/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product38.cil.c


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


This is Ultimate 0.1.25-5644d1e-m
[2020-08-18 17:39:02,218 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-08-18 17:39:02,222 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-08-18 17:39:02,261 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-08-18 17:39:02,261 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-08-18 17:39:02,263 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-08-18 17:39:02,268 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-08-18 17:39:02,270 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-08-18 17:39:02,276 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-08-18 17:39:02,277 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-08-18 17:39:02,278 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-08-18 17:39:02,279 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-08-18 17:39:02,279 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-08-18 17:39:02,280 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-08-18 17:39:02,281 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-08-18 17:39:02,282 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-08-18 17:39:02,283 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-08-18 17:39:02,283 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-08-18 17:39:02,285 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-08-18 17:39:02,287 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-08-18 17:39:02,288 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-08-18 17:39:02,289 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-08-18 17:39:02,290 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-08-18 17:39:02,291 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-08-18 17:39:02,293 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-08-18 17:39:02,293 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-08-18 17:39:02,294 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-08-18 17:39:02,294 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-08-18 17:39:02,295 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-08-18 17:39:02,296 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-08-18 17:39:02,296 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-08-18 17:39:02,297 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-08-18 17:39:02,297 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-08-18 17:39:02,298 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-08-18 17:39:02,299 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-08-18 17:39:02,299 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-08-18 17:39:02,300 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-08-18 17:39:02,300 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-08-18 17:39:02,300 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-08-18 17:39:02,301 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-08-18 17:39:02,302 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-08-18 17:39:02,303 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
[2020-08-18 17:39:02,324 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-08-18 17:39:02,325 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-08-18 17:39:02,326 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-08-18 17:39:02,326 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-08-18 17:39:02,327 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-08-18 17:39:02,327 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-08-18 17:39:02,327 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-08-18 17:39:02,327 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-08-18 17:39:02,327 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-08-18 17:39:02,328 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-08-18 17:39:02,328 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-08-18 17:39:02,328 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-08-18 17:39:02,328 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-08-18 17:39:02,328 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-08-18 17:39:02,329 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-08-18 17:39:02,329 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-08-18 17:39:02,329 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-08-18 17:39:02,329 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-08-18 17:39:02,329 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-08-18 17:39:02,330 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-08-18 17:39:02,330 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-08-18 17:39:02,330 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-18 17:39:02,330 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-08-18 17:39:02,330 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-08-18 17:39:02,331 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-08-18 17:39:02,331 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-08-18 17:39:02,331 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-08-18 17:39:02,331 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-08-18 17:39:02,331 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-08-18 17:39:02,332 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=5;interpolation-heuristic=BIGGEST;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST;
[2020-08-18 17:39:02,701 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-08-18 17:39:02,716 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-08-18 17:39:02,726 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-08-18 17:39:02,727 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-08-18 17:39:02,728 INFO  L275        PluginConnector]: CDTParser initialized
[2020-08-18 17:39:02,729 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product38.cil.c
[2020-08-18 17:39:02,802 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6718a1383/96c6531006134d979c8de3b65afdb137/FLAGd949af81c
[2020-08-18 17:39:03,342 INFO  L306              CDTParser]: Found 1 translation units.
[2020-08-18 17:39:03,343 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product38.cil.c
[2020-08-18 17:39:03,357 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6718a1383/96c6531006134d979c8de3b65afdb137/FLAGd949af81c
[2020-08-18 17:39:03,644 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6718a1383/96c6531006134d979c8de3b65afdb137
[2020-08-18 17:39:03,652 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-08-18 17:39:03,653 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-08-18 17:39:03,654 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-08-18 17:39:03,655 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-08-18 17:39:03,658 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-08-18 17:39:03,659 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:39:03" (1/1) ...
[2020-08-18 17:39:03,662 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538d8bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:39:03, skipping insertion in model container
[2020-08-18 17:39:03,662 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:39:03" (1/1) ...
[2020-08-18 17:39:03,670 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-08-18 17:39:03,714 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-08-18 17:39:04,004 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-18 17:39:04,017 INFO  L203         MainTranslator]: Completed pre-run
[2020-08-18 17:39:04,217 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-18 17:39:04,249 INFO  L208         MainTranslator]: Completed translation
[2020-08-18 17:39:04,249 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:39:04 WrapperNode
[2020-08-18 17:39:04,250 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-08-18 17:39:04,251 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-08-18 17:39:04,251 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-08-18 17:39:04,251 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-08-18 17:39:04,261 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:39:04" (1/1) ...
[2020-08-18 17:39:04,262 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:39:04" (1/1) ...
[2020-08-18 17:39:04,281 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:39:04" (1/1) ...
[2020-08-18 17:39:04,282 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:39:04" (1/1) ...
[2020-08-18 17:39:04,317 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:39:04" (1/1) ...
[2020-08-18 17:39:04,328 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:39:04" (1/1) ...
[2020-08-18 17:39:04,332 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:39:04" (1/1) ...
