/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=BIGGEST --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_product26.cil.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 20:13:14,293 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 20:13:14,298 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 20:13:14,346 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 20:13:14,347 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 20:13:14,354 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 20:13:14,357 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 20:13:14,360 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 20:13:14,363 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 20:13:14,366 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 20:13:14,367 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 20:13:14,368 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 20:13:14,368 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 20:13:14,371 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 20:13:14,374 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 20:13:14,375 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 20:13:14,377 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 20:13:14,378 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 20:13:14,379 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 20:13:14,387 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 20:13:14,389 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 20:13:14,390 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 20:13:14,391 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 20:13:14,392 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 20:13:14,403 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 20:13:14,409 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 20:13:14,409 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 20:13:14,410 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 20:13:14,411 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 20:13:14,411 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 20:13:14,415 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 20:13:14,416 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 20:13:14,417 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 20:13:14,420 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 20:13:14,421 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 20:13:14,421 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 20:13:14,422 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 20:13:14,422 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 20:13:14,422 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 20:13:14,424 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 20:13:14,425 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 20:13:14,426 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 20:13:14,471 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 20:13:14,471 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 20:13:14,474 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 20:13:14,474 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 20:13:14,474 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 20:13:14,474 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 20:13:14,474 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 20:13:14,475 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 20:13:14,475 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 20:13:14,475 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 20:13:14,476 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 20:13:14,476 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 20:13:14,476 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 20:13:14,477 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 20:13:14,477 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 20:13:14,477 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 20:13:14,477 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 20:13:14,478 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 20:13:14,478 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 20:13:14,478 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 20:13:14,478 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 20:13:14,479 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 20:13:14,479 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 20:13:14,479 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 20:13:14,479 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 20:13:14,479 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 20:13:14,480 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 20:13:14,480 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 20:13:14,480 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 20:13:14,480 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;
[2020-09-24 20:13:14,926 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 20:13:14,946 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 20:13:14,950 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 20:13:14,954 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 20:13:14,955 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 20:13:14,956 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product26.cil.c
[2020-09-24 20:13:15,037 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9bcf09eb/4d317d0ec668455bb8215492eb995814/FLAG842ff5764
[2020-09-24 20:13:15,678 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 20:13:15,679 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product26.cil.c
[2020-09-24 20:13:15,701 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9bcf09eb/4d317d0ec668455bb8215492eb995814/FLAG842ff5764
[2020-09-24 20:13:15,906 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9bcf09eb/4d317d0ec668455bb8215492eb995814
[2020-09-24 20:13:15,922 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 20:13:15,931 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 20:13:15,936 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 20:13:15,936 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 20:13:15,940 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 20:13:15,942 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:13:15" (1/1) ...
[2020-09-24 20:13:15,947 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11967da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:15, skipping insertion in model container
[2020-09-24 20:13:15,947 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:13:15" (1/1) ...
[2020-09-24 20:13:15,959 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 20:13:16,038 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 20:13:16,505 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 20:13:16,522 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 20:13:16,664 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 20:13:16,701 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 20:13:16,702 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:16 WrapperNode
[2020-09-24 20:13:16,702 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 20:13:16,703 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 20:13:16,703 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 20:13:16,703 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 20:13:16,719 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:16" (1/1) ...
[2020-09-24 20:13:16,720 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:16" (1/1) ...
[2020-09-24 20:13:16,742 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:16" (1/1) ...
[2020-09-24 20:13:16,742 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:16" (1/1) ...
[2020-09-24 20:13:16,772 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:16" (1/1) ...
[2020-09-24 20:13:16,784 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:16" (1/1) ...
[2020-09-24 20:13:16,790 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:16" (1/1) ...
[2020-09-24 20:13:16,798 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 20:13:16,798 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 20:13:16,799 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 20:13:16,799 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 20:13:16,800 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:16" (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 20:13:16,911 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 20:13:16,911 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 20:13:16,911 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-09-24 20:13:16,911 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-09-24 20:13:16,912 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-09-24 20:13:16,912 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-09-24 20:13:16,912 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-09-24 20:13:16,912 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 20:13:16,914 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-09-24 20:13:16,914 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-09-24 20:13:16,914 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-09-24 20:13:16,914 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-09-24 20:13:16,914 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-09-24 20:13:16,915 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-09-24 20:13:16,915 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-09-24 20:13:16,916 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-09-24 20:13:16,916 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-09-24 20:13:16,916 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-09-24 20:13:16,917 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry
[2020-09-24 20:13:16,917 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-09-24 20:13:16,917 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-09-24 20:13:16,918 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-09-24 20:13:16,918 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-09-24 20:13:16,918 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-09-24 20:13:16,919 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-09-24 20:13:16,920 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-09-24 20:13:16,920 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-09-24 20:13:16,920 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base
[2020-09-24 20:13:16,920 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-09-24 20:13:16,920 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor
[2020-09-24 20:13:16,920 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-09-24 20:13:16,921 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-09-24 20:13:16,921 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-09-24 20:13:16,921 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-09-24 20:13:16,921 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-09-24 20:13:16,921 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterLevel
[2020-09-24 20:13:16,921 INFO  L138     BoogieDeclarations]: Found implementation of procedure startSystem
[2020-09-24 20:13:16,922 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-09-24 20:13:16,922 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1
[2020-09-24 20:13:16,922 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 20:13:16,922 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 20:13:16,922 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-09-24 20:13:16,922 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-09-24 20:13:16,923 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-09-24 20:13:16,923 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-09-24 20:13:16,923 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-09-24 20:13:16,923 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-09-24 20:13:16,923 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-09-24 20:13:16,923 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-09-24 20:13:16,923 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-09-24 20:13:16,924 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-09-24 20:13:16,924 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-09-24 20:13:16,924 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-09-24 20:13:16,924 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-09-24 20:13:16,925 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 20:13:16,925 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-09-24 20:13:16,925 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-09-24 20:13:16,925 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-09-24 20:13:16,926 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-09-24 20:13:16,926 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-09-24 20:13:16,926 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry
[2020-09-24 20:13:16,926 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-24 20:13:16,926 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-09-24 20:13:16,926 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-09-24 20:13:16,926 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-09-24 20:13:16,927 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-09-24 20:13:16,927 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-09-24 20:13:16,927 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-09-24 20:13:16,927 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-09-24 20:13:16,927 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-09-24 20:13:16,928 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-09-24 20:13:16,929 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-24 20:13:16,929 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-09-24 20:13:16,930 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-09-24 20:13:16,930 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-09-24 20:13:16,930 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-09-24 20:13:16,930 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-09-24 20:13:16,930 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-09-24 20:13:16,930 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-09-24 20:13:16,931 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-09-24 20:13:16,931 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-09-24 20:13:16,931 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-09-24 20:13:16,931 INFO  L130     BoogieDeclarations]: Found specification of procedure startSystem
[2020-09-24 20:13:16,931 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1
[2020-09-24 20:13:16,931 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-09-24 20:13:16,931 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base
[2020-09-24 20:13:16,932 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterLevel
[2020-09-24 20:13:16,932 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor
[2020-09-24 20:13:16,933 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-09-24 20:13:16,933 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 20:13:16,933 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-09-24 20:13:16,933 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 20:13:18,219 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 20:13:18,220 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-09-24 20:13:18,227 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:13:18 BoogieIcfgContainer
[2020-09-24 20:13:18,228 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 20:13:18,230 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 20:13:18,230 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 20:13:18,234 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 20:13:18,235 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:13:15" (1/3) ...
[2020-09-24 20:13:18,236 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6427d264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:13:18, skipping insertion in model container
[2020-09-24 20:13:18,236 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:16" (2/3) ...
[2020-09-24 20:13:18,237 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6427d264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:13:18, skipping insertion in model container
[2020-09-24 20:13:18,237 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:13:18" (3/3) ...
[2020-09-24 20:13:18,239 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec3_product26.cil.c
[2020-09-24 20:13:18,252 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 20:13:18,268 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 20:13:18,292 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 20:13:18,330 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 20:13:18,331 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 20:13:18,331 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 20:13:18,331 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 20:13:18,331 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 20:13:18,331 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 20:13:18,331 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 20:13:18,331 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 20:13:18,358 INFO  L276                IsEmpty]: Start isEmpty. Operand 306 states.
[2020-09-24 20:13:18,377 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 154
[2020-09-24 20:13:18,378 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 20:13:18,379 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 20:13:18,380 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 20:13:18,386 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 20:13:18,387 INFO  L82        PathProgramCache]: Analyzing trace with hash -502047938, now seen corresponding path program 1 times
[2020-09-24 20:13:18,398 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 20:13:18,399 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816028394]
[2020-09-24 20:13:18,399 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 20:13:18,794 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:13:18,926 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:13:19,182 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:13:20,860 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:13:23,843 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:13:23,843 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 186
[2020-09-24 20:13:23,844 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-24 20:13:23,844 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5038
[2020-09-24 20:13:23,849 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:13:23,849 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 16
[2020-09-24 20:13:23,849 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 78
[2020-09-24 20:13:23,850 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 92
[2020-09-24 20:13:23,850 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 5
[2020-09-24 20:13:24,385 WARN  L193               SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-09-24 20:13:24,388 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 20:13:24,429 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:13:24,473 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:13:24,709 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:13:24,710 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 85
[2020-09-24 20:13:24,710 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:13:24,710 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 278
[2020-09-24 20:13:24,710 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:13:24,711 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 20:13:24,711 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 20:13:24,711 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 74
[2020-09-24 20:13:24,711 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 20:13:24,778 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-09-24 20:13:24,780 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:13:24,781 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:13:24,785 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:13:24,786 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 20:13:24,786 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:13:24,786 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 20:13:24,786 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:13:24,787 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 20:13:24,787 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 20:13:24,787 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 20:13:24,787 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 20:13:24,789 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-09-24 20:13:24,790 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:13:24,792 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:13:24,796 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:13:24,796 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 20:13:24,796 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:13:24,796 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 20:13:24,797 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:13:24,797 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 20:13:24,797 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 20:13:24,797 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 20:13:24,798 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 20:13:24,799 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-09-24 20:13:24,801 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:13:24,803 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:13:24,812 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:13:24,813 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 20:13:24,813 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:13:24,813 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-09-24 20:13:24,814 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:13:24,814 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 20:13:24,814 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 20:13:24,814 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 20:13:24,815 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 20:13:24,817 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-09-24 20:13:24,818 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:13:24,820 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:13:24,823 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:13:24,824 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 20:13:24,824 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:13:24,824 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 20:13:24,824 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:13:24,825 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 20:13:24,825 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 20:13:24,825 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 20:13:24,825 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 20:13:24,827 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2020-09-24 20:13:24,828 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:13:24,830 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:13:24,834 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:13:24,834 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 20:13:24,834 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:13:24,835 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-24 20:13:24,835 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:13:24,835 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 20:13:24,835 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 20:13:24,836 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 20:13:24,836 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 20:13:24,838 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131
[2020-09-24 20:13:24,839 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:13:24,841 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:13:24,851 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:13:24,852 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 20:13:24,852 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:13:24,852 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-09-24 20:13:24,852 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:13:24,853 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 20:13:24,853 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 20:13:24,853 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 20:13:24,853 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 20:13:24,883 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141
[2020-09-24 20:13:24,885 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:13:24,886 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:13:24,888 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:13:24,889 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 20:13:24,889 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:13:24,889 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 20:13:24,889 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:13:24,890 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 20:13:24,890 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 20:13:24,890 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 20:13:24,890 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 20:13:24,923 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 20:13:24,924 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1816028394]
[2020-09-24 20:13:24,926 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 20:13:24,927 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-09-24 20:13:24,928 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374603684]
[2020-09-24 20:13:24,935 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-09-24 20:13:24,936 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 20:13:24,957 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-09-24 20:13:24,959 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2020-09-24 20:13:24,962 INFO  L87              Difference]: Start difference. First operand 306 states. Second operand 8 states.
[2020-09-24 20:13:25,611 WARN  L193               SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 20:13:27,029 WARN  L193               SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 20:13:27,395 WARN  L193               SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-09-24 20:13:27,804 WARN  L193               SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 20:13:28,224 WARN  L193               SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-09-24 20:13:28,548 WARN  L193               SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 20:13:29,246 WARN  L193               SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 20:13:29,558 WARN  L193               SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 20:13:30,677 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 20:13:30,677 INFO  L93              Difference]: Finished difference Result 586 states and 723 transitions.
[2020-09-24 20:13:30,682 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-09-24 20:13:30,684 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 153
[2020-09-24 20:13:30,685 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 20:13:30,725 INFO  L225             Difference]: With dead ends: 586
[2020-09-24 20:13:30,726 INFO  L226             Difference]: Without dead ends: 390
[2020-09-24 20:13:30,742 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 20:13:30,773 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 390 states.
[2020-09-24 20:13:30,938 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 346.
[2020-09-24 20:13:30,940 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 346 states.
[2020-09-24 20:13:30,943 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 380 transitions.
[2020-09-24 20:13:30,946 INFO  L78                 Accepts]: Start accepts. Automaton has 346 states and 380 transitions. Word has length 153
[2020-09-24 20:13:30,947 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 20:13:30,947 INFO  L479      AbstractCegarLoop]: Abstraction has 346 states and 380 transitions.
[2020-09-24 20:13:30,947 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-09-24 20:13:30,947 INFO  L276                IsEmpty]: Start isEmpty. Operand 346 states and 380 transitions.
[2020-09-24 20:13:30,954 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 173
[2020-09-24 20:13:30,954 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 20:13:30,954 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]
[2020-09-24 20:13:30,955 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 20:13:30,955 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 20:13:30,955 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 20:13:30,955 INFO  L82        PathProgramCache]: Analyzing trace with hash -812188964, now seen corresponding path program 1 times
[2020-09-24 20:13:30,956 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 20:13:30,956 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046627348]
[2020-09-24 20:13:30,956 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 20:13:31,013 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:13:31,073 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:13:31,382 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:13:31,383 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 207
[2020-09-24 20:13:31,383 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:13:31,383 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 366
[2020-09-24 20:13:31,383 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:13:31,384 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 20:13:31,384 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 153
[2020-09-24 20:13:31,384 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-09-24 20:13:31,384 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 20:13:31,743 WARN  L193               SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-09-24 20:13:31,744 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 20:13:31,753 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:13:31,766 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:13:31,899 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:13:31,899 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 85
[2020-09-24 20:13:31,899 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:13:31,899 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 142
[2020-09-24 20:13:31,900 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:13:31,900 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 20:13:31,900 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 20:13:31,900 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 20:13:31,901 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 20:13:31,944 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-09-24 20:13:31,945 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:13:31,947 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:13:31,949 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:13:31,949 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 20:13:31,950 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:13:31,950 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 20:13:31,950 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:13:31,950 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 20:13:31,950 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 20:13:31,951 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 20:13:31,951 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 20:13:31,952 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-09-24 20:13:31,953 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:13:31,954 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:13:31,956 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:13:31,957 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 20:13:31,957 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:13:31,957 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 20:13:31,957 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:13:31,957 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 20:13:31,958 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 20:13:31,958 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 20:13:31,958 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 20:13:31,960 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-09-24 20:13:31,960 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:13:31,962 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:13:31,966 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:13:31,967 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 20:13:31,967 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:13:31,967 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-24 20:13:31,967 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:13:31,967 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 20:13:31,968 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 20:13:31,968 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 20:13:31,968 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 20:13:31,970 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-09-24 20:13:31,970 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:13:31,971 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:13:31,972 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:13:31,973 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 20:13:31,973 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:13:31,973 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 20:13:31,973 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:13:31,974 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 20:13:31,974 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 20:13:31,974 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 20:13:31,974 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 20:13:31,981 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116
[2020-09-24 20:13:31,982 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:13:31,983 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:13:31,985 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:13:31,986 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-24 20:13:31,986 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:13:31,986 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 20:13:31,986 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:13:31,986 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 20:13:31,987 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 20:13:31,987 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 20:13:31,987 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 20:13:31,996 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129
[2020-09-24 20:13:31,998 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:13:31,999 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:13:32,002 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:13:32,003 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-09-24 20:13:32,003 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:13:32,003 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 20:13:32,003 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:13:32,004 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 20:13:32,004 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 20:13:32,004 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-09-24 20:13:32,004 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 20:13:32,007 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140
[2020-09-24 20:13:32,007 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:13:32,009 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:13:32,010 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:13:32,011 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 20:13:32,011 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:13:32,011 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 20:13:32,014 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:13:32,014 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 20:13:32,015 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 20:13:32,015 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 20:13:32,015 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 20:13:32,017 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150
[2020-09-24 20:13:32,017 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:13:32,019 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:13:32,020 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:13:32,020 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 20:13:32,020 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:13:32,021 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 20:13:32,021 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:13:32,021 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 20:13:32,021 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 20:13:32,024 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 20:13:32,024 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-09-24 20:13:32,026 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160
[2020-09-24 20:13:32,026 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:13:32,028 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:13:32,029 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:13:32,029 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 20:13:32,030 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:13:32,030 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 20:13:32,030 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:13:32,030 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 20:13:32,031 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 20:13:32,031 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 20:13:32,031 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 20:13:32,068 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 20:13:32,069 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046627348]
[2020-09-24 20:13:32,069 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 20:13:32,069 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-09-24 20:13:32,070 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958377394]
[2020-09-24 20:13:32,073 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-09-24 20:13:32,073 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 20:13:32,073 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-09-24 20:13:32,074 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-09-24 20:13:32,074 INFO  L87              Difference]: Start difference. First operand 346 states and 380 transitions. Second operand 6 states.
[2020-09-24 20:13:32,596 WARN  L193               SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 20:13:33,971 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 20:13:33,971 INFO  L93              Difference]: Finished difference Result 725 states and 881 transitions.
[2020-09-24 20:13:33,972 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-09-24 20:13:33,972 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 172
[2020-09-24 20:13:33,973 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 20:13:33,978 INFO  L225             Difference]: With dead ends: 725
[2020-09-24 20:13:33,979 INFO  L226             Difference]: Without dead ends: 489
[2020-09-24 20:13:33,981 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110
[2020-09-24 20:13:33,982 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 489 states.
[2020-09-24 20:13:34,044 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 351.
[2020-09-24 20:13:34,045 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 351 states.
[2020-09-24 20:13:34,047 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 385 transitions.
[2020-09-24 20:13:34,047 INFO  L78                 Accepts]: Start accepts. Automaton has 351 states and 385 transitions. Word has length 172
[2020-09-24 20:13:34,048 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 20:13:34,048 INFO  L479      AbstractCegarLoop]: Abstraction has 351 states and 385 transitions.
[2020-09-24 20:13:34,049 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-09-24 20:13:34,049 INFO  L276                IsEmpty]: Start isEmpty. Operand 351 states and 385 transitions.
[2020-09-24 20:13:34,052 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 181
[2020-09-24 20:13:34,052 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 20:13:34,053 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, 1, 1, 1, 1]
[2020-09-24 20:13:34,053 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 20:13:34,053 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 20:13:34,054 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 20:13:34,054 INFO  L82        PathProgramCache]: Analyzing trace with hash 74620443, now seen corresponding path program 1 times
[2020-09-24 20:13:34,054 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 20:13:34,054 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881097618]
[2020-09-24 20:13:34,055 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 20:13:34,121 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-24 20:13:34,130 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-24 20:13:34,130 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-09-24 20:13:34,136 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-24 20:13:34,168 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 08:13:34 BoogieIcfgContainer
[2020-09-24 20:13:34,169 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-24 20:13:34,171 INFO  L168              Benchmark]: Toolchain (without parser) took 18246.90 ms. Allocated memory was 138.9 MB in the beginning and 444.6 MB in the end (delta: 305.7 MB). Free memory was 101.4 MB in the beginning and 86.2 MB in the end (delta: 15.3 MB). Peak memory consumption was 320.9 MB. Max. memory is 7.1 GB.
[2020-09-24 20:13:34,172 INFO  L168              Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-24 20:13:34,173 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 766.82 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 100.8 MB in the beginning and 171.2 MB in the end (delta: -70.4 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB.
[2020-09-24 20:13:34,174 INFO  L168              Benchmark]: Boogie Preprocessor took 95.06 ms. Allocated memory is still 203.4 MB. Free memory was 171.2 MB in the beginning and 167.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB.
[2020-09-24 20:13:34,175 INFO  L168              Benchmark]: RCFGBuilder took 1429.38 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 167.0 MB in the beginning and 176.9 MB in the end (delta: -9.9 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB.
[2020-09-24 20:13:34,176 INFO  L168              Benchmark]: TraceAbstraction took 15938.65 ms. Allocated memory was 235.4 MB in the beginning and 444.6 MB in the end (delta: 209.2 MB). Free memory was 176.9 MB in the beginning and 86.2 MB in the end (delta: 90.7 MB). Peak memory consumption was 299.9 MB. Max. memory is 7.1 GB.
[2020-09-24 20:13:34,180 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 766.82 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 100.8 MB in the beginning and 171.2 MB in the end (delta: -70.4 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 95.06 ms. Allocated memory is still 203.4 MB. Free memory was 171.2 MB in the beginning and 167.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 1429.38 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 167.0 MB in the beginning and 176.9 MB in the end (delta: -9.9 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 15938.65 ms. Allocated memory was 235.4 MB in the beginning and 444.6 MB in the end (delta: 209.2 MB). Free memory was 176.9 MB in the beginning and 86.2 MB in the end (delta: 90.7 MB). Peak memory consumption was 299.9 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 643]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L40]               int cleanupTimeShifts  =    4;
[L184]              int waterLevel  =    1;
[L185]              int methaneLevelCritical  =    0;
[L442]              static struct __ACC__ERR *head  =    (struct __ACC__ERR *)0;
[L652]              int pumpRunning  =    0;
[L653]              int systemActive  =    1;
[L121]              int retValue_acc ;
[L122]              int tmp ;
[L126]  FCALL       select_helpers()
[L127]  FCALL       select_features()
[L128]  CALL, EXPR  valid_product()
[L170]              int retValue_acc ;
[L173]              retValue_acc = 1
[L174]              return (retValue_acc);
[L128]  RET, EXPR   valid_product()
[L128]              tmp = valid_product()
[L130]  COND TRUE   \read(tmp)
[L132]  FCALL       setup()
[L133]  CALL        runTest()
[L112]  CALL        test()
[L832]              int splverifierCounter ;
[L833]              int tmp ;
[L834]              int tmp___0 ;
[L835]              int tmp___1 ;
[L836]              int tmp___2 ;
[L839]              splverifierCounter = 0
[L841]  COND TRUE   1
[L843]  COND TRUE   splverifierCounter < 4
[L849]              tmp = __VERIFIER_nondet_int()
[L851]  COND TRUE   \read(tmp)
[L853]  CALL        waterRise()
[L202]  COND TRUE   waterLevel < 2
[L203]              waterLevel = waterLevel + 1
[L853]  RET         waterRise()
[L859]              tmp___0 = __VERIFIER_nondet_int()
[L861]  COND FALSE  !(\read(tmp___0))
[L869]              tmp___2 = __VERIFIER_nondet_int()
[L871]  COND TRUE   \read(tmp___2)
[L873]  CALL        startSystem()
[L826]              systemActive = 1
[L873]  RET         startSystem()
[L886]  CALL        timeShift()
[L660]  COND FALSE  !(\read(pumpRunning))
[L667]  COND TRUE   \read(systemActive)
[L669]  CALL        processEnvironment()
[L689]              int tmp ;
[L692]  COND FALSE  !(\read(pumpRunning))
[L707]  FCALL       processEnvironment__wrappee__base()
[L669]  RET         processEnvironment()
[L675]  CALL        __utac_acc__Specification3_spec__1()
[L899]              int tmp ;
[L900]              int tmp___0 ;
[L901]              int tmp___1 ;
[L905]  CALL, EXPR  isMethaneLevelCritical()
[L223]              int retValue_acc ;
[L226]              retValue_acc = methaneLevelCritical
[L227]              return (retValue_acc);
[L905]  RET, EXPR   isMethaneLevelCritical()
[L905]              tmp = isMethaneLevelCritical()
[L907]  COND FALSE  !(\read(tmp))
[L911]  CALL, EXPR  getWaterLevel()
[L255]              int retValue_acc ;
[L258]              retValue_acc = waterLevel
[L259]              return (retValue_acc);
[L911]  RET, EXPR   getWaterLevel()
[L911]              tmp___0 = getWaterLevel()
[L913]  COND TRUE   tmp___0 == 2
[L915]  CALL, EXPR  isPumpRunning()
[L759]              int retValue_acc ;
[L762]              retValue_acc = pumpRunning
[L763]              return (retValue_acc);
[L915]  RET, EXPR   isPumpRunning()
[L915]              tmp___1 = isPumpRunning()
[L917]  COND FALSE  !(\read(tmp___1))
[L921]  CALL        __automaton_fail()
[L643]              __VERIFIER_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 39 procedures, 622 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 7.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 467 SDtfs, 933 SDslu, 706 SDs, 0 SdLazy, 1472 SolverSat, 312 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=351occurred 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, 182 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 505 NumberOfCodeBlocks, 505 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 323 ConstructedInterpolants, 0 QuantifiedInterpolants, 128744 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...