/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_product42.cil.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 16:51:32,222 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 16:51:32,226 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 16:51:32,269 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 16:51:32,271 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 16:51:32,282 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 16:51:32,283 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 16:51:32,288 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 16:51:32,291 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 16:51:32,295 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 16:51:32,296 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 16:51:32,298 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 16:51:32,298 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 16:51:32,301 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 16:51:32,304 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 16:51:32,306 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 16:51:32,308 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 16:51:32,309 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 16:51:32,311 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 16:51:32,319 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 16:51:32,321 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 16:51:32,322 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 16:51:32,324 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 16:51:32,324 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 16:51:32,329 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 16:51:32,329 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 16:51:32,330 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 16:51:32,333 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 16:51:32,333 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 16:51:32,335 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 16:51:32,336 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 16:51:32,337 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 16:51:32,337 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 16:51:32,338 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 16:51:32,339 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 16:51:32,340 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 16:51:32,340 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 16:51:32,341 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 16:51:32,341 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 16:51:32,342 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 16:51:32,343 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 16:51:32,344 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 16:51:32,394 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 16:51:32,394 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 16:51:32,397 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 16:51:32,397 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 16:51:32,397 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 16:51:32,397 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 16:51:32,398 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 16:51:32,398 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 16:51:32,398 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 16:51:32,398 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 16:51:32,400 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 16:51:32,400 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 16:51:32,400 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 16:51:32,401 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 16:51:32,401 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 16:51:32,401 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 16:51:32,401 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 16:51:32,401 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 16:51:32,402 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 16:51:32,402 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 16:51:32,402 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 16:51:32,402 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 16:51:32,403 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 16:51:32,403 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 16:51:32,403 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 16:51:32,403 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 16:51:32,403 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 16:51:32,404 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 16:51:32,404 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 16:51:32,404 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 16:51:32,843 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 16:51:32,869 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 16:51:32,875 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 16:51:32,878 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 16:51:32,878 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 16:51:32,880 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c
[2020-09-24 16:51:32,971 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55158f0be/cd02b8cba07b4c608f434f0fb023d4cd/FLAG2a735c5bb
[2020-09-24 16:51:33,633 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 16:51:33,634 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c
[2020-09-24 16:51:33,650 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55158f0be/cd02b8cba07b4c608f434f0fb023d4cd/FLAG2a735c5bb
[2020-09-24 16:51:33,862 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55158f0be/cd02b8cba07b4c608f434f0fb023d4cd
[2020-09-24 16:51:33,876 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 16:51:33,882 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 16:51:33,883 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 16:51:33,884 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 16:51:33,888 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 16:51:33,889 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:51:33" (1/1) ...
[2020-09-24 16:51:33,893 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26e5903c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:33, skipping insertion in model container
[2020-09-24 16:51:33,893 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:51:33" (1/1) ...
[2020-09-24 16:51:33,902 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 16:51:33,967 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 16:51:34,480 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 16:51:34,496 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 16:51:34,589 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 16:51:34,626 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 16:51:34,627 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:34 WrapperNode
[2020-09-24 16:51:34,627 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 16:51:34,628 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 16:51:34,628 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 16:51:34,628 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 16:51:34,644 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:34" (1/1) ...
[2020-09-24 16:51:34,645 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:34" (1/1) ...
[2020-09-24 16:51:34,666 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:34" (1/1) ...
[2020-09-24 16:51:34,667 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:34" (1/1) ...
[2020-09-24 16:51:34,702 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:34" (1/1) ...
[2020-09-24 16:51:34,715 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:34" (1/1) ...
[2020-09-24 16:51:34,720 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:34" (1/1) ...
[2020-09-24 16:51:34,728 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 16:51:34,729 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 16:51:34,729 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 16:51:34,730 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 16:51:34,735 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:34" (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 16:51:34,850 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 16:51:34,850 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 16:51:34,850 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-09-24 16:51:34,851 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-09-24 16:51:34,851 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-09-24 16:51:34,851 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-09-24 16:51:34,851 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-09-24 16:51:34,851 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 16:51:34,852 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-09-24 16:51:34,852 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-09-24 16:51:34,852 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base
[2020-09-24 16:51:34,852 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-09-24 16:51:34,852 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor
[2020-09-24 16:51:34,853 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-09-24 16:51:34,853 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-09-24 16:51:34,853 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-09-24 16:51:34,853 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-09-24 16:51:34,853 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-09-24 16:51:34,854 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterLevel
[2020-09-24 16:51:34,854 INFO  L138     BoogieDeclarations]: Found implementation of procedure startSystem
[2020-09-24 16:51:34,854 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-09-24 16:51:34,854 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-09-24 16:51:34,855 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-09-24 16:51:34,855 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-09-24 16:51:34,855 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-09-24 16:51:34,855 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-09-24 16:51:34,855 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry
[2020-09-24 16:51:34,855 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-09-24 16:51:34,856 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-09-24 16:51:34,856 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-09-24 16:51:34,856 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-09-24 16:51:34,856 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-09-24 16:51:34,856 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-09-24 16:51:34,856 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-09-24 16:51:34,857 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-09-24 16:51:34,857 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-09-24 16:51:34,857 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-09-24 16:51:34,857 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-09-24 16:51:34,857 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1
[2020-09-24 16:51:34,857 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 16:51:34,858 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 16:51:34,858 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-09-24 16:51:34,858 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-09-24 16:51:34,858 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-09-24 16:51:34,858 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-09-24 16:51:34,858 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-09-24 16:51:34,858 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-09-24 16:51:34,859 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-09-24 16:51:34,859 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-09-24 16:51:34,859 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-09-24 16:51:34,859 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-09-24 16:51:34,859 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-09-24 16:51:34,859 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-09-24 16:51:34,860 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-09-24 16:51:34,860 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 16:51:34,860 INFO  L130     BoogieDeclarations]: Found specification of procedure startSystem
[2020-09-24 16:51:34,860 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-09-24 16:51:34,860 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-09-24 16:51:34,860 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-09-24 16:51:34,861 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry
[2020-09-24 16:51:34,861 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-09-24 16:51:34,861 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-09-24 16:51:34,861 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-09-24 16:51:34,861 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1
[2020-09-24 16:51:34,861 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-09-24 16:51:34,862 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base
[2020-09-24 16:51:34,862 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterLevel
[2020-09-24 16:51:34,862 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor
[2020-09-24 16:51:34,862 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-09-24 16:51:34,862 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-24 16:51:34,862 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-09-24 16:51:34,863 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-09-24 16:51:34,863 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-09-24 16:51:34,863 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-09-24 16:51:34,863 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-09-24 16:51:34,863 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-09-24 16:51:34,863 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-09-24 16:51:34,864 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-09-24 16:51:34,864 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-09-24 16:51:34,864 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-09-24 16:51:34,864 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-09-24 16:51:34,864 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-09-24 16:51:34,864 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-24 16:51:34,865 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-09-24 16:51:34,865 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-09-24 16:51:34,865 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-09-24 16:51:34,865 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-09-24 16:51:34,865 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-09-24 16:51:34,865 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-09-24 16:51:34,866 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 16:51:34,866 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-09-24 16:51:34,866 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 16:51:36,026 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 16:51:36,026 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-09-24 16:51:36,033 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:51:36 BoogieIcfgContainer
[2020-09-24 16:51:36,034 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 16:51:36,035 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 16:51:36,035 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 16:51:36,039 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 16:51:36,039 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:51:33" (1/3) ...
[2020-09-24 16:51:36,040 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fe285be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:51:36, skipping insertion in model container
[2020-09-24 16:51:36,040 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:34" (2/3) ...
[2020-09-24 16:51:36,041 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fe285be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:51:36, skipping insertion in model container
[2020-09-24 16:51:36,041 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:51:36" (3/3) ...
[2020-09-24 16:51:36,043 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec3_product42.cil.c
[2020-09-24 16:51:36,056 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 16:51:36,069 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 16:51:36,094 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 16:51:36,130 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 16:51:36,130 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 16:51:36,131 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 16:51:36,131 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 16:51:36,131 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 16:51:36,131 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 16:51:36,131 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 16:51:36,131 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 16:51:36,163 INFO  L276                IsEmpty]: Start isEmpty. Operand 310 states.
[2020-09-24 16:51:36,182 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 154
[2020-09-24 16:51:36,183 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:51:36,184 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 16:51:36,185 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:51:36,194 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:51:36,194 INFO  L82        PathProgramCache]: Analyzing trace with hash 876604812, now seen corresponding path program 1 times
[2020-09-24 16:51:36,208 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:51:36,208 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625525990]
[2020-09-24 16:51:36,209 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:51:36,621 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:51:36,770 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:51:36,970 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:51:38,464 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:51:42,033 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:51:42,034 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 186
[2020-09-24 16:51:42,034 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-24 16:51:42,034 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5398
[2020-09-24 16:51:42,036 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:51:42,036 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:51:42,036 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 129
[2020-09-24 16:51:42,037 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:51:42,039 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-09-24 16:51:42,458 WARN  L193               SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-09-24 16:51:42,460 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 16:51:42,477 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:51:42,487 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:51:42,595 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:51:42,595 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 85
[2020-09-24 16:51:42,596 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:51:42,596 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 116
[2020-09-24 16:51:42,596 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:51:42,596 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:51:42,597 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:51:42,597 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:51:42,597 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:51:42,684 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-09-24 16:51:42,686 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:51:42,688 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:51:42,690 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:51:42,690 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:51:42,690 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:51:42,690 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:51:42,691 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:51:42,691 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:51:42,691 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:51:42,691 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:51:42,692 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:51:42,693 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-09-24 16:51:42,694 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:51:42,695 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:51:42,697 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:51:42,697 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:51:42,698 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:51:42,698 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:51:42,698 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:51:42,698 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:51:42,698 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:51:42,699 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:51:42,699 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:51:42,700 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-09-24 16:51:42,701 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:51:42,703 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:51:42,707 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:51:42,707 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:51:42,708 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:51:42,708 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-24 16:51:42,708 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:51:42,708 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:51:42,709 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:51:42,709 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:51:42,709 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:51:42,711 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-09-24 16:51:42,712 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:51:42,713 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:51:42,715 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:51:42,715 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:51:42,716 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:51:42,716 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:51:42,716 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:51:42,716 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:51:42,717 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:51:42,717 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:51:42,717 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:51:42,718 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2020-09-24 16:51:42,719 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:51:42,721 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:51:42,723 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:51:42,723 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:51:42,724 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:51:42,724 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 16:51:42,724 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:51:42,724 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:51:42,725 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 16:51:42,725 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:51:42,725 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:51:42,727 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131
[2020-09-24 16:51:42,728 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:51:42,730 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:51:42,731 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:51:42,732 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:51:42,732 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:51:42,732 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 16:51:42,732 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:51:42,733 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:51:42,733 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 16:51:42,733 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:51:42,733 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:51:42,735 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141
[2020-09-24 16:51:42,736 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:51:42,738 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:51:42,740 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:51:42,740 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:51:42,741 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:51:42,741 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 16:51:42,741 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:51:42,741 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:51:42,742 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 16:51:42,742 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:51:42,742 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:51:42,778 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 16:51:42,779 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625525990]
[2020-09-24 16:51:42,782 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 16:51:42,783 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-09-24 16:51:42,784 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638230370]
[2020-09-24 16:51:42,791 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-09-24 16:51:42,791 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 16:51:42,810 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-09-24 16:51:42,811 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 16:51:42,814 INFO  L87              Difference]: Start difference. First operand 310 states. Second operand 3 states.
[2020-09-24 16:51:44,146 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 16:51:44,147 INFO  L93              Difference]: Finished difference Result 486 states and 575 transitions.
[2020-09-24 16:51:44,148 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-09-24 16:51:44,149 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 153
[2020-09-24 16:51:44,151 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 16:51:44,180 INFO  L225             Difference]: With dead ends: 486
[2020-09-24 16:51:44,181 INFO  L226             Difference]: Without dead ends: 301
[2020-09-24 16:51:44,188 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 16:51:44,214 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 301 states.
[2020-09-24 16:51:44,331 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 259.
[2020-09-24 16:51:44,333 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 259 states.
[2020-09-24 16:51:44,335 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 280 transitions.
[2020-09-24 16:51:44,340 INFO  L78                 Accepts]: Start accepts. Automaton has 259 states and 280 transitions. Word has length 153
[2020-09-24 16:51:44,341 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 16:51:44,341 INFO  L479      AbstractCegarLoop]: Abstraction has 259 states and 280 transitions.
[2020-09-24 16:51:44,341 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-09-24 16:51:44,342 INFO  L276                IsEmpty]: Start isEmpty. Operand 259 states and 280 transitions.
[2020-09-24 16:51:44,347 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 155
[2020-09-24 16:51:44,347 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:51:44,347 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 16:51:44,348 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 16:51:44,348 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:51:44,348 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:51:44,349 INFO  L82        PathProgramCache]: Analyzing trace with hash -880334198, now seen corresponding path program 1 times
[2020-09-24 16:51:44,349 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:51:44,349 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685161197]
[2020-09-24 16:51:44,349 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:51:44,408 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:51:44,470 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:51:44,580 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:51:46,254 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:51:51,241 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:51:51,242 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 187
[2020-09-24 16:51:51,242 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-24 16:51:51,242 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6830
[2020-09-24 16:51:51,242 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:51:51,243 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-09-24 16:51:51,243 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 79
[2020-09-24 16:51:51,243 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 62
[2020-09-24 16:51:51,243 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:51:51,697 WARN  L193               SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-09-24 16:51:51,698 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 16:51:51,756 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:51:51,796 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:51:52,059 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:51:52,059 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 85
[2020-09-24 16:51:52,060 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:51:52,060 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 300
[2020-09-24 16:51:52,060 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:51:52,060 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:51:52,060 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:51:52,061 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 75
[2020-09-24 16:51:52,061 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:51:52,114 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-09-24 16:51:52,115 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:51:52,117 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:51:52,120 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:51:52,120 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:51:52,120 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:51:52,121 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 16:51:52,121 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:51:52,121 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:51:52,121 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:51:52,122 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 16:51:52,122 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:51:52,124 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-09-24 16:51:52,127 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:51:52,130 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:51:52,132 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:51:52,132 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:51:52,132 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:51:52,133 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 16:51:52,133 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:51:52,133 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:51:52,133 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:51:52,133 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 16:51:52,134 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:51:52,136 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-09-24 16:51:52,137 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:51:52,139 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:51:52,145 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:51:52,146 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:51:52,146 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:51:52,146 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-24 16:51:52,146 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:51:52,146 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:51:52,147 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:51:52,147 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 16:51:52,147 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:51:52,149 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-09-24 16:51:52,149 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:51:52,151 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:51:52,153 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:51:52,154 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:51:52,154 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:51:52,154 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 16:51:52,154 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:51:52,155 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:51:52,155 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:51:52,155 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 16:51:52,155 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:51:52,157 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122
[2020-09-24 16:51:52,157 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:51:52,159 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:51:52,160 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:51:52,160 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:51:52,161 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:51:52,161 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:51:52,161 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:51:52,161 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:51:52,161 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 16:51:52,161 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:51:52,161 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:51:52,163 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132
[2020-09-24 16:51:52,167 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:51:52,169 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:51:52,170 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:51:52,170 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:51:52,170 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:51:52,171 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:51:52,171 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:51:52,171 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:51:52,171 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 16:51:52,171 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:51:52,172 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:51:52,173 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142
[2020-09-24 16:51:52,174 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:51:52,175 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:51:52,176 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:51:52,176 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:51:52,177 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:51:52,177 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:51:52,177 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:51:52,177 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:51:52,177 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 16:51:52,178 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:51:52,178 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:51:52,209 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 16:51:52,209 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685161197]
[2020-09-24 16:51:52,210 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 16:51:52,215 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-24 16:51:52,215 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101190623]
[2020-09-24 16:51:52,218 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-24 16:51:52,218 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 16:51:52,218 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-24 16:51:52,219 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-24 16:51:52,219 INFO  L87              Difference]: Start difference. First operand 259 states and 280 transitions. Second operand 4 states.
[2020-09-24 16:51:52,809 WARN  L193               SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 16:51:53,879 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 16:51:53,879 INFO  L93              Difference]: Finished difference Result 450 states and 516 transitions.
[2020-09-24 16:51:53,880 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-09-24 16:51:53,880 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 154
[2020-09-24 16:51:53,882 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 16:51:53,885 INFO  L225             Difference]: With dead ends: 450
[2020-09-24 16:51:53,885 INFO  L226             Difference]: Without dead ends: 301
[2020-09-24 16:51:53,888 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 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 16:51:53,889 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 301 states.
[2020-09-24 16:51:53,933 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 259.
[2020-09-24 16:51:53,933 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 259 states.
[2020-09-24 16:51:53,935 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 279 transitions.
[2020-09-24 16:51:53,936 INFO  L78                 Accepts]: Start accepts. Automaton has 259 states and 279 transitions. Word has length 154
[2020-09-24 16:51:53,936 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 16:51:53,937 INFO  L479      AbstractCegarLoop]: Abstraction has 259 states and 279 transitions.
[2020-09-24 16:51:53,937 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-24 16:51:53,937 INFO  L276                IsEmpty]: Start isEmpty. Operand 259 states and 279 transitions.
[2020-09-24 16:51:53,940 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 163
[2020-09-24 16:51:53,941 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:51:53,941 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]
[2020-09-24 16:51:53,941 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 16:51:53,942 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:51:53,942 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:51:53,942 INFO  L82        PathProgramCache]: Analyzing trace with hash -1249670879, now seen corresponding path program 1 times
[2020-09-24 16:51:53,942 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:51:53,943 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591489876]
[2020-09-24 16:51:53,943 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:51:53,988 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:51:54,040 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:51:54,131 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:51:54,275 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:51:57,808 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:51:58,866 FATAL L256   erpolLogProxyWrapper]: Now shrinking...