[2020-08-18 17:39:04,340 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-08-18 17:39:04,341 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-08-18 17:39:04,341 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-08-18 17:39:04,341 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-08-18 17:39:04,342 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:39:04" (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
[2020-08-18 17:39:04,408 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-08-18 17:39:04,409 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-08-18 17:39:04,409 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-08-18 17:39:04,409 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-08-18 17:39:04,409 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-08-18 17:39:04,409 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-08-18 17:39:04,409 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-08-18 17:39:04,410 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-08-18 17:39:04,410 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-08-18 17:39:04,410 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-08-18 17:39:04,410 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-08-18 17:39:04,410 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-08-18 17:39:04,411 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1
[2020-08-18 17:39:04,411 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-08-18 17:39:04,411 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-08-18 17:39:04,411 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-08-18 17:39:04,411 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-08-18 17:39:04,411 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-08-18 17:39:04,412 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-08-18 17:39:04,412 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-08-18 17:39:04,412 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base
[2020-08-18 17:39:04,412 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor
[2020-08-18 17:39:04,412 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-08-18 17:39:04,412 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-08-18 17:39:04,412 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-08-18 17:39:04,413 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-08-18 17:39:04,413 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-08-18 17:39:04,413 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-08-18 17:39:04,413 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterLevel
[2020-08-18 17:39:04,413 INFO  L138     BoogieDeclarations]: Found implementation of procedure startSystem
[2020-08-18 17:39:04,414 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-08-18 17:39:04,414 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-08-18 17:39:04,414 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-08-18 17:39:04,414 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-08-18 17:39:04,414 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-08-18 17:39:04,414 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-08-18 17:39:04,414 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-08-18 17:39:04,415 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-08-18 17:39:04,415 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry
[2020-08-18 17:39:04,415 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-08-18 17:39:04,415 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-08-18 17:39:04,415 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-08-18 17:39:04,415 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-08-18 17:39:04,416 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-08-18 17:39:04,416 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-08-18 17:39:04,416 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-08-18 17:39:04,416 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-08-18 17:39:04,416 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-08-18 17:39:04,416 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-08-18 17:39:04,417 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-08-18 17:39:04,417 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-08-18 17:39:04,417 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-08-18 17:39:04,417 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-08-18 17:39:04,417 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-08-18 17:39:04,417 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-08-18 17:39:04,417 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-08-18 17:39:04,418 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-08-18 17:39:04,418 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-08-18 17:39:04,418 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-08-18 17:39:04,418 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1
[2020-08-18 17:39:04,418 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-08-18 17:39:04,418 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-08-18 17:39:04,419 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-08-18 17:39:04,419 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-08-18 17:39:04,419 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-08-18 17:39:04,419 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-08-18 17:39:04,419 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-08-18 17:39:04,419 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-08-18 17:39:04,419 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-08-18 17:39:04,420 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-08-18 17:39:04,420 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-08-18 17:39:04,420 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-08-18 17:39:04,420 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-08-18 17:39:04,420 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-08-18 17:39:04,420 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-08-18 17:39:04,421 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-08-18 17:39:04,421 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-08-18 17:39:04,421 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-08-18 17:39:04,421 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-08-18 17:39:04,421 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry
[2020-08-18 17:39:04,421 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-08-18 17:39:04,422 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-08-18 17:39:04,422 INFO  L130     BoogieDeclarations]: Found specification of procedure startSystem
[2020-08-18 17:39:04,422 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-08-18 17:39:04,422 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base
[2020-08-18 17:39:04,422 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterLevel
[2020-08-18 17:39:04,422 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor
[2020-08-18 17:39:04,422 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-08-18 17:39:04,423 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-08-18 17:39:04,423 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-08-18 17:39:04,423 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-08-18 17:39:04,423 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-08-18 17:39:05,546 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-08-18 17:39:05,547 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-08-18 17:39:05,556 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:39:05 BoogieIcfgContainer
[2020-08-18 17:39:05,556 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-08-18 17:39:05,559 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-08-18 17:39:05,560 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-08-18 17:39:05,563 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-08-18 17:39:05,563 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 05:39:03" (1/3) ...
[2020-08-18 17:39:05,564 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5722ea7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:39:05, skipping insertion in model container
[2020-08-18 17:39:05,565 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:39:04" (2/3) ...
[2020-08-18 17:39:05,565 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5722ea7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:39:05, skipping insertion in model container
[2020-08-18 17:39:05,566 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:39:05" (3/3) ...
[2020-08-18 17:39:05,567 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec1_product38.cil.c
[2020-08-18 17:39:05,578 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-08-18 17:39:05,587 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-08-18 17:39:05,602 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-08-18 17:39:05,634 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-08-18 17:39:05,634 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-08-18 17:39:05,634 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-08-18 17:39:05,634 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-08-18 17:39:05,635 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-08-18 17:39:05,635 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-08-18 17:39:05,635 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-08-18 17:39:05,635 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-08-18 17:39:05,657 INFO  L276                IsEmpty]: Start isEmpty. Operand 170 states.
[2020-08-18 17:39:05,667 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2020-08-18 17:39:05,667 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 17:39:05,668 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]
[2020-08-18 17:39:05,669 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 17:39:05,675 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 17:39:05,676 INFO  L82        PathProgramCache]: Analyzing trace with hash 1406508770, now seen corresponding path program 1 times
[2020-08-18 17:39:05,683 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 17:39:05,684 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260171945]
[2020-08-18 17:39:05,684 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 17:39:05,964 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:06,390 WARN  L193               SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 17:39:06,392 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 17:39:06,402 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:06,446 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 17:39:06,447 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:06,449 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 17:39:06,452 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:06,453 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 17:39:06,454 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:06,463 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 17:39:06,464 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:06,467 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32
[2020-08-18 17:39:06,472 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:06,475 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2020-08-18 17:39:06,476 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:06,500 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 17:39:06,507 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260171945]
[2020-08-18 17:39:06,509 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 17:39:06,510 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-08-18 17:39:06,511 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680661696]
[2020-08-18 17:39:06,517 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-08-18 17:39:06,518 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 17:39:06,532 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-08-18 17:39:06,534 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-08-18 17:39:06,536 INFO  L87              Difference]: Start difference. First operand 170 states. Second operand 3 states.
