/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_product52.cil.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 16:55:46,673 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 16:55:46,677 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 16:55:46,703 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 16:55:46,703 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 16:55:46,705 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 16:55:46,706 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 16:55:46,708 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 16:55:46,710 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 16:55:46,711 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 16:55:46,712 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 16:55:46,713 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 16:55:46,714 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 16:55:46,715 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 16:55:46,716 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 16:55:46,717 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 16:55:46,718 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 16:55:46,720 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 16:55:46,722 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 16:55:46,724 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 16:55:46,726 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 16:55:46,727 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 16:55:46,728 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 16:55:46,729 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 16:55:46,732 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 16:55:46,733 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 16:55:46,733 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 16:55:46,734 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 16:55:46,734 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 16:55:46,735 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 16:55:46,736 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 16:55:46,737 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 16:55:46,738 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 16:55:46,738 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 16:55:46,740 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 16:55:46,740 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 16:55:46,741 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 16:55:46,741 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 16:55:46,741 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 16:55:46,742 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 16:55:46,743 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 16:55:46,744 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-09-24 16:55:46,770 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 16:55:46,770 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 16:55:46,771 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 16:55:46,772 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 16:55:46,772 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 16:55:46,772 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 16:55:46,772 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 16:55:46,772 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 16:55:46,774 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 16:55:46,774 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 16:55:46,774 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 16:55:46,774 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 16:55:46,774 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 16:55:46,775 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 16:55:46,775 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 16:55:46,775 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 16:55:46,775 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 16:55:46,775 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 16:55:46,779 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 16:55:46,779 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 16:55:46,779 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 16:55:46,779 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 16:55:46,779 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 16:55:46,780 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 16:55:46,780 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 16:55:46,780 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 16:55:46,780 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 16:55:46,780 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 16:55:46,780 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 16:55:46,781 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true;
[2020-09-24 16:55:47,248 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 16:55:47,273 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 16:55:47,286 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 16:55:47,288 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 16:55:47,288 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 16:55:47,290 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product52.cil.c
[2020-09-24 16:55:47,362 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4fc368d7a/c0ad099fc37f4809b2d49fedbb70f564/FLAGe52437805
[2020-09-24 16:55:47,985 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 16:55:47,986 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product52.cil.c
[2020-09-24 16:55:48,005 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4fc368d7a/c0ad099fc37f4809b2d49fedbb70f564/FLAGe52437805
[2020-09-24 16:55:48,248 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4fc368d7a/c0ad099fc37f4809b2d49fedbb70f564
[2020-09-24 16:55:48,260 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 16:55:48,266 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 16:55:48,267 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 16:55:48,267 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 16:55:48,272 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 16:55:48,273 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:55:48" (1/1) ...
[2020-09-24 16:55:48,277 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7845d484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:48, skipping insertion in model container
[2020-09-24 16:55:48,277 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:55:48" (1/1) ...
[2020-09-24 16:55:48,286 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 16:55:48,362 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 16:55:48,714 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 16:55:48,730 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 16:55:48,922 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 16:55:48,960 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 16:55:48,961 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:48 WrapperNode
[2020-09-24 16:55:48,961 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 16:55:48,962 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 16:55:48,962 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 16:55:48,962 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 16:55:48,980 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:48" (1/1) ...
[2020-09-24 16:55:48,980 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:48" (1/1) ...
[2020-09-24 16:55:49,001 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:48" (1/1) ...
[2020-09-24 16:55:49,002 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:48" (1/1) ...
[2020-09-24 16:55:49,032 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:48" (1/1) ...
[2020-09-24 16:55:49,043 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:48" (1/1) ...
[2020-09-24 16:55:49,049 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:48" (1/1) ...
