/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product19.cil.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 16:53:38,016 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 16:53:38,020 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 16:53:38,046 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 16:53:38,046 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 16:53:38,048 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 16:53:38,049 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 16:53:38,051 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 16:53:38,053 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 16:53:38,054 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 16:53:38,055 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 16:53:38,056 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 16:53:38,056 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 16:53:38,057 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 16:53:38,059 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 16:53:38,060 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 16:53:38,062 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 16:53:38,063 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 16:53:38,067 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 16:53:38,071 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 16:53:38,074 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 16:53:38,076 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 16:53:38,078 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 16:53:38,080 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 16:53:38,085 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 16:53:38,085 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 16:53:38,086 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 16:53:38,089 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 16:53:38,089 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 16:53:38,092 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 16:53:38,092 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 16:53:38,094 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 16:53:38,095 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 16:53:38,096 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 16:53:38,098 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 16:53:38,098 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 16:53:38,099 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 16:53:38,099 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 16:53:38,099 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 16:53:38,100 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 16:53:38,102 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 16:53:38,103 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 16:53:38,162 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 16:53:38,163 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 16:53:38,164 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 16:53:38,165 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 16:53:38,165 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 16:53:38,165 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 16:53:38,165 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 16:53:38,166 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 16:53:38,167 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 16:53:38,167 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 16:53:38,167 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 16:53:38,167 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 16:53:38,167 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 16:53:38,168 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 16:53:38,168 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 16:53:38,168 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 16:53:38,168 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 16:53:38,168 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 16:53:38,169 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 16:53:38,170 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 16:53:38,170 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 16:53:38,170 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 16:53:38,171 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 16:53:38,171 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 16:53:38,171 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 16:53:38,171 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 16:53:38,171 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 16:53:38,172 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 16:53:38,172 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 16:53:38,172 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 16:53:38,612 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 16:53:38,632 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 16:53:38,637 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 16:53:38,638 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 16:53:38,639 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 16:53:38,641 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product19.cil.c
[2020-09-24 16:53:38,720 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a30f494e7/238e12d3f6c44fa8af4bd5afbc0dd881/FLAG460b4b3d7
[2020-09-24 16:53:39,268 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 16:53:39,270 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product19.cil.c
[2020-09-24 16:53:39,293 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a30f494e7/238e12d3f6c44fa8af4bd5afbc0dd881/FLAG460b4b3d7
[2020-09-24 16:53:39,552 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a30f494e7/238e12d3f6c44fa8af4bd5afbc0dd881
[2020-09-24 16:53:39,567 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 16:53:39,573 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 16:53:39,574 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 16:53:39,575 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 16:53:39,579 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 16:53:39,581 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:53:39" (1/1) ...
[2020-09-24 16:53:39,586 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:53:39, skipping insertion in model container
[2020-09-24 16:53:39,586 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:53:39" (1/1) ...
[2020-09-24 16:53:39,596 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 16:53:39,671 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 16:53:40,075 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 16:53:40,093 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 16:53:40,348 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 16:53:40,392 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 16:53:40,393 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:53:40 WrapperNode
[2020-09-24 16:53:40,393 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 16:53:40,394 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 16:53:40,394 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 16:53:40,394 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 16:53:40,411 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:53:40" (1/1) ...
[2020-09-24 16:53:40,411 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:53:40" (1/1) ...
[2020-09-24 16:53:40,434 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:53:40" (1/1) ...
[2020-09-24 16:53:40,435 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:53:40" (1/1) ...
[2020-09-24 16:53:40,467 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:53:40" (1/1) ...
[2020-09-24 16:53:40,478 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:53:40" (1/1) ...
[2020-09-24 16:53:40,484 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:53:40" (1/1) ...