[2020-08-18 17:39:07,691 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 17:39:07,691 INFO  L93              Difference]: Finished difference Result 296 states and 388 transitions.
[2020-08-18 17:39:07,692 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-08-18 17:39:07,694 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 46
[2020-08-18 17:39:07,694 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 17:39:07,709 INFO  L225             Difference]: With dead ends: 296
[2020-08-18 17:39:07,709 INFO  L226             Difference]: Without dead ends: 160
[2020-08-18 17:39:07,714 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-08-18 17:39:07,734 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 160 states.
[2020-08-18 17:39:07,802 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 127.
[2020-08-18 17:39:07,803 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 127 states.
[2020-08-18 17:39:07,805 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 149 transitions.
[2020-08-18 17:39:07,807 INFO  L78                 Accepts]: Start accepts. Automaton has 127 states and 149 transitions. Word has length 46
[2020-08-18 17:39:07,807 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 17:39:07,808 INFO  L479      AbstractCegarLoop]: Abstraction has 127 states and 149 transitions.
[2020-08-18 17:39:07,808 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-08-18 17:39:07,808 INFO  L276                IsEmpty]: Start isEmpty. Operand 127 states and 149 transitions.
[2020-08-18 17:39:07,812 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2020-08-18 17:39:07,812 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 17:39:07,812 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]
[2020-08-18 17:39:07,813 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-08-18 17:39:07,813 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 17:39:07,813 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 17:39:07,813 INFO  L82        PathProgramCache]: Analyzing trace with hash 297997714, now seen corresponding path program 1 times
[2020-08-18 17:39:07,814 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 17:39:07,814 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414725737]
[2020-08-18 17:39:07,814 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 17:39:07,853 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:08,171 WARN  L193               SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 17:39:08,173 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 17:39:08,177 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:08,195 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 17:39:08,196 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:08,197 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 17:39:08,198 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:08,199 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 17:39:08,199 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:08,201 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 17:39:08,201 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:08,202 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33
[2020-08-18 17:39:08,203 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:08,204 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39
[2020-08-18 17:39:08,205 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:08,212 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 17:39:08,213 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414725737]
[2020-08-18 17:39:08,213 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 17:39:08,213 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-08-18 17:39:08,214 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774628317]
[2020-08-18 17:39:08,215 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-08-18 17:39:08,216 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 17:39:08,216 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-08-18 17:39:08,216 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-08-18 17:39:08,216 INFO  L87              Difference]: Start difference. First operand 127 states and 149 transitions. Second operand 4 states.
[2020-08-18 17:39:08,615 WARN  L193               SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-18 17:39:09,339 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 17:39:09,339 INFO  L93              Difference]: Finished difference Result 225 states and 275 transitions.
[2020-08-18 17:39:09,340 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-08-18 17:39:09,340 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 47
[2020-08-18 17:39:09,340 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 17:39:09,343 INFO  L225             Difference]: With dead ends: 225
[2020-08-18 17:39:09,343 INFO  L226             Difference]: Without dead ends: 144
[2020-08-18 17:39:09,345 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-08-18 17:39:09,346 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 144 states.
[2020-08-18 17:39:09,389 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118.
[2020-08-18 17:39:09,389 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 118 states.
[2020-08-18 17:39:09,390 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 137 transitions.
[2020-08-18 17:39:09,390 INFO  L78                 Accepts]: Start accepts. Automaton has 118 states and 137 transitions. Word has length 47
[2020-08-18 17:39:09,391 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 17:39:09,391 INFO  L479      AbstractCegarLoop]: Abstraction has 118 states and 137 transitions.
[2020-08-18 17:39:09,391 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-08-18 17:39:09,391 INFO  L276                IsEmpty]: Start isEmpty. Operand 118 states and 137 transitions.
[2020-08-18 17:39:09,399 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2020-08-18 17:39:09,399 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 17:39:09,400 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]
[2020-08-18 17:39:09,400 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-08-18 17:39:09,400 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 17:39:09,400 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 17:39:09,401 INFO  L82        PathProgramCache]: Analyzing trace with hash -1416539958, now seen corresponding path program 1 times
[2020-08-18 17:39:09,401 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 17:39:09,401 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568346605]
[2020-08-18 17:39:09,401 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 17:39:09,473 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:09,819 WARN  L193               SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 17:39:09,820 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 17:39:09,840 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:09,892 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 17:39:09,893 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:09,894 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 17:39:09,895 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:09,897 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 17:39:09,898 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:09,912 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 17:39:09,913 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:09,915 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2020-08-18 17:39:09,915 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:09,918 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44
[2020-08-18 17:39:09,919 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:09,926 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 17:39:09,927 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568346605]
[2020-08-18 17:39:09,927 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 17:39:09,927 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-08-18 17:39:09,928 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34094482]
[2020-08-18 17:39:09,929 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-08-18 17:39:09,930 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 17:39:09,931 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-08-18 17:39:09,931 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2020-08-18 17:39:09,932 INFO  L87              Difference]: Start difference. First operand 118 states and 137 transitions. Second operand 8 states.
[2020-08-18 17:39:10,285 WARN  L193               SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-18 17:39:10,578 WARN  L193               SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 17:39:10,874 WARN  L193               SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 17:39:11,107 WARN  L193               SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 17:39:12,219 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 17:39:12,219 INFO  L93              Difference]: Finished difference Result 238 states and 293 transitions.
