/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_product26.cil.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 21:21:27,542 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 21:21:27,546 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 21:21:27,573 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 21:21:27,573 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 21:21:27,575 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 21:21:27,576 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 21:21:27,578 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 21:21:27,580 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 21:21:27,581 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2020-09-24 21:21:27,584 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 21:21:27,585 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 21:21:27,586 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 21:21:27,587 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 21:21:27,589 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 21:21:27,590 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 21:21:27,591 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 21:21:27,593 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 21:21:27,595 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 21:21:27,597 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 21:21:27,602 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 21:21:27,603 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 21:21:27,605 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 21:21:27,611 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 21:21:27,611 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 21:21:27,611 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 21:21:27,613 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 21:21:27,613 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 21:21:27,614 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 21:21:27,617 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 21:21:27,618 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 21:21:27,619 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 21:21:27,621 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 21:21:27,622 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 21:21:27,622 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 21:21:27,623 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 21:21:27,624 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 21:21:27,624 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 21:21:27,625 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 21:21:27,627 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 21:21:27,628 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 21:21:27,688 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 21:21:27,689 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 21:21:27,690 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 21:21:27,690 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 21:21:27,690 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 21:21:27,691 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 21:21:27,691 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 21:21:27,691 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 21:21:27,691 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 21:21:27,692 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 21:21:27,692 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 21:21:27,692 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 21:21:27,692 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 21:21:27,692 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 21:21:27,693 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 21:21:27,693 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 21:21:27,693 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 21:21:27,693 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 21:21:27,693 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 21:21:27,694 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 21:21:27,694 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 21:21:27,694 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 21:21:27,694 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 21:21:27,694 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 21:21:27,695 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 21:21:27,695 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 21:21:27,695 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 21:21:27,695 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 21:21:27,695 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 21:21:27,696 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 21:21:28,216 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 21:21:28,244 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 21:21:28,248 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 21:21:28,251 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 21:21:28,253 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 21:21:28,254 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product26.cil.c
[2020-09-24 21:21:28,348 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b9a6597b/b7eddcca48b84505a95f1a0ed640357b/FLAGb37faf297
[2020-09-24 21:21:28,998 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 21:21:29,002 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product26.cil.c
[2020-09-24 21:21:29,034 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b9a6597b/b7eddcca48b84505a95f1a0ed640357b/FLAGb37faf297
[2020-09-24 21:21:29,213 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b9a6597b/b7eddcca48b84505a95f1a0ed640357b
[2020-09-24 21:21:29,224 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 21:21:29,229 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 21:21:29,231 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 21:21:29,231 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 21:21:29,236 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 21:21:29,237 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:21:29" (1/1) ...
[2020-09-24 21:21:29,242 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22589b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:29, skipping insertion in model container
[2020-09-24 21:21:29,242 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:21:29" (1/1) ...
[2020-09-24 21:21:29,252 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 21:21:29,312 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 21:21:29,674 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 21:21:29,693 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 21:21:29,924 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 21:21:29,964 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 21:21:29,965 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:29 WrapperNode
[2020-09-24 21:21:29,965 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 21:21:29,966 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 21:21:29,966 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 21:21:29,966 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 21:21:29,980 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:29" (1/1) ...
[2020-09-24 21:21:29,981 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:29" (1/1) ...
[2020-09-24 21:21:30,002 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:29" (1/1) ...
[2020-09-24 21:21:30,003 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:29" (1/1) ...
[2020-09-24 21:21:30,055 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:29" (1/1) ...
[2020-09-24 21:21:30,064 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:29" (1/1) ...
[2020-09-24 21:21:30,069 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:29" (1/1) ...
[2020-09-24 21:21:30,077 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 21:21:30,077 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 21:21:30,077 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 21:21:30,078 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 21:21:30,079 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:29" (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 21:21:30,176 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 21:21:30,177 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 21:21:30,177 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-09-24 21:21:30,177 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-09-24 21:21:30,177 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-09-24 21:21:30,178 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-09-24 21:21:30,178 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-09-24 21:21:30,179 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 21:21:30,180 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-09-24 21:21:30,180 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-09-24 21:21:30,180 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-09-24 21:21:30,180 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-09-24 21:21:30,181 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-09-24 21:21:30,181 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-09-24 21:21:30,181 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-09-24 21:21:30,182 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-09-24 21:21:30,183 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-09-24 21:21:30,183 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-09-24 21:21:30,183 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry
[2020-09-24 21:21:30,183 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-09-24 21:21:30,184 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-09-24 21:21:30,184 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-09-24 21:21:30,184 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-09-24 21:21:30,185 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-09-24 21:21:30,185 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-09-24 21:21:30,186 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-09-24 21:21:30,186 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-09-24 21:21:30,186 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base
[2020-09-24 21:21:30,186 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-09-24 21:21:30,186 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor
[2020-09-24 21:21:30,187 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-09-24 21:21:30,187 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-09-24 21:21:30,187 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-09-24 21:21:30,187 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-09-24 21:21:30,187 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-09-24 21:21:30,187 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterLevel
[2020-09-24 21:21:30,187 INFO  L138     BoogieDeclarations]: Found implementation of procedure startSystem
[2020-09-24 21:21:30,188 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-09-24 21:21:30,188 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1
[2020-09-24 21:21:30,188 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 21:21:30,188 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 21:21:30,188 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-09-24 21:21:30,189 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-09-24 21:21:30,189 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-09-24 21:21:30,189 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-09-24 21:21:30,189 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-09-24 21:21:30,189 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-09-24 21:21:30,190 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-09-24 21:21:30,190 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-09-24 21:21:30,190 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-09-24 21:21:30,191 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-09-24 21:21:30,191 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-09-24 21:21:30,191 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-09-24 21:21:30,191 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-09-24 21:21:30,192 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 21:21:30,192 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-09-24 21:21:30,192 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-09-24 21:21:30,192 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-09-24 21:21:30,192 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-09-24 21:21:30,192 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-09-24 21:21:30,193 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry
[2020-09-24 21:21:30,193 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-24 21:21:30,193 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-09-24 21:21:30,193 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-09-24 21:21:30,194 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-09-24 21:21:30,194 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-09-24 21:21:30,194 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-09-24 21:21:30,194 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-09-24 21:21:30,194 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-09-24 21:21:30,194 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-09-24 21:21:30,195 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-09-24 21:21:30,196 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-24 21:21:30,197 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-09-24 21:21:30,197 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-09-24 21:21:30,197 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-09-24 21:21:30,197 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-09-24 21:21:30,198 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-09-24 21:21:30,198 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-09-24 21:21:30,198 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-09-24 21:21:30,198 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-09-24 21:21:30,198 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-09-24 21:21:30,198 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-09-24 21:21:30,199 INFO  L130     BoogieDeclarations]: Found specification of procedure startSystem
[2020-09-24 21:21:30,200 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1
[2020-09-24 21:21:30,200 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-09-24 21:21:30,200 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base
[2020-09-24 21:21:30,200 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterLevel
[2020-09-24 21:21:30,200 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor
[2020-09-24 21:21:30,200 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-09-24 21:21:30,200 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 21:21:30,201 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-09-24 21:21:30,201 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 21:21:31,467 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 21:21:31,468 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-09-24 21:21:31,475 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:21:31 BoogieIcfgContainer
[2020-09-24 21:21:31,476 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 21:21:31,477 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 21:21:31,477 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 21:21:31,481 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 21:21:31,481 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:21:29" (1/3) ...
[2020-09-24 21:21:31,483 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@82b9164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:21:31, skipping insertion in model container
[2020-09-24 21:21:31,483 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:29" (2/3) ...
[2020-09-24 21:21:31,483 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@82b9164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:21:31, skipping insertion in model container
[2020-09-24 21:21:31,484 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:21:31" (3/3) ...
[2020-09-24 21:21:31,486 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec3_product26.cil.c
[2020-09-24 21:21:31,499 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 21:21:31,511 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 21:21:31,534 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 21:21:31,572 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 21:21:31,572 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 21:21:31,572 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 21:21:31,573 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 21:21:31,573 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 21:21:31,573 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 21:21:31,573 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 21:21:31,573 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 21:21:31,604 INFO  L276                IsEmpty]: Start isEmpty. Operand 306 states.
[2020-09-24 21:21:31,623 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 154
[2020-09-24 21:21:31,623 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 21:21:31,625 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 21:21:31,625