/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product52.cil.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 16:44:36,890 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 16:44:36,895 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 16:44:36,941 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 16:44:36,943 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 16:44:36,955 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 16:44:36,958 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 16:44:36,960 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 16:44:36,961 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 16:44:36,962 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 16:44:36,964 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 16:44:36,970 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 16:44:36,970 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 16:44:36,971 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 16:44:36,975 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 16:44:36,976 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 16:44:36,977 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 16:44:36,981 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 16:44:36,985 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 16:44:36,987 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 16:44:36,993 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 16:44:36,996 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 16:44:36,997 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 16:44:36,998 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 16:44:37,004 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 16:44:37,005 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 16:44:37,005 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 16:44:37,008 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 16:44:37,009 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 16:44:37,010 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 16:44:37,010 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 16:44:37,011 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 16:44:37,012 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 16:44:37,013 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 16:44:37,015 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 16:44:37,015 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 16:44:37,016 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 16:44:37,016 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 16:44:37,016 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 16:44:37,017 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 16:44:37,019 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 16:44:37,020 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-09-24 16:44:37,047 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 16:44:37,047 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 16:44:37,048 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 16:44:37,049 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 16:44:37,049 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 16:44:37,049 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 16:44:37,049 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 16:44:37,050 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 16:44:37,050 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 16:44:37,050 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 16:44:37,050 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 16:44:37,050 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 16:44:37,051 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 16:44:37,051 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 16:44:37,051 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 16:44:37,051 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 16:44:37,052 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 16:44:37,052 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 16:44:37,052 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 16:44:37,052 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 16:44:37,052 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 16:44:37,053 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 16:44:37,053 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 16:44:37,053 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 16:44:37,053 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 16:44:37,054 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 16:44:37,054 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 16:44:37,054 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 16:44:37,054 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 16:44:37,054 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true;
[2020-09-24 16:44:37,502 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 16:44:37,530 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 16:44:37,537 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 16:44:37,539 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 16:44:37,540 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 16:44:37,542 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product52.cil.c
[2020-09-24 16:44:37,634 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f79f4661/e7cc67a10a614331bb3d6442cef0f789/FLAG53bf3c9f9
[2020-09-24 16:44:38,252 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 16:44:38,253 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product52.cil.c
[2020-09-24 16:44:38,273 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f79f4661/e7cc67a10a614331bb3d6442cef0f789/FLAG53bf3c9f9
[2020-09-24 16:44:38,534 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f79f4661/e7cc67a10a614331bb3d6442cef0f789
[2020-09-24 16:44:38,548 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 16:44:38,553 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 16:44:38,554 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 16:44:38,554 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 16:44:38,559 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 16:44:38,560 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:44:38" (1/1) ...
[2020-09-24 16:44:38,565 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e33fb78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:38, skipping insertion in model container
[2020-09-24 16:44:38,565 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:44:38" (1/1) ...
[2020-09-24 16:44:38,573 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 16:44:38,632 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 16:44:39,066 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 16:44:39,081 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 16:44:39,292 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 16:44:39,334 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 16:44:39,334 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:39 WrapperNode
[2020-09-24 16:44:39,335 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 16:44:39,336 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 16:44:39,336 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 16:44:39,336 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 16:44:39,352 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:39" (1/1) ...
[2020-09-24 16:44:39,353 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:39" (1/1) ...
[2020-09-24 16:44:39,374 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:39" (1/1) ...
[2020-09-24 16:44:39,375 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:39" (1/1) ...
[2020-09-24 16:44:39,410 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:39" (1/1) ...
[2020-09-24 16:44:39,422 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:39" (1/1) ...
[2020-09-24 16:44:39,428 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:39" (1/1) ...