[2020-09-24 16:55:49,070 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 16:55:49,070 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 16:55:49,070 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 16:55:49,070 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 16:55:49,073 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:48" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 16:55:49,146 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 16:55:49,146 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 16:55:49,147 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-09-24 16:55:49,147 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-09-24 16:55:49,147 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-09-24 16:55:49,147 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-09-24 16:55:49,147 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-09-24 16:55:49,148 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-09-24 16:55:49,148 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-09-24 16:55:49,148 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry
[2020-09-24 16:55:49,148 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry
[2020-09-24 16:55:49,148 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-09-24 16:55:49,149 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base
[2020-09-24 16:55:49,149 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor
[2020-09-24 16:55:49,149 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-09-24 16:55:49,149 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-09-24 16:55:49,149 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-09-24 16:55:49,150 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-09-24 16:55:49,150 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-09-24 16:55:49,150 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-09-24 16:55:49,150 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterLevel
[2020-09-24 16:55:49,150 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterLevel
[2020-09-24 16:55:49,151 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopSystem
[2020-09-24 16:55:49,151 INFO  L138     BoogieDeclarations]: Found implementation of procedure startSystem
[2020-09-24 16:55:49,151 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-09-24 16:55:49,151 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-09-24 16:55:49,151 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-09-24 16:55:49,152 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-09-24 16:55:49,152 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-09-24 16:55:49,152 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-09-24 16:55:49,152 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-09-24 16:55:49,152 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-09-24 16:55:49,152 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-09-24 16:55:49,153 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-09-24 16:55:49,153 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-09-24 16:55:49,153 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 16:55:49,153 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-09-24 16:55:49,153 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-09-24 16:55:49,153 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-09-24 16:55:49,154 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-09-24 16:55:49,154 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-09-24 16:55:49,154 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1
[2020-09-24 16:55:49,154 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 16:55:49,154 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 16:55:49,155 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-09-24 16:55:49,155 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-09-24 16:55:49,155 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-09-24 16:55:49,155 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-09-24 16:55:49,155 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-09-24 16:55:49,155 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-09-24 16:55:49,155 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-09-24 16:55:49,156 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry
[2020-09-24 16:55:49,156 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry
[2020-09-24 16:55:49,156 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-24 16:55:49,156 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-09-24 16:55:49,156 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-09-24 16:55:49,156 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-09-24 16:55:49,157 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-09-24 16:55:49,157 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-09-24 16:55:49,157 INFO  L130     BoogieDeclarations]: Found specification of procedure stopSystem
[2020-09-24 16:55:49,157 INFO  L130     BoogieDeclarations]: Found specification of procedure startSystem
[2020-09-24 16:55:49,157 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1
[2020-09-24 16:55:49,157 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-09-24 16:55:49,158 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base
[2020-09-24 16:55:49,158 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterLevel
[2020-09-24 16:55:49,158 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor
[2020-09-24 16:55:49,158 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterLevel
[2020-09-24 16:55:49,158 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-09-24 16:55:49,158 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-09-24 16:55:49,158 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-09-24 16:55:49,159 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-09-24 16:55:49,159 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-09-24 16:55:49,159 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-09-24 16:55:49,159 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-09-24 16:55:49,159 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-09-24 16:55:49,159 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-09-24 16:55:49,160 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-09-24 16:55:49,160 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-09-24 16:55:49,160 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-09-24 16:55:49,160 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-24 16:55:49,160 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-09-24 16:55:49,160 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-09-24 16:55:49,160 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-09-24 16:55:49,161 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-09-24 16:55:49,161 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-09-24 16:55:49,161 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-09-24 16:55:49,161 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-09-24 16:55:49,161 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-09-24 16:55:49,161 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-09-24 16:55:49,162 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-09-24 16:55:49,162 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-09-24 16:55:49,162 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-09-24 16:55:49,162 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 16:55:49,162 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-09-24 16:55:49,162 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-09-24 16:55:49,162 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 16:55:49,163 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-09-24 16:55:49,163 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 16:55:50,412 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 16:55:50,412 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-09-24 16:55:50,419 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:55:50 BoogieIcfgContainer
[2020-09-24 16:55:50,419 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 16:55:50,421 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 16:55:50,421 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 16:55:50,424 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 16:55:50,425 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:55:48" (1/3) ...
[2020-09-24 16:55:50,425 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1609de18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:55:50, skipping insertion in model container
[2020-09-24 16:55:50,426 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:48" (2/3) ...
[2020-09-24 16:55:50,426 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1609de18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:55:50, skipping insertion in model container
[2020-09-24 16:55:50,426 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:55:50" (3/3) ...
[2020-09-24 16:55:50,428 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec4_product52.cil.c
[2020-09-24 16:55:50,440 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 16:55:50,451 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 16:55:50,473 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 16:55:50,507 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 16:55:50,507 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 16:55:50,507 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 16:55:50,507 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 16:55:50,508 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 16:55:50,508 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 16:55:50,508 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 16:55:50,508 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 16:55:50,537 INFO  L276                IsEmpty]: Start isEmpty. Operand 322 states.
