/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_product38.cil.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 16:54:54,016 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 16:54:54,020 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 16:54:54,046 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 16:54:54,047 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 16:54:54,048 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 16:54:54,049 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 16:54:54,051 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 16:54:54,053 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 16:54:54,054 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 16:54:54,055 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 16:54:54,056 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 16:54:54,056 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 16:54:54,057 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 16:54:54,058 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 16:54:54,059 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 16:54:54,060 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 16:54:54,061 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 16:54:54,063 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 16:54:54,065 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 16:54:54,067 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 16:54:54,068 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 16:54:54,069 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 16:54:54,070 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 16:54:54,072 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 16:54:54,072 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 16:54:54,072 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 16:54:54,076 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 16:54:54,076 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 16:54:54,077 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 16:54:54,077 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 16:54:54,080 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 16:54:54,082 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 16:54:54,083 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 16:54:54,085 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 16:54:54,085 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 16:54:54,086 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 16:54:54,086 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 16:54:54,086 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 16:54:54,087 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 16:54:54,088 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 16:54:54,089 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 16:54:54,145 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 16:54:54,146 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 16:54:54,147 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 16:54:54,147 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 16:54:54,147 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 16:54:54,148 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 16:54:54,148 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 16:54:54,148 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 16:54:54,148 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 16:54:54,148 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 16:54:54,148 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 16:54:54,150 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 16:54:54,150 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 16:54:54,150 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 16:54:54,150 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 16:54:54,151 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 16:54:54,151 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 16:54:54,152 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 16:54:54,152 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 16:54:54,152 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 16:54:54,152 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 16:54:54,152 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 16:54:54,153 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 16:54:54,153 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 16:54:54,153 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 16:54:54,153 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 16:54:54,153 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 16:54:54,154 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 16:54:54,154 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 16:54:54,154 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 16:54:54,614 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 16:54:54,633 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 16:54:54,637 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 16:54:54,639 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 16:54:54,640 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 16:54:54,641 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product38.cil.c
[2020-09-24 16:54:54,741 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/607ae6036/085a622f972f4af8a11a0d87686b9b0d/FLAG156778235
[2020-09-24 16:54:55,386 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 16:54:55,387 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product38.cil.c
[2020-09-24 16:54:55,409 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/607ae6036/085a622f972f4af8a11a0d87686b9b0d/FLAG156778235
[2020-09-24 16:54:55,625 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/607ae6036/085a622f972f4af8a11a0d87686b9b0d
[2020-09-24 16:54:55,639 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 16:54:55,645 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 16:54:55,647 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 16:54:55,647 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 16:54:55,651 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 16:54:55,652 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:54:55" (1/1) ...
[2020-09-24 16:54:55,657 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53d96e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:55, skipping insertion in model container
[2020-09-24 16:54:55,658 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:54:55" (1/1) ...
[2020-09-24 16:54:55,668 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 16:54:55,744 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 16:54:56,173 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 16:54:56,197 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 16:54:56,300 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 16:54:56,350 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 16:54:56,350 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:56 WrapperNode
[2020-09-24 16:54:56,351 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 16:54:56,351 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 16:54:56,351 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 16:54:56,352 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 16:54:56,366 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:56" (1/1) ...
[2020-09-24 16:54:56,366 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:56" (1/1) ...
[2020-09-24 16:54:56,387 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:56" (1/1) ...
[2020-09-24 16:54:56,388 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:56" (1/1) ...
[2020-09-24 16:54:56,422 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:56" (1/1) ...
[2020-09-24 16:54:56,434 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:56" (1/1) ...
[2020-09-24 16:54:56,440 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:56" (1/1) ...
[2020-09-24 16:54:56,449 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 16:54:56,449 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 16:54:56,450 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 16:54:56,450 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 16:54:56,451 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:56" (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 16:54:56,560 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 16:54:56,560 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 16:54:56,561 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-09-24 16:54:56,561 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-09-24 16:54:56,561 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-09-24 16:54:56,562 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-09-24 16:54:56,562 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-09-24 16:54:56,562 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 16:54:56,562 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-09-24 16:54:56,563 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-09-24 16:54:56,563 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-09-24 16:54:56,564 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-09-24 16:54:56,564 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-09-24 16:54:56,564 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-09-24 16:54:56,564 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry
[2020-09-24 16:54:56,565 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-09-24 16:54:56,565 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1
[2020-09-24 16:54:56,565 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-09-24 16:54:56,566 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-09-24 16:54:56,566 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base
[2020-09-24 16:54:56,566 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor
[2020-09-24 16:54:56,566 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-09-24 16:54:56,567 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-09-24 16:54:56,567 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-09-24 16:54:56,567 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-09-24 16:54:56,568 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-09-24 16:54:56,568 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-09-24 16:54:56,568 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterLevel
[2020-09-24 16:54:56,568 INFO  L138     BoogieDeclarations]: Found implementation of procedure startSystem
[2020-09-24 16:54:56,569 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-09-24 16:54:56,569 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-09-24 16:54:56,569 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-09-24 16:54:56,569 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-09-24 16:54:56,569 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-09-24 16:54:56,569 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-09-24 16:54:56,570 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-09-24 16:54:56,570 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-09-24 16:54:56,570 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-09-24 16:54:56,570 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-09-24 16:54:56,570 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 16:54:56,570 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 16:54:56,571 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-09-24 16:54:56,571 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-09-24 16:54:56,571 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-09-24 16:54:56,571 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-09-24 16:54:56,571 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-09-24 16:54:56,572 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-09-24 16:54:56,573 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-09-24 16:54:56,573 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-09-24 16:54:56,573 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-09-24 16:54:56,573 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-09-24 16:54:56,573 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-09-24 16:54:56,574 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-09-24 16:54:56,574 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-09-24 16:54:56,574 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 16:54:56,574 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-09-24 16:54:56,575 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-09-24 16:54:56,575 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-09-24 16:54:56,575 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-09-24 16:54:56,575 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry
[2020-09-24 16:54:56,575 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-24 16:54:56,575 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-09-24 16:54:56,576 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-09-24 16:54:56,576 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1
[2020-09-24 16:54:56,576 INFO  L130     BoogieDeclarations]: Found specification of procedure startSystem
[2020-09-24 16:54:56,576 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-09-24 16:54:56,576 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-09-24 16:54:56,576 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-09-24 16:54:56,577 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base
[2020-09-24 16:54:56,577 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterLevel
[2020-09-24 16:54:56,577 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor
[2020-09-24 16:54:56,578 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-09-24 16:54:56,578 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-09-24 16:54:56,579 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-09-24 16:54:56,580 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-09-24 16:54:56,580 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-09-24 16:54:56,580 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-09-24 16:54:56,580 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-09-24 16:54:56,580 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-09-24 16:54:56,580 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-09-24 16:54:56,580 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-09-24 16:54:56,581 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-24 16:54:56,581 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-09-24 16:54:56,581 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-09-24 16:54:56,582 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-09-24 16:54:56,582 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-09-24 16:54:56,582 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-09-24 16:54:56,582 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-09-24 16:54:56,582 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-09-24 16:54:56,582 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 16:54:56,583 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-09-24 16:54:56,583 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 16:54:57,738 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 16:54:57,738 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-09-24 16:54:57,746 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:54:57 BoogieIcfgContainer
[2020-09-24 16:54:57,746 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 16:54:57,747 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 16:54:57,747 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 16:54:57,751 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 16:54:57,751 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:54:55" (1/3) ...
[2020-09-24 16:54:57,752 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fdc7bf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:54:57, skipping insertion in model container
[2020-09-24 16:54:57,753 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:56" (2/3) ...
[2020-09-24 16:54:57,753 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fdc7bf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:54:57, skipping insertion in model container
[2020-09-24 16:54:57,753 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:54:57" (3/3) ...
[2020-09-24 16:54:57,755 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec4_product38.cil.c
[2020-09-24 16:54:57,767 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 16:54:57,779 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 16:54:57,801 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 16:54:57,833 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 16:54:57,833 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 16:54:57,834 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 16:54:57,834 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 16:54:57,834 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 16:54:57,834 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 16:54:57,834 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 16:54:57,834 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 16:54:57,860 INFO  L276                IsEmpty]: Start isEmpty. Operand 310 states.
[2020-09-24 16:54:57,879 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 143
[2020-09-24 16:54:57,879 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:54:57,881 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 16:54:57,881 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:54:57,889 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:54:57,890 INFO  L82        PathProgramCache]: Analyzing trace with hash 1971275482, now seen corresponding path program 1 times
[2020-09-24 16:54:57,901 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:54:57,902 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430323494]
[2020-09-24 16:54:57,902 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:54:58,307 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:54:58,488 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:58,658 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:00,224 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:01,360 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:11,735 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:13,895 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:13,895 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 173
[2020-09-24 16:55:13,895 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 5
[2020-09-24 16:55:13,896 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 15576
[2020-09-24 16:55:13,898 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:13,898 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 16
[2020-09-24 16:55:13,899 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 78
[2020-09-24 16:55:13,899 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 79
[2020-09-24 16:55:13,900 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-24 16:55:14,440 WARN  L193               SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-09-24 16:55:14,446 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 16:55:14,499 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:14,537 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:14,735 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:14,736 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 85
[2020-09-24 16:55:14,736 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:14,736 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 235
[2020-09-24 16:55:14,736 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:14,737 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:55:14,737 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:55:14,737 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 74
[2020-09-24 16:55:14,737 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:55:14,799 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-09-24 16:55:14,801 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:14,802 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:14,805 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:14,806 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:55:14,806 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:14,806 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 16:55:14,807 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:14,807 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:55:14,807 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:55:14,808 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 16:55:14,808 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:55:14,810 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-09-24 16:55:14,812 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:14,813 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:14,815 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:14,816 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:55:14,816 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:14,816 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 16:55:14,817 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:14,817 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:55:14,817 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:55:14,817 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 16:55:14,817 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:55:14,819 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-09-24 16:55:14,820 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:14,823 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:14,831 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:14,831 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:55:14,832 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:14,832 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-09-24 16:55:14,832 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:14,833 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:55:14,833 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:55:14,834 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 16:55:14,834 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:55:14,836 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-09-24 16:55:14,837 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:14,839 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:14,841 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:14,842 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:55:14,842 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:14,842 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 16:55:14,842 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:14,843 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:55:14,843 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:55:14,843 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 16:55:14,843 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:55:14,845 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120
[2020-09-24 16:55:14,846 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:14,848 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:14,856 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:14,856 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:55:14,856 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:14,857 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-09-24 16:55:14,857 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:14,858 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 16:55:14,858 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:55:14,858 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 16:55:14,859 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:55:14,891 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130
[2020-09-24 16:55:14,892 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:14,894 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:14,895 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:14,896 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:55:14,896 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:14,896 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:55:14,896 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:14,897 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:55:14,897 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 16:55:14,898 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:55:14,898 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:55:14,941 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 16:55:14,942 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430323494]
[2020-09-24 16:55:14,945 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 16:55:14,946 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-09-24 16:55:14,947 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870864822]
[2020-09-24 16:55:14,956 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-09-24 16:55:14,957 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 16:55:14,981 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-09-24 16:55:14,983 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2020-09-24 16:55:14,986 INFO  L87              Difference]: Start difference. First operand 310 states. Second operand 8 states.
[2020-09-24 16:55:15,557 WARN  L193               SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 16:55:16,564 WARN  L193               SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 16:55:16,934 WARN  L193               SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-09-24 16:55:17,371 WARN  L193               SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 16:55:17,796 WARN  L193               SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 16:55:18,136 WARN  L193               SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-09-24 16:55:18,499 WARN  L193               SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 16:55:18,831 WARN  L193               SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 16:55:20,929 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 16:55:20,929 INFO  L93              Difference]: Finished difference Result 643 states and 790 transitions.
[2020-09-24 16:55:20,934 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-09-24 16:55:20,935 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 142
[2020-09-24 16:55:20,937 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 16:55:20,959 INFO  L225             Difference]: With dead ends: 643
[2020-09-24 16:55:20,959 INFO  L226             Difference]: Without dead ends: 444
[2020-09-24 16:55:20,966 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240
[2020-09-24 16:55:20,990 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 444 states.
[2020-09-24 16:55:21,147 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 400.
[2020-09-24 16:55:21,149 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 400 states.
[2020-09-24 16:55:21,153 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 450 transitions.
[2020-09-24 16:55:21,157 INFO  L78                 Accepts]: Start accepts. Automaton has 400 states and 450 transitions. Word has length 142
[2020-09-24 16:55:21,163 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 16:55:21,164 INFO  L479      AbstractCegarLoop]: Abstraction has 400 states and 450 transitions.
[2020-09-24 16:55:21,164 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-09-24 16:55:21,164 INFO  L276                IsEmpty]: Start isEmpty. Operand 400 states and 450 transitions.
[2020-09-24 16:55:21,179 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 149
[2020-09-24 16:55:21,179 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:55:21,180 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 16:55:21,180 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 16:55:21,180 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:55:21,181 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:55:21,181 INFO  L82        PathProgramCache]: Analyzing trace with hash -619705205, now seen corresponding path program 1 times
[2020-09-24 16:55:21,181 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:55:21,181 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91838847]
[2020-09-24 16:55:21,181 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:55:21,248 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:21,305 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:21,397 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:22,310 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:27,016 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:30,321 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:30,322 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 181
[2020-09-24 16:55:30,322 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-09-24 16:55:30,322 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9070
[2020-09-24 16:55:30,322 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:30,322 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-09-24 16:55:30,323 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 81
[2020-09-24 16:55:30,323 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 67
[2020-09-24 16:55:30,323 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:55:30,623 WARN  L193               SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-09-24 16:55:30,625 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 16:55:30,656 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:30,689 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:30,873 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:30,873 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 85
[2020-09-24 16:55:30,873 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:30,873 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 215
[2020-09-24 16:55:30,874 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:30,874 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:55:30,874 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:55:30,874 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 77
[2020-09-24 16:55:30,874 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:55:30,921 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-09-24 16:55:30,922 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:30,923 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:30,925 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:30,925 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:55:30,926 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:30,926 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:55:30,926 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:30,926 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:55:30,926 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:55:30,927 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 16:55:30,927 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:55:30,928 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-09-24 16:55:30,929 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:30,930 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:30,932 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:30,932 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:55:30,933 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:30,933 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:55:30,933 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:30,933 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:55:30,933 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:55:30,934 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 16:55:30,934 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:55:30,935 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-09-24 16:55:30,936 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:30,938 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:30,944 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:30,944 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:55:30,944 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:30,944 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-24 16:55:30,945 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:30,945 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:55:30,945 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:55:30,945 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 16:55:30,945 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:55:30,947 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-09-24 16:55:30,948 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:30,949 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:30,951 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:30,951 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:55:30,951 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:30,952 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:55:30,952 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:30,952 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:55:30,952 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:55:30,952 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 16:55:30,953 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:55:30,960 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117
[2020-09-24 16:55:30,962 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:30,963 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:30,969 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:30,970 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-24 16:55:30,970 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:30,970 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-24 16:55:30,970 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:30,971 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:55:30,971 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:55:30,971 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-24 16:55:30,971 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:55:30,973 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126
[2020-09-24 16:55:30,974 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:30,975 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:30,976 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:30,977 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:55:30,977 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:30,977 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:55:30,977 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:30,978 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:55:30,978 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 16:55:30,978 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:55:30,978 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:55:30,980 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136
[2020-09-24 16:55:30,980 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:30,982 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:30,983 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:30,983 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:55:30,984 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:30,984 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:55:30,984 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:30,984 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:55:30,984 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 16:55:30,985 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:55:30,985 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:55:31,015 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 16:55:31,016 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91838847]
[2020-09-24 16:55:31,016 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 16:55:31,017 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-24 16:55:31,017 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851197224]
[2020-09-24 16:55:31,019 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 16:55:31,019 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 16:55:31,019 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 16:55:31,020 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-09-24 16:55:31,020 INFO  L87              Difference]: Start difference. First operand 400 states and 450 transitions. Second operand 5 states.
[2020-09-24 16:55:31,553 WARN  L193               SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 16:55:32,924 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 16:55:32,924 INFO  L93              Difference]: Finished difference Result 741 states and 888 transitions.
[2020-09-24 16:55:32,925 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-09-24 16:55:32,925 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 148
[2020-09-24 16:55:32,926 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 16:55:32,931 INFO  L225             Difference]: With dead ends: 741
[2020-09-24 16:55:32,932 INFO  L226             Difference]: Without dead ends: 451
[2020-09-24 16:55:32,936 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 16:55:32,937 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 451 states.
[2020-09-24 16:55:33,005 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 396.
[2020-09-24 16:55:33,005 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 396 states.
[2020-09-24 16:55:33,008 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 441 transitions.
[2020-09-24 16:55:33,009 INFO  L78                 Accepts]: Start accepts. Automaton has 396 states and 441 transitions. Word has length 148
[2020-09-24 16:55:33,009 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 16:55:33,010 INFO  L479      AbstractCegarLoop]: Abstraction has 396 states and 441 transitions.
[2020-09-24 16:55:33,010 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 16:55:33,010 INFO  L276                IsEmpty]: Start isEmpty. Operand 396 states and 441 transitions.
[2020-09-24 16:55:33,013 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 175
[2020-09-24 16:55:33,014 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:55:33,014 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, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 16:55:33,014 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 16:55:33,015 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:55:33,015 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:55:33,015 INFO  L82        PathProgramCache]: Analyzing trace with hash 799967418, now seen corresponding path program 1 times
[2020-09-24 16:55:33,015 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:55:33,016 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339779926]
[2020-09-24 16:55:33,016 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:55:33,060 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:33,120 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:33,313 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:33,629 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:34,839 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:35,936 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:36,111 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:36,698 FATAL L256   erpolLogProxyWrapper]: Now shrinking...