[2020-08-18 17:39:12,222 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-08-18 17:39:12,222 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 52
[2020-08-18 17:39:12,223 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 17:39:12,227 INFO  L225             Difference]: With dead ends: 238
[2020-08-18 17:39:12,228 INFO  L226             Difference]: Without dead ends: 144
[2020-08-18 17:39:12,229 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-08-18 17:39:12,229 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 144 states.
[2020-08-18 17:39:12,270 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118.
[2020-08-18 17:39:12,270 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 118 states.
[2020-08-18 17:39:12,271 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 136 transitions.
[2020-08-18 17:39:12,271 INFO  L78                 Accepts]: Start accepts. Automaton has 118 states and 136 transitions. Word has length 52
[2020-08-18 17:39:12,272 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 17:39:12,272 INFO  L479      AbstractCegarLoop]: Abstraction has 118 states and 136 transitions.
[2020-08-18 17:39:12,272 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-08-18 17:39:12,272 INFO  L276                IsEmpty]: Start isEmpty. Operand 118 states and 136 transitions.
[2020-08-18 17:39:12,273 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 66
[2020-08-18 17:39:12,274 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 17:39:12,274 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]
[2020-08-18 17:39:12,274 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-08-18 17:39:12,274 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 17:39:12,275 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 17:39:12,275 INFO  L82        PathProgramCache]: Analyzing trace with hash -819223945, now seen corresponding path program 1 times
[2020-08-18 17:39:12,275 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 17:39:12,275 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986734413]
[2020-08-18 17:39:12,275 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 17:39:12,301 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:12,528 WARN  L193               SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 17:39:12,529 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 17:39:12,548 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:12,564 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 17:39:12,564 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:12,566 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 17:39:12,566 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:12,568 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 17:39:12,568 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:12,570 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 17:39:12,570 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:12,580 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2020-08-18 17:39:12,581 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:12,584 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 17:39:12,584 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:12,595 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 17:39:12,596 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:12,597 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2020-08-18 17:39:12,598 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:12,599 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57
[2020-08-18 17:39:12,599 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:12,609 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 17:39:12,609 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986734413]
[2020-08-18 17:39:12,609 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 17:39:12,609 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-08-18 17:39:12,610 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120744727]
[2020-08-18 17:39:12,610 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-08-18 17:39:12,610 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 17:39:12,611 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-08-18 17:39:12,611 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2020-08-18 17:39:12,611 INFO  L87              Difference]: Start difference. First operand 118 states and 136 transitions. Second operand 6 states.
[2020-08-18 17:39:12,925 WARN  L193               SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-18 17:39:14,035 WARN  L193               SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-18 17:39:14,654 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 17:39:14,655 INFO  L93              Difference]: Finished difference Result 335 states and 415 transitions.
[2020-08-18 17:39:14,655 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-08-18 17:39:14,656 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 65
[2020-08-18 17:39:14,656 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 17:39:14,659 INFO  L225             Difference]: With dead ends: 335
[2020-08-18 17:39:14,659 INFO  L226             Difference]: Without dead ends: 241
[2020-08-18 17:39:14,660 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110
[2020-08-18 17:39:14,661 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 241 states.
[2020-08-18 17:39:14,708 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 198.
[2020-08-18 17:39:14,709 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 198 states.
[2020-08-18 17:39:14,710 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 225 transitions.
[2020-08-18 17:39:14,711 INFO  L78                 Accepts]: Start accepts. Automaton has 198 states and 225 transitions. Word has length 65
[2020-08-18 17:39:14,711 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 17:39:14,711 INFO  L479      AbstractCegarLoop]: Abstraction has 198 states and 225 transitions.
[2020-08-18 17:39:14,711 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-08-18 17:39:14,711 INFO  L276                IsEmpty]: Start isEmpty. Operand 198 states and 225 transitions.
[2020-08-18 17:39:14,713 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 80
[2020-08-18 17:39:14,713 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 17:39:14,713 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]
[2020-08-18 17:39:14,714 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-08-18 17:39:14,714 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 17:39:14,714 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 17:39:14,714 INFO  L82        PathProgramCache]: Analyzing trace with hash -1180966768, now seen corresponding path program 1 times
[2020-08-18 17:39:14,714 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 17:39:14,715 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016231570]
[2020-08-18 17:39:14,715 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 17:39:14,741 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:14,979 WARN  L193               SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 17:39:14,980 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 17:39:14,990 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:15,003 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 17:39:15,004 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:15,005 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 17:39:15,006 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:15,007 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 17:39:15,007 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:15,008 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 17:39:15,009 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:15,027 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2020-08-18 17:39:15,029 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:15,032 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 17:39:15,033 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:15,035 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 17:39:15,036 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:15,037 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-18 17:39:15,037 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:15,038 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16
[2020-08-18 17:39:15,039 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:15,040 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65
[2020-08-18 17:39:15,041 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:15,052 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71
[2020-08-18 17:39:15,053 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:15,065 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 17:39:15,065 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016231570]
[2020-08-18 17:39:15,065 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 17:39:15,066 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-08-18 17:39:15,066 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902796288]
[2020-08-18 17:39:15,066 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-08-18 17:39:15,067 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 17:39:15,067 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-08-18 17:39:15,067 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2020-08-18 17:39:15,067 INFO  L87              Difference]: Start difference. First operand 198 states and 225 transitions. Second operand 8 states.
