/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_spec4_product47.cil.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 16:55:27,371 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 16:55:27,376 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 16:55:27,419 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 16:55:27,421 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 16:55:27,433 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 16:55:27,434 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 16:55:27,438 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 16:55:27,440 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 16:55:27,443 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 16:55:27,444 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 16:55:27,448 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 16:55:27,448 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 16:55:27,451 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 16:55:27,454 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 16:55:27,456 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 16:55:27,457 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 16:55:27,459 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 16:55:27,460 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 16:55:27,467 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 16:55:27,470 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 16:55:27,471 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 16:55:27,472 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 16:55:27,473 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 16:55:27,478 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 16:55:27,478 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 16:55:27,478 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 16:55:27,482 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 16:55:27,482 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 16:55:27,484 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 16:55:27,484 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 16:55:27,485 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 16:55:27,486 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 16:55:27,487 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 16:55:27,489 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 16:55:27,489 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 16:55:27,489 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 16:55:27,490 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 16:55:27,490 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 16:55:27,491 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 16:55:27,492 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 16:55:27,493 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 16:55:27,541 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 16:55:27,542 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 16:55:27,544 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 16:55:27,544 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 16:55:27,544 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 16:55:27,545 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 16:55:27,545 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 16:55:27,545 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 16:55:27,546 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 16:55:27,546 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 16:55:27,547 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 16:55:27,547 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 16:55:27,547 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 16:55:27,548 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 16:55:27,548 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 16:55:27,548 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 16:55:27,548 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 16:55:27,549 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 16:55:27,549 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 16:55:27,549 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 16:55:27,549 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 16:55:27,549 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 16:55:27,550 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 16:55:27,550 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 16:55:27,550 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 16:55:27,550 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 16:55:27,550 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 16:55:27,551 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 16:55:27,551 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 16:55:27,551 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 16:55:27,981 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 16:55:27,999 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 16:55:28,003 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 16:55:28,005 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 16:55:28,006 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 16:55:28,007 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product47.cil.c
[2020-09-24 16:55:28,085 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f955a38b/b8d9c1d962954ee4897d5d7a943bd0f1/FLAG860c2d91f
[2020-09-24 16:55:28,749 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 16:55:28,750 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product47.cil.c
[2020-09-24 16:55:28,767 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f955a38b/b8d9c1d962954ee4897d5d7a943bd0f1/FLAG860c2d91f
[2020-09-24 16:55:28,948 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f955a38b/b8d9c1d962954ee4897d5d7a943bd0f1
[2020-09-24 16:55:28,963 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 16:55:28,970 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 16:55:28,974 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 16:55:28,974 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 16:55:28,978 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 16:55:28,979 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:55:28" (1/1) ...
[2020-09-24 16:55:28,984 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 24.09 04:55:28, skipping insertion in model container
[2020-09-24 16:55:28,984 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:55:28" (1/1) ...
[2020-09-24 16:55:28,994 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 16:55:29,075 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 16:55:29,471 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 16:55:29,487 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 16:55:29,666 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 16:55:29,706 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 16:55:29,707 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:29 WrapperNode
[2020-09-24 16:55:29,707 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 16:55:29,708 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 16:55:29,708 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 16:55:29,709 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 16:55:29,726 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:29" (1/1) ...
[2020-09-24 16:55:29,726 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:29" (1/1) ...
[2020-09-24 16:55:29,752 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:29" (1/1) ...
[2020-09-24 16:55:29,752 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:29" (1/1) ...
[2020-09-24 16:55:29,801 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:29" (1/1) ...
[2020-09-24 16:55:29,820 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:29" (1/1) ...
[2020-09-24 16:55:29,825 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:29" (1/1) ...