[2020-09-24 16:55:50,556 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 143
[2020-09-24 16:55:50,556 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:55:50,558 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 16:55:50,559 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:55:50,567 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:55:50,567 INFO  L82        PathProgramCache]: Analyzing trace with hash -1964738656, now seen corresponding path program 1 times
[2020-09-24 16:55:50,579 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:55:50,579 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680016542]
[2020-09-24 16:55:50,580 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:55:50,910 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:51,085 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:51,237 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:52,720 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:53,736 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:57,915 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:56:12,097 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:56:12,097 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 173
[2020-09-24 16:56:12,098 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 5
[2020-09-24 16:56:12,099 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 21177
[2020-09-24 16:56:12,100 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:56:12,109 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-24 16:56:12,110 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 138
[2020-09-24 16:56:12,110 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 31
[2020-09-24 16:56:12,110 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 11
[2020-09-24 16:56:12,587 WARN  L193               SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-09-24 16:56:12,590 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 16:56:12,607 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:56:12,618 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:56:12,715 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:56:12,715 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 85
[2020-09-24 16:56:12,715 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:56:12,715 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 106
[2020-09-24 16:56:12,716 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:56:12,716 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:56:12,716 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:56:12,716 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:56:12,717 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:56:12,775 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-09-24 16:56:12,776 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:56:12,777 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:56:12,779 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:56:12,779 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:56:12,779 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:56:12,780 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:56:12,780 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:56:12,780 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:56:12,780 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:56:12,781 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:56:12,781 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:56:12,783 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-09-24 16:56:12,783 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:56:12,788 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:56:12,789 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:56:12,789 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:56:12,789 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:56:12,791 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-24 16:56:12,791 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:56:12,791 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:56:12,791 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:56:12,792 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:56:12,792 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:56:12,795 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-09-24 16:56:12,796 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:56:12,799 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:56:12,811 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:56:12,812 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:56:12,812 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:56:12,812 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 14
[2020-09-24 16:56:12,812 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:56:12,813 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:56:12,813 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:56:12,813 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:56:12,813 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:56:12,815 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-09-24 16:56:12,816 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:56:12,817 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:56:12,818 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:56:12,819 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:56:12,819 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:56:12,819 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:56:12,819 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:56:12,820 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:56:12,820 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:56:12,820 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:56:12,820 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:56:12,821 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120
[2020-09-24 16:56:12,823 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:56:12,825 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:56:12,827 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:56:12,828 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:56:12,828 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:56:12,828 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 16:56:12,828 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:56:12,829 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:56:12,829 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:56:12,829 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 16:56:12,829 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:56:12,832 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130
[2020-09-24 16:56:12,833 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:56:12,835 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:56:12,841 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:56:12,841 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:56:12,842 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:56:12,842 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-24 16:56:12,842 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:56:12,842 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 16:56:12,843 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:56:12,843 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 16:56:12,843 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:56:12,898 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 16:56:12,899 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680016542]
[2020-09-24 16:56:12,901 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 16:56:12,902 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-09-24 16:56:12,903 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667908199]
[2020-09-24 16:56:12,910 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-09-24 16:56:12,911 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 16:56:12,929 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-09-24 16:56:12,930 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2020-09-24 16:56:12,933 INFO  L87              Difference]: Start difference. First operand 322 states. Second operand 8 states.
[2020-09-24 16:56:13,582 WARN  L193               SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 16:56:15,071 WARN  L193               SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 16:56:15,412 WARN  L193               SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-09-24 16:56:15,762 WARN  L193               SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 16:56:16,131 WARN  L193               SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-09-24 16:56:16,461 WARN  L193               SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 16:56:17,191 WARN  L193               SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 16:56:17,492 WARN  L193               SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 16:56:17,843 WARN  L193               SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-09-24 16:56:19,203 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 16:56:19,204 INFO  L93              Difference]: Finished difference Result 629 states and 785 transitions.
[2020-09-24 16:56:19,209 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-09-24 16:56:19,211 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 142
[2020-09-24 16:56:19,213 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 16:56:19,235 INFO  L225             Difference]: With dead ends: 629
[2020-09-24 16:56:19,235 INFO  L226             Difference]: Without dead ends: 418
[2020-09-24 16:56:19,242 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272
[2020-09-24 16:56:19,266 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 418 states.
[2020-09-24 16:56:19,372 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 373.
[2020-09-24 16:56:19,373 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 373 states.
[2020-09-24 16:56:19,377 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 428 transitions.
[2020-09-24 16:56:19,379 INFO  L78                 Accepts]: Start accepts. Automaton has 373 states and 428 transitions. Word has length 142
[2020-09-24 16:56:19,380 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 16:56:19,380 INFO  L479      AbstractCegarLoop]: Abstraction has 373 states and 428 transitions.
[2020-09-24 16:56:19,381 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-09-24 16:56:19,381 INFO  L276                IsEmpty]: Start isEmpty. Operand 373 states and 428 transitions.
[2020-09-24 16:56:19,386 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 206
[2020-09-24 16:56:19,386 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:56:19,386 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 16:56:19,387 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 16:56:19,387 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:56:19,387 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:56:19,387 INFO  L82        PathProgramCache]: Analyzing trace with hash -631628131, now seen corresponding path program 1 times
[2020-09-24 16:56:19,388 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:56:19,388 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669370644]
[2020-09-24 16:56:19,388 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:56:19,446 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:56:19,507 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:56:19,603 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:56:19,731 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:56:20,428 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:56:27,657 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:56:27,862 FATAL L256   erpolLogProxyWrapper]: Now shrinking...