/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_spec3_product44.cil.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 16:51:39,415 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 16:51:39,419 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 16:51:39,447 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 16:51:39,448 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 16:51:39,449 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 16:51:39,451 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 16:51:39,453 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 16:51:39,455 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 16:51:39,456 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 16:51:39,457 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 16:51:39,458 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 16:51:39,459 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 16:51:39,460 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 16:51:39,461 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 16:51:39,463 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 16:51:39,464 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 16:51:39,465 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 16:51:39,467 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 16:51:39,469 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 16:51:39,471 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 16:51:39,475 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 16:51:39,479 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 16:51:39,480 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 16:51:39,482 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 16:51:39,483 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 16:51:39,483 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 16:51:39,484 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 16:51:39,485 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 16:51:39,486 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 16:51:39,486 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 16:51:39,487 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 16:51:39,488 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 16:51:39,489 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 16:51:39,490 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 16:51:39,490 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 16:51:39,491 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 16:51:39,491 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 16:51:39,492 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 16:51:39,493 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 16:51:39,494 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 16:51:39,495 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 16:51:39,521 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 16:51:39,521 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 16:51:39,523 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 16:51:39,523 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 16:51:39,524 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 16:51:39,524 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 16:51:39,524 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 16:51:39,524 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 16:51:39,524 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 16:51:39,525 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 16:51:39,525 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 16:51:39,525 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 16:51:39,525 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 16:51:39,525 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 16:51:39,526 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 16:51:39,526 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 16:51:39,526 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 16:51:39,526 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 16:51:39,527 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 16:51:39,527 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 16:51:39,527 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 16:51:39,527 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 16:51:39,527 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 16:51:39,528 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 16:51:39,528 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 16:51:39,528 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 16:51:39,528 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 16:51:39,529 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 16:51:39,529 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 16:51:39,529 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 16:51:39,977 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 16:51:39,994 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 16:51:39,999 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 16:51:40,001 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 16:51:40,001 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 16:51:40,003 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product44.cil.c
[2020-09-24 16:51:40,088 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b1ee5f0c/be46b92c719a4456917560952811f25e/FLAGcf017ea91
[2020-09-24 16:51:40,718 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 16:51:40,719 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product44.cil.c
[2020-09-24 16:51:40,736 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b1ee5f0c/be46b92c719a4456917560952811f25e/FLAGcf017ea91
[2020-09-24 16:51:40,989 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b1ee5f0c/be46b92c719a4456917560952811f25e
[2020-09-24 16:51:41,002 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 16:51:41,008 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 16:51:41,009 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 16:51:41,009 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 16:51:41,014 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 16:51:41,015 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:51:40" (1/1) ...
[2020-09-24 16:51:41,019 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e6ef35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:41, skipping insertion in model container
[2020-09-24 16:51:41,020 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:51:40" (1/1) ...
[2020-09-24 16:51:41,029 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 16:51:41,106 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 16:51:41,473 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 16:51:41,493 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 16:51:41,715 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 16:51:41,768 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 16:51:41,768 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:41 WrapperNode
[2020-09-24 16:51:41,769 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 16:51:41,769 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 16:51:41,770 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 16:51:41,770 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 16:51:41,785 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:41" (1/1) ...
[2020-09-24 16:51:41,785 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:41" (1/1) ...
[2020-09-24 16:51:41,807 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:41" (1/1) ...
[2020-09-24 16:51:41,807 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:41" (1/1) ...
[2020-09-24 16:51:41,839 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:41" (1/1) ...
[2020-09-24 16:51:41,850 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:41" (1/1) ...
[2020-09-24 16:51:41,856 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:41" (1/1) ...
[2020-09-24 16:51:41,865 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 16:51:41,866 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 16:51:41,866 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 16:51:41,866 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 16:51:41,867 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:41" (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 16:51:41,950 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 16:51:41,950 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 16:51:41,951 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-09-24 16:51:41,951 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-09-24 16:51:41,951 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-09-24 16:51:41,951 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-09-24 16:51:41,952 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-09-24 16:51:41,952 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 16:51:41,953 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1
[2020-09-24 16:51:41,954 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-09-24 16:51:41,954 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-09-24 16:51:41,954 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-09-24 16:51:41,954 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-09-24 16:51:41,954 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-09-24 16:51:41,955 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-09-24 16:51:41,955 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry
[2020-09-24 16:51:41,956 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-09-24 16:51:41,956 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-09-24 16:51:41,956 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-09-24 16:51:41,956 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-09-24 16:51:41,957 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-09-24 16:51:41,957 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-09-24 16:51:41,958 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-09-24 16:51:41,958 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-09-24 16:51:41,960 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-09-24 16:51:41,961 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-09-24 16:51:41,961 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-09-24 16:51:41,962 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-09-24 16:51:41,962 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base
[2020-09-24 16:51:41,962 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-09-24 16:51:41,962 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor
[2020-09-24 16:51:41,962 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-09-24 16:51:41,962 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-09-24 16:51:41,963 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-09-24 16:51:41,963 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-09-24 16:51:41,963 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-09-24 16:51:41,963 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterLevel
[2020-09-24 16:51:41,963 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopSystem
[2020-09-24 16:51:41,963 INFO  L138     BoogieDeclarations]: Found implementation of procedure startSystem
[2020-09-24 16:51:41,964 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-09-24 16:51:41,964 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 16:51:41,964 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 16:51:41,966 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-09-24 16:51:41,966 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-09-24 16:51:41,966 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-09-24 16:51:41,968 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-09-24 16:51:41,968 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-09-24 16:51:41,968 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-09-24 16:51:41,968 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-09-24 16:51:41,968 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-09-24 16:51:41,968 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-09-24 16:51:41,969 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-09-24 16:51:41,969 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-09-24 16:51:41,969 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-09-24 16:51:41,969 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-09-24 16:51:41,969 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 16:51:41,970 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-09-24 16:51:41,970 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-09-24 16:51:41,970 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-09-24 16:51:41,970 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-09-24 16:51:41,970 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1
[2020-09-24 16:51:41,971 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-09-24 16:51:41,971 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-09-24 16:51:41,971 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry
[2020-09-24 16:51:41,971 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-24 16:51:41,971 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-09-24 16:51:41,971 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-09-24 16:51:41,972 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-09-24 16:51:41,972 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-09-24 16:51:41,972 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-09-24 16:51:41,972 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-09-24 16:51:41,973 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-09-24 16:51:41,974 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-09-24 16:51:41,974 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-09-24 16:51:41,975 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-09-24 16:51:41,975 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-24 16:51:41,975 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-09-24 16:51:41,975 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-09-24 16:51:41,976 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-09-24 16:51:41,976 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-09-24 16:51:41,976 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-09-24 16:51:41,976 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-09-24 16:51:41,976 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-09-24 16:51:41,976 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-09-24 16:51:41,977 INFO  L130     BoogieDeclarations]: Found specification of procedure stopSystem
[2020-09-24 16:51:41,977 INFO  L130     BoogieDeclarations]: Found specification of procedure startSystem
[2020-09-24 16:51:41,977 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-09-24 16:51:41,977 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base
[2020-09-24 16:51:41,977 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterLevel
[2020-09-24 16:51:41,977 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor
[2020-09-24 16:51:41,978 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-09-24 16:51:41,978 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 16:51:41,978 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-09-24 16:51:41,978 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 16:51:43,197 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 16:51:43,197 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-09-24 16:51:43,205 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:51:43 BoogieIcfgContainer
[2020-09-24 16:51:43,205 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 16:51:43,207 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 16:51:43,207 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 16:51:43,210 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 16:51:43,211 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:51:40" (1/3) ...
[2020-09-24 16:51:43,212 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af48e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:51:43, skipping insertion in model container
[2020-09-24 16:51:43,212 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:41" (2/3) ...
[2020-09-24 16:51:43,212 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af48e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:51:43, skipping insertion in model container
[2020-09-24 16:51:43,213 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:51:43" (3/3) ...
[2020-09-24 16:51:43,215 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec3_product44.cil.c
[2020-09-24 16:51:43,228 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 16:51:43,239 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 16:51:43,263 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 16:51:43,297 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 16:51:43,298 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 16:51:43,298 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 16:51:43,298 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 16:51:43,298 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 16:51:43,298 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 16:51:43,299 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 16:51:43,299 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 16:51:43,330 INFO  L276                IsEmpty]: Start isEmpty. Operand 319 states.
[2020-09-24 16:51:43,350 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 154
[2020-09-24 16:51:43,350 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:51:43,352 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 16:51:43,352 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:51:43,360 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:51:43,361 INFO  L82        PathProgramCache]: Analyzing trace with hash -266008754, now seen corresponding path program 1 times
[2020-09-24 16:51:43,373 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:51:43,373 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585711851]
[2020-09-24 16:51:43,374 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:51:43,692 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:51:43,905 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:51:44,130 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:51:45,655 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:51:50,013 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:51:50,014 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 186
[2020-09-24 16:51:50,014 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-24 16:51:50,014 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6308
[2020-09-24 16:51:50,016 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:51:50,017 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:51:50,017 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 129
[2020-09-24 16:51:50,017 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:51:50,018 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-09-24 16:51:50,469 WARN  L193               SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-09-24 16:51:50,475 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 16:51:50,502 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:51:50,514 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:51:50,637 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:51:50,638 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 85
[2020-09-24 16:51:50,638 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:51:50,639 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 134
[2020-09-24 16:51:50,639 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:51:50,640 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:51:50,640 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:51:50,640 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:51:50,641 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:51:50,721 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-09-24 16:51:50,722 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:51:50,724 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:51:50,726 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:51:50,726 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:51:50,727 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:51:50,727 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 16:51:50,727 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:51:50,728 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:51:50,728 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:51:50,728 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:51:50,730 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-24 16:51:50,732 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-09-24 16:51:50,733 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:51:50,734 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:51:50,737 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:51:50,737 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:51:50,737 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:51:50,738 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:51:50,738 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:51:50,738 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:51:50,739 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:51:50,739 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:51:50,739 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:51:50,742 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-09-24 16:51:50,743 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:51:50,744 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:51:50,750 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:51:50,750 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:51:50,751 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:51:50,751 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-24 16:51:50,752 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:51:50,752 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:51:50,752 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:51:50,752 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:51:50,752 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:51:50,755 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-09-24 16:51:50,756 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:51:50,757 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:51:50,759 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:51:50,759 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:51:50,760 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:51:50,760 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:51:50,760 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:51:50,760 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:51:50,761 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:51:50,761 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:51:50,761 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:51:50,763 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2020-09-24 16:51:50,764 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:51:50,766 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:51:50,768 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:51:50,768 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:51:50,768 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:51:50,769 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 16:51:50,769 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:51:50,769 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:51:50,769 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 16:51:50,769 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:51:50,770 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:51:50,772 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131
[2020-09-24 16:51:50,775 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:51:50,777 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:51:50,780 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:51:50,780 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:51:50,781 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:51:50,781 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 16:51:50,781 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:51:50,781 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:51:50,782 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 16:51:50,782 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:51:50,782 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:51:50,784 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141
[2020-09-24 16:51:50,788 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:51:50,789 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:51:50,791 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:51:50,792 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:51:50,792 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:51:50,792 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 16:51:50,792 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:51:50,793 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:51:50,793 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 16:51:50,793 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:51:50,793 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:51:50,827 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 16:51:50,828 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585711851]
[2020-09-24 16:51:50,831 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 16:51:50,831 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-09-24 16:51:50,832 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410799053]
[2020-09-24 16:51:50,842 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-09-24 16:51:50,843 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 16:51:50,862 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-09-24 16:51:50,863 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 16:51:50,866 INFO  L87              Difference]: Start difference. First operand 319 states. Second operand 3 states.
[2020-09-24 16:51:52,398 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 16:51:52,398 INFO  L93              Difference]: Finished difference Result 506 states and 598 transitions.
[2020-09-24 16:51:52,399 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-09-24 16:51:52,401 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 153
[2020-09-24 16:51:52,403 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 16:51:52,425 INFO  L225             Difference]: With dead ends: 506
[2020-09-24 16:51:52,425 INFO  L226             Difference]: Without dead ends: 312
[2020-09-24 16:51:52,432 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 16:51:52,503 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 312 states.
[2020-09-24 16:51:52,594 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 268.
[2020-09-24 16:51:52,599 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 268 states.
[2020-09-24 16:51:52,602 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 290 transitions.
[2020-09-24 16:51:52,608 INFO  L78                 Accepts]: Start accepts. Automaton has 268 states and 290 transitions. Word has length 153
[2020-09-24 16:51:52,609 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 16:51:52,610 INFO  L479      AbstractCegarLoop]: Abstraction has 268 states and 290 transitions.
[2020-09-24 16:51:52,610 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-09-24 16:51:52,610 INFO  L276                IsEmpty]: Start isEmpty. Operand 268 states and 290 transitions.
[2020-09-24 16:51:52,615 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 155
[2020-09-24 16:51:52,615 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:51:52,616 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]
[2020-09-24 16:51:52,616 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 16:51:52,617 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:51:52,617 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:51:52,617 INFO  L82        PathProgramCache]: Analyzing trace with hash 579021377, now seen corresponding path program 1 times
[2020-09-24 16:51:52,617 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:51:52,618 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911906982]
[2020-09-24 16:51:52,618 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:51:52,676 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:51:52,734 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:51:52,833 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:51:54,466 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:52:00,180 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:52:00,180 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 187
[2020-09-24 16:52:00,181 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-24 16:52:00,181 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7500
[2020-09-24 16:52:00,181 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:52:00,182 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 16
[2020-09-24 16:52:00,182 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 78
[2020-09-24 16:52:00,183 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 93
[2020-09-24 16:52:00,183 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:52:00,609 WARN  L193               SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-09-24 16:52:00,611 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 16:52:00,650 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:52:00,685 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:52:00,926 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:52:00,926 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 85
[2020-09-24 16:52:00,927 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:52:00,927 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 275
[2020-09-24 16:52:00,927 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:52:00,927 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:52:00,928 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:52:00,928 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 74
[2020-09-24 16:52:00,928 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:52:00,967 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-09-24 16:52:00,968 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:52:00,969 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:52:00,971 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:52:00,972 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:52:00,972 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:52:00,972 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 16:52:00,972 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:52:00,973 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:52:00,973 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:52:00,973 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 16:52:00,973 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:52:00,974 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-09-24 16:52:00,975 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:52:00,976 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:52:00,978 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:52:00,979 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:52:00,979 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:52:00,979 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:52:00,979 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:52:00,979 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:52:00,980 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:52:00,980 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 16:52:00,980 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:52:00,981 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-09-24 16:52:00,982 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:52:00,984 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:52:00,990 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:52:00,990 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:52:00,991 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:52:00,991 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-24 16:52:00,991 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:52:00,991 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:52:00,991 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:52:00,992 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 16:52:00,992 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:52:00,994 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-09-24 16:52:00,995 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:52:00,996 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:52:00,998 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:52:00,998 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:52:00,999 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:52:00,999 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 16:52:00,999 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:52:00,999 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:52:01,000 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:52:01,000 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 16:52:01,000 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:52:01,001 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122
[2020-09-24 16:52:01,002 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:52:01,004 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:52:01,006 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:52:01,007 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:52:01,007 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:52:01,007 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 16:52:01,007 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:52:01,008 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:52:01,008 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:52:01,008 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 16:52:01,008 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:52:01,010 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132
[2020-09-24 16:52:01,011 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:52:01,013 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:52:01,019 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:52:01,019 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:52:01,019 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:52:01,019 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-24 16:52:01,020 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:52:01,020 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 16:52:01,020 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:52:01,020 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 16:52:01,020 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:52:01,057 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142
[2020-09-24 16:52:01,058 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:52:01,059 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:52:01,061 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:52:01,061 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:52:01,061 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:52:01,061 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:52:01,062 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:52:01,062 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:52:01,062 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 16:52:01,062 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:52:01,063 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:52:01,098 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 16:52:01,104 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911906982]
[2020-09-24 16:52:01,105 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 16:52:01,105 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-09-24 16:52:01,105 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255426373]
[2020-09-24 16:52:01,108 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-09-24 16:52:01,109 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 16:52:01,109 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-09-24 16:52:01,110 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2020-09-24 16:52:01,110 INFO  L87              Difference]: Start difference. First operand 268 states and 290 transitions. Second operand 8 states.
[2020-09-24 16:52:01,602 WARN  L193               SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 16:52:03,168 WARN  L193               SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-09-24 16:52:03,555 WARN  L193               SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 192
[2020-09-24 16:52:03,960 WARN  L193               SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 16:52:04,339 WARN  L193               SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-09-24 16:52:04,663 WARN  L193               SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-09-24 16:52:04,952 WARN  L193               SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-09-24 16:52:05,284 WARN  L193               SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 16:52:06,513 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 16:52:06,513 INFO  L93              Difference]: Finished difference Result 625 states and 736 transitions.
[2020-09-24 16:52:06,515 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-09-24 16:52:06,515 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 154
[2020-09-24 16:52:06,516 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 16:52:06,523 INFO  L225             Difference]: With dead ends: 625
[2020-09-24 16:52:06,523 INFO  L226             Difference]: Without dead ends: 467
[2020-09-24 16:52:06,526 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240
[2020-09-24 16:52:06,528 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 467 states.
[2020-09-24 16:52:06,613 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 418.
[2020-09-24 16:52:06,613 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 418 states.
[2020-09-24 16:52:06,616 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 469 transitions.
[2020-09-24 16:52:06,616 INFO  L78                 Accepts]: Start accepts. Automaton has 418 states and 469 transitions. Word has length 154
[2020-09-24 16:52:06,617 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 16:52:06,617 INFO  L479      AbstractCegarLoop]: Abstraction has 418 states and 469 transitions.
[2020-09-24 16:52:06,618 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-09-24 16:52:06,618 INFO  L276                IsEmpty]: Start isEmpty. Operand 418 states and 469 transitions.
[2020-09-24 16:52:06,623 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 160
[2020-09-24 16:52:06,624 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:52:06,624 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]
[2020-09-24 16:52:06,624 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 16:52:06,625 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:52:06,625 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:52:06,625 INFO  L82        PathProgramCache]: Analyzing trace with hash 535060799, now seen corresponding path program 1 times
[2020-09-24 16:52:06,625 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:52:06,626 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220810631]
[2020-09-24 16:52:06,626 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:52:06,678 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:52:06,748 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:52:06,839 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:52:06,985 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:52:11,909 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:52:12,637 FATAL L256   erpolLogProxyWrapper]: Now shrinking...