[2020-09-24 16:44:39,436 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 16:44:39,437 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 16:44:39,437 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 16:44:39,437 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 16:44:39,439 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:39" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 16:44:39,517 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 16:44:39,518 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 16:44:39,518 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-09-24 16:44:39,518 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-09-24 16:44:39,519 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-09-24 16:44:39,519 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-09-24 16:44:39,520 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-09-24 16:44:39,520 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-09-24 16:44:39,520 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-09-24 16:44:39,521 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry
[2020-09-24 16:44:39,521 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry
[2020-09-24 16:44:39,521 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-09-24 16:44:39,521 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base
[2020-09-24 16:44:39,522 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor
[2020-09-24 16:44:39,522 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-09-24 16:44:39,523 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-09-24 16:44:39,523 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-09-24 16:44:39,523 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-09-24 16:44:39,523 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-09-24 16:44:39,524 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-09-24 16:44:39,524 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterLevel
[2020-09-24 16:44:39,524 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterLevel
[2020-09-24 16:44:39,524 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopSystem
[2020-09-24 16:44:39,524 INFO  L138     BoogieDeclarations]: Found implementation of procedure startSystem
[2020-09-24 16:44:39,526 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-09-24 16:44:39,527 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-09-24 16:44:39,527 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-09-24 16:44:39,527 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-09-24 16:44:39,527 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-09-24 16:44:39,527 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-09-24 16:44:39,528 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 16:44:39,528 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1
[2020-09-24 16:44:39,528 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-09-24 16:44:39,528 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-09-24 16:44:39,528 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-09-24 16:44:39,528 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-09-24 16:44:39,528 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-09-24 16:44:39,529 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-09-24 16:44:39,529 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-09-24 16:44:39,529 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-09-24 16:44:39,529 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-09-24 16:44:39,529 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-09-24 16:44:39,529 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 16:44:39,529 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 16:44:39,530 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-09-24 16:44:39,530 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-09-24 16:44:39,530 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-09-24 16:44:39,530 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-09-24 16:44:39,530 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-09-24 16:44:39,530 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-09-24 16:44:39,531 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-09-24 16:44:39,531 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry
[2020-09-24 16:44:39,531 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry
[2020-09-24 16:44:39,531 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-24 16:44:39,532 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-09-24 16:44:39,532 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-09-24 16:44:39,532 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-09-24 16:44:39,532 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-09-24 16:44:39,533 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-09-24 16:44:39,533 INFO  L130     BoogieDeclarations]: Found specification of procedure stopSystem
[2020-09-24 16:44:39,533 INFO  L130     BoogieDeclarations]: Found specification of procedure startSystem
[2020-09-24 16:44:39,533 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1
[2020-09-24 16:44:39,533 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-09-24 16:44:39,533 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base
[2020-09-24 16:44:39,533 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterLevel
[2020-09-24 16:44:39,534 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor
[2020-09-24 16:44:39,534 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterLevel
[2020-09-24 16:44:39,534 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-09-24 16:44:39,534 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-09-24 16:44:39,534 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-09-24 16:44:39,534 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-09-24 16:44:39,535 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-09-24 16:44:39,536 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-09-24 16:44:39,536 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-09-24 16:44:39,537 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-09-24 16:44:39,537 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-09-24 16:44:39,537 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-09-24 16:44:39,537 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 16:44:39,538 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-09-24 16:44:39,538 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-09-24 16:44:39,538 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-09-24 16:44:39,538 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-09-24 16:44:39,539 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-09-24 16:44:39,539 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-09-24 16:44:39,539 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-09-24 16:44:39,539 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-09-24 16:44:39,540 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-09-24 16:44:39,540 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-24 16:44:39,540 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-09-24 16:44:39,540 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-09-24 16:44:39,540 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-09-24 16:44:39,540 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-09-24 16:44:39,540 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-09-24 16:44:39,541 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-09-24 16:44:39,541 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-09-24 16:44:39,541 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 16:44:39,541 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-09-24 16:44:39,541 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 16:44:40,699 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 16:44:40,699 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-09-24 16:44:40,707 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:44:40 BoogieIcfgContainer
[2020-09-24 16:44:40,707 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 16:44:40,708 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 16:44:40,708 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 16:44:40,712 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 16:44:40,713 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:44:38" (1/3) ...
[2020-09-24 16:44:40,715 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f05ec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:44:40, skipping insertion in model container
[2020-09-24 16:44:40,715 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:39" (2/3) ...
[2020-09-24 16:44:40,716 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f05ec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:44:40, skipping insertion in model container
[2020-09-24 16:44:40,717 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:44:40" (3/3) ...
[2020-09-24 16:44:40,719 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec1_product52.cil.c
[2020-09-24 16:44:40,731 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 16:44:40,745 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 16:44:40,768 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 16:44:40,808 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 16:44:40,808 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 16:44:40,808 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 16:44:40,808 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 16:44:40,809 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 16:44:40,809 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 16:44:40,809 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 16:44:40,809 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 16:44:40,839 INFO  L276                IsEmpty]: Start isEmpty. Operand 328 states.