[2020-08-18 17:39:15,455 WARN  L193               SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-18 17:39:16,604 WARN  L193               SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 17:39:16,859 WARN  L193               SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 17:39:17,101 WARN  L193               SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 17:39:17,316 WARN  L193               SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-18 17:39:17,595 WARN  L193               SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-18 17:39:18,591 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 17:39:18,591 INFO  L93              Difference]: Finished difference Result 592 states and 731 transitions.
[2020-08-18 17:39:18,592 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-08-18 17:39:18,593 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 79
[2020-08-18 17:39:18,593 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 17:39:18,596 INFO  L225             Difference]: With dead ends: 592
[2020-08-18 17:39:18,597 INFO  L226             Difference]: Without dead ends: 418
[2020-08-18 17:39:18,598 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210
[2020-08-18 17:39:18,599 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 418 states.
[2020-08-18 17:39:18,677 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 351.
[2020-08-18 17:39:18,677 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 351 states.
[2020-08-18 17:39:18,679 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 400 transitions.
[2020-08-18 17:39:18,680 INFO  L78                 Accepts]: Start accepts. Automaton has 351 states and 400 transitions. Word has length 79
[2020-08-18 17:39:18,680 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 17:39:18,680 INFO  L479      AbstractCegarLoop]: Abstraction has 351 states and 400 transitions.
[2020-08-18 17:39:18,680 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-08-18 17:39:18,680 INFO  L276                IsEmpty]: Start isEmpty. Operand 351 states and 400 transitions.
[2020-08-18 17:39:18,682 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 84
[2020-08-18 17:39:18,682 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 17:39:18,682 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]
[2020-08-18 17:39:18,683 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-08-18 17:39:18,683 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 17:39:18,683 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 17:39:18,683 INFO  L82        PathProgramCache]: Analyzing trace with hash 1165038356, now seen corresponding path program 1 times
[2020-08-18 17:39:18,683 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 17:39:18,684 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001328660]
[2020-08-18 17:39:18,684 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 17:39:18,707 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:18,990 WARN  L193               SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 17:39:18,991 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 17:39:19,000 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:19,012 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 17:39:19,013 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:19,015 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 17:39:19,015 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:19,016 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 17:39:19,017 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:19,018 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 17:39:19,019 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:19,047 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30
[2020-08-18 17:39:19,048 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:19,058 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2020-08-18 17:39:19,060 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:19,063 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 17:39:19,064 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:19,068 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 17:39:19,069 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:19,071 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-18 17:39:19,072 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:19,073 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16
[2020-08-18 17:39:19,073 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:19,075 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69
[2020-08-18 17:39:19,076 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:19,077 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75
[2020-08-18 17:39:19,078 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:19,099 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 17:39:19,100 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001328660]
[2020-08-18 17:39:19,100 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 17:39:19,100 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2020-08-18 17:39:19,101 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099312557]
[2020-08-18 17:39:19,101 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-08-18 17:39:19,101 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 17:39:19,102 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-08-18 17:39:19,102 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2020-08-18 17:39:19,102 INFO  L87              Difference]: Start difference. First operand 351 states and 400 transitions. Second operand 9 states.
[2020-08-18 17:39:19,460 WARN  L193               SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-18 17:39:20,518 WARN  L193               SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 17:39:20,740 WARN  L193               SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-18 17:39:21,012 WARN  L193               SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 17:39:21,260 WARN  L193               SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 17:39:21,510 WARN  L193               SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-18 17:39:22,483 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 17:39:22,483 INFO  L93              Difference]: Finished difference Result 460 states and 580 transitions.
[2020-08-18 17:39:22,484 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2020-08-18 17:39:22,484 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 83
[2020-08-18 17:39:22,485 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 17:39:22,489 INFO  L225             Difference]: With dead ends: 460
[2020-08-18 17:39:22,489 INFO  L226             Difference]: Without dead ends: 457
[2020-08-18 17:39:22,490 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342
[2020-08-18 17:39:22,491 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 457 states.
[2020-08-18 17:39:22,554 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 351.
[2020-08-18 17:39:22,555 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 351 states.
[2020-08-18 17:39:22,557 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 399 transitions.
[2020-08-18 17:39:22,557 INFO  L78                 Accepts]: Start accepts. Automaton has 351 states and 399 transitions. Word has length 83
[2020-08-18 17:39:22,558 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 17:39:22,558 INFO  L479      AbstractCegarLoop]: Abstraction has 351 states and 399 transitions.
[2020-08-18 17:39:22,558 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-08-18 17:39:22,558 INFO  L276                IsEmpty]: Start isEmpty. Operand 351 states and 399 transitions.
[2020-08-18 17:39:22,559 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 85
[2020-08-18 17:39:22,560 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 17:39:22,560 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]
[2020-08-18 17:39:22,560 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-08-18 17:39:22,560 INFO  L427      AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 17:39:22,560 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 17:39:22,561 INFO  L82        PathProgramCache]: Analyzing trace with hash 1066260182, now seen corresponding path program 1 times
[2020-08-18 17:39:22,561 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 17:39:22,561 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977163071]
[2020-08-18 17:39:22,561 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 17:39:22,585 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:22,784 WARN  L193               SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 17:39:22,784 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 17:39:22,789 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:22,805 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 17:39:22,806 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:22,807 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 17:39:22,807 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:22,808 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 17:39:22,808 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:22,810 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 17:39:22,810 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:22,821 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30
[2020-08-18 17:39:22,821 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:22,829 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2020-08-18 17:39:22,831 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:22,838 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 17:39:22,840 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:22,864 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 17:39:22,868 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:22,900 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-18 17:39:22,901 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:22,903 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16
[2020-08-18 17:39:22,904 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:22,905 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70
[2020-08-18 17:39:22,906 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:22,907 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76
[2020-08-18 17:39:22,907 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:22,948 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 17:39:22,949 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977163071]
[2020-08-18 17:39:22,949 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 17:39:22,949 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2020-08-18 17:39:22,950 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969374783]
[2020-08-18 17:39:22,950 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-08-18 17:39:22,951 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 17:39:22,952 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-08-18 17:39:22,956 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2020-08-18 17:39:22,956 INFO  L87              Difference]: Start difference. First operand 351 states and 399 transitions. Second operand 9 states.