[2020-09-24 16:55:29,846 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 16:55:29,847 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 16:55:29,847 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 16:55:29,847 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 16:55:29,851 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:29" (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 16:55:29,948 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 16:55:29,949 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 16:55:29,949 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-09-24 16:55:29,950 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-09-24 16:55:29,950 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-09-24 16:55:29,950 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-09-24 16:55:29,950 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-09-24 16:55:29,951 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 16:55:29,951 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-09-24 16:55:29,953 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-09-24 16:55:29,953 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base
[2020-09-24 16:55:29,953 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery
[2020-09-24 16:55:29,953 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-09-24 16:55:29,953 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor
[2020-09-24 16:55:29,954 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-09-24 16:55:29,954 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-09-24 16:55:29,954 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-09-24 16:55:29,954 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-09-24 16:55:29,954 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-09-24 16:55:29,956 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterLevel
[2020-09-24 16:55:29,956 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopSystem
[2020-09-24 16:55:29,956 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-09-24 16:55:29,956 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-09-24 16:55:29,956 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-09-24 16:55:29,956 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-09-24 16:55:29,957 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-09-24 16:55:29,957 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-09-24 16:55:29,957 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1
[2020-09-24 16:55:29,957 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-09-24 16:55:29,957 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-09-24 16:55:29,957 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-09-24 16:55:29,958 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-09-24 16:55:29,958 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-09-24 16:55:29,958 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-09-24 16:55:29,958 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-09-24 16:55:29,958 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-09-24 16:55:29,958 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-09-24 16:55:29,958 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-09-24 16:55:29,958 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-09-24 16:55:29,958 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry
[2020-09-24 16:55:29,959 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 16:55:29,960 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 16:55:29,963 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-09-24 16:55:29,963 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-09-24 16:55:29,964 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-09-24 16:55:29,965 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-09-24 16:55:29,965 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-09-24 16:55:29,965 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-09-24 16:55:29,965 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-09-24 16:55:29,966 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-09-24 16:55:29,966 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-09-24 16:55:29,966 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-09-24 16:55:29,966 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-09-24 16:55:29,967 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-09-24 16:55:29,967 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-09-24 16:55:29,967 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 16:55:29,967 INFO  L130     BoogieDeclarations]: Found specification of procedure stopSystem
[2020-09-24 16:55:29,967 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-09-24 16:55:29,968 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-09-24 16:55:29,968 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-09-24 16:55:29,968 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry
[2020-09-24 16:55:29,968 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-09-24 16:55:29,968 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-09-24 16:55:29,968 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-09-24 16:55:29,969 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1
[2020-09-24 16:55:29,969 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-09-24 16:55:29,969 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base
[2020-09-24 16:55:29,969 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterLevel
[2020-09-24 16:55:29,969 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery
[2020-09-24 16:55:29,969 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-09-24 16:55:29,970 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor
[2020-09-24 16:55:29,971 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-24 16:55:29,972 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-09-24 16:55:29,972 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-09-24 16:55:29,973 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-09-24 16:55:29,973 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-09-24 16:55:29,974 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-09-24 16:55:29,974 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-09-24 16:55:29,974 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-09-24 16:55:29,975 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-09-24 16:55:29,975 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-09-24 16:55:29,975 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-24 16:55:29,975 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-09-24 16:55:29,975 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-09-24 16:55:29,976 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-09-24 16:55:29,976 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-09-24 16:55:29,976 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-09-24 16:55:29,976 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-09-24 16:55:29,976 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-09-24 16:55:29,976 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-09-24 16:55:29,976 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-09-24 16:55:29,977 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 16:55:29,977 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-09-24 16:55:29,977 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 16:55:31,194 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 16:55:31,195 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-09-24 16:55:31,203 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:55:31 BoogieIcfgContainer
[2020-09-24 16:55:31,203 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 16:55:31,205 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 16:55:31,205 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 16:55:31,208 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 16:55:31,209 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:55:28" (1/3) ...
[2020-09-24 16:55:31,210 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56cf603f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:55:31, skipping insertion in model container
[2020-09-24 16:55:31,210 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:29" (2/3) ...
[2020-09-24 16:55:31,210 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56cf603f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:55:31, skipping insertion in model container
[2020-09-24 16:55:31,211 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:55:31" (3/3) ...
[2020-09-24 16:55:31,213 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec4_product47.cil.c
[2020-09-24 16:55:31,225 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 16:55:31,238 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 16:55:31,261 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 16:55:31,295 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 16:55:31,295 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 16:55:31,295 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 16:55:31,295 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 16:55:31,295 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 16:55:31,296 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 16:55:31,296 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 16:55:31,296 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 16:55:31,325 INFO  L276                IsEmpty]: Start isEmpty. Operand 321 states.