[2020-09-24 16:44:40,857 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 143
[2020-09-24 16:44:40,857 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:44:40,859 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 16:44:40,859 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:44:40,865 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:44:40,866 INFO  L82        PathProgramCache]: Analyzing trace with hash 254159831, now seen corresponding path program 1 times
[2020-09-24 16:44:40,876 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:44:40,877 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726655895]
[2020-09-24 16:44:40,877 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:44:41,198 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:44:41,434 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:44:41,622 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:44:43,214 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:44:44,312 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:44:46,077 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:44:59,584 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:44:59,584 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 173
[2020-09-24 16:44:59,585 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 5
[2020-09-24 16:44:59,586 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 18370
[2020-09-24 16:44:59,587 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:44:59,597 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-09-24 16:44:59,597 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 80
[2020-09-24 16:44:59,597 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 60
[2020-09-24 16:44:59,598 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 11
[2020-09-24 16:45:00,039 WARN  L193               SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-09-24 16:45:00,042 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 16:45:00,080 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:45:00,118 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:45:00,355 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:45:00,355 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 85
[2020-09-24 16:45:00,355 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:45:00,355 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 273
[2020-09-24 16:45:00,356 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:45:00,356 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:45:00,356 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:45:00,356 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 76
[2020-09-24 16:45:00,356 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:45:00,414 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-09-24 16:45:00,416 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:45:00,417 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:45:00,420 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:45:00,421 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:45:00,421 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:45:00,421 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 16:45:00,421 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:45:00,421 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:45:00,422 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:45:00,422 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 16:45:00,422 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:45:00,424 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-09-24 16:45:00,425 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:45:00,426 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:45:00,430 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:45:00,430 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:45:00,430 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:45:00,430 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 16:45:00,431 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:45:00,431 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:45:00,431 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:45:00,431 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 16:45:00,431 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:45:00,433 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-09-24 16:45:00,434 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:45:00,436 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:45:00,443 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:45:00,443 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:45:00,444 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:45:00,444 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-09-24 16:45:00,444 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:45:00,444 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:45:00,444 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:45:00,445 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 16:45:00,445 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:45:00,447 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-09-24 16:45:00,447 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:45:00,449 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:45:00,452 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:45:00,452 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:45:00,452 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:45:00,452 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 16:45:00,453 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:45:00,453 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:45:00,453 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:45:00,453 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 16:45:00,453 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:45:00,455 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120
[2020-09-24 16:45:00,456 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:45:00,457 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:45:00,459 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:45:00,459 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:45:00,459 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:45:00,460 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:45:00,460 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:45:00,460 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:45:00,460 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 16:45:00,460 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:45:00,461 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:45:00,462 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130
[2020-09-24 16:45:00,463 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:45:00,464 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:45:00,466 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:45:00,466 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:45:00,466 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:45:00,467 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:45:00,467 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:45:00,467 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:45:00,467 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 16:45:00,467 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:45:00,468 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:45:00,498 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 16:45:00,499 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726655895]
[2020-09-24 16:45:00,501 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 16:45:00,501 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-24 16:45:00,502 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815527506]
[2020-09-24 16:45:00,511 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-24 16:45:00,512 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 16:45:00,529 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-24 16:45:00,531 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-24 16:45:00,533 INFO  L87              Difference]: Start difference. First operand 328 states. Second operand 4 states.
[2020-09-24 16:45:01,134 WARN  L193               SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 16:45:03,524 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 16:45:03,525 INFO  L93              Difference]: Finished difference Result 705 states and 852 transitions.
[2020-09-24 16:45:03,525 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-09-24 16:45:03,527 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 142
[2020-09-24 16:45:03,529 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 16:45:03,551 INFO  L225             Difference]: With dead ends: 705
[2020-09-24 16:45:03,551 INFO  L226             Difference]: Without dead ends: 494
[2020-09-24 16:45:03,558 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-09-24 16:45:03,579 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 494 states.
[2020-09-24 16:45:03,708 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 422.
[2020-09-24 16:45:03,710 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 422 states.
[2020-09-24 16:45:03,714 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 471 transitions.
[2020-09-24 16:45:03,716 INFO  L78                 Accepts]: Start accepts. Automaton has 422 states and 471 transitions. Word has length 142
[2020-09-24 16:45:03,717 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 16:45:03,717 INFO  L479      AbstractCegarLoop]: Abstraction has 422 states and 471 transitions.
[2020-09-24 16:45:03,717 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-24 16:45:03,717 INFO  L276                IsEmpty]: Start isEmpty. Operand 422 states and 471 transitions.
[2020-09-24 16:45:03,723 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 157
[2020-09-24 16:45:03,723 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:45:03,724 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 16:45:03,724 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 16:45:03,724 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:45:03,725 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:45:03,725 INFO  L82        PathProgramCache]: Analyzing trace with hash 67683551, now seen corresponding path program 1 times
[2020-09-24 16:45:03,725 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:45:03,725 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287063438]
[2020-09-24 16:45:03,726 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:45:03,778 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:45:03,867 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:45:03,955 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:45:04,142 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:45:04,504 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:45:08,479 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:45:09,302 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:45:09,460 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:45:09,545 FATAL L256   erpolLogProxyWrapper]: Now shrinking...