/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_spec5_product37.cil.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 16:58:02,601 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 16:58:02,606 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 16:58:02,650 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 16:58:02,652 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 16:58:02,663 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 16:58:02,666 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 16:58:02,669 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 16:58:02,671 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 16:58:02,672 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 16:58:02,673 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 16:58:02,674 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 16:58:02,674 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 16:58:02,676 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 16:58:02,677 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 16:58:02,678 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 16:58:02,679 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 16:58:02,680 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 16:58:02,682 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 16:58:02,684 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 16:58:02,685 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 16:58:02,686 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 16:58:02,688 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 16:58:02,689 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 16:58:02,691 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 16:58:02,692 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 16:58:02,692 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 16:58:02,693 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 16:58:02,694 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 16:58:02,695 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 16:58:02,695 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 16:58:02,696 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 16:58:02,697 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 16:58:02,698 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 16:58:02,699 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 16:58:02,700 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 16:58:02,700 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 16:58:02,701 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 16:58:02,701 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 16:58:02,702 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 16:58:02,703 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 16:58:02,704 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 16:58:02,730 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 16:58:02,731 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 16:58:02,732 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 16:58:02,732 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 16:58:02,733 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 16:58:02,733 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 16:58:02,733 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 16:58:02,733 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 16:58:02,734 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 16:58:02,734 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 16:58:02,734 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 16:58:02,734 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 16:58:02,734 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 16:58:02,735 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 16:58:02,735 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 16:58:02,735 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 16:58:02,735 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 16:58:02,735 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 16:58:02,736 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 16:58:02,736 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 16:58:02,736 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 16:58:02,736 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 16:58:02,736 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 16:58:02,737 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 16:58:02,737 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 16:58:02,737 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 16:58:02,737 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 16:58:02,737 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 16:58:02,738 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 16:58:02,738 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 16:58:03,225 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 16:58:03,248 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 16:58:03,255 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 16:58:03,256 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 16:58:03,258 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 16:58:03,259 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product37.cil.c
[2020-09-24 16:58:03,340 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d365630d6/e8cea528ad0b481db5c810932feda34e/FLAG003c9f1cc
[2020-09-24 16:58:03,923 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 16:58:03,924 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product37.cil.c
[2020-09-24 16:58:03,943 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d365630d6/e8cea528ad0b481db5c810932feda34e/FLAG003c9f1cc
[2020-09-24 16:58:04,212 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d365630d6/e8cea528ad0b481db5c810932feda34e
[2020-09-24 16:58:04,228 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 16:58:04,234 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 16:58:04,236 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 16:58:04,237 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 16:58:04,241 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 16:58:04,242 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:58:04" (1/1) ...
[2020-09-24 16:58:04,249 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f80c8bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:58:04, skipping insertion in model container
[2020-09-24 16:58:04,249 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:58:04" (1/1) ...
[2020-09-24 16:58:04,259 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 16:58:04,341 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 16:58:04,758 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 16:58:04,875 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 16:58:04,998 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 16:58:05,040 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 16:58:05,042 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:58:05 WrapperNode
[2020-09-24 16:58:05,042 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 16:58:05,043 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 16:58:05,043 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 16:58:05,043 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 16:58:05,059 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:58:05" (1/1) ...
[2020-09-24 16:58:05,059 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:58:05" (1/1) ...
[2020-09-24 16:58:05,083 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:58:05" (1/1) ...
[2020-09-24 16:58:05,084 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:58:05" (1/1) ...
[2020-09-24 16:58:05,119 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:58:05" (1/1) ...
[2020-09-24 16:58:05,130 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:58:05" (1/1) ...
[2020-09-24 16:58:05,136 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:58:05" (1/1) ...
[2020-09-24 16:58:05,144 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 16:58:05,144 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 16:58:05,145 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 16:58:05,145 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 16:58:05,146 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:58:05" (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 16:58:05,220 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 16:58:05,221 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 16:58:05,221 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-09-24 16:58:05,221 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-09-24 16:58:05,221 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-09-24 16:58:05,221 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-09-24 16:58:05,222 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-09-24 16:58:05,222 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-09-24 16:58:05,222 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-09-24 16:58:05,222 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry
[2020-09-24 16:58:05,222 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1
[2020-09-24 16:58:05,223 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2
[2020-09-24 16:58:05,223 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3
[2020-09-24 16:58:05,223 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-09-24 16:58:05,223 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-09-24 16:58:05,223 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-09-24 16:58:05,224 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-09-24 16:58:05,224 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 16:58:05,224 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-09-24 16:58:05,224 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-09-24 16:58:05,225 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base
[2020-09-24 16:58:05,225 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor
[2020-09-24 16:58:05,225 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-09-24 16:58:05,225 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-09-24 16:58:05,225 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-09-24 16:58:05,225 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-09-24 16:58:05,226 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-09-24 16:58:05,226 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-09-24 16:58:05,226 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterLevel
[2020-09-24 16:58:05,226 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-09-24 16:58:05,226 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-09-24 16:58:05,226 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-09-24 16:58:05,227 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-09-24 16:58:05,227 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-09-24 16:58:05,227 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-09-24 16:58:05,227 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-09-24 16:58:05,227 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-09-24 16:58:05,227 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-09-24 16:58:05,228 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-09-24 16:58:05,228 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-09-24 16:58:05,228 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 16:58:05,228 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 16:58:05,228 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-09-24 16:58:05,228 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-09-24 16:58:05,229 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-09-24 16:58:05,229 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-09-24 16:58:05,229 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-09-24 16:58:05,229 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-09-24 16:58:05,229 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-09-24 16:58:05,229 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry
[2020-09-24 16:58:05,230 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-24 16:58:05,230 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-09-24 16:58:05,230 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-09-24 16:58:05,230 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1
[2020-09-24 16:58:05,230 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2
[2020-09-24 16:58:05,230 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3
[2020-09-24 16:58:05,231 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-09-24 16:58:05,231 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-09-24 16:58:05,231 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-09-24 16:58:05,231 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-09-24 16:58:05,231 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-09-24 16:58:05,231 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-09-24 16:58:05,232 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-09-24 16:58:05,232 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-09-24 16:58:05,232 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-09-24 16:58:05,232 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-09-24 16:58:05,232 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 16:58:05,233 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-09-24 16:58:05,233 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-09-24 16:58:05,233 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-09-24 16:58:05,233 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base
[2020-09-24 16:58:05,233 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterLevel
[2020-09-24 16:58:05,233 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor
[2020-09-24 16:58:05,233 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-09-24 16:58:05,234 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-09-24 16:58:05,234 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-09-24 16:58:05,234 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-09-24 16:58:05,234 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-09-24 16:58:05,234 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-09-24 16:58:05,235 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-09-24 16:58:05,235 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-09-24 16:58:05,235 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-09-24 16:58:05,235 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-09-24 16:58:05,235 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-09-24 16:58:05,236 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-24 16:58:05,236 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-09-24 16:58:05,236 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-09-24 16:58:05,236 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-09-24 16:58:05,236 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-09-24 16:58:05,236 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-09-24 16:58:05,237 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-09-24 16:58:05,237 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 16:58:05,237 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-09-24 16:58:05,237 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 16:58:06,404 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 16:58:06,404 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-09-24 16:58:06,412 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:58:06 BoogieIcfgContainer
[2020-09-24 16:58:06,412 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 16:58:06,413 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 16:58:06,413 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 16:58:06,417 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 16:58:06,418 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:58:04" (1/3) ...
[2020-09-24 16:58:06,419 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f88aab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:58:06, skipping insertion in model container
[2020-09-24 16:58:06,419 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:58:05" (2/3) ...
[2020-09-24 16:58:06,419 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f88aab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:58:06, skipping insertion in model container
[2020-09-24 16:58:06,419 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:58:06" (3/3) ...
[2020-09-24 16:58:06,422 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec5_product37.cil.c
[2020-09-24 16:58:06,434 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 16:58:06,445 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 16:58:06,469 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 16:58:06,506 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 16:58:06,506 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 16:58:06,507 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 16:58:06,507 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 16:58:06,507 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 16:58:06,507 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 16:58:06,507 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 16:58:06,507 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 16:58:06,541 INFO  L276                IsEmpty]: Start isEmpty. Operand 319 states.
[2020-09-24 16:58:06,561 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 161
[2020-09-24 16:58:06,562 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:58:06,563 INFO  L422         BasicCegarLoop]: trace histogram [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]
[2020-09-24 16:58:06,564 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:58:06,572 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:58:06,573 INFO  L82        PathProgramCache]: Analyzing trace with hash -749536702, now seen corresponding path program 1 times
[2020-09-24 16:58:06,586 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:58:06,586 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954560400]
[2020-09-24 16:58:06,587 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:58:07,014 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:58:07,170 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:58:07,352 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:58:07,912 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:58:08,140 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:58:10,053 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:58:20,855 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:58:20,856 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 197
[2020-09-24 16:58:20,856 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 5
[2020-09-24 16:58:20,856 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 13831
[2020-09-24 16:58:20,859 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:58:20,859 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:58:20,859 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 136
[2020-09-24 16:58:20,860 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:58:20,860 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-09-24 16:58:21,452 WARN  L193               SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-09-24 16:58:21,456 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 16:58:21,485 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:58:21,499 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:58:21,607 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:58:21,607 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 86
[2020-09-24 16:58:21,607 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:58:21,608 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 120
[2020-09-24 16:58:21,608 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:58:21,608 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:58:21,609 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:58:21,609 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:58:21,610 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:58:21,685 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84
[2020-09-24 16:58:21,686 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:58:21,688 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:58:21,689 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:58:21,690 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:58:21,690 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:58:21,690 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:58:21,690 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:58:21,691 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:58:21,692 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:58:21,692 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:58:21,693 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-24 16:58:21,695 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87
[2020-09-24 16:58:21,696 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:58:21,697 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:58:21,699 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:58:21,699 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:58:21,700 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:58:21,700 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:58:21,700 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:58:21,700 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:58:21,701 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:58:21,701 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:58:21,701 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:58:21,703 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90
[2020-09-24 16:58:21,704 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:58:21,706 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:58:21,710 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:58:21,710 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:58:21,711 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:58:21,711 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-24 16:58:21,711 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:58:21,711 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:58:21,712 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:58:21,712 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:58:21,712 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:58:21,714 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100
[2020-09-24 16:58:21,714 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:58:21,716 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:58:21,718 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:58:21,718 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:58:21,718 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:58:21,718 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 16:58:21,719 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:58:21,719 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:58:21,719 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:58:21,719 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:58:21,720 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:58:21,731 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104
[2020-09-24 16:58:21,732 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:58:21,734 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:58:21,736 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:58:21,736 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-09-24 16:58:21,736 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:58:21,737 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 16:58:21,737 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:58:21,739 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:58:21,739 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:58:21,739 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:58:21,739 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:58:21,741 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120
[2020-09-24 16:58:21,747 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:58:21,749 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:58:21,757 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:58:21,757 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 19
[2020-09-24 16:58:21,757 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:58:21,763 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-09-24 16:58:21,763 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:58:21,764 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:58:21,764 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 16
[2020-09-24 16:58:21,764 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:58:21,764 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:58:21,767 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 16:58:21,768 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:58:21,770 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:58:21,773 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:58:21,773 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:58:21,773 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:58:21,773 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 16:58:21,774 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:58:21,774 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:58:21,774 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:58:21,774 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:58:21,775 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:58:21,777 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137
[2020-09-24 16:58:21,779 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:58:21,781 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:58:21,783 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:58:21,783 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:58:21,783 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:58:21,783 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:58:21,784 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:58:21,784 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:58:21,784 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 16:58:21,784 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:58:21,784 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:58:21,786 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147
[2020-09-24 16:58:21,787 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:58:21,789 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:58:21,790 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:58:21,790 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:58:21,791 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:58:21,795 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:58:21,796 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:58:21,796 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:58:21,796 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 16:58:21,796 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:58:21,797 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:58:21,834 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2020-09-24 16:58:21,834 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954560400]
[2020-09-24 16:58:21,837 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 16:58:21,837 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-24 16:58:21,838 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017869681]
[2020-09-24 16:58:21,847 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-24 16:58:21,847 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 16:58:21,872 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-24 16:58:21,874 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2020-09-24 16:58:21,876 INFO  L87              Difference]: Start difference. First operand 319 states. Second operand 4 states.
[2020-09-24 16:58:23,346 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 16:58:23,346 INFO  L93              Difference]: Finished difference Result 495 states and 579 transitions.
[2020-09-24 16:58:23,348 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-09-24 16:58:23,349 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 160
[2020-09-24 16:58:23,350 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 16:58:23,371 INFO  L225             Difference]: With dead ends: 495
[2020-09-24 16:58:23,371 INFO  L226             Difference]: Without dead ends: 312
[2020-09-24 16:58:23,378 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2020-09-24 16:58:23,403 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 312 states.
[2020-09-24 16:58:23,487 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 268.
[2020-09-24 16:58:23,489 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 268 states.
[2020-09-24 16:58:23,491 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 291 transitions.
[2020-09-24 16:58:23,494 INFO  L78                 Accepts]: Start accepts. Automaton has 268 states and 291 transitions. Word has length 160
[2020-09-24 16:58:23,495 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 16:58:23,495 INFO  L479      AbstractCegarLoop]: Abstraction has 268 states and 291 transitions.
[2020-09-24 16:58:23,495 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-24 16:58:23,495 INFO  L276                IsEmpty]: Start isEmpty. Operand 268 states and 291 transitions.
[2020-09-24 16:58:23,500 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 162
[2020-09-24 16:58:23,500 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:58:23,501 INFO  L422         BasicCegarLoop]: trace histogram [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]
[2020-09-24 16:58:23,501 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 16:58:23,501 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:58:23,502 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:58:23,502 INFO  L82        PathProgramCache]: Analyzing trace with hash 839621270, now seen corresponding path program 1 times
[2020-09-24 16:58:23,502 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:58:23,503 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935778008]
[2020-09-24 16:58:23,503 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:58:23,551 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:58:23,625 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:58:23,717 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:58:24,136 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:58:24,360 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:58:26,404 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:58:37,766 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:58:37,767 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 198
[2020-09-24 16:58:37,767 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 5
[2020-09-24 16:58:37,767 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 14211
[2020-09-24 16:58:37,767 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:58:37,767 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 10
[2020-09-24 16:58:37,768 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 153
[2020-09-24 16:58:37,768 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 41
[2020-09-24 16:58:37,768 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:58:38,266 WARN  L193               SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-09-24 16:58:38,268 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 16:58:38,279 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:58:38,292 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:58:38,399 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:58:38,399 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 86
[2020-09-24 16:58:38,399 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:58:38,400 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 115
[2020-09-24 16:58:38,400 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:58:38,401 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:58:38,401 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:58:38,401 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:58:38,402 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:58:38,446 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84
[2020-09-24 16:58:38,447 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:58:38,448 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:58:38,450 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:58:38,450 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:58:38,450 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:58:38,451 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:58:38,451 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:58:38,451 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:58:38,451 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:58:38,452 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:58:38,452 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:58:38,453 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87
[2020-09-24 16:58:38,454 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:58:38,455 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:58:38,457 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:58:38,457 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:58:38,458 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:58:38,458 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:58:38,458 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:58:38,459 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:58:38,459 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:58:38,459 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:58:38,460 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:58:38,461 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90
[2020-09-24 16:58:38,462 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:58:38,463 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:58:38,467 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:58:38,467 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:58:38,468 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:58:38,468 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 16:58:38,468 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:58:38,469 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:58:38,469 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:58:38,469 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:58:38,470 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:58:38,472 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100
[2020-09-24 16:58:38,473 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:58:38,474 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:58:38,476 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:58:38,476 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:58:38,476 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:58:38,477 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:58:38,477 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:58:38,477 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:58:38,478 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:58:38,478 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:58:38,478 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:58:38,501 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104
[2020-09-24 16:58:38,502 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:58:38,504 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:58:38,506 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:58:38,506 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-09-24 16:58:38,506 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:58:38,507 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 16:58:38,508 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:58:38,511 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:58:38,511 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:58:38,511 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:58:38,513 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 5
[2020-09-24 16:58:38,514 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2020-09-24 16:58:38,516 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:58:38,519 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:58:38,528 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:58:38,529 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 19
[2020-09-24 16:58:38,529 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:58:38,529 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-09-24 16:58:38,530 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:58:38,530 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 16:58:38,531 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:58:38,532 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 11
[2020-09-24 16:58:38,532 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-24 16:58:38,555 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 16:58:38,556 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:58:38,557 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:58:38,562 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:58:38,563 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:58:38,563 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:58:38,563 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-24 16:58:38,564 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:58:38,564 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 16:58:38,564 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:58:38,564 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-24 16:58:38,564 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:58:38,603 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138
[2020-09-24 16:58:38,604 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:58:38,606 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:58:38,610 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:58:38,610 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:58:38,611 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:58:38,611 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 16:58:38,611 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:58:38,611 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:58:38,611 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:58:38,612 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 16:58:38,612 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:58:38,614 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148
[2020-09-24 16:58:38,615 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:58:38,617 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:58:38,625 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:58:38,625 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:58:38,625 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:58:38,625 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-09-24 16:58:38,626 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:58:38,626 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 16:58:38,626 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:58:38,626 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 16:58:38,626 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:58:38,677 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2020-09-24 16:58:38,677 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935778008]
[2020-09-24 16:58:38,678 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 16:58:38,678 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2020-09-24 16:58:38,678 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289501640]
[2020-09-24 16:58:38,682 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-09-24 16:58:38,683 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 16:58:38,683 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-09-24 16:58:38,683 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110
[2020-09-24 16:58:38,684 INFO  L87              Difference]: Start difference. First operand 268 states and 291 transitions. Second operand 11 states.
[2020-09-24 16:58:39,812 WARN  L193               SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-09-24 16:58:40,116 WARN  L193               SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-09-24 16:58:40,493 WARN  L193               SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-09-24 16:58:40,956 WARN  L193               SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-09-24 16:58:41,245 WARN  L193               SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 16:58:42,224 WARN  L193               SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-09-24 16:58:42,587 WARN  L193               SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 192
[2020-09-24 16:58:43,026 WARN  L193               SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-09-24 16:58:43,344 WARN  L193               SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 193
[2020-09-24 16:58:43,705 WARN  L193               SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 195
[2020-09-24 16:58:44,121 WARN  L193               SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 192
[2020-09-24 16:58:44,502 WARN  L193               SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-09-24 16:58:44,860 WARN  L193               SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 193
[2020-09-24 16:58:45,243 WARN  L193               SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 193
[2020-09-24 16:58:45,680 WARN  L193               SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 195
[2020-09-24 16:58:46,286 WARN  L193               SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-09-24 16:58:47,141 WARN  L193               SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 192
[2020-09-24 16:58:47,462 WARN  L193               SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 194
[2020-09-24 16:58:48,136 WARN  L193               SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-09-24 16:58:48,581 WARN  L193               SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 193
[2020-09-24 16:58:48,993 WARN  L193               SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 192
[2020-09-24 16:58:50,454 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 16:58:50,455 INFO  L93              Difference]: Finished difference Result 764 states and 978 transitions.
[2020-09-24 16:58:50,455 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. 
[2020-09-24 16:58:50,455 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 161
[2020-09-24 16:58:50,457 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 16:58:50,465 INFO  L225             Difference]: With dead ends: 764
[2020-09-24 16:58:50,465 INFO  L226             Difference]: Without dead ends: 611
[2020-09-24 16:58:50,469 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=280, Invalid=1052, Unknown=0, NotChecked=0, Total=1332
[2020-09-24 16:58:50,471 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 611 states.
[2020-09-24 16:58:50,562 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 526.
[2020-09-24 16:58:50,562 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 526 states.
[2020-09-24 16:58:50,567 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 632 transitions.
[2020-09-24 16:58:50,568 INFO  L78                 Accepts]: Start accepts. Automaton has 526 states and 632 transitions. Word has length 161
[2020-09-24 16:58:50,568 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 16:58:50,568 INFO  L479      AbstractCegarLoop]: Abstraction has 526 states and 632 transitions.
[2020-09-24 16:58:50,569 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-09-24 16:58:50,569 INFO  L276                IsEmpty]: Start isEmpty. Operand 526 states and 632 transitions.
[2020-09-24 16:58:50,575 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 236
[2020-09-24 16:58:50,575 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:58:50,575 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1]
[2020-09-24 16:58:50,575 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 16:58:50,576 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:58:50,576 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:58:50,576 INFO  L82        PathProgramCache]: Analyzing trace with hash 973390998, now seen corresponding path program 1 times
[2020-09-24 16:58:50,576 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:58:50,577 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660177579]
[2020-09-24 16:58:50,577 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:58:50,626 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:58:50,683 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:58:50,777 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:58:50,871 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:58:51,036 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:58:53,178 FATAL L256   erpolLogProxyWrapper]: Now shrinking...