[2020-09-24 16:55:31,344 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 143
[2020-09-24 16:55:31,344 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:55:31,346 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 16:55:31,346 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:55:31,354 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:55:31,355 INFO  L82        PathProgramCache]: Analyzing trace with hash 1304799548, now seen corresponding path program 1 times
[2020-09-24 16:55:31,367 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:55:31,367 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371243540]
[2020-09-24 16:55:31,368 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:55:31,671 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:31,880 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:32,096 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:33,645 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:34,763 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:36,322 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:49,691 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:49,691 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 173
[2020-09-24 16:55:49,692 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 5
[2020-09-24 16:55:49,692 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 18010
[2020-09-24 16:55:49,693 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:49,693 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-09-24 16:55:49,694 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 79
[2020-09-24 16:55:49,694 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 61
[2020-09-24 16:55:49,694 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:55:50,100 WARN  L193               SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-09-24 16:55:50,103 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 16:55:50,158 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:50,205 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:50,395 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:50,396 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 85
[2020-09-24 16:55:50,396 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:50,396 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 236
[2020-09-24 16:55:50,397 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:50,397 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:55:50,397 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:55:50,398 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 75
[2020-09-24 16:55:50,398 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:55:50,489 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-09-24 16:55:50,492 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:50,494 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:50,498 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:50,498 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:55:50,498 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:50,499 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-24 16:55:50,499 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:50,499 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:55:50,500 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:55:50,500 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 16:55:50,501 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:55:50,504 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-09-24 16:55:50,509 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:50,511 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:50,514 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:50,514 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:55:50,515 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:50,515 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 16:55:50,515 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:50,515 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:55:50,516 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:55:50,516 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 16:55:50,516 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:55:50,518 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-09-24 16:55:50,520 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:50,523 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:50,543 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:50,544 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:55:50,544 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:50,544 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 22
[2020-09-24 16:55:50,545 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:50,545 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:55:50,545 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:55:50,545 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 16:55:50,545 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:55:50,547 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-09-24 16:55:50,548 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:50,550 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:50,552 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:50,553 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:55:50,553 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:50,553 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 16:55:50,553 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:50,553 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:55:50,554 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:55:50,554 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 16:55:50,554 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:55:50,556 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120
[2020-09-24 16:55:50,557 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:50,560 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:50,564 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:50,564 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:55:50,564 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:50,565 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 16:55:50,565 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:50,565 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:55:50,566 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 16:55:50,566 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:55:50,566 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:55:50,569 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130
[2020-09-24 16:55:50,570 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:50,571 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:50,573 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:50,573 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:55:50,573 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:50,574 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:55:50,574 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:50,574 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:55:50,574 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 16:55:50,575 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:55:50,575 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:55:50,655 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 16:55:50,656 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371243540]
[2020-09-24 16:55:50,658 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 16:55:50,658 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-24 16:55:50,660 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883945087]
[2020-09-24 16:55:50,668 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-24 16:55:50,668 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 16:55:50,686 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-24 16:55:50,687 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-24 16:55:50,690 INFO  L87              Difference]: Start difference. First operand 321 states. Second operand 4 states.
[2020-09-24 16:55:51,347 WARN  L193               SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 16:55:53,615 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 16:55:53,616 INFO  L93              Difference]: Finished difference Result 705 states and 854 transitions.
[2020-09-24 16:55:53,617 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-09-24 16:55:53,619 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 142
[2020-09-24 16:55:53,620 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 16:55:53,643 INFO  L225             Difference]: With dead ends: 705
[2020-09-24 16:55:53,643 INFO  L226             Difference]: Without dead ends: 495
[2020-09-24 16:55:53,650 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-09-24 16:55:53,673 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 495 states.
[2020-09-24 16:55:53,809 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 424.
[2020-09-24 16:55:53,811 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 424 states.
[2020-09-24 16:55:53,814 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 475 transitions.
[2020-09-24 16:55:53,817 INFO  L78                 Accepts]: Start accepts. Automaton has 424 states and 475 transitions. Word has length 142
[2020-09-24 16:55:53,818 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 16:55:53,818 INFO  L479      AbstractCegarLoop]: Abstraction has 424 states and 475 transitions.
[2020-09-24 16:55:53,819 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-24 16:55:53,820 INFO  L276                IsEmpty]: Start isEmpty. Operand 424 states and 475 transitions.
[2020-09-24 16:55:53,833 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 166
[2020-09-24 16:55:53,834 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:55:53,834 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 16:55:53,835 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 16:55:53,835 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:55:53,835 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:55:53,835 INFO  L82        PathProgramCache]: Analyzing trace with hash -1623007119, now seen corresponding path program 1 times
[2020-09-24 16:55:53,836 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:55:53,839 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747558137]
[2020-09-24 16:55:53,839 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:55:53,893 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:53,954 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:54,096 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:54,484 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:55,571 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:56,370 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:56,513 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:57,334 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:56:09,615 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:56:09,615 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 200
[2020-09-24 16:56:09,615 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 7
[2020-09-24 16:56:09,616 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 15719
[2020-09-24 16:56:09,616 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:56:09,616 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 16:56:09,616 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 152
[2020-09-24 16:56:09,616 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-24 16:56:09,617 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:56:09,939 WARN  L193               SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-09-24 16:56:09,941 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 16:56:09,948 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:56:09,956 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:56:10,034 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:56:10,034 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 85
[2020-09-24 16:56:10,034 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:56:10,034 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 85
[2020-09-24 16:56:10,034 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:56:10,035 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:56:10,035 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:56:10,035 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:56:10,035 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:56:10,064 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-09-24 16:56:10,065 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:56:10,066 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:56:10,067 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:56:10,068 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:56:10,068 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:56:10,068 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-24 16:56:10,068 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:56:10,068 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:56:10,069 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:56:10,069 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:56:10,069 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:56:10,070 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-09-24 16:56:10,071 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:56:10,072 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:56:10,073 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:56:10,073 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:56:10,073 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:56:10,074 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-24 16:56:10,074 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:56:10,074 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:56:10,074 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:56:10,074 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:56:10,075 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:56:10,076 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-09-24 16:56:10,076 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:56:10,077 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:56:10,080 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:56:10,081 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:56:10,081 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:56:10,081 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 16:56:10,082 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:56:10,082 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:56:10,082 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:56:10,083 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:56:10,083 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:56:10,085 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-09-24 16:56:10,086 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:56:10,087 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:56:10,088 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:56:10,089 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:56:10,089 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:56:10,089 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:56:10,090 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:56:10,090 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:56:10,090 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:56:10,091 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:56:10,091 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:56:10,099 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127
[2020-09-24 16:56:10,101 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:56:10,103 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:56:10,111 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:56:10,111 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 22
[2020-09-24 16:56:10,111 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:56:10,111 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-09-24 16:56:10,112 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:56:10,112 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 16:56:10,112 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 4
[2020-09-24 16:56:10,112 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-24 16:56:10,112 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:56:10,123 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 16:56:10,125 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:56:10,127 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:56:10,131 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:56:10,132 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 15
[2020-09-24 16:56:10,132 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:56:10,133 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-24 16:56:10,133 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:56:10,133 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 16:56:10,134 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-09-24 16:56:10,134 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 14
[2020-09-24 16:56:10,134 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:56:10,173 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 16:56:10,174 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:56:10,176 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:56:10,179 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:56:10,179 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:56:10,179 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:56:10,187 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 16:56:10,188 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:56:10,188 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:56:10,189 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:56:10,190 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 16:56:10,190 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-24 16:56:10,200 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143
[2020-09-24 16:56:10,203 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:56:10,205 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:56:10,213 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:56:10,214 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:56:10,214 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:56:10,219 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-09-24 16:56:10,219 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:56:10,222 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:56:10,222 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 16:56:10,223 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:56:10,223 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-09-24 16:56:10,228 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153
[2020-09-24 16:56:10,232 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:56:10,237 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:56:10,239 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:56:10,239 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:56:10,239 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:56:10,243 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-24 16:56:10,243 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:56:10,244 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:56:10,244 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 16:56:10,244 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:56:10,245 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:56:10,325 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 16:56:10,326 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747558137]
[2020-09-24 16:56:10,327 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 16:56:10,327 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-09-24 16:56:10,327 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384653964]
[2020-09-24 16:56:10,331 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-24 16:56:10,331 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 16:56:10,331 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-24 16:56:10,332 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2020-09-24 16:56:10,332 INFO  L87              Difference]: Start difference. First operand 424 states and 475 transitions. Second operand 7 states.
[2020-09-24 16:56:10,900 WARN  L193               SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 16:56:12,646 WARN  L193               SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-09-24 16:56:14,025 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 16:56:14,026 INFO  L93              Difference]: Finished difference Result 1162 states and 1432 transitions.
[2020-09-24 16:56:14,026 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-09-24 16:56:14,026 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 165
[2020-09-24 16:56:14,028 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 16:56:14,037 INFO  L225             Difference]: With dead ends: 1162
[2020-09-24 16:56:14,037 INFO  L226             Difference]: Without dead ends: 848
[2020-09-24 16:56:14,042 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132
[2020-09-24 16:56:14,045 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 848 states.
[2020-09-24 16:56:14,169 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 705.
[2020-09-24 16:56:14,169 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 705 states.
[2020-09-24 16:56:14,174 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 801 transitions.
[2020-09-24 16:56:14,174 INFO  L78                 Accepts]: Start accepts. Automaton has 705 states and 801 transitions. Word has length 165
[2020-09-24 16:56:14,175 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 16:56:14,175 INFO  L479      AbstractCegarLoop]: Abstraction has 705 states and 801 transitions.
[2020-09-24 16:56:14,176 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-09-24 16:56:14,176 INFO  L276                IsEmpty]: Start isEmpty. Operand 705 states and 801 transitions.
[2020-09-24 16:56:14,178 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 162
[2020-09-24 16:56:14,179 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:56:14,179 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 16:56:14,179 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 16:56:14,179 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:56:14,180 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:56:14,180 INFO  L82        PathProgramCache]: Analyzing trace with hash 720148809, now seen corresponding path program 1 times
[2020-09-24 16:56:14,180 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:56:14,180 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044751280]
[2020-09-24 16:56:14,181 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:56:14,224 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:56:14,272 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:56:15,081 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:56:15,310 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:56:17,316 FATAL L256   erpolLogProxyWrapper]: Now shrinking...