/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_product21.cil.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 16:54:00,000 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 16:54:00,005 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 16:54:00,046 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 16:54:00,047 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 16:54:00,056 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 16:54:00,058 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 16:54:00,062 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 16:54:00,065 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 16:54:00,068 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 16:54:00,069 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 16:54:00,070 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 16:54:00,070 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 16:54:00,073 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 16:54:00,076 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 16:54:00,078 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 16:54:00,079 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 16:54:00,080 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 16:54:00,082 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 16:54:00,090 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 16:54:00,093 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 16:54:00,094 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 16:54:00,095 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 16:54:00,096 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 16:54:00,108 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 16:54:00,108 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 16:54:00,108 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 16:54:00,115 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 16:54:00,115 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 16:54:00,119 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 16:54:00,119 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 16:54:00,120 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 16:54:00,124 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 16:54:00,125 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 16:54:00,126 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 16:54:00,127 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 16:54:00,128 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 16:54:00,130 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 16:54:00,130 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 16:54:00,131 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 16:54:00,132 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 16:54:00,133 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 16:54:00,179 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 16:54:00,179 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 16:54:00,182 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 16:54:00,182 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 16:54:00,182 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 16:54:00,182 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 16:54:00,183 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 16:54:00,183 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 16:54:00,183 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 16:54:00,183 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 16:54:00,184 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 16:54:00,185 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 16:54:00,185 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 16:54:00,185 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 16:54:00,185 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 16:54:00,186 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 16:54:00,186 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 16:54:00,186 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 16:54:00,186 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 16:54:00,186 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 16:54:00,187 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 16:54:00,187 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 16:54:00,187 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 16:54:00,187 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 16:54:00,187 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 16:54:00,188 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 16:54:00,188 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 16:54:00,188 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 16:54:00,188 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 16:54:00,188 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 16:54:00,636 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 16:54:00,657 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 16:54:00,662 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 16:54:00,663 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 16:54:00,663 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 16:54:00,664 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product21.cil.c
[2020-09-24 16:54:00,739 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/439621be1/d0bed53ad4b74df2918c1d22138361a4/FLAG5941012a0
[2020-09-24 16:54:01,307 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 16:54:01,308 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product21.cil.c
[2020-09-24 16:54:01,324 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/439621be1/d0bed53ad4b74df2918c1d22138361a4/FLAG5941012a0
[2020-09-24 16:54:01,576 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/439621be1/d0bed53ad4b74df2918c1d22138361a4
[2020-09-24 16:54:01,590 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 16:54:01,596 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 16:54:01,597 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 16:54:01,598 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 16:54:01,603 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 16:54:01,604 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:54:01" (1/1) ...
[2020-09-24 16:54:01,608 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11cafb76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:01, skipping insertion in model container
[2020-09-24 16:54:01,609 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:54:01" (1/1) ...
[2020-09-24 16:54:01,618 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 16:54:01,673 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 16:54:02,278 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 16:54:02,297 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 16:54:02,377 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 16:54:02,416 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 16:54:02,416 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:02 WrapperNode
[2020-09-24 16:54:02,416 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 16:54:02,417 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 16:54:02,418 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 16:54:02,418 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 16:54:02,434 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:02" (1/1) ...
[2020-09-24 16:54:02,435 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:02" (1/1) ...
[2020-09-24 16:54:02,455 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:02" (1/1) ...
[2020-09-24 16:54:02,456 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:02" (1/1) ...
[2020-09-24 16:54:02,485 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:02" (1/1) ...
[2020-09-24 16:54:02,495 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:02" (1/1) ...
[2020-09-24 16:54:02,501 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:02" (1/1) ...
[2020-09-24 16:54:02,509 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 16:54:02,509 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 16:54:02,510 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 16:54:02,510 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 16:54:02,511 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:02" (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 16:54:02,608 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 16:54:02,608 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 16:54:02,608 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-09-24 16:54:02,609 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-09-24 16:54:02,609 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base
[2020-09-24 16:54:02,609 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor
[2020-09-24 16:54:02,609 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-09-24 16:54:02,609 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-09-24 16:54:02,610 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-09-24 16:54:02,610 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-09-24 16:54:02,610 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-09-24 16:54:02,610 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-09-24 16:54:02,610 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterLevel
[2020-09-24 16:54:02,611 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-09-24 16:54:02,611 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-09-24 16:54:02,611 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-09-24 16:54:02,611 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-09-24 16:54:02,611 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-09-24 16:54:02,612 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-09-24 16:54:02,612 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-09-24 16:54:02,612 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-09-24 16:54:02,612 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-09-24 16:54:02,612 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-09-24 16:54:02,613 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-09-24 16:54:02,613 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-09-24 16:54:02,613 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-09-24 16:54:02,613 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-09-24 16:54:02,613 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-09-24 16:54:02,613 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-09-24 16:54:02,614 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 16:54:02,614 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1
[2020-09-24 16:54:02,614 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-09-24 16:54:02,614 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-09-24 16:54:02,614 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-09-24 16:54:02,615 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-09-24 16:54:02,615 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-09-24 16:54:02,615 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-09-24 16:54:02,615 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry
[2020-09-24 16:54:02,615 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 16:54:02,615 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 16:54:02,616 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-09-24 16:54:02,616 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-09-24 16:54:02,616 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-09-24 16:54:02,616 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-09-24 16:54:02,616 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry
[2020-09-24 16:54:02,616 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-09-24 16:54:02,616 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-09-24 16:54:02,617 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-09-24 16:54:02,617 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-09-24 16:54:02,617 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-09-24 16:54:02,617 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1
[2020-09-24 16:54:02,617 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-09-24 16:54:02,617 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base
[2020-09-24 16:54:02,618 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterLevel
[2020-09-24 16:54:02,618 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor
[2020-09-24 16:54:02,618 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-09-24 16:54:02,618 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-24 16:54:02,618 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-09-24 16:54:02,618 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-09-24 16:54:02,619 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-09-24 16:54:02,619 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-09-24 16:54:02,619 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-09-24 16:54:02,619 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-09-24 16:54:02,619 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-09-24 16:54:02,619 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-09-24 16:54:02,619 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-09-24 16:54:02,620 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-09-24 16:54:02,620 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-09-24 16:54:02,620 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-09-24 16:54:02,620 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-09-24 16:54:02,620 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-09-24 16:54:02,620 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-24 16:54:02,621 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-09-24 16:54:02,621 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-09-24 16:54:02,621 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-09-24 16:54:02,621 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-09-24 16:54:02,621 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-09-24 16:54:02,621 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-09-24 16:54:02,622 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-09-24 16:54:02,622 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-09-24 16:54:02,622 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-09-24 16:54:02,622 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-09-24 16:54:02,622 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-09-24 16:54:02,622 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-09-24 16:54:02,623 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-09-24 16:54:02,623 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 16:54:02,623 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-09-24 16:54:02,623 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 16:54:02,623 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-09-24 16:54:02,623 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 16:54:03,848 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 16:54:03,848 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-09-24 16:54:03,864 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:54:03 BoogieIcfgContainer
[2020-09-24 16:54:03,864 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 16:54:03,867 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 16:54:03,867 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 16:54:03,871 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 16:54:03,872 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:54:01" (1/3) ...
[2020-09-24 16:54:03,873 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18589243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:54:03, skipping insertion in model container
[2020-09-24 16:54:03,873 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:02" (2/3) ...
[2020-09-24 16:54:03,874 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18589243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:54:03, skipping insertion in model container
[2020-09-24 16:54:03,875 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:54:03" (3/3) ...
[2020-09-24 16:54:03,877 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec4_product21.cil.c
[2020-09-24 16:54:03,890 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 16:54:03,907 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 16:54:03,931 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 16:54:03,970 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 16:54:03,971 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 16:54:03,971 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 16:54:03,971 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 16:54:03,971 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 16:54:03,971 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 16:54:03,971 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 16:54:03,972 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 16:54:03,995 INFO  L276                IsEmpty]: Start isEmpty. Operand 300 states.
[2020-09-24 16:54:04,012 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 143
[2020-09-24 16:54:04,013 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:54:04,014 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]
[2020-09-24 16:54:04,015 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:54:04,021 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:54:04,021 INFO  L82        PathProgramCache]: Analyzing trace with hash 1301748271, now seen corresponding path program 1 times
[2020-09-24 16:54:04,032 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:54:04,032 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826530614]
[2020-09-24 16:54:04,033 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:54:04,401 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:54:04,568 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:04,785 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:05,247 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:06,558 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:06,755 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:26,647 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:54:26,648 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 173
[2020-09-24 16:54:26,648 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 5
[2020-09-24 16:54:26,648 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 22235
[2020-09-24 16:54:26,650 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:54:26,650 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 16
[2020-09-24 16:54:26,651 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 81
[2020-09-24 16:54:26,651 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 76
[2020-09-24 16:54:26,651 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-24 16:54:27,155 WARN  L193               SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-09-24 16:54:27,158 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 16:54:27,202 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:54:27,241 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:27,434 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:54:27,435 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 85
[2020-09-24 16:54:27,435 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:54:27,435 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 231
[2020-09-24 16:54:27,435 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:54:27,436 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:54:27,436 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:54:27,436 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 77
[2020-09-24 16:54:27,436 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:54:27,496 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-09-24 16:54:27,498 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:54:27,499 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:27,502 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:54:27,502 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:54:27,502 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:54:27,503 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 16:54:27,503 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:54:27,503 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:54:27,503 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:54:27,504 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 16:54:27,504 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:54:27,506 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-09-24 16:54:27,507 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:54:27,509 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:27,511 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:54:27,511 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:54:27,512 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:54:27,512 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 16:54:27,512 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:54:27,512 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:54:27,513 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:54:27,513 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 16:54:27,513 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:54:27,515 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-09-24 16:54:27,516 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:54:27,518 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:27,525 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:54:27,525 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:54:27,526 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:54:27,526 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-09-24 16:54:27,526 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:54:27,526 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:54:27,527 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:54:27,527 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 16:54:27,527 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:54:27,529 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-09-24 16:54:27,530 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:54:27,532 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:27,534 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:54:27,535 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:54:27,535 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:54:27,535 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 16:54:27,535 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:54:27,536 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:54:27,536 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:54:27,536 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 16:54:27,536 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:54:27,538 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120
[2020-09-24 16:54:27,539 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:54:27,541 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:27,548 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:54:27,548 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:54:27,548 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:54:27,548 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-24 16:54:27,549 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:54:27,549 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 16:54:27,549 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:54:27,549 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 16:54:27,549 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:54:27,578 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130
[2020-09-24 16:54:27,579 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:54:27,581 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:27,583 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:54:27,583 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:54:27,583 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:54:27,583 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:54:27,584 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:54:27,584 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:54:27,584 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 16:54:27,584 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:54:27,585 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:54:27,616 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 16:54:27,617 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826530614]
[2020-09-24 16:54:27,619 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 16:54:27,620 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-09-24 16:54:27,621 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414594321]
[2020-09-24 16:54:27,628 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-09-24 16:54:27,628 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 16:54:27,648 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-09-24 16:54:27,649 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2020-09-24 16:54:27,652 INFO  L87              Difference]: Start difference. First operand 300 states. Second operand 8 states.
[2020-09-24 16:54:28,305 WARN  L193               SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 16:54:29,269 WARN  L193               SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 16:54:29,598 WARN  L193               SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-09-24 16:54:30,064 WARN  L193               SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 16:54:30,487 WARN  L193               SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 16:54:30,860 WARN  L193               SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-09-24 16:54:31,193 WARN  L193               SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 16:54:31,519 WARN  L193               SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 16:54:33,484 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 16:54:33,485 INFO  L93              Difference]: Finished difference Result 614 states and 755 transitions.
[2020-09-24 16:54:33,485 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-09-24 16:54:33,487 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 142
[2020-09-24 16:54:33,488 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 16:54:33,525 INFO  L225             Difference]: With dead ends: 614
[2020-09-24 16:54:33,525 INFO  L226             Difference]: Without dead ends: 425
[2020-09-24 16:54:33,531 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 16:54:33,556 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 425 states.
[2020-09-24 16:54:33,680 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 382.
[2020-09-24 16:54:33,682 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 382 states.
[2020-09-24 16:54:33,686 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 433 transitions.
[2020-09-24 16:54:33,688 INFO  L78                 Accepts]: Start accepts. Automaton has 382 states and 433 transitions. Word has length 142
[2020-09-24 16:54:33,689 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 16:54:33,690 INFO  L479      AbstractCegarLoop]: Abstraction has 382 states and 433 transitions.
[2020-09-24 16:54:33,690 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-09-24 16:54:33,690 INFO  L276                IsEmpty]: Start isEmpty. Operand 382 states and 433 transitions.
[2020-09-24 16:54:33,696 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 149
[2020-09-24 16:54:33,696 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:54:33,697 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 16:54:33,697 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 16:54:33,697 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:54:33,698 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:54:33,698 INFO  L82        PathProgramCache]: Analyzing trace with hash 1894176123, now seen corresponding path program 1 times
[2020-09-24 16:54:33,698 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:54:33,698 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024529717]
[2020-09-24 16:54:33,698 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:54:33,745 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:54:33,793 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:33,880 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:34,685 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:37,720 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:40,842 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:54:40,843 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 181
[2020-09-24 16:54:40,843 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-09-24 16:54:40,843 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7094
[2020-09-24 16:54:40,843 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:54:40,844 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:54:40,844 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 78
[2020-09-24 16:54:40,844 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 70
[2020-09-24 16:54:40,844 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:54:41,171 WARN  L193               SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-09-24 16:54:41,172 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 16:54:41,201 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:54:41,233 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:41,398 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:54:41,398 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 85
[2020-09-24 16:54:41,398 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:54:41,398 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 195
[2020-09-24 16:54:41,398 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:54:41,399 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:54:41,399 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:54:41,399 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 74
[2020-09-24 16:54:41,399 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:54:41,459 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-09-24 16:54:41,460 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:54:41,461 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:41,464 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:54:41,464 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:54:41,464 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:54:41,464 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 16:54:41,464 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:54:41,465 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:54:41,465 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:54:41,465 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 16:54:41,465 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:54:41,467 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-09-24 16:54:41,467 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:54:41,469 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:41,471 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:54:41,471 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:54:41,472 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:54:41,472 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 16:54:41,472 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:54:41,472 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:54:41,473 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:54:41,473 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 16:54:41,473 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:54:41,474 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-09-24 16:54:41,475 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:54:41,477 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:41,482 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:54:41,482 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:54:41,483 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:54:41,483 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-24 16:54:41,483 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:54:41,483 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:54:41,483 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:54:41,484 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 16:54:41,484 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:54:41,486 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-09-24 16:54:41,486 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:54:41,488 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:41,490 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:54:41,491 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:54:41,491 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:54:41,491 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 16:54:41,491 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:54:41,491 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:54:41,492 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:54:41,492 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 16:54:41,492 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:54:41,504 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117
[2020-09-24 16:54:41,506 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:54:41,507 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:41,513 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:54:41,514 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-24 16:54:41,514 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:54:41,514 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-24 16:54:41,514 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:54:41,515 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:54:41,515 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:54:41,515 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-24 16:54:41,515 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:54:41,517 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126
[2020-09-24 16:54:41,518 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:54:41,519 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:41,521 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:54:41,521 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:54:41,521 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:54:41,522 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:54:41,522 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:54:41,522 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:54:41,522 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 16:54:41,522 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:54:41,523 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:54:41,524 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136
[2020-09-24 16:54:41,525 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:54:41,526 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:41,527 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:54:41,528 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:54:41,528 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:54:41,528 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:54:41,528 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:54:41,528 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:54:41,529 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 16:54:41,529 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:54:41,529 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:54:41,561 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 16:54:41,562 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024529717]
[2020-09-24 16:54:41,562 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 16:54:41,562 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-24 16:54:41,563 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585992434]
[2020-09-24 16:54:41,565 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 16:54:41,565 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 16:54:41,565 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 16:54:41,566 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-09-24 16:54:41,566 INFO  L87              Difference]: Start difference. First operand 382 states and 433 transitions. Second operand 5 states.
[2020-09-24 16:54:42,115 WARN  L193               SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 16:54:43,344 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 16:54:43,344 INFO  L93              Difference]: Finished difference Result 704 states and 852 transitions.
[2020-09-24 16:54:43,345 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-09-24 16:54:43,345 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 148
[2020-09-24 16:54:43,346 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 16:54:43,352 INFO  L225             Difference]: With dead ends: 704
[2020-09-24 16:54:43,353 INFO  L226             Difference]: Without dead ends: 432
[2020-09-24 16:54:43,356 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2020-09-24 16:54:43,357 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 432 states.
[2020-09-24 16:54:43,425 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 378.
[2020-09-24 16:54:43,425 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 378 states.
[2020-09-24 16:54:43,428 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 424 transitions.
[2020-09-24 16:54:43,429 INFO  L78                 Accepts]: Start accepts. Automaton has 378 states and 424 transitions. Word has length 148
[2020-09-24 16:54:43,429 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 16:54:43,430 INFO  L479      AbstractCegarLoop]: Abstraction has 378 states and 424 transitions.
[2020-09-24 16:54:43,430 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 16:54:43,430 INFO  L276                IsEmpty]: Start isEmpty. Operand 378 states and 424 transitions.
[2020-09-24 16:54:43,434 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 171
[2020-09-24 16:54:43,434 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:54:43,434 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]
[2020-09-24 16:54:43,434 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 16:54:43,435 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:54:43,435 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:54:43,435 INFO  L82        PathProgramCache]: Analyzing trace with hash 1450357178, now seen corresponding path program 1 times
[2020-09-24 16:54:43,436 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:54:43,436 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512088740]
[2020-09-24 16:54:43,436 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:54:43,486 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:54:43,536 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:44,539 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:44,682 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:45,085 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:54:49,948 FATAL L256   erpolLogProxyWrapper]: Now shrinking...