/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_product28.cil.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 21:21:36,755 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 21:21:36,760 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 21:21:36,806 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 21:21:36,807 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 21:21:36,814 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 21:21:36,817 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 21:21:36,820 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 21:21:36,823 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 21:21:36,826 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2020-09-24 21:21:36,829 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 21:21:36,829 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 21:21:36,832 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 21:21:36,834 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 21:21:36,836 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 21:21:36,837 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 21:21:36,838 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 21:21:36,840 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 21:21:36,849 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 21:21:36,851 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 21:21:36,852 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 21:21:36,853 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 21:21:36,854 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 21:21:36,867 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 21:21:36,872 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 21:21:36,872 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 21:21:36,873 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 21:21:36,874 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 21:21:36,880 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 21:21:36,880 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 21:21:36,881 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 21:21:36,882 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 21:21:36,883 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 21:21:36,884 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 21:21:36,884 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 21:21:36,885 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 21:21:36,885 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 21:21:36,886 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-09-24 21:21:36,887 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 21:21:36,889 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 21:21:36,930 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 21:21:36,930 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 21:21:36,932 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 21:21:36,933 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 21:21:36,933 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 21:21:36,933 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 21:21:36,934 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 21:21:36,934 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 21:21:36,934 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 21:21:36,934 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 21:21:36,935 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 21:21:36,935 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 21:21:36,936 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 21:21:36,936 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 21:21:36,937 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 21:21:36,937 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 21:21:36,937 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 21:21:36,937 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 21:21:36,937 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 21:21:36,938 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 21:21:36,938 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 21:21:36,938 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 21:21:36,938 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 21:21:36,939 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 21:21:36,939 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 21:21:36,939 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 21:21:36,939 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 21:21:36,939 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 21:21:36,940 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 21:21:36,940 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 21:21:37,383 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 21:21:37,401 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 21:21:37,406 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 21:21:37,407 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 21:21:37,408 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 21:21:37,409 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product28.cil.c
[2020-09-24 21:21:37,493 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/988634ffc/2772f3cdcbed4afdb4bc3e8babc49e12/FLAG96c13e798
[2020-09-24 21:21:38,122 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 21:21:38,123 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product28.cil.c
[2020-09-24 21:21:38,137 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/988634ffc/2772f3cdcbed4afdb4bc3e8babc49e12/FLAG96c13e798
[2020-09-24 21:21:38,329 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/988634ffc/2772f3cdcbed4afdb4bc3e8babc49e12
[2020-09-24 21:21:38,343 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 21:21:38,349 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 21:21:38,351 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 21:21:38,351 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 21:21:38,355 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 21:21:38,356 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:21:38" (1/1) ...
[2020-09-24 21:21:38,361 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11cafb76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:38, skipping insertion in model container
[2020-09-24 21:21:38,361 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:21:38" (1/1) ...
[2020-09-24 21:21:38,370 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 21:21:38,419 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 21:21:38,854 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 21:21:38,970 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 21:21:39,100 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 21:21:39,152 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 21:21:39,153 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:39 WrapperNode
[2020-09-24 21:21:39,153 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 21:21:39,154 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 21:21:39,154 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 21:21:39,154 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 21:21:39,169 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:39" (1/1) ...
[2020-09-24 21:21:39,169 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:39" (1/1) ...
[2020-09-24 21:21:39,193 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:39" (1/1) ...
[2020-09-24 21:21:39,201 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:39" (1/1) ...
[2020-09-24 21:21:39,247 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:39" (1/1) ...
[2020-09-24 21:21:39,257 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:39" (1/1) ...
[2020-09-24 21:21:39,262 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:39" (1/1) ...
[2020-09-24 21:21:39,270 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 21:21:39,270 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 21:21:39,270 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 21:21:39,271 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 21:21:39,272 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:39" (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 21:21:39,367 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 21:21:39,368 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 21:21:39,368 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-09-24 21:21:39,368 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-09-24 21:21:39,368 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-09-24 21:21:39,369 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-09-24 21:21:39,369 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-09-24 21:21:39,369 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-09-24 21:21:39,370 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base
[2020-09-24 21:21:39,370 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-09-24 21:21:39,371 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor
[2020-09-24 21:21:39,371 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-09-24 21:21:39,371 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-09-24 21:21:39,371 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-09-24 21:21:39,371 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-09-24 21:21:39,372 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-09-24 21:21:39,373 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterLevel
[2020-09-24 21:21:39,373 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopSystem
[2020-09-24 21:21:39,373 INFO  L138     BoogieDeclarations]: Found implementation of procedure startSystem
[2020-09-24 21:21:39,373 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-09-24 21:21:39,374 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-09-24 21:21:39,374 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-09-24 21:21:39,375 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-09-24 21:21:39,375 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-09-24 21:21:39,375 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-09-24 21:21:39,376 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-09-24 21:21:39,376 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry
[2020-09-24 21:21:39,376 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-09-24 21:21:39,377 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-09-24 21:21:39,377 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-09-24 21:21:39,377 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-09-24 21:21:39,377 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 21:21:39,377 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-09-24 21:21:39,377 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1
[2020-09-24 21:21:39,378 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-09-24 21:21:39,378 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-09-24 21:21:39,378 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-09-24 21:21:39,378 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-09-24 21:21:39,378 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-09-24 21:21:39,378 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-09-24 21:21:39,379 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 21:21:39,379 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 21:21:39,379 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-09-24 21:21:39,379 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-09-24 21:21:39,379 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-09-24 21:21:39,379 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-09-24 21:21:39,380 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-09-24 21:21:39,380 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-09-24 21:21:39,380 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-09-24 21:21:39,380 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-09-24 21:21:39,381 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry
[2020-09-24 21:21:39,381 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-09-24 21:21:39,381 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-09-24 21:21:39,381 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-09-24 21:21:39,381 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-09-24 21:21:39,382 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-09-24 21:21:39,382 INFO  L130     BoogieDeclarations]: Found specification of procedure stopSystem
[2020-09-24 21:21:39,382 INFO  L130     BoogieDeclarations]: Found specification of procedure startSystem
[2020-09-24 21:21:39,382 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1
[2020-09-24 21:21:39,383 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-09-24 21:21:39,383 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base
[2020-09-24 21:21:39,383 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterLevel
[2020-09-24 21:21:39,383 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor
[2020-09-24 21:21:39,383 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-09-24 21:21:39,384 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-24 21:21:39,384 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-09-24 21:21:39,384 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-09-24 21:21:39,384 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-09-24 21:21:39,384 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-09-24 21:21:39,384 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-09-24 21:21:39,385 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-09-24 21:21:39,386 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-09-24 21:21:39,387 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-09-24 21:21:39,388 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 21:21:39,388 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-09-24 21:21:39,388 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-09-24 21:21:39,388 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-09-24 21:21:39,388 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-09-24 21:21:39,388 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-09-24 21:21:39,388 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-09-24 21:21:39,389 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-09-24 21:21:39,389 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-09-24 21:21:39,389 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-09-24 21:21:39,390 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-09-24 21:21:39,390 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-24 21:21:39,390 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-09-24 21:21:39,391 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-09-24 21:21:39,391 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-09-24 21:21:39,391 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-09-24 21:21:39,391 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-09-24 21:21:39,391 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-09-24 21:21:39,391 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 21:21:39,391 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-09-24 21:21:39,392 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 21:21:40,661 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 21:21:40,661 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-09-24 21:21:40,669 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:21:40 BoogieIcfgContainer
[2020-09-24 21:21:40,670 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 21:21:40,671 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 21:21:40,671 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 21:21:40,675 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 21:21:40,675 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:21:38" (1/3) ...
[2020-09-24 21:21:40,676 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40728a4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:21:40, skipping insertion in model container
[2020-09-24 21:21:40,676 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:39" (2/3) ...
[2020-09-24 21:21:40,677 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40728a4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:21:40, skipping insertion in model container
[2020-09-24 21:21:40,677 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:21:40" (3/3) ...
[2020-09-24 21:21:40,679 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec3_product28.cil.c
[2020-09-24 21:21:40,692 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 21:21:40,703 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 21:21:40,726 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 21:21:40,759 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 21:21:40,759 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 21:21:40,759 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 21:21:40,759 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 21:21:40,759 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 21:21:40,759 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 21:21:40,759 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 21:21:40,760 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 21:21:40,789 INFO  L276                IsEmpty]: Start isEmpty. Operand 312 states.
[2020-09-24 21:21:40,808 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 154
[2020-09-24 21:21:40,808 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 21:21:40,809 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 21:21:40,810 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 21:21:40,818 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 21:21:40,818 INFO  L82        PathProgramCache]: Analyzing trace with hash 1905765184, now seen corresponding path program 1 times
[2020-09-24 21:21:40,828 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 21:21:40,829 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518692667]
[2020-09-24 21:21:40,829 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 21:21:41,184 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:41,315 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:41,540 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:43,173 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:46,211 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:46,212 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 186
[2020-09-24 21:21:46,213 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-24 21:21:46,214 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5017
[2020-09-24 21:21:46,220 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:46,221 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-09-24 21:21:46,222 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 78
[2020-09-24 21:21:46,223 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 62
[2020-09-24 21:21:46,223 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 8
[2020-09-24 21:21:46,762 WARN  L193               SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-09-24 21:21:46,767 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 21:21:46,825 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:46,867 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:47,124 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:47,125 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 85
[2020-09-24 21:21:47,125 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:47,125 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 298
[2020-09-24 21:21:47,126 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:47,126 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:47,126 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:47,127 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 74
[2020-09-24 21:21:47,127 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:21:47,232 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-09-24 21:21:47,234 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:47,236 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:47,245 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:47,246 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:21:47,246 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:47,246 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-09-24 21:21:47,247 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:47,247 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:47,247 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:47,247 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 21:21:47,248 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:47,250 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-09-24 21:21:47,251 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:47,253 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:47,256 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:47,256 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:21:47,257 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:47,257 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 21:21:47,257 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:47,257 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:47,258 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:47,258 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 21:21:47,258 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:21:47,261 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-09-24 21:21:47,262 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:47,264 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:47,275 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:47,275 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:47,275 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:47,276 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 12
[2020-09-24 21:21:47,276 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:47,276 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:47,277 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:47,277 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 21:21:47,277 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:21:47,280 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-09-24 21:21:47,281 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:47,283 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:47,287 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:47,288 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:21:47,288 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:47,288 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-24 21:21:47,288 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:47,289 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:47,289 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:47,289 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 21:21:47,289 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:47,291 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2020-09-24 21:21:47,292 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:47,296 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:47,299 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:47,299 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:47,299 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:47,300 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 21:21:47,300 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:47,300 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:21:47,300 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 21:21:47,301 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:21:47,301 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:21:47,304 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131
[2020-09-24 21:21:47,305 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:47,306 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:47,310 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:47,310 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:47,311 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:47,311 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 21:21:47,311 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:47,311 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:21:47,312 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 21:21:47,312 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:21:47,312 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:21:47,315 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141
[2020-09-24 21:21:47,318 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:47,320 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:47,323 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:47,323 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:47,323 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:47,324 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 21:21:47,324 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:47,324 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:21:47,325 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 21:21:47,325 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:21:47,325 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:21:47,368 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 21:21:47,369 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518692667]
[2020-09-24 21:21:47,371 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 21:21:47,371 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-24 21:21:47,372 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679836847]
[2020-09-24 21:21:47,381 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-24 21:21:47,381 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 21:21:47,399 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-24 21:21:47,400 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-24 21:21:47,403 INFO  L87              Difference]: Start difference. First operand 312 states. Second operand 4 states.
[2020-09-24 21:21:48,070 WARN  L193               SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 21:21:50,101 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 21:21:50,101 INFO  L93              Difference]: Finished difference Result 623 states and 756 transitions.
[2020-09-24 21:21:50,103 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-09-24 21:21:50,104 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 153
[2020-09-24 21:21:50,105 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 21:21:50,126 INFO  L225             Difference]: With dead ends: 623
[2020-09-24 21:21:50,127 INFO  L226             Difference]: Without dead ends: 438
[2020-09-24 21:21:50,133 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-09-24 21:21:50,157 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 438 states.
[2020-09-24 21:21:50,276 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 370.
[2020-09-24 21:21:50,278 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 370 states.
[2020-09-24 21:21:50,281 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 411 transitions.
[2020-09-24 21:21:50,283 INFO  L78                 Accepts]: Start accepts. Automaton has 370 states and 411 transitions. Word has length 153
[2020-09-24 21:21:50,284 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 21:21:50,284 INFO  L479      AbstractCegarLoop]: Abstraction has 370 states and 411 transitions.
[2020-09-24 21:21:50,284 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-24 21:21:50,284 INFO  L276                IsEmpty]: Start isEmpty. Operand 370 states and 411 transitions.
[2020-09-24 21:21:50,289 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 163
[2020-09-24 21:21:50,289 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 21:21:50,290 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]
[2020-09-24 21:21:50,290 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 21:21:50,290 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 21:21:50,291 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 21:21:50,291 INFO  L82        PathProgramCache]: Analyzing trace with hash -451969796, now seen corresponding path program 1 times
[2020-09-24 21:21:50,291 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 21:21:50,292 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774417689]
[2020-09-24 21:21:50,292 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 21:21:50,341 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:50,392 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:50,600 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:53,575 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:53,576 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 199
[2020-09-24 21:21:53,576 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 21:21:53,576 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3231
[2020-09-24 21:21:53,577 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:53,577 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 16
[2020-09-24 21:21:53,577 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 79
[2020-09-24 21:21:53,577 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 104
[2020-09-24 21:21:53,578 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:21:53,966 WARN  L193               SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-09-24 21:21:53,969 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 21:21:53,999 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:54,036 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:54,241 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:54,242 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 85
[2020-09-24 21:21:54,242 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:54,242 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 240
[2020-09-24 21:21:54,242 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:54,243 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:54,243 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:54,243 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 75
[2020-09-24 21:21:54,243 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:54,289 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-09-24 21:21:54,290 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:54,293 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:54,297 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:54,297 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:21:54,297 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:54,298 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-24 21:21:54,298 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:54,298 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:54,298 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:54,299 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 21:21:54,299 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:54,300 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-09-24 21:21:54,301 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:54,302 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:54,305 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:54,305 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:21:54,306 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:54,306 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 21:21:54,306 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:54,306 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:54,307 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:54,307 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 21:21:54,307 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:54,309 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-09-24 21:21:54,310 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:54,315 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:54,323 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:54,323 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:54,323 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:54,323 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 12
[2020-09-24 21:21:54,324 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:54,324 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:54,324 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:54,324 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 21:21:54,325 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:54,326 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-09-24 21:21:54,327 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:54,329 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:54,332 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:54,332 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:21:54,332 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:54,332 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 21:21:54,333 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:54,333 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:54,333 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:54,333 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 21:21:54,333 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:54,347 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118
[2020-09-24 21:21:54,349 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:54,351 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:54,354 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:54,354 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 15
[2020-09-24 21:21:54,354 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:54,355 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 21:21:54,355 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:54,355 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:54,355 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:54,355 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 11
[2020-09-24 21:21:54,356 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:54,358 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 21:21:54,358 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:54,359 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:54,361 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:54,361 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:21:54,361 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:54,361 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 21:21:54,362 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:54,362 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:21:54,362 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:54,362 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:21:54,363 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:54,364 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130
[2020-09-24 21:21:54,365 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:54,367 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:54,370 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:54,370 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:54,370 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:54,370 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 21:21:54,371 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:54,371 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:54,371 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:54,371 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 21:21:54,372 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:54,374 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140
[2020-09-24 21:21:54,375 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:54,377 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:54,383 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:54,384 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:54,384 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:54,384 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-24 21:21:54,384 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:54,384 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 21:21:54,385 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:54,385 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 21:21:54,385 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:54,421 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150
[2020-09-24 21:21:54,422 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:54,423 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:54,425 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:54,425 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:54,425 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:54,426 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 21:21:54,426 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:54,426 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:21:54,426 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 21:21:54,426 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:21:54,427 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:54,463 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 21:21:54,463 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774417689]
[2020-09-24 21:21:54,464 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 21:21:54,464 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2020-09-24 21:21:54,464 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673320394]
[2020-09-24 21:21:54,467 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-09-24 21:21:54,467 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 21:21:54,467 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-09-24 21:21:54,468 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90
[2020-09-24 21:21:54,468 INFO  L87              Difference]: Start difference. First operand 370 states and 411 transitions. Second operand 10 states.
[2020-09-24 21:21:55,038 WARN  L193               SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 21:21:56,999 WARN  L193               SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 21:21:57,647 WARN  L193               SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192
[2020-09-24 21:21:58,053 WARN  L193               SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-09-24 21:21:58,401 WARN  L193               SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 193
[2020-09-24 21:21:58,735 WARN  L193               SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-09-24 21:21:59,230 WARN  L193               SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 21:21:59,582 WARN  L193               SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 192
[2020-09-24 21:22:00,009 WARN  L193               SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 21:22:01,351 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 21:22:01,351 INFO  L93              Difference]: Finished difference Result 1089 states and 1408 transitions.
[2020-09-24 21:22:01,358 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-09-24 21:22:01,358 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 162
[2020-09-24 21:22:01,360 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 21:22:01,370 INFO  L225             Difference]: With dead ends: 1089
[2020-09-24 21:22:01,370 INFO  L226             Difference]: Without dead ends: 782
[2020-09-24 21:22:01,376 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380
[2020-09-24 21:22:01,377 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 782 states.
[2020-09-24 21:22:01,511 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 603.
[2020-09-24 21:22:01,512 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 603 states.
[2020-09-24 21:22:01,516 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 687 transitions.
[2020-09-24 21:22:01,516 INFO  L78                 Accepts]: Start accepts. Automaton has 603 states and 687 transitions. Word has length 162
[2020-09-24 21:22:01,517 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 21:22:01,517 INFO  L479      AbstractCegarLoop]: Abstraction has 603 states and 687 transitions.
[2020-09-24 21:22:01,517 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-09-24 21:22:01,518 INFO  L276                IsEmpty]: Start isEmpty. Operand 603 states and 687 transitions.
[2020-09-24 21:22:01,522 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 178
[2020-09-24 21:22:01,522 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 21:22:01,523 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, 1]
[2020-09-24 21:22:01,523 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 21:22:01,523 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 21:22:01,523 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 21:22:01,524 INFO  L82        PathProgramCache]: Analyzing trace with hash 525017164, now seen corresponding path program 1 times
[2020-09-24 21:22:01,524 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 21:22:01,524 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893190826]
[2020-09-24 21:22:01,524 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 21:22:01,585 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-24 21:22:01,593 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-24 21:22:01,593 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-09-24 21:22:01,599 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-24 21:22:01,626 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:22:01 BoogieIcfgContainer
[2020-09-24 21:22:01,626 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-24 21:22:01,629 INFO  L168              Benchmark]: Toolchain (without parser) took 23283.31 ms. Allocated memory was 139.5 MB in the beginning and 544.2 MB in the end (delta: 404.8 MB). Free memory was 101.6 MB in the beginning and 475.0 MB in the end (delta: -373.4 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB.
[2020-09-24 21:22:01,630 INFO  L168              Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-09-24 21:22:01,631 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 803.26 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 101.0 MB in the beginning and 172.8 MB in the end (delta: -71.8 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB.
[2020-09-24 21:22:01,631 INFO  L168              Benchmark]: Boogie Preprocessor took 115.71 ms. Allocated memory is still 203.4 MB. Free memory was 172.8 MB in the beginning and 168.7 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB.
[2020-09-24 21:22:01,632 INFO  L168              Benchmark]: RCFGBuilder took 1399.42 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 168.7 MB in the beginning and 177.9 MB in the end (delta: -9.3 MB). Peak memory consumption was 85.2 MB. Max. memory is 7.1 GB.
[2020-09-24 21:22:01,633 INFO  L168              Benchmark]: TraceAbstraction took 20955.59 ms. Allocated memory was 236.5 MB in the beginning and 544.2 MB in the end (delta: 307.8 MB). Free memory was 177.9 MB in the beginning and 475.0 MB in the end (delta: -297.1 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB.
[2020-09-24 21:22:01,637 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 803.26 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 101.0 MB in the beginning and 172.8 MB in the end (delta: -71.8 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 115.71 ms. Allocated memory is still 203.4 MB. Free memory was 172.8 MB in the beginning and 168.7 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 1399.42 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 168.7 MB in the beginning and 177.9 MB in the end (delta: -9.3 MB). Peak memory consumption was 85.2 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 20955.59 ms. Allocated memory was 236.5 MB in the beginning and 544.2 MB in the end (delta: 307.8 MB). Free memory was 177.9 MB in the beginning and 475.0 MB in the end (delta: -297.1 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 545]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L89]               int pumpRunning  =    0;
[L90]               int systemActive  =    1;
[L356]              int waterLevel  =    1;
[L357]              int methaneLevelCritical  =    0;
[L445]              int cleanupTimeShifts  =    4;
[L753]              static struct __ACC__ERR *head  =    (struct __ACC__ERR *)0;
[L518]              int retValue_acc ;
[L519]              int tmp ;
[L523]  FCALL       select_helpers()
[L524]  FCALL       select_features()
[L525]  CALL, EXPR  valid_product()
[L69]               int retValue_acc ;
[L72]               retValue_acc = 1
[L73]               return (retValue_acc);
[L525]  RET, EXPR   valid_product()
[L525]              tmp = valid_product()
[L527]  COND TRUE   \read(tmp)
[L529]  FCALL       setup()
[L530]  CALL        runTest()
[L512]  CALL        test()
[L287]              int splverifierCounter ;
[L288]              int tmp ;
[L289]              int tmp___0 ;
[L290]              int tmp___1 ;
[L291]              int tmp___2 ;
[L294]              splverifierCounter = 0
[L296]  COND TRUE   1
[L298]  COND TRUE   splverifierCounter < 4
[L304]              tmp = __VERIFIER_nondet_int()
[L306]  COND TRUE   \read(tmp)
[L308]  CALL        waterRise()
[L374]  COND TRUE   waterLevel < 2
[L375]              waterLevel = waterLevel + 1
[L308]  RET         waterRise()
[L314]              tmp___0 = __VERIFIER_nondet_int()
[L316]  COND FALSE  !(\read(tmp___0))
[L324]              tmp___2 = __VERIFIER_nondet_int()
[L326]  COND FALSE  !(\read(tmp___2))
[L332]              tmp___1 = __VERIFIER_nondet_int()
[L334]  COND TRUE   \read(tmp___1)
[L336]  CALL        stopSystem()
[L263]  COND FALSE  !(\read(pumpRunning))
[L270]              systemActive = 0
[L336]  RET         stopSystem()
[L343]  CALL        timeShift()
[L97]   COND FALSE  !(\read(pumpRunning))
[L104]  COND FALSE  !(\read(systemActive))
[L112]  CALL        __utac_acc__Specification3_spec__1()
[L551]              int tmp ;
[L552]              int tmp___0 ;
[L553]              int tmp___1 ;
[L557]  CALL, EXPR  isMethaneLevelCritical()
[L395]              int retValue_acc ;
[L398]              retValue_acc = methaneLevelCritical
[L399]              return (retValue_acc);
[L557]  RET, EXPR   isMethaneLevelCritical()
[L557]              tmp = isMethaneLevelCritical()
[L559]  COND FALSE  !(\read(tmp))
[L563]  CALL, EXPR  getWaterLevel()
[L427]              int retValue_acc ;
[L430]              retValue_acc = waterLevel
[L431]              return (retValue_acc);
[L563]  RET, EXPR   getWaterLevel()
[L563]              tmp___0 = getWaterLevel()
[L565]  COND TRUE   tmp___0 == 2
[L567]  CALL, EXPR  isPumpRunning()
[L196]              int retValue_acc ;
[L199]              retValue_acc = pumpRunning
[L200]              return (retValue_acc);
[L567]  RET, EXPR   isPumpRunning()
[L567]              tmp___1 = isPumpRunning()
[L569]  COND FALSE  !(\read(tmp___1))
[L573]  CALL        __automaton_fail()
[L545]              __VERIFIER_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 40 procedures, 628 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 20.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 9.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 485 SDtfs, 948 SDslu, 814 SDs, 0 SdLazy, 1857 SolverSat, 325 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=603occurred 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, 247 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 10.2s InterpolantComputationTime, 492 NumberOfCodeBlocks, 492 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 313 ConstructedInterpolants, 0 QuantifiedInterpolants, 140665 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...