[2020-08-18 17:39:23,762 WARN  L193               SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 17:39:24,004 WARN  L193               SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-18 17:39:24,254 WARN  L193               SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-18 17:39:24,483 WARN  L193               SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-18 17:39:25,445 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 17:39:25,446 INFO  L93              Difference]: Finished difference Result 788 states and 970 transitions.
[2020-08-18 17:39:25,446 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-08-18 17:39:25,446 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 84
[2020-08-18 17:39:25,447 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 17:39:25,450 INFO  L225             Difference]: With dead ends: 788
[2020-08-18 17:39:25,450 INFO  L226             Difference]: Without dead ends: 461
[2020-08-18 17:39:25,451 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182
[2020-08-18 17:39:25,452 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 461 states.
[2020-08-18 17:39:25,517 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 361.
[2020-08-18 17:39:25,517 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 361 states.
[2020-08-18 17:39:25,519 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 409 transitions.
[2020-08-18 17:39:25,520 INFO  L78                 Accepts]: Start accepts. Automaton has 361 states and 409 transitions. Word has length 84
[2020-08-18 17:39:25,520 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 17:39:25,520 INFO  L479      AbstractCegarLoop]: Abstraction has 361 states and 409 transitions.
[2020-08-18 17:39:25,520 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-08-18 17:39:25,521 INFO  L276                IsEmpty]: Start isEmpty. Operand 361 states and 409 transitions.
[2020-08-18 17:39:25,522 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 85
[2020-08-18 17:39:25,522 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 17:39:25,522 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]
[2020-08-18 17:39:25,523 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2020-08-18 17:39:25,523 INFO  L427      AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 17:39:25,523 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 17:39:25,523 INFO  L82        PathProgramCache]: Analyzing trace with hash 1088892436, now seen corresponding path program 1 times
[2020-08-18 17:39:25,524 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 17:39:25,524 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824685480]
[2020-08-18 17:39:25,524 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 17:39:25,547 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:25,782 WARN  L193               SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 17:39:25,783 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 17:39:25,787 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:25,798 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 17:39:25,799 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:25,800 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 17:39:25,800 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:25,801 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 17:39:25,802 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:25,810 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 17:39:25,811 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:25,828 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30
[2020-08-18 17:39:25,828 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:25,839 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2020-08-18 17:39:25,841 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:25,844 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 17:39:25,848 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:25,851 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 17:39:25,853 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:25,878 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-18 17:39:25,879 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:25,898 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16
[2020-08-18 17:39:25,899 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:25,901 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70
[2020-08-18 17:39:25,902 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:25,903 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76
[2020-08-18 17:39:25,904 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:25,919 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 17:39:25,920 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824685480]
[2020-08-18 17:39:25,920 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 17:39:25,920 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2020-08-18 17:39:25,921 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977083649]
[2020-08-18 17:39:25,922 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-08-18 17:39:25,922 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 17:39:25,922 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-08-18 17:39:25,923 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110
[2020-08-18 17:39:25,923 INFO  L87              Difference]: Start difference. First operand 361 states and 409 transitions. Second operand 11 states.
[2020-08-18 17:39:26,404 WARN  L193               SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-18 17:39:26,648 WARN  L193               SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-18 17:39:26,862 WARN  L193               SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-18 17:39:27,428 WARN  L193               SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-18 17:39:27,670 WARN  L193               SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-18 17:39:27,913 WARN  L193               SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-18 17:39:28,995 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 17:39:28,995 INFO  L93              Difference]: Finished difference Result 812 states and 1010 transitions.
[2020-08-18 17:39:28,996 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-08-18 17:39:28,996 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 84
[2020-08-18 17:39:28,997 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 17:39:29,000 INFO  L225             Difference]: With dead ends: 812
[2020-08-18 17:39:29,000 INFO  L226             Difference]: Without dead ends: 475
[2020-08-18 17:39:29,002 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306
[2020-08-18 17:39:29,003 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 475 states.
[2020-08-18 17:39:29,069 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 369.
[2020-08-18 17:39:29,069 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 369 states.
[2020-08-18 17:39:29,071 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 417 transitions.
[2020-08-18 17:39:29,072 INFO  L78                 Accepts]: Start accepts. Automaton has 369 states and 417 transitions. Word has length 84
[2020-08-18 17:39:29,072 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 17:39:29,072 INFO  L479      AbstractCegarLoop]: Abstraction has 369 states and 417 transitions.
[2020-08-18 17:39:29,073 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-08-18 17:39:29,073 INFO  L276                IsEmpty]: Start isEmpty. Operand 369 states and 417 transitions.
[2020-08-18 17:39:29,074 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 85
[2020-08-18 17:39:29,074 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 17:39:29,074 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]
[2020-08-18 17:39:29,075 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2020-08-18 17:39:29,075 INFO  L427      AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 17:39:29,075 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 17:39:29,075 INFO  L82        PathProgramCache]: Analyzing trace with hash 2114384435, now seen corresponding path program 1 times
[2020-08-18 17:39:29,075 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 17:39:29,076 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988493624]
[2020-08-18 17:39:29,076 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 17:39:29,098 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:29,333 WARN  L193               SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 17:39:29,334 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 17:39:29,344 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:29,358 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 17:39:29,358 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:29,361 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 17:39:29,361 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:29,363 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 17:39:29,365 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:29,367 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 17:39:29,368 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:29,379 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30
[2020-08-18 17:39:29,380 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:29,390 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2020-08-18 17:39:29,392 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:29,406 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 17:39:29,408 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:29,421 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 17:39:29,422 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:29,433 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-18 17:39:29,434 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:29,445 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16
[2020-08-18 17:39:29,445 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:29,448 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70
[2020-08-18 17:39:29,448 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:29,449 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76
[2020-08-18 17:39:29,450 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:39:29,461 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 17:39:29,462 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988493624]
[2020-08-18 17:39:29,462 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 17:39:29,462 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-08-18 17:39:29,463 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959133606]
[2020-08-18 17:39:29,463 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-08-18 17:39:29,463 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 17:39:29,463 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-08-18 17:39:29,464 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2020-08-18 17:39:29,464 INFO  L87              Difference]: Start difference. First operand 369 states and 417 transitions. Second operand 7 states.
[2020-08-18 17:39:29,830 WARN  L193               SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-18 17:39:30,514 WARN  L193               SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-18 17:39:32,307 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 17:39:32,307 INFO  L93              Difference]: Finished difference Result 1154 states and 1484 transitions.
[2020-08-18 17:39:32,308 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-08-18 17:39:32,308 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 84
[2020-08-18 17:39:32,308 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 17:39:32,313 INFO  L225             Difference]: With dead ends: 1154
[2020-08-18 17:39:32,313 INFO  L226             Difference]: Without dead ends: 809
[2020-08-18 17:39:32,315 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210
[2020-08-18 17:39:32,316 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 809 states.
[2020-08-18 17:39:32,410 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 689.
[2020-08-18 17:39:32,410 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 689 states.
[2020-08-18 17:39:32,413 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 811 transitions.
[2020-08-18 17:39:32,414 INFO  L78                 Accepts]: Start accepts. Automaton has 689 states and 811 transitions. Word has length 84
[2020-08-18 17:39:32,414 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 17:39:32,414 INFO  L479      AbstractCegarLoop]: Abstraction has 689 states and 811 transitions.
[2020-08-18 17:39:32,415 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-08-18 17:39:32,415 INFO  L276                IsEmpty]: Start isEmpty. Operand 689 states and 811 transitions.
[2020-08-18 17:39:32,416 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 89
[2020-08-18 17:39:32,417 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 17:39:32,417 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]
[2020-08-18 17:39:32,417 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2020-08-18 17:39:32,417 INFO  L427      AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 17:39:32,417 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 17:39:32,418 INFO  L82        PathProgramCache]: Analyzing trace with hash 166319437, now seen corresponding path program 1 times
[2020-08-18 17:39:32,418 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 17:39:32,418 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97649187]
[2020-08-18 17:39:32,418 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 17:39:32,468 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-08-18 17:39:32,471 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-08-18 17:39:32,471 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-08-18 17:39:32,476 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2020-08-18 17:39:32,500 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 05:39:32 BoogieIcfgContainer
[2020-08-18 17:39:32,500 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-08-18 17:39:32,502 INFO  L168              Benchmark]: Toolchain (without parser) took 28848.88 ms. Allocated memory was 140.0 MB in the beginning and 595.1 MB in the end (delta: 455.1 MB). Free memory was 102.1 MB in the beginning and 458.5 MB in the end (delta: -356.4 MB). Peak memory consumption was 98.7 MB. Max. memory is 7.1 GB.
[2020-08-18 17:39:32,503 INFO  L168              Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-08-18 17:39:32,504 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 595.66 ms. Allocated memory was 140.0 MB in the beginning and 200.8 MB in the end (delta: 60.8 MB). Free memory was 101.9 MB in the beginning and 170.4 MB in the end (delta: -68.5 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB.
[2020-08-18 17:39:32,504 INFO  L168              Benchmark]: Boogie Preprocessor took 89.92 ms. Allocated memory is still 200.8 MB. Free memory was 170.4 MB in the beginning and 166.1 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB.
[2020-08-18 17:39:32,505 INFO  L168              Benchmark]: RCFGBuilder took 1215.29 ms. Allocated memory was 200.8 MB in the beginning and 235.9 MB in the end (delta: 35.1 MB). Free memory was 166.1 MB in the beginning and 196.4 MB in the end (delta: -30.4 MB). Peak memory consumption was 83.2 MB. Max. memory is 7.1 GB.
[2020-08-18 17:39:32,506 INFO  L168              Benchmark]: TraceAbstraction took 26940.86 ms. Allocated memory was 235.9 MB in the beginning and 595.1 MB in the end (delta: 359.1 MB). Free memory was 196.4 MB in the beginning and 458.5 MB in the end (delta: -262.1 MB). Peak memory consumption was 97.1 MB. Max. memory is 7.1 GB.
[2020-08-18 17:39:32,509 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 595.66 ms. Allocated memory was 140.0 MB in the beginning and 200.8 MB in the end (delta: 60.8 MB). Free memory was 101.9 MB in the beginning and 170.4 MB in the end (delta: -68.5 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 89.92 ms. Allocated memory is still 200.8 MB. Free memory was 170.4 MB in the beginning and 166.1 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 1215.29 ms. Allocated memory was 200.8 MB in the beginning and 235.9 MB in the end (delta: 35.1 MB). Free memory was 166.1 MB in the beginning and 196.4 MB in the end (delta: -30.4 MB). Peak memory consumption was 83.2 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 26940.86 ms. Allocated memory was 235.9 MB in the beginning and 595.1 MB in the end (delta: 359.1 MB). Free memory was 196.4 MB in the beginning and 458.5 MB in the end (delta: -262.1 MB). Peak memory consumption was 97.1 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 837]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L40]               int cleanupTimeShifts  =    4;
[L377]              static struct __ACC__ERR *head  =    (struct __ACC__ERR *)0;
[L580]              int pumpRunning  =    0;
[L581]              int systemActive  =    1;
[L843]              int waterLevel  =    1;
[L844]              int methaneLevelCritical  =    0;
[L121]              int retValue_acc ;
[L122]              int tmp ;
[L126]  FCALL       select_helpers()
[L127]  FCALL       select_features()
[L128]  CALL, EXPR  valid_product()
[L170]              int retValue_acc ;
[L173]              retValue_acc = 1
[L174]              return (retValue_acc);
[L128]  RET, EXPR   valid_product()
[L128]              tmp = valid_product()
[L130]  COND TRUE   \read(tmp)
[L132]  FCALL       setup()
[L133]  CALL        runTest()
[L112]  CALL        test()
[L767]              int splverifierCounter ;
[L768]              int tmp ;
[L769]              int tmp___0 ;
[L770]              int tmp___1 ;
[L771]              int tmp___2 ;
[L774]              splverifierCounter = 0
[L776]  COND TRUE   1
[L778]  COND TRUE   splverifierCounter < 4
[L784]              tmp = __VERIFIER_nondet_int()
[L786]  COND TRUE   \read(tmp)
[L788]  CALL        waterRise()
[L861]  COND TRUE   waterLevel < 2
[L862]              waterLevel = waterLevel + 1
[L788]  RET         waterRise()
[L794]              tmp___0 = __VERIFIER_nondet_int()
[L796]  COND TRUE   \read(tmp___0)
[L798]  CALL        changeMethaneLevel()
[L873]  COND FALSE  !(\read(methaneLevelCritical))
[L876]              methaneLevelCritical = 1
[L798]  RET         changeMethaneLevel()
[L804]              tmp___2 = __VERIFIER_nondet_int()
[L806]  COND FALSE  !(\read(tmp___2))
[L812]              tmp___1 = __VERIFIER_nondet_int()
[L814]  COND TRUE   \read(tmp___1)
[L821]  CALL        timeShift()
[L587]  COND FALSE  !(\read(pumpRunning))
[L594]  COND TRUE   \read(systemActive)
[L596]  CALL        processEnvironment()
[L642]              int tmp ;
[L645]  COND FALSE  !(\read(pumpRunning))
[L660]  CALL        processEnvironment__wrappee__highWaterSensor()
[L616]              int tmp ;
[L619]  COND TRUE   ! pumpRunning
[L621]  CALL, EXPR  isHighWaterLevel()
[L739]              int retValue_acc ;
[L740]              int tmp ;
[L741]              int tmp___0 ;
[L745]  CALL, EXPR  isHighWaterSensorDry()
[L923]              int retValue_acc ;
[L926]  COND FALSE  !(waterLevel < 2)
[L930]              retValue_acc = 0
[L931]              return (retValue_acc);
[L745]  RET, EXPR   isHighWaterSensorDry()
[L745]              tmp = isHighWaterSensorDry()
[L747]  COND FALSE  !(\read(tmp))
[L750]              tmp___0 = 1
[L752]              retValue_acc = tmp___0
[L753]              return (retValue_acc);
[L621]  RET, EXPR   isHighWaterLevel()
[L621]              tmp = isHighWaterLevel()
[L623]  COND TRUE   \read(tmp)
[L625]  CALL        activatePump()
[L670]              pumpRunning = 1
[L625]  RET         activatePump()
[L660]  RET         processEnvironment__wrappee__highWaterSensor()
[L596]  RET         processEnvironment()
[L602]  CALL        __utac_acc__Specification1_spec__1()
[L183]              int tmp ;
[L184]              int tmp___0 ;
[L188]  CALL, EXPR  isMethaneLevelCritical()
[L882]              int retValue_acc ;
[L885]              retValue_acc = methaneLevelCritical
[L886]              return (retValue_acc);
[L188]  RET, EXPR   isMethaneLevelCritical()
[L188]              tmp = isMethaneLevelCritical()
[L190]  COND TRUE   \read(tmp)
[L192]  CALL, EXPR  isPumpRunning()
[L694]              int retValue_acc ;
[L697]              retValue_acc = pumpRunning
[L698]              return (retValue_acc);
[L192]  RET, EXPR   isPumpRunning()
[L192]              tmp___0 = isPumpRunning()
[L194]  COND TRUE   \read(tmp___0)
[L196]  CALL        __automaton_fail()
[L837]              __VERIFIER_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 39 procedures, 229 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 26.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 22.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1048 SDtfs, 1883 SDslu, 982 SDs, 0 SdLazy, 4943 SolverSat, 1282 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 320 GetRequests, 222 SyntacticMatches, 4 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 9.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=689occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 627 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 712 NumberOfCodeBlocks, 712 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 615 ConstructedInterpolants, 0 QuantifiedInterpolants, 190312 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...