[2020-09-24 16:53:40,492 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 16:53:40,492 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 16:53:40,493 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 16:53:40,493 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 16:53:40,494 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:53:40" (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 16:53:40,597 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 16:53:40,597 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 16:53:40,598 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-09-24 16:53:40,598 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-09-24 16:53:40,599 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-09-24 16:53:40,599 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-09-24 16:53:40,599 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-09-24 16:53:40,600 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-09-24 16:53:40,600 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-09-24 16:53:40,601 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-09-24 16:53:40,601 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-09-24 16:53:40,601 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-09-24 16:53:40,601 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-09-24 16:53:40,602 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-09-24 16:53:40,602 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-09-24 16:53:40,603 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry
[2020-09-24 16:53:40,603 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-09-24 16:53:40,604 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base
[2020-09-24 16:53:40,604 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-09-24 16:53:40,604 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-09-24 16:53:40,605 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-09-24 16:53:40,605 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-09-24 16:53:40,605 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-09-24 16:53:40,605 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-09-24 16:53:40,606 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterLevel
[2020-09-24 16:53:40,606 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopSystem
[2020-09-24 16:53:40,607 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-09-24 16:53:40,607 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-09-24 16:53:40,607 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-09-24 16:53:40,607 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-09-24 16:53:40,607 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-09-24 16:53:40,608 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-09-24 16:53:40,608 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 16:53:40,608 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-09-24 16:53:40,608 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-09-24 16:53:40,608 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-09-24 16:53:40,608 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-09-24 16:53:40,609 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1
[2020-09-24 16:53:40,609 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 16:53:40,609 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 16:53:40,609 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-09-24 16:53:40,609 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-09-24 16:53:40,609 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-09-24 16:53:40,609 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-09-24 16:53:40,610 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-09-24 16:53:40,610 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-09-24 16:53:40,610 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-09-24 16:53:40,610 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-09-24 16:53:40,610 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-09-24 16:53:40,610 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-09-24 16:53:40,611 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-24 16:53:40,611 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-09-24 16:53:40,611 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-09-24 16:53:40,611 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-09-24 16:53:40,612 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-09-24 16:53:40,612 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-09-24 16:53:40,612 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-24 16:53:40,612 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-09-24 16:53:40,612 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-09-24 16:53:40,613 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-09-24 16:53:40,613 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-09-24 16:53:40,613 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-09-24 16:53:40,613 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-09-24 16:53:40,613 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-09-24 16:53:40,613 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry
[2020-09-24 16:53:40,614 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-09-24 16:53:40,614 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-09-24 16:53:40,614 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-09-24 16:53:40,614 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-09-24 16:53:40,614 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-09-24 16:53:40,614 INFO  L130     BoogieDeclarations]: Found specification of procedure stopSystem
[2020-09-24 16:53:40,615 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1
[2020-09-24 16:53:40,616 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-09-24 16:53:40,616 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base
[2020-09-24 16:53:40,617 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterLevel
[2020-09-24 16:53:40,617 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-09-24 16:53:40,617 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-09-24 16:53:40,618 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-09-24 16:53:40,618 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-09-24 16:53:40,618 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-09-24 16:53:40,618 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-09-24 16:53:40,618 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-09-24 16:53:40,618 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-09-24 16:53:40,619 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-09-24 16:53:40,619 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-09-24 16:53:40,620 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 16:53:40,620 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-09-24 16:53:40,620 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 16:53:40,620 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-09-24 16:53:40,620 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 16:53:41,823 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 16:53:41,823 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-09-24 16:53:41,834 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:53:41 BoogieIcfgContainer
[2020-09-24 16:53:41,834 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 16:53:41,835 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 16:53:41,835 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 16:53:41,839 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 16:53:41,839 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:53:39" (1/3) ...
[2020-09-24 16:53:41,840 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7875af67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:53:41, skipping insertion in model container
[2020-09-24 16:53:41,840 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:53:40" (2/3) ...
[2020-09-24 16:53:41,841 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7875af67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:53:41, skipping insertion in model container
[2020-09-24 16:53:41,841 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:53:41" (3/3) ...
[2020-09-24 16:53:41,844 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec4_product19.cil.c
[2020-09-24 16:53:41,855 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 16:53:41,865 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 16:53:41,886 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 16:53:41,913 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 16:53:41,913 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 16:53:41,914 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 16:53:41,914 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 16:53:41,914 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 16:53:41,914 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 16:53:41,914 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 16:53:41,914 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 16:53:41,942 INFO  L276                IsEmpty]: Start isEmpty. Operand 281 states.
