/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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --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_spec3_product17.cil.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 21:21:14,790 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 21:21:14,794 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 21:21:14,823 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 21:21:14,823 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 21:21:14,824 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 21:21:14,826 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 21:21:14,828 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 21:21:14,830 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 21:21:14,831 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2020-09-24 21:21:14,833 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 21:21:14,833 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 21:21:14,835 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 21:21:14,836 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 21:21:14,837 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 21:21:14,838 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 21:21:14,839 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 21:21:14,841 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 21:21:14,843 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 21:21:14,845 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 21:21:14,847 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 21:21:14,848 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 21:21:14,849 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 21:21:14,854 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 21:21:14,855 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 21:21:14,855 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 21:21:14,856 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 21:21:14,857 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 21:21:14,860 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 21:21:14,860 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 21:21:14,861 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 21:21:14,864 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 21:21:14,866 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 21:21:14,868 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 21:21:14,869 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 21:21:14,870 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
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[2020-09-24 21:21:14,870 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-09-24 21:21:14,874 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 21:21:14,875 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 21:21:14,935 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 21:21:14,936 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 21:21:14,942 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 21:21:14,942 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 21:21:14,942 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 21:21:14,943 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 21:21:14,943 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 21:21:14,943 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 21:21:14,943 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 21:21:14,943 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 21:21:14,944 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 21:21:14,945 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 21:21:14,945 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 21:21:14,945 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 21:21:14,945 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 21:21:14,945 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 21:21:14,946 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 21:21:14,946 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 21:21:14,947 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 21:21:14,947 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 21:21:14,947 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 21:21:14,947 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 21:21:14,947 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 21:21:14,948 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 21:21:14,948 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 21:21:14,948 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 21:21:14,948 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 21:21:14,948 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 21:21:14,949 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 21:21:14,949 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;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;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;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;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;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;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;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;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;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true;
[2020-09-24 21:21:15,406 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 21:21:15,427 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 21:21:15,431 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 21:21:15,433 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 21:21:15,433 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 21:21:15,434 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product17.cil.c
[2020-09-24 21:21:15,546 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30a437ee8/76b47ccaa6494db7b87457f582a40177/FLAG4ea38c7a6
[2020-09-24 21:21:16,150 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 21:21:16,151 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product17.cil.c
[2020-09-24 21:21:16,167 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30a437ee8/76b47ccaa6494db7b87457f582a40177/FLAG4ea38c7a6
[2020-09-24 21:21:16,456 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30a437ee8/76b47ccaa6494db7b87457f582a40177
[2020-09-24 21:21:16,473 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 21:21:16,480 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 21:21:16,481 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 21:21:16,481 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 21:21:16,486 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 21:21:16,487 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:21:16" (1/1) ...
[2020-09-24 21:21:16,491 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75024412 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:16, skipping insertion in model container
[2020-09-24 21:21:16,492 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:21:16" (1/1) ...
[2020-09-24 21:21:16,501 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 21:21:16,581 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 21:21:17,034 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 21:21:17,052 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 21:21:17,207 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 21:21:17,244 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 21:21:17,245 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:17 WrapperNode
[2020-09-24 21:21:17,245 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 21:21:17,246 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 21:21:17,246 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 21:21:17,246 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 21:21:17,266 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:17" (1/1) ...
[2020-09-24 21:21:17,267 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:17" (1/1) ...
[2020-09-24 21:21:17,288 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:17" (1/1) ...
[2020-09-24 21:21:17,289 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:17" (1/1) ...
[2020-09-24 21:21:17,323 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:17" (1/1) ...
[2020-09-24 21:21:17,341 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:17" (1/1) ...
[2020-09-24 21:21:17,346 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:17" (1/1) ...
[2020-09-24 21:21:17,354 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 21:21:17,355 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 21:21:17,355 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 21:21:17,355 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 21:21:17,357 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:17" (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 21:21:17,436 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 21:21:17,437 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 21:21:17,437 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-09-24 21:21:17,437 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-09-24 21:21:17,437 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-09-24 21:21:17,437 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-09-24 21:21:17,438 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-09-24 21:21:17,438 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-09-24 21:21:17,438 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-09-24 21:21:17,438 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-09-24 21:21:17,438 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-09-24 21:21:17,439 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-09-24 21:21:17,439 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-09-24 21:21:17,439 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-09-24 21:21:17,439 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-09-24 21:21:17,439 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry
[2020-09-24 21:21:17,440 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-09-24 21:21:17,440 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-09-24 21:21:17,440 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-09-24 21:21:17,441 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base
[2020-09-24 21:21:17,441 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-09-24 21:21:17,441 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-09-24 21:21:17,441 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-09-24 21:21:17,441 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-09-24 21:21:17,442 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-09-24 21:21:17,442 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-09-24 21:21:17,442 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterLevel
[2020-09-24 21:21:17,442 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-09-24 21:21:17,442 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-09-24 21:21:17,442 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-09-24 21:21:17,443 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-09-24 21:21:17,443 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 21:21:17,443 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-09-24 21:21:17,443 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-09-24 21:21:17,443 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-09-24 21:21:17,444 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-09-24 21:21:17,444 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1
[2020-09-24 21:21:17,444 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 21:21:17,444 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 21:21:17,444 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-09-24 21:21:17,445 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-09-24 21:21:17,445 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-09-24 21:21:17,445 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-09-24 21:21:17,445 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-09-24 21:21:17,445 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-09-24 21:21:17,446 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-09-24 21:21:17,446 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-09-24 21:21:17,446 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-09-24 21:21:17,446 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-09-24 21:21:17,446 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-24 21:21:17,446 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-09-24 21:21:17,447 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-09-24 21:21:17,447 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-09-24 21:21:17,447 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-09-24 21:21:17,447 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-09-24 21:21:17,447 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-24 21:21:17,447 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-09-24 21:21:17,448 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-09-24 21:21:17,448 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-09-24 21:21:17,448 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-09-24 21:21:17,448 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-09-24 21:21:17,448 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-09-24 21:21:17,449 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-09-24 21:21:17,449 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry
[2020-09-24 21:21:17,449 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-09-24 21:21:17,449 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-09-24 21:21:17,449 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-09-24 21:21:17,449 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-09-24 21:21:17,450 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-09-24 21:21:17,450 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-09-24 21:21:17,450 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-09-24 21:21:17,450 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-09-24 21:21:17,450 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1
[2020-09-24 21:21:17,451 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-09-24 21:21:17,451 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base
[2020-09-24 21:21:17,451 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterLevel
[2020-09-24 21:21:17,451 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-09-24 21:21:17,451 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-09-24 21:21:17,451 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-09-24 21:21:17,451 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-09-24 21:21:17,452 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-09-24 21:21:17,452 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-09-24 21:21:17,452 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-09-24 21:21:17,452 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 21:21:17,452 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-09-24 21:21:17,452 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 21:21:17,453 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-09-24 21:21:17,453 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 21:21:18,657 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 21:21:18,658 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-09-24 21:21:18,666 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:21:18 BoogieIcfgContainer
[2020-09-24 21:21:18,666 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 21:21:18,668 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 21:21:18,668 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 21:21:18,672 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 21:21:18,672 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:21:16" (1/3) ...
[2020-09-24 21:21:18,673 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd525cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:21:18, skipping insertion in model container
[2020-09-24 21:21:18,674 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:17" (2/3) ...
[2020-09-24 21:21:18,674 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd525cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:21:18, skipping insertion in model container
[2020-09-24 21:21:18,674 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:21:18" (3/3) ...
[2020-09-24 21:21:18,677 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec3_product17.cil.c
[2020-09-24 21:21:18,690 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 21:21:18,703 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 21:21:18,731 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 21:21:18,780 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 21:21:18,781 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 21:21:18,782 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 21:21:18,782 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 21:21:18,782 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 21:21:18,782 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 21:21:18,782 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 21:21:18,783 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 21:21:18,824 INFO  L276                IsEmpty]: Start isEmpty. Operand 292 states.
[2020-09-24 21:21:18,855 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 154
[2020-09-24 21:21:18,856 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 21:21:18,858 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]
[2020-09-24 21:21:18,859 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 21:21:18,868 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 21:21:18,868 INFO  L82        PathProgramCache]: Analyzing trace with hash 1231247222, now seen corresponding path program 1 times
[2020-09-24 21:21:18,881 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 21:21:18,882 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209302175]
[2020-09-24 21:21:18,882 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 21:21:19,264 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:19,449 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:19,668 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:20,175 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:23,464 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:23,465 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 186
[2020-09-24 21:21:23,469 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-24 21:21:23,469 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4190
[2020-09-24 21:21:23,474 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:23,474 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 16
[2020-09-24 21:21:23,475 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 78
[2020-09-24 21:21:23,475 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 92
[2020-09-24 21:21:23,476 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 5
[2020-09-24 21:21:24,238 WARN  L193               SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-09-24 21:21:24,245 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 21:21:24,295 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:24,343 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:24,593 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:24,593 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 85
[2020-09-24 21:21:24,594 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:24,594 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 296
[2020-09-24 21:21:24,603 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:24,603 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:24,604 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:24,604 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 74
[2020-09-24 21:21:24,604 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:21:24,696 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-09-24 21:21:24,698 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:24,700 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:24,705 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:24,705 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:21:24,705 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:24,706 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-24 21:21:24,706 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:24,706 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:24,707 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:24,707 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 21:21:24,707 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:21:24,710 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-09-24 21:21:24,711 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:24,713 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:24,718 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:24,718 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:21:24,718 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:24,719 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-24 21:21:24,719 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:24,719 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:24,719 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:24,720 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 21:21:24,720 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:24,724 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-09-24 21:21:24,726 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:24,728 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:24,737 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:24,737 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:24,737 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:24,737 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-09-24 21:21:24,738 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:24,738 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:24,738 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:24,738 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 21:21:24,738 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:24,741 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-09-24 21:21:24,742 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:24,744 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:24,752 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:24,753 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:21:24,753 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:24,753 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-09-24 21:21:24,754 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:24,754 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:24,754 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:24,754 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 21:21:24,755 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:21:24,758 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2020-09-24 21:21:24,760 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:24,762 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:24,766 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:24,766 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:24,767 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:24,767 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-24 21:21:24,767 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:24,767 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:24,767 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:24,768 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 21:21:24,768 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:24,770 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131
[2020-09-24 21:21:24,772 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:24,774 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:24,790 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:24,790 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:24,791 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:24,791 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 17
[2020-09-24 21:21:24,791 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:24,793 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 21:21:24,794 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:24,794 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 21:21:24,794 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-09-24 21:21:24,823 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141
[2020-09-24 21:21:24,824 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:24,826 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:24,830 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:24,831 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:24,831 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:24,831 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-24 21:21:24,831 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:24,832 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:21:24,832 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 21:21:24,832 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:21:24,832 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:24,878 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 21:21:24,879 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209302175]
[2020-09-24 21:21:24,882 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 21:21:24,882 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-09-24 21:21:24,883 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706318613]
[2020-09-24 21:21:24,893 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-09-24 21:21:24,893 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 21:21:24,912 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-09-24 21:21:24,913 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2020-09-24 21:21:24,916 INFO  L87              Difference]: Start difference. First operand 292 states. Second operand 8 states.
[2020-09-24 21:21:25,631 WARN  L193               SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 21:21:27,212 WARN  L193               SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 21:21:27,589 WARN  L193               SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-09-24 21:21:28,011 WARN  L193               SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 21:21:28,434 WARN  L193               SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-09-24 21:21:28,757 WARN  L193               SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 21:21:29,396 WARN  L193               SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 21:21:29,714 WARN  L193               SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 21:21:30,773 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 21:21:30,773 INFO  L93              Difference]: Finished difference Result 573 states and 709 transitions.
[2020-09-24 21:21:30,774 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-09-24 21:21:30,776 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 153
[2020-09-24 21:21:30,777 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 21:21:30,797 INFO  L225             Difference]: With dead ends: 573
[2020-09-24 21:21:30,798 INFO  L226             Difference]: Without dead ends: 381
[2020-09-24 21:21:30,804 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240
[2020-09-24 21:21:30,823 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 381 states.
[2020-09-24 21:21:30,925 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 338.
[2020-09-24 21:21:30,926 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 338 states.
[2020-09-24 21:21:30,929 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 372 transitions.
[2020-09-24 21:21:30,931 INFO  L78                 Accepts]: Start accepts. Automaton has 338 states and 372 transitions. Word has length 153
[2020-09-24 21:21:30,932 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 21:21:30,933 INFO  L479      AbstractCegarLoop]: Abstraction has 338 states and 372 transitions.
[2020-09-24 21:21:30,933 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-09-24 21:21:30,933 INFO  L276                IsEmpty]: Start isEmpty. Operand 338 states and 372 transitions.
[2020-09-24 21:21:30,937 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 169
[2020-09-24 21:21:30,937 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 21:21:30,938 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]
[2020-09-24 21:21:30,938 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 21:21:30,938 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 21:21:30,939 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 21:21:30,939 INFO  L82        PathProgramCache]: Analyzing trace with hash 787225270, now seen corresponding path program 1 times
[2020-09-24 21:21:30,939 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 21:21:30,939 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636162187]
[2020-09-24 21:21:30,940 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 21:21:30,996 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:31,054 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:31,389 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:31,390 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 201
[2020-09-24 21:21:31,390 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:31,390 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 390
[2020-09-24 21:21:31,390 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:31,390 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:31,391 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 81
[2020-09-24 21:21:31,391 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 74
[2020-09-24 21:21:31,391 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:31,703 WARN  L193               SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-09-24 21:21:31,704 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 21:21:31,736 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:31,775 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:32,032 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:32,033 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 85
[2020-09-24 21:21:32,033 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:32,033 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 293
[2020-09-24 21:21:32,033 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:32,034 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:32,034 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:32,034 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 77
[2020-09-24 21:21:32,034 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:32,078 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-09-24 21:21:32,079 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:32,081 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:32,085 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:32,085 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:21:32,085 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:32,086 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-24 21:21:32,086 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:32,086 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:32,086 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:32,086 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 21:21:32,087 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:32,088 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-09-24 21:21:32,088 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:32,090 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:32,093 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:32,093 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:21:32,093 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:32,093 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 21:21:32,093 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:32,094 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:32,094 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:32,094 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 21:21:32,094 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:32,096 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-09-24 21:21:32,097 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:32,099 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:32,108 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:32,108 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:32,108 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:32,108 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-09-24 21:21:32,109 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:32,109 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:32,109 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:32,109 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 21:21:32,109 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:32,111 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-09-24 21:21:32,112 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:32,113 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:32,128 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:32,128 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:21:32,128 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:32,128 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 15
[2020-09-24 21:21:32,129 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:32,129 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:32,129 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:32,129 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 21:21:32,129 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:32,141 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116
[2020-09-24 21:21:32,142 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:32,144 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:32,150 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:32,150 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-24 21:21:32,150 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:32,150 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-24 21:21:32,151 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:32,151 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:32,151 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:32,151 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-24 21:21:32,151 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:32,154 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136
[2020-09-24 21:21:32,155 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:32,156 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:32,158 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:32,158 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:32,159 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:32,159 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 21:21:32,159 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:32,159 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:21:32,159 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 21:21:32,160 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:21:32,160 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:32,161 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146
[2020-09-24 21:21:32,162 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:32,163 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:32,165 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:32,165 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:32,165 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:32,166 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 21:21:32,166 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:32,166 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:21:32,166 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 21:21:32,166 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:21:32,167 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:32,168 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156
[2020-09-24 21:21:32,169 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:32,170 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:32,172 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:32,173 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:32,173 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:32,173 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 21:21:32,173 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:32,174 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:21:32,174 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 21:21:32,174 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:21:32,174 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:32,225 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 21:21:32,225 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636162187]
[2020-09-24 21:21:32,226 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 21:21:32,226 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-24 21:21:32,226 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194080761]
[2020-09-24 21:21:32,231 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 21:21:32,231 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 21:21:32,231 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 21:21:32,232 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-09-24 21:21:32,232 INFO  L87              Difference]: Start difference. First operand 338 states and 372 transitions. Second operand 5 states.
[2020-09-24 21:21:32,736 WARN  L193               SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 21:21:33,706 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 21:21:33,706 INFO  L93              Difference]: Finished difference Result 640 states and 756 transitions.
[2020-09-24 21:21:33,707 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-09-24 21:21:33,707 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 168
[2020-09-24 21:21:33,708 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 21:21:33,713 INFO  L225             Difference]: With dead ends: 640
[2020-09-24 21:21:33,713 INFO  L226             Difference]: Without dead ends: 412
[2020-09-24 21:21:33,717 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2020-09-24 21:21:33,718 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 412 states.
[2020-09-24 21:21:33,834 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 343.
[2020-09-24 21:21:33,834 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 343 states.
[2020-09-24 21:21:33,836 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 377 transitions.
[2020-09-24 21:21:33,837 INFO  L78                 Accepts]: Start accepts. Automaton has 343 states and 377 transitions. Word has length 168
[2020-09-24 21:21:33,838 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 21:21:33,838 INFO  L479      AbstractCegarLoop]: Abstraction has 343 states and 377 transitions.
[2020-09-24 21:21:33,838 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 21:21:33,838 INFO  L276                IsEmpty]: Start isEmpty. Operand 343 states and 377 transitions.
[2020-09-24 21:21:33,840 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 177
[2020-09-24 21:21:33,840 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 21:21:33,841 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 21:21:33,841 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 21:21:33,841 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 21:21:33,842 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 21:21:33,842 INFO  L82        PathProgramCache]: Analyzing trace with hash 558510229, now seen corresponding path program 1 times
[2020-09-24 21:21:33,842 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 21:21:33,842 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384937810]
[2020-09-24 21:21:33,843 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 21:21:33,904 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-24 21:21:33,912 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-24 21:21:33,912 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-09-24 21:21:33,918 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-24 21:21:33,945 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:21:33 BoogieIcfgContainer
[2020-09-24 21:21:33,945 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-24 21:21:33,947 INFO  L168              Benchmark]: Toolchain (without parser) took 17472.69 ms. Allocated memory was 140.5 MB in the beginning and 494.4 MB in the end (delta: 353.9 MB). Free memory was 103.1 MB in the beginning and 423.4 MB in the end (delta: -320.4 MB). Peak memory consumption was 33.5 MB. Max. memory is 7.1 GB.
[2020-09-24 21:21:33,948 INFO  L168              Benchmark]: CDTParser took 0.32 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.
[2020-09-24 21:21:33,949 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 764.83 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 102.4 MB in the beginning and 171.6 MB in the end (delta: -69.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB.
[2020-09-24 21:21:33,950 INFO  L168              Benchmark]: Boogie Preprocessor took 108.37 ms. Allocated memory is still 204.5 MB. Free memory was 171.6 MB in the beginning and 165.8 MB in the end (delta: 5.8 MB). Peak memory consumption was 5.8 MB. Max. memory is 7.1 GB.
[2020-09-24 21:21:33,951 INFO  L168              Benchmark]: RCFGBuilder took 1311.41 ms. Allocated memory was 204.5 MB in the beginning and 236.5 MB in the end (delta: 32.0 MB). Free memory was 165.8 MB in the beginning and 175.0 MB in the end (delta: -9.2 MB). Peak memory consumption was 79.6 MB. Max. memory is 7.1 GB.
[2020-09-24 21:21:33,952 INFO  L168              Benchmark]: TraceAbstraction took 15277.50 ms. Allocated memory was 236.5 MB in the beginning and 494.4 MB in the end (delta: 257.9 MB). Free memory was 175.0 MB in the beginning and 423.4 MB in the end (delta: -248.4 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB.
[2020-09-24 21:21:33,956 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.32 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 764.83 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 102.4 MB in the beginning and 171.6 MB in the end (delta: -69.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 108.37 ms. Allocated memory is still 204.5 MB. Free memory was 171.6 MB in the beginning and 165.8 MB in the end (delta: 5.8 MB). Peak memory consumption was 5.8 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 1311.41 ms. Allocated memory was 204.5 MB in the beginning and 236.5 MB in the end (delta: 32.0 MB). Free memory was 165.8 MB in the beginning and 175.0 MB in the end (delta: -9.2 MB). Peak memory consumption was 79.6 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 15277.50 ms. Allocated memory was 236.5 MB in the beginning and 494.4 MB in the end (delta: 257.9 MB). Free memory was 175.0 MB in the beginning and 423.4 MB in the end (delta: -248.4 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 506]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L209]              static struct __ACC__ERR *head  =    (struct __ACC__ERR *)0;
[L413]              int waterLevel  =    1;
[L414]              int methaneLevelCritical  =    0;
[L582]              int pumpRunning  =    0;
[L583]              int systemActive  =    1;
[L735]              int cleanupTimeShifts  =    4;
[L811]              int retValue_acc ;
[L812]              int tmp ;
[L816]  FCALL       select_helpers()
[L817]  FCALL       select_features()
[L818]  CALL, EXPR  valid_product()
[L860]              int retValue_acc ;
[L863]              retValue_acc = 1
[L864]              return (retValue_acc);
[L818]  RET, EXPR   valid_product()
[L818]              tmp = valid_product()
[L820]  COND TRUE   \read(tmp)
[L822]  FCALL       setup()
[L823]  CALL        runTest()
[L802]  CALL        test()
[L514]              int splverifierCounter ;
[L515]              int tmp ;
[L516]              int tmp___0 ;
[L517]              int tmp___1 ;
[L518]              int tmp___2 ;
[L521]              splverifierCounter = 0
[L523]  COND TRUE   1
[L525]  COND TRUE   splverifierCounter < 4
[L531]              tmp = __VERIFIER_nondet_int()
[L533]  COND TRUE   \read(tmp)
[L535]  CALL        waterRise()
[L431]  COND TRUE   waterLevel < 2
[L432]              waterLevel = waterLevel + 1
[L535]  RET         waterRise()
[L541]              tmp___0 = __VERIFIER_nondet_int()
[L543]  COND FALSE  !(\read(tmp___0))
[L551]              tmp___2 = __VERIFIER_nondet_int()
[L553]  COND TRUE   \read(tmp___2)
[L566]  CALL        timeShift()
[L590]  COND FALSE  !(\read(pumpRunning))
[L597]  COND TRUE   \read(systemActive)
[L599]  CALL        processEnvironment()
[L619]              int tmp ;
[L622]  COND FALSE  !(\read(pumpRunning))
[L637]  FCALL       processEnvironment__wrappee__base()
[L599]  RET         processEnvironment()
[L605]  CALL        __utac_acc__Specification3_spec__1()
[L870]              int tmp ;
[L871]              int tmp___0 ;
[L872]              int tmp___1 ;
[L876]  CALL, EXPR  isMethaneLevelCritical()
[L452]              int retValue_acc ;
[L455]              retValue_acc = methaneLevelCritical
[L456]              return (retValue_acc);
[L876]  RET, EXPR   isMethaneLevelCritical()
[L876]              tmp = isMethaneLevelCritical()
[L878]  COND FALSE  !(\read(tmp))
[L882]  CALL, EXPR  getWaterLevel()
[L484]              int retValue_acc ;
[L487]              retValue_acc = waterLevel
[L488]              return (retValue_acc);
[L882]  RET, EXPR   getWaterLevel()
[L882]              tmp___0 = getWaterLevel()
[L884]  COND TRUE   tmp___0 == 2
[L886]  CALL, EXPR  isPumpRunning()
[L671]              int retValue_acc ;
[L674]              retValue_acc = pumpRunning
[L675]              return (retValue_acc);
[L886]  RET, EXPR   isPumpRunning()
[L886]              tmp___1 = isPumpRunning()
[L888]  COND FALSE  !(\read(tmp___1))
[L892]  CALL        __automaton_fail()
[L506]              __VERIFIER_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 37 procedures, 609 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.1s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 7.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 457 SDtfs, 726 SDslu, 665 SDs, 0 SdLazy, 1389 SolverSat, 220 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=343occurred 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, 112 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.7s InterpolantComputationTime, 497 NumberOfCodeBlocks, 497 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 319 ConstructedInterpolants, 0 QuantifiedInterpolants, 137960 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...