/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 SequenceOfStatements --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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product56.cil.c


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


This is Ultimate 0.1.25-adbd35c
[2020-10-12 17:58:59,736 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-12 17:58:59,738 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-12 17:58:59,780 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-12 17:58:59,780 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-12 17:58:59,791 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-12 17:58:59,793 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-12 17:58:59,797 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-12 17:58:59,800 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-12 17:58:59,803 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-12 17:58:59,804 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-12 17:58:59,805 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-12 17:58:59,805 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-12 17:58:59,808 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-12 17:58:59,811 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-12 17:58:59,812 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-12 17:58:59,814 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-12 17:58:59,815 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-12 17:58:59,816 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-12 17:58:59,825 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-12 17:58:59,826 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-12 17:58:59,829 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-12 17:58:59,830 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-12 17:58:59,831 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-12 17:58:59,833 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-12 17:58:59,833 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-12 17:58:59,833 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-12 17:58:59,834 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-12 17:58:59,834 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-12 17:58:59,835 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-12 17:58:59,835 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-12 17:58:59,836 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-12 17:58:59,837 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-12 17:58:59,837 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-12 17:58:59,838 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-12 17:58:59,838 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-12 17:58:59,839 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-12 17:58:59,839 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-12 17:58:59,839 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-12 17:58:59,840 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-12 17:58:59,841 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-12 17:58:59,842 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
[2020-10-12 17:58:59,862 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-12 17:58:59,863 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-12 17:58:59,864 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-12 17:58:59,864 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-12 17:58:59,864 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-12 17:58:59,864 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-12 17:58:59,865 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-12 17:58:59,865 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-12 17:58:59,865 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-12 17:58:59,865 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-12 17:58:59,865 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-12 17:58:59,866 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-12 17:58:59,866 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-12 17:58:59,866 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-12 17:58:59,866 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-12 17:58:59,866 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-12 17:58:59,867 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-12 17:58:59,867 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-12 17:58:59,867 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-12 17:58:59,867 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-12 17:58:59,867 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-12 17:58:59,868 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-12 17:58:59,868 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-12 17:58:59,868 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-12 17:58:59,868 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-12 17:58:59,868 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-12 17:58:59,869 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-12 17:58:59,869 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-12 17:58:59,869 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-12 17:58:59,869 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 -> SequenceOfStatements
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;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true;
[2020-10-12 17:59:00,171 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-12 17:59:00,191 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-12 17:59:00,197 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-12 17:59:00,199 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-12 17:59:00,200 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-12 17:59:00,201 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product56.cil.c
[2020-10-12 17:59:00,276 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8d860b85/a4ef18f970864caaaaa2ec990e3f7862/FLAG369234d0c
[2020-10-12 17:59:00,805 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-12 17:59:00,806 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product56.cil.c
[2020-10-12 17:59:00,821 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8d860b85/a4ef18f970864caaaaa2ec990e3f7862/FLAG369234d0c
[2020-10-12 17:59:01,117 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8d860b85/a4ef18f970864caaaaa2ec990e3f7862
[2020-10-12 17:59:01,126 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-12 17:59:01,127 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-12 17:59:01,128 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-12 17:59:01,128 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-12 17:59:01,132 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-12 17:59:01,133 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 05:59:01" (1/1) ...
[2020-10-12 17:59:01,136 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2876d654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:59:01, skipping insertion in model container
[2020-10-12 17:59:01,137 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 05:59:01" (1/1) ...
[2020-10-12 17:59:01,145 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-12 17:59:01,190 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-12 17:59:01,592 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-12 17:59:01,716 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-12 17:59:01,851 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-12 17:59:01,891 INFO  L208         MainTranslator]: Completed translation
[2020-10-12 17:59:01,892 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:59:01 WrapperNode
[2020-10-12 17:59:01,892 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-12 17:59:01,893 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-12 17:59:01,893 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-12 17:59:01,893 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-12 17:59:01,906 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:59:01" (1/1) ...
[2020-10-12 17:59:01,906 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:59:01" (1/1) ...
[2020-10-12 17:59:01,926 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:59:01" (1/1) ...
[2020-10-12 17:59:01,927 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:59:01" (1/1) ...
[2020-10-12 17:59:01,957 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:59:01" (1/1) ...
[2020-10-12 17:59:01,967 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:59:01" (1/1) ...
[2020-10-12 17:59:01,973 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:59:01" (1/1) ...
[2020-10-12 17:59:01,984 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-12 17:59:01,985 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-12 17:59:01,985 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-12 17:59:01,985 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-12 17:59:01,986 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:59:01" (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
[2020-10-12 17:59:02,056 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-12 17:59:02,057 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-12 17:59:02,057 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-10-12 17:59:02,057 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-10-12 17:59:02,057 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-10-12 17:59:02,057 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-10-12 17:59:02,058 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-10-12 17:59:02,058 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-12 17:59:02,059 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-10-12 17:59:02,059 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-10-12 17:59:02,059 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-10-12 17:59:02,059 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-10-12 17:59:02,059 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-10-12 17:59:02,059 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-10-12 17:59:02,060 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-10-12 17:59:02,060 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-10-12 17:59:02,061 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-10-12 17:59:02,061 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-10-12 17:59:02,061 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1
[2020-10-12 17:59:02,061 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-10-12 17:59:02,061 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-10-12 17:59:02,061 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-10-12 17:59:02,062 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-10-12 17:59:02,063 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-10-12 17:59:02,063 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-10-12 17:59:02,063 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry
[2020-10-12 17:59:02,064 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry
[2020-10-12 17:59:02,064 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-10-12 17:59:02,064 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base
[2020-10-12 17:59:02,064 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor
[2020-10-12 17:59:02,064 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor
[2020-10-12 17:59:02,064 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-10-12 17:59:02,065 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-10-12 17:59:02,065 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-10-12 17:59:02,065 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-10-12 17:59:02,065 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-10-12 17:59:02,065 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-10-12 17:59:02,065 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterLevel
[2020-10-12 17:59:02,065 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterLevel
[2020-10-12 17:59:02,066 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopSystem
[2020-10-12 17:59:02,066 INFO  L138     BoogieDeclarations]: Found implementation of procedure startSystem
[2020-10-12 17:59:02,066 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-10-12 17:59:02,066 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-10-12 17:59:02,066 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-10-12 17:59:02,066 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-12 17:59:02,066 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-10-12 17:59:02,067 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-10-12 17:59:02,067 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-10-12 17:59:02,067 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-10-12 17:59:02,067 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-10-12 17:59:02,068 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-10-12 17:59:02,068 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-10-12 17:59:02,068 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-10-12 17:59:02,068 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-10-12 17:59:02,068 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-10-12 17:59:02,069 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-10-12 17:59:02,069 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-10-12 17:59:02,069 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-10-12 17:59:02,069 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-12 17:59:02,069 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-12 17:59:02,069 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-10-12 17:59:02,069 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-10-12 17:59:02,070 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-10-12 17:59:02,070 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-10-12 17:59:02,070 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-10-12 17:59:02,070 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-10-12 17:59:02,070 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-10-12 17:59:02,071 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-10-12 17:59:02,071 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-12 17:59:02,071 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-10-12 17:59:02,072 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-10-12 17:59:02,072 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-10-12 17:59:02,073 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-10-12 17:59:02,073 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-10-12 17:59:02,074 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-12 17:59:02,074 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-10-12 17:59:02,074 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-10-12 17:59:02,074 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-10-12 17:59:02,074 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-10-12 17:59:02,074 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-10-12 17:59:02,074 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-10-12 17:59:02,075 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1
[2020-10-12 17:59:02,076 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-10-12 17:59:02,076 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-10-12 17:59:02,076 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry
[2020-10-12 17:59:02,076 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry
[2020-10-12 17:59:02,076 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-10-12 17:59:02,076 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-10-12 17:59:02,076 INFO  L130     BoogieDeclarations]: Found specification of procedure stopSystem
[2020-10-12 17:59:02,077 INFO  L130     BoogieDeclarations]: Found specification of procedure startSystem
[2020-10-12 17:59:02,077 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-10-12 17:59:02,077 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base
[2020-10-12 17:59:02,077 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterLevel
[2020-10-12 17:59:02,077 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor
[2020-10-12 17:59:02,077 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterLevel
[2020-10-12 17:59:02,077 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor
[2020-10-12 17:59:02,078 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-10-12 17:59:02,078 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-12 17:59:02,078 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-12 17:59:02,078 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-12 17:59:03,194 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-12 17:59:03,195 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-10-12 17:59:03,201 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:59:03 BoogieIcfgContainer
[2020-10-12 17:59:03,201 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-12 17:59:03,202 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-12 17:59:03,203 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-12 17:59:03,206 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-12 17:59:03,206 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 05:59:01" (1/3) ...
[2020-10-12 17:59:03,207 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d3d5e64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 05:59:03, skipping insertion in model container
[2020-10-12 17:59:03,207 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:59:01" (2/3) ...
[2020-10-12 17:59:03,208 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d3d5e64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 05:59:03, skipping insertion in model container
[2020-10-12 17:59:03,208 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:59:03" (3/3) ...
[2020-10-12 17:59:03,210 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec3_product56.cil.c
[2020-10-12 17:59:03,221 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-12 17:59:03,229 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-12 17:59:03,245 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-12 17:59:03,271 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-10-12 17:59:03,271 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-10-12 17:59:03,272 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-12 17:59:03,272 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-12 17:59:03,272 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-12 17:59:03,273 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-10-12 17:59:03,273 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-12 17:59:03,273 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-12 17:59:03,297 INFO  L276                IsEmpty]: Start isEmpty. Operand 202 states.
[2020-10-12 17:59:03,309 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2020-10-12 17:59:03,310 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-12 17:59:03,311 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]
[2020-10-12 17:59:03,311 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-12 17:59:03,316 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-12 17:59:03,316 INFO  L82        PathProgramCache]: Analyzing trace with hash 1135361186, now seen corresponding path program 1 times
[2020-10-12 17:59:03,326 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-12 17:59:03,326 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715807921]
[2020-10-12 17:59:03,327 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-12 17:59:03,590 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:59:03,743 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:03,837 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:04,926 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:06,250 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:59:06,251 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 84
[2020-10-12 17:59:06,251 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-12 17:59:06,252 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2654
[2020-10-12 17:59:06,254 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:59:06,260 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 15
[2020-10-12 17:59:06,261 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-12 17:59:06,263 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 67
[2020-10-12 17:59:06,263 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 11
[2020-10-12 17:59:06,904 WARN  L193               SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-10-12 17:59:06,908 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-12 17:59:06,954 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:59:06,978 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:07,146 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:59:07,147 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:59:07,148 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:59:07,148 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 189
[2020-10-12 17:59:07,148 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:59:07,149 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:59:07,149 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:59:07,149 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-12 17:59:07,150 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-12 17:59:07,206 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-10-12 17:59:07,207 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:59:07,210 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:07,213 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:59:07,213 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 7
[2020-10-12 17:59:07,214 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:59:07,214 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-10-12 17:59:07,215 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:59:07,215 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:59:07,215 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:59:07,216 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-12 17:59:07,216 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-12 17:59:07,219 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-10-12 17:59:07,221 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:59:07,222 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:07,226 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:59:07,226 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 7
[2020-10-12 17:59:07,227 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:59:07,227 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-10-12 17:59:07,228 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:59:07,228 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:59:07,228 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:59:07,229 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-12 17:59:07,229 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-12 17:59:07,232 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-10-12 17:59:07,234 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:59:07,236 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:07,240 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:59:07,240 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:59:07,241 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:59:07,241 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-10-12 17:59:07,242 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:59:07,242 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:59:07,242 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:59:07,243 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-10-12 17:59:07,243 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-12 17:59:07,246 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-10-12 17:59:07,248 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:59:07,250 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:07,252 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:59:07,253 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 7
[2020-10-12 17:59:07,253 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:59:07,254 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-12 17:59:07,254 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:59:07,254 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:59:07,255 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:59:07,255 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-12 17:59:07,256 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-12 17:59:07,261 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32
[2020-10-12 17:59:07,263 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:59:07,264 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:07,274 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:59:07,275 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:59:07,275 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:59:07,275 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-10-12 17:59:07,276 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:59:07,276 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:59:07,277 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:59:07,277 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-10-12 17:59:07,277 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-12 17:59:07,287 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2020-10-12 17:59:07,290 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:59:07,292 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:07,300 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:59:07,301 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:59:07,301 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:59:07,302 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-10-12 17:59:07,302 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:59:07,302 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-12 17:59:07,303 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:59:07,303 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-10-12 17:59:07,303 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-12 17:59:07,327 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44
[2020-10-12 17:59:07,328 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:59:07,330 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:07,332 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:59:07,333 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:59:07,333 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:59:07,334 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-12 17:59:07,334 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:59:07,334 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-12 17:59:07,335 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-12 17:59:07,335 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-12 17:59:07,335 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-12 17:59:07,363 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-12 17:59:07,364 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715807921]
[2020-10-12 17:59:07,367 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-12 17:59:07,367 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-10-12 17:59:07,368 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333800252]
[2020-10-12 17:59:07,376 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-12 17:59:07,377 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-12 17:59:07,392 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-12 17:59:07,394 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2020-10-12 17:59:07,397 INFO  L87              Difference]: Start difference. First operand 202 states. Second operand 8 states.
[2020-10-12 17:59:08,305 WARN  L193               SmtUtils]: Spent 496.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-10-12 17:59:09,727 WARN  L193               SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-10-12 17:59:10,099 WARN  L193               SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-10-12 17:59:10,417 WARN  L193               SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-10-12 17:59:11,036 WARN  L193               SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-10-12 17:59:11,536 WARN  L193               SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-10-12 17:59:13,156 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-12 17:59:13,156 INFO  L93              Difference]: Finished difference Result 523 states and 724 transitions.
[2020-10-12 17:59:13,157 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-10-12 17:59:13,158 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 52
[2020-10-12 17:59:13,159 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-12 17:59:13,177 INFO  L225             Difference]: With dead ends: 523
[2020-10-12 17:59:13,177 INFO  L226             Difference]: Without dead ends: 326
[2020-10-12 17:59:13,184 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182
[2020-10-12 17:59:13,204 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 326 states.
[2020-10-12 17:59:13,325 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 278.
[2020-10-12 17:59:13,326 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 278 states.
[2020-10-12 17:59:13,329 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 342 transitions.
[2020-10-12 17:59:13,332 INFO  L78                 Accepts]: Start accepts. Automaton has 278 states and 342 transitions. Word has length 52
[2020-10-12 17:59:13,332 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-12 17:59:13,332 INFO  L479      AbstractCegarLoop]: Abstraction has 278 states and 342 transitions.
[2020-10-12 17:59:13,332 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-12 17:59:13,333 INFO  L276                IsEmpty]: Start isEmpty. Operand 278 states and 342 transitions.
[2020-10-12 17:59:13,339 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 63
[2020-10-12 17:59:13,339 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-12 17:59:13,339 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]
[2020-10-12 17:59:13,340 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-12 17:59:13,340 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-12 17:59:13,340 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-12 17:59:13,340 INFO  L82        PathProgramCache]: Analyzing trace with hash -1497210901, now seen corresponding path program 1 times
[2020-10-12 17:59:13,341 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-12 17:59:13,341 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333386120]
[2020-10-12 17:59:13,341 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-12 17:59:13,390 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:59:13,436 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:14,196 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:59:14,197 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 94
[2020-10-12 17:59:14,197 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:59:14,197 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 804
[2020-10-12 17:59:14,197 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:59:14,198 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-10-12 17:59:14,198 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-12 17:59:14,198 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 57
[2020-10-12 17:59:14,198 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-12 17:59:14,442 WARN  L193               SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-10-12 17:59:14,443 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-12 17:59:14,460 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:59:14,471 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:14,530 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:59:14,530 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:59:14,531 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:59:14,531 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 69
[2020-10-12 17:59:14,531 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:59:14,531 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:59:14,531 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:59:14,532 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-12 17:59:14,532 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:59:14,549 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-10-12 17:59:14,550 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:59:14,551 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:14,553 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:59:14,553 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 7
[2020-10-12 17:59:14,553 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:59:14,553 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-12 17:59:14,554 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:59:14,554 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:59:14,554 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:59:14,554 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-12 17:59:14,554 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:59:14,556 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-10-12 17:59:14,557 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:59:14,557 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:14,559 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:59:14,559 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 7
[2020-10-12 17:59:14,559 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:59:14,559 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-10-12 17:59:14,560 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:59:14,560 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:59:14,560 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:59:14,560 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-12 17:59:14,560 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:59:14,561 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-10-12 17:59:14,562 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:59:14,563 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:14,565 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:59:14,565 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:59:14,566 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:59:14,566 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-12 17:59:14,566 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:59:14,566 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:59:14,566 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:59:14,567 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-10-12 17:59:14,567 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:59:14,568 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-10-12 17:59:14,569 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:59:14,569 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:14,571 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:59:14,571 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 7
[2020-10-12 17:59:14,571 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:59:14,571 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-10-12 17:59:14,572 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:59:14,572 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:59:14,572 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:59:14,572 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-12 17:59:14,572 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:59:14,579 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28
[2020-10-12 17:59:14,580 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:59:14,582 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:14,584 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:59:14,584 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:59:14,584 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:59:14,585 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-12 17:59:14,585 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:59:14,585 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 17:59:14,585 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 17:59:14,585 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-10-12 17:59:14,586 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:59:14,587 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42
[2020-10-12 17:59:14,588 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:59:14,589 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:14,590 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:59:14,590 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:59:14,590 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:59:14,591 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-10-12 17:59:14,591 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:59:14,591 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-12 17:59:14,591 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-12 17:59:14,591 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-12 17:59:14,592 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:59:14,593 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48
[2020-10-12 17:59:14,593 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:59:14,594 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:14,595 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:59:14,595 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:59:14,596 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:59:14,596 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-10-12 17:59:14,596 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:59:14,596 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-12 17:59:14,596 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-12 17:59:14,597 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-12 17:59:14,597 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:59:14,598 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54
[2020-10-12 17:59:14,599 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 17:59:14,599 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 17:59:14,600 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 17:59:14,601 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 17:59:14,601 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 17:59:14,601 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-10-12 17:59:14,601 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 17:59:14,601 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-12 17:59:14,602 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-12 17:59:14,602 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-12 17:59:14,602 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 17:59:14,611 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-12 17:59:14,612 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1333386120]
[2020-10-12 17:59:14,612 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-12 17:59:14,612 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-10-12 17:59:14,613 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040229703]
[2020-10-12 17:59:14,614 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-12 17:59:14,615 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-12 17:59:14,615 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-12 17:59:14,615 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-12 17:59:14,615 INFO  L87              Difference]: Start difference. First operand 278 states and 342 transitions. Second operand 5 states.
[2020-10-12 17:59:14,978 WARN  L193               SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-10-12 17:59:17,473 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-12 17:59:17,473 INFO  L93              Difference]: Finished difference Result 908 states and 1210 transitions.
[2020-10-12 17:59:17,474 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-10-12 17:59:17,474 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 62
[2020-10-12 17:59:17,475 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-12 17:59:17,484 INFO  L225             Difference]: With dead ends: 908
[2020-10-12 17:59:17,484 INFO  L226             Difference]: Without dead ends: 654
[2020-10-12 17:59:17,487 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2020-10-12 17:59:17,489 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 654 states.
[2020-10-12 17:59:17,618 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 515.
[2020-10-12 17:59:17,619 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 515 states.
[2020-10-12 17:59:17,623 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 644 transitions.
[2020-10-12 17:59:17,623 INFO  L78                 Accepts]: Start accepts. Automaton has 515 states and 644 transitions. Word has length 62
[2020-10-12 17:59:17,624 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-12 17:59:17,624 INFO  L479      AbstractCegarLoop]: Abstraction has 515 states and 644 transitions.
[2020-10-12 17:59:17,624 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-12 17:59:17,624 INFO  L276                IsEmpty]: Start isEmpty. Operand 515 states and 644 transitions.
[2020-10-12 17:59:17,629 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2020-10-12 17:59:17,630 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-12 17:59:17,630 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]
[2020-10-12 17:59:17,630 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-12 17:59:17,630 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-12 17:59:17,630 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-12 17:59:17,631 INFO  L82        PathProgramCache]: Analyzing trace with hash 1151554506, now seen corresponding path program 1 times
[2020-10-12 17:59:17,631 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-12 17:59:17,631 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465702022]
[2020-10-12 17:59:17,631 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-12 17:59:17,670 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-10-12 17:59:17,673 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-10-12 17:59:17,674 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-10-12 17:59:17,678 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-12 17:59:17,700 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 05:59:17 BoogieIcfgContainer
[2020-10-12 17:59:17,701 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-10-12 17:59:17,703 INFO  L168              Benchmark]: Toolchain (without parser) took 16575.53 ms. Allocated memory was 140.5 MB in the beginning and 488.1 MB in the end (delta: 347.6 MB). Free memory was 102.6 MB in the beginning and 213.6 MB in the end (delta: -111.0 MB). Peak memory consumption was 236.6 MB. Max. memory is 7.1 GB.
[2020-10-12 17:59:17,704 INFO  L168              Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-10-12 17:59:17,705 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 764.02 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.4 MB in the beginning and 172.2 MB in the end (delta: -69.8 MB). Peak memory consumption was 30.0 MB. Max. memory is 7.1 GB.
[2020-10-12 17:59:17,706 INFO  L168              Benchmark]: Boogie Preprocessor took 91.67 ms. Allocated memory is still 203.9 MB. Free memory was 172.2 MB in the beginning and 168.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB.
[2020-10-12 17:59:17,707 INFO  L168              Benchmark]: RCFGBuilder took 1216.44 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 168.2 MB in the beginning and 193.4 MB in the end (delta: -25.2 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB.
[2020-10-12 17:59:17,708 INFO  L168              Benchmark]: TraceAbstraction took 14498.43 ms. Allocated memory was 237.0 MB in the beginning and 488.1 MB in the end (delta: 251.1 MB). Free memory was 191.9 MB in the beginning and 213.6 MB in the end (delta: -21.7 MB). Peak memory consumption was 229.5 MB. Max. memory is 7.1 GB.
[2020-10-12 17:59:17,712 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 764.02 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.4 MB in the beginning and 172.2 MB in the end (delta: -69.8 MB). Peak memory consumption was 30.0 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 91.67 ms. Allocated memory is still 203.9 MB. Free memory was 172.2 MB in the beginning and 168.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 1216.44 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 168.2 MB in the beginning and 193.4 MB in the end (delta: -25.2 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 14498.43 ms. Allocated memory was 237.0 MB in the beginning and 488.1 MB in the end (delta: 251.1 MB). Free memory was 191.9 MB in the beginning and 213.6 MB in the end (delta: -21.7 MB). Peak memory consumption was 229.5 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 1013]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L40]                int cleanupTimeShifts  =    4;
[L313]               static struct __ACC__ERR *head  =    (struct __ACC__ERR *)0;
[L587]               int waterLevel  =    1;
[L588]               int methaneLevelCritical  =    0;
[L694]               int pumpRunning  =    0;
[L695]               int systemActive  =    1;
[L121]               int retValue_acc ;
[L122]               int tmp ;
[L126]   FCALL       select_helpers()
[L127]   FCALL       select_features()
[L128]   CALL, EXPR  valid_product()
[L536]               int retValue_acc ;
[L539]               retValue_acc = 1
[L540]               return (retValue_acc);
[L128]   RET, EXPR   valid_product()
[L128]               tmp = valid_product()
[L130]   COND TRUE   \read(tmp)
[L132]   FCALL       setup()
[L133]   CALL        runTest()
[L112]   CALL        test()
[L941]               int splverifierCounter ;
[L942]               int tmp ;
[L943]               int tmp___0 ;
[L944]               int tmp___1 ;
[L945]               int tmp___2 ;
[L948]               splverifierCounter = 0
[L950]   COND TRUE   1
[L952]   COND TRUE   splverifierCounter < 4
[L958]               tmp = __VERIFIER_nondet_int()
[L960]   COND TRUE   \read(tmp)
[L962]   CALL        waterRise()
[L605]   COND TRUE   waterLevel < 2
[L606]               waterLevel = waterLevel + 1
[L962]   RET         waterRise()
[L968]               tmp___0 = __VERIFIER_nondet_int()
[L970]   COND FALSE  !(\read(tmp___0))
[L978]               tmp___2 = __VERIFIER_nondet_int()
[L980]   COND FALSE  !(\read(tmp___2))
[L986]               tmp___1 = __VERIFIER_nondet_int()
[L988]   COND TRUE   \read(tmp___1)
[L990]   CALL        stopSystem()
[L920]   COND FALSE  !(\read(pumpRunning))
[L927]               systemActive = 0
[L990]   RET         stopSystem()
[L997]   CALL        timeShift()
[L701]   COND FALSE  !(\read(pumpRunning))
[L708]   COND FALSE  !(\read(systemActive))
[L716]   CALL        __utac_acc__Specification3_spec__1()
[L550]               int tmp ;
[L551]               int tmp___0 ;
[L552]               int tmp___1 ;
[L556]   CALL, EXPR  isMethaneLevelCritical()
[L626]               int retValue_acc ;
[L629]               retValue_acc = methaneLevelCritical
[L630]               return (retValue_acc);
[L556]   RET, EXPR   isMethaneLevelCritical()
[L556]               tmp = isMethaneLevelCritical()
[L558]   COND FALSE  !(\read(tmp))
[L562]   CALL, EXPR  getWaterLevel()
[L658]               int retValue_acc ;
[L661]               retValue_acc = waterLevel
[L662]               return (retValue_acc);
[L562]   RET, EXPR   getWaterLevel()
[L562]               tmp___0 = getWaterLevel()
[L564]   COND TRUE   tmp___0 == 2
[L566]   CALL, EXPR  isPumpRunning()
[L834]               int retValue_acc ;
[L837]               retValue_acc = pumpRunning
[L838]               return (retValue_acc);
[L566]   RET, EXPR   isPumpRunning()
[L566]               tmp___1 = isPumpRunning()
[L568]   COND FALSE  !(\read(tmp___1))
[L572]   CALL        __automaton_fail()
[L1013]              __VERIFIER_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 43 procedures, 258 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 8.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 351 SDtfs, 823 SDslu, 291 SDs, 0 SdLazy, 1432 SolverSat, 547 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=515occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 2 MinimizatonAttempts, 187 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 181 NumberOfCodeBlocks, 181 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 34651 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...