[2020-09-24 16:53:41,958 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 143
[2020-09-24 16:53:41,958 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:53:41,959 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 16:53:41,960 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:53:41,966 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:53:41,967 INFO  L82        PathProgramCache]: Analyzing trace with hash 2064914024, now seen corresponding path program 1 times
[2020-09-24 16:53:41,977 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:53:41,978 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993614159]
[2020-09-24 16:53:41,978 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:53:42,317 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:53:42,521 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:53:42,693 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:53:44,083 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:53:45,070 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:53:54,710 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:53:56,737 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:53:56,738 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 173
[2020-09-24 16:53:56,738 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 5
[2020-09-24 16:53:56,738 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 14406
[2020-09-24 16:53:56,740 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:53:56,740 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 16
[2020-09-24 16:53:56,740 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 78
[2020-09-24 16:53:56,741 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 79
[2020-09-24 16:53:56,741 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-24 16:53:57,188 WARN  L193               SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-09-24 16:53:57,191 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 16:53:57,228 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:53:57,265 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:53:57,515 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:53:57,516 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 85
[2020-09-24 16:53:57,516 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:53:57,516 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 286
[2020-09-24 16:53:57,516 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:53:57,516 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:53:57,517 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:53:57,517 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 74
[2020-09-24 16:53:57,517 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:53:57,576 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-09-24 16:53:57,577 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:53:57,578 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:53:57,581 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:53:57,581 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:53:57,581 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:53:57,581 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 16:53:57,582 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:53:57,582 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:53:57,582 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:53:57,582 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 16:53:57,582 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:53:57,584 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-09-24 16:53:57,585 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:53:57,587 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:53:57,589 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:53:57,589 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:53:57,590 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:53:57,590 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 16:53:57,590 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:53:57,590 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:53:57,590 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:53:57,591 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 16:53:57,591 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:53:57,592 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-09-24 16:53:57,594 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:53:57,595 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:53:57,602 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:53:57,602 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:53:57,603 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:53:57,603 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-09-24 16:53:57,603 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:53:57,603 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:53:57,603 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:53:57,604 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 16:53:57,604 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:53:57,606 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-09-24 16:53:57,607 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:53:57,608 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:53:57,610 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:53:57,610 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:53:57,611 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:53:57,611 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:53:57,611 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:53:57,611 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:53:57,612 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:53:57,612 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 16:53:57,612 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:53:57,613 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120
[2020-09-24 16:53:57,614 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:53:57,616 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:53:57,622 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:53:57,622 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:53:57,622 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:53:57,623 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-24 16:53:57,623 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:53:57,623 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 16:53:57,623 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:53:57,623 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 16:53:57,624 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:53:57,647 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130
[2020-09-24 16:53:57,648 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:53:57,649 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:53:57,651 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:53:57,651 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:53:57,651 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:53:57,651 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:53:57,652 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:53:57,652 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:53:57,652 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 16:53:57,652 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:53:57,653 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:53:57,680 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 16:53:57,681 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993614159]
[2020-09-24 16:53:57,683 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 16:53:57,684 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-09-24 16:53:57,685 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215813868]
[2020-09-24 16:53:57,691 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-09-24 16:53:57,692 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 16:53:57,711 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-09-24 16:53:57,712 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2020-09-24 16:53:57,715 INFO  L87              Difference]: Start difference. First operand 281 states. Second operand 8 states.
[2020-09-24 16:53:58,261 WARN  L193               SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 16:53:59,243 WARN  L193               SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 16:53:59,581 WARN  L193               SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-09-24 16:53:59,991 WARN  L193               SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 16:54:00,413 WARN  L193               SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-09-24 16:54:00,755 WARN  L193               SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 16:54:01,087 WARN  L193               SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 16:54:01,392 WARN  L193               SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 16:54:03,132 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 16:54:03,132 INFO  L93              Difference]: Finished difference Result 556 states and 690 transitions.
[2020-09-24 16:54:03,136 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-09-24 16:54:03,138 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 142
[2020-09-24 16:54:03,139 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 16:54:03,160 INFO  L225             Difference]: With dead ends: 556
[2020-09-24 16:54:03,161 INFO  L226             Difference]: Without dead ends: 386
[2020-09-24 16:54:03,167 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 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 16:54:03,188 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 386 states.
[2020-09-24 16:54:03,300 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 342.
[2020-09-24 16:54:03,302 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 342 states.
[2020-09-24 16:54:03,305 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 388 transitions.
[2020-09-24 16:54:03,307 INFO  L78                 Accepts]: Start accepts. Automaton has 342 states and 388 transitions. Word has length 142
[2020-09-24 16:54:03,308 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 16:54:03,309 INFO  L479      AbstractCegarLoop]: Abstraction has 342 states and 388 transitions.
[2020-09-24 16:54:03,309 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-09-24 16:54:03,309 INFO  L276                IsEmpty]: Start isEmpty. Operand 342 states and 388 transitions.
[2020-09-24 16:54:03,315 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 149
[2020-09-24 16:54:03,315 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:54:03,316 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]
[2020-09-24 16:54:03,316 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 16:54:03,316 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:54:03,317 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:54:03,317 INFO  L82        PathProgramCache]: Analyzing trace with hash -702473135, now seen corresponding path program 1 times
[2020-09-24 16:54:03,317 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:54:03,318 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080177517]
[2020-09-24 16:54:03,318 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:54:03,365 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:54:03,413 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:03,498 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:04,369 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:08,935 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:12,062 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:54:12,062 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 181
[2020-09-24 16:54:12,062 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-09-24 16:54:12,062 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8694
[2020-09-24 16:54:12,062 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:54:12,063 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-09-24 16:54:12,063 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 81
[2020-09-24 16:54:12,063 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 67
[2020-09-24 16:54:12,063 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:54:12,369 WARN  L193               SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-09-24 16:54:12,370 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 16:54:12,399 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:54:12,432 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:12,618 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:54:12,618 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 85
[2020-09-24 16:54:12,618 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:54:12,618 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 217
[2020-09-24 16:54:12,619 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:54:12,619 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:54:12,619 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:54:12,619 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 77
[2020-09-24 16:54:12,620 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:54:12,666 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-09-24 16:54:12,668 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:54:12,669 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:12,671 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:54:12,671 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:54:12,671 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:54:12,672 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:54:12,672 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:54:12,672 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:54:12,672 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:54:12,672 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 16:54:12,673 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:54:12,676 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-09-24 16:54:12,677 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:54:12,678 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:12,680 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:54:12,681 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:54:12,681 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:54:12,681 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:54:12,681 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:54:12,681 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:54:12,682 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:54:12,682 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 16:54:12,682 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:54:12,683 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-09-24 16:54:12,684 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:54:12,686 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:12,696 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:54:12,696 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:54:12,696 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:54:12,697 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-09-24 16:54:12,697 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:54:12,697 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:54:12,697 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:54:12,697 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 16:54:12,698 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:54:12,699 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-09-24 16:54:12,700 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:54:12,701 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:12,704 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:54:12,704 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:54:12,704 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:54:12,705 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 16:54:12,705 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:54:12,706 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:54:12,706 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:54:12,706 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 16:54:12,707 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:54:12,724 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117
[2020-09-24 16:54:12,725 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:54:12,727 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:12,734 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:54:12,734 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-24 16:54:12,734 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:54:12,735 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-09-24 16:54:12,735 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:54:12,736 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:54:12,736 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:54:12,736 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-24 16:54:12,737 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:54:12,739 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126
[2020-09-24 16:54:12,739 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:54:12,741 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:12,743 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:54:12,743 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:54:12,743 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:54:12,744 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:54:12,744 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:54:12,745 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:54:12,745 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 16:54:12,745 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:54:12,746 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:54:12,748 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136
[2020-09-24 16:54:12,749 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:54:12,750 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:12,752 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:54:12,752 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:54:12,753 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:54:12,753 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:54:12,753 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:54:12,754 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:54:12,754 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 16:54:12,754 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:54:12,755 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:54:12,806 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 16:54:12,807 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080177517]
[2020-09-24 16:54:12,807 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 16:54:12,808 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-24 16:54:12,809 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312114899]
[2020-09-24 16:54:12,818 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 16:54:12,818 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 16:54:12,819 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 16:54:12,819 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-09-24 16:54:12,819 INFO  L87              Difference]: Start difference. First operand 342 states and 388 transitions. Second operand 5 states.
[2020-09-24 16:54:13,438 WARN  L193               SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 16:54:15,469 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 16:54:15,469 INFO  L93              Difference]: Finished difference Result 881 states and 1082 transitions.
[2020-09-24 16:54:15,470 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-09-24 16:54:15,470 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 148
[2020-09-24 16:54:15,471 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 16:54:15,483 INFO  L225             Difference]: With dead ends: 881
[2020-09-24 16:54:15,484 INFO  L226             Difference]: Without dead ends: 649
[2020-09-24 16:54:15,487 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2020-09-24 16:54:15,489 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 649 states.
[2020-09-24 16:54:15,602 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 561.
[2020-09-24 16:54:15,602 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 561 states.
[2020-09-24 16:54:15,606 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 651 transitions.
[2020-09-24 16:54:15,606 INFO  L78                 Accepts]: Start accepts. Automaton has 561 states and 651 transitions. Word has length 148
[2020-09-24 16:54:15,607 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 16:54:15,607 INFO  L479      AbstractCegarLoop]: Abstraction has 561 states and 651 transitions.
[2020-09-24 16:54:15,607 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 16:54:15,608 INFO  L276                IsEmpty]: Start isEmpty. Operand 561 states and 651 transitions.
[2020-09-24 16:54:15,611 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 166
[2020-09-24 16:54:15,612 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:54:15,612 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 16:54:15,612 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 16:54:15,612 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:54:15,613 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:54:15,613 INFO  L82        PathProgramCache]: Analyzing trace with hash 532350854, now seen corresponding path program 1 times
[2020-09-24 16:54:15,613 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:54:15,613 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694296893]
[2020-09-24 16:54:15,614 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:54:15,654 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:54:15,701 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:16,651 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:16,900 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:17,311 FATAL L256   erpolLogProxyWrapper]: Now shrinking...