start difference. First operand 190 states and 225 transitions. Second operand 7 states.
[2020-08-21 21:12:01,596 WARN  L193               SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-21 21:12:02,579 WARN  L193               SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 21:12:02,839 WARN  L193               SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 21:12:03,099 WARN  L193               SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 21:12:03,337 WARN  L193               SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-21 21:12:03,595 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 21:12:03,595 INFO  L93              Difference]: Finished difference Result 537 states and 682 transitions.
[2020-08-21 21:12:03,596 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-08-21 21:12:03,596 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 61
[2020-08-21 21:12:03,597 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 21:12:03,601 INFO  L225             Difference]: With dead ends: 537
[2020-08-21 21:12:03,601 INFO  L226             Difference]: Without dead ends: 371
[2020-08-21 21:12:03,603 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132
[2020-08-21 21:12:03,604 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 371 states.
[2020-08-21 21:12:03,682 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 349.
[2020-08-21 21:12:03,683 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 349 states.
[2020-08-21 21:12:03,685 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 425 transitions.
[2020-08-21 21:12:03,686 INFO  L78                 Accepts]: Start accepts. Automaton has 349 states and 425 transitions. Word has length 61
[2020-08-21 21:12:03,686 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 21:12:03,687 INFO  L479      AbstractCegarLoop]: Abstraction has 349 states and 425 transitions.
[2020-08-21 21:12:03,687 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-08-21 21:12:03,687 INFO  L276                IsEmpty]: Start isEmpty. Operand 349 states and 425 transitions.
[2020-08-21 21:12:03,688 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 66
[2020-08-21 21:12:03,688 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 21:12:03,689 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-21 21:12:03,689 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-08-21 21:12:03,689 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 21:12:03,689 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 21:12:03,690 INFO  L82        PathProgramCache]: Analyzing trace with hash 1296160083, now seen corresponding path program 1 times
[2020-08-21 21:12:03,690 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 21:12:03,690 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622615133]
[2020-08-21 21:12:03,690 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 21:12:03,716 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:12:03,940 WARN  L193               SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-21 21:12:03,941 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 21:12:03,954 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:12:03,968 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 21:12:03,969 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:12:03,970 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 21:12:03,971 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:12:03,972 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 21:12:03,972 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:12:03,974 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 21:12:03,974 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:12:04,010 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35
[2020-08-21 21:12:04,011 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:12:04,012 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2020-08-21 21:12:04,013 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:12:04,013 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2020-08-21 21:12:04,020 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:12:04,025 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2020-08-21 21:12:04,026 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:12:04,027 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57
[2020-08-21 21:12:04,028 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 21:12:04,060 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 21:12:04,061 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622615133]
[2020-08-21 21:12:04,061 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 21:12:04,061 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-08-21 21:12:04,062 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585856654]
[2020-08-21 21:12:04,065 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-08-21 21:12:04,065 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 21:12:04,065 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-08-21 21:12:04,066 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-08-21 21:12:04,066 INFO  L87              Difference]: Start difference. First operand 349 states and 425 transitions. Second operand 5 states.
[2020-08-21 21:12:04,380 WARN  L193               SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-21 21:12:04,981 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 21:12:04,982 INFO  L93              Difference]: Finished difference Result 642 states and 802 transitions.
[2020-08-21 21:12:04,982 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-08-21 21:12:04,982 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 65
[2020-08-21 21:12:04,983 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 21:12:04,987 INFO  L225             Difference]: With dead ends: 642
[2020-08-21 21:12:04,988 INFO  L226             Difference]: Without dead ends: 317
[2020-08-21 21:12:04,994 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2020-08-21 21:12:04,995 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 317 states.
[2020-08-21 21:12:05,063 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 303.
[2020-08-21 21:12:05,063 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 303 states.
[2020-08-21 21:12:05,066 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 354 transitions.
[2020-08-21 21:12:05,066 INFO  L78                 Accepts]: Start accepts. Automaton has 303 states and 354 transitions. Word has length 65
[2020-08-21 21:12:05,067 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 21:12:05,067 INFO  L479      AbstractCegarLoop]: Abstraction has 303 states and 354 transitions.
[2020-08-21 21:12:05,068 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-08-21 21:12:05,068 INFO  L276                IsEmpty]: Start isEmpty. Operand 303 states and 354 transitions.
[2020-08-21 21:12:05,069 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 66
[2020-08-21 21:12:05,069 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 21:12:05,069 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-21 21:12:05,070 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-08-21 21:12:05,070 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 21:12:05,070 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 21:12:05,070 INFO  L82        PathProgramCache]: Analyzing trace with hash -423236225, now seen corresponding path program 1 times
[2020-08-21 21:12:05,071 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 21:12:05,071 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952535838]
[2020-08-21 21:12:05,071 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 21:12:05,139 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-08-21 21:12:05,142 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-08-21 21:12:05,142 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-08-21 21:12:05,146 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-08-21 21:12:05,177 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 09:12:05 BoogieIcfgContainer
[2020-08-21 21:12:05,177 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-08-21 21:12:05,179 INFO  L168              Benchmark]: Toolchain (without parser) took 13436.48 ms. Allocated memory was 141.6 MB in the beginning and 443.5 MB in the end (delta: 302.0 MB). Free memory was 104.0 MB in the beginning and 165.6 MB in the end (delta: -61.6 MB). Peak memory consumption was 240.4 MB. Max. memory is 7.1 GB.
[2020-08-21 21:12:05,179 INFO  L168              Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.7 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB.
[2020-08-21 21:12:05,180 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 597.48 ms. Allocated memory was 141.6 MB in the beginning and 206.0 MB in the end (delta: 64.5 MB). Free memory was 103.6 MB in the beginning and 176.7 MB in the end (delta: -73.0 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB.
[2020-08-21 21:12:05,181 INFO  L168              Benchmark]: Boogie Preprocessor took 107.07 ms. Allocated memory is still 206.0 MB. Free memory was 176.7 MB in the beginning and 172.5 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB.
[2020-08-21 21:12:05,182 INFO  L168              Benchmark]: RCFGBuilder took 1122.49 ms. Allocated memory was 206.0 MB in the beginning and 234.4 MB in the end (delta: 28.3 MB). Free memory was 172.5 MB in the beginning and 198.4 MB in the end (delta: -25.9 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB.
[2020-08-21 21:12:05,183 INFO  L168              Benchmark]: TraceAbstraction took 11604.58 ms. Allocated memory was 234.4 MB in the beginning and 443.5 MB in the end (delta: 209.2 MB). Free memory was 198.4 MB in the beginning and 165.6 MB in the end (delta: 32.8 MB). Peak memory consumption was 242.0 MB. Max. memory is 7.1 GB.
[2020-08-21 21:12:05,187 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.7 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 597.48 ms. Allocated memory was 141.6 MB in the beginning and 206.0 MB in the end (delta: 64.5 MB). Free memory was 103.6 MB in the beginning and 176.7 MB in the end (delta: -73.0 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 107.07 ms. Allocated memory is still 206.0 MB. Free memory was 176.7 MB in the beginning and 172.5 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 1122.49 ms. Allocated memory was 206.0 MB in the beginning and 234.4 MB in the end (delta: 28.3 MB). Free memory was 172.5 MB in the beginning and 198.4 MB in the end (delta: -25.9 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 11604.58 ms. Allocated memory was 234.4 MB in the beginning and 443.5 MB in the end (delta: 209.2 MB). Free memory was 198.4 MB in the beginning and 165.6 MB in the end (delta: 32.8 MB). Peak memory consumption was 242.0 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 890]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L158]              int pumpRunning  =    0;
[L159]              int systemActive  =    1;
[L306]              int waterLevel  =    1;
[L307]              int methaneLevelCritical  =    0;
[L593]              static struct __ACC__ERR *head  =    (struct __ACC__ERR *)0;
[L790]              int cleanupTimeShifts  =    4;
[L863]              int retValue_acc ;
[L864]              int tmp ;
[L868]  FCALL       select_helpers()
[L869]  FCALL       select_features()
[L870]  CALL, EXPR  valid_product()
[L415]              int retValue_acc ;
[L418]              retValue_acc = 1
[L419]              return (retValue_acc);
[L870]  RET, EXPR   valid_product()
[L870]              tmp = valid_product()
[L872]  COND TRUE   \read(tmp)
[L874]  FCALL       setup()
[L875]  CALL        runTest()
[L857]  CALL        test()
[L85]               int splverifierCounter ;
[L86]               int tmp ;
[L87]               int tmp___0 ;
[L88]               int tmp___1 ;
[L89]               int tmp___2 ;
[L92]               splverifierCounter = 0
[L94]   COND TRUE   1
[L96]   COND TRUE   splverifierCounter < 4
[L102]              tmp = __VERIFIER_nondet_int()
[L104]  COND TRUE   \read(tmp)
[L106]  CALL        waterRise()
[L324]  COND TRUE   waterLevel < 2
[L325]              waterLevel = waterLevel + 1
[L106]  RET         waterRise()
[L112]              tmp___0 = __VERIFIER_nondet_int()
[L114]  COND FALSE  !(\read(tmp___0))
[L122]              tmp___2 = __VERIFIER_nondet_int()
[L124]  COND FALSE  !(\read(tmp___2))
[L130]              tmp___1 = __VERIFIER_nondet_int()
[L132]  COND FALSE  !(\read(tmp___1))
[L141]  CALL        timeShift()
[L165]  COND FALSE  !(\read(pumpRunning))
[L172]  COND TRUE   \read(systemActive)
[L174]  FCALL       processEnvironment()
[L180]  CALL        __utac_acc__Specification3_spec__1()
[L45]               int tmp ;
[L46]               int tmp___0 ;
[L47]               int tmp___1 ;
[L51]   CALL, EXPR  isMethaneLevelCritical()
[L345]              int retValue_acc ;
[L348]              retValue_acc = methaneLevelCritical
[L349]              return (retValue_acc);
[L51]   RET, EXPR   isMethaneLevelCritical()
[L51]               tmp = isMethaneLevelCritical()
[L53]   COND FALSE  !(\read(tmp))
[L57]   CALL, EXPR  getWaterLevel()
[L377]              int retValue_acc ;
[L380]              retValue_acc = waterLevel
[L381]              return (retValue_acc);
[L57]   RET, EXPR   getWaterLevel()
[L57]               tmp___0 = getWaterLevel()
[L59]   COND TRUE   tmp___0 == 2
[L61]   CALL, EXPR  isPumpRunning()
[L238]              int retValue_acc ;
[L241]              retValue_acc = pumpRunning
[L242]              return (retValue_acc);
[L61]   RET, EXPR   isPumpRunning()
[L61]               tmp___1 = isPumpRunning()
[L63]   COND FALSE  !(\read(tmp___1))
[L67]   CALL        __automaton_fail()
[L890]              __VERIFIER_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 37 procedures, 214 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 8.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 429 SDtfs, 644 SDslu, 342 SDs, 0 SdLazy, 1355 SolverSat, 382 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=349occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 160 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 354 NumberOfCodeBlocks, 354 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 284 ConstructedInterpolants, 0 QuantifiedInterpolants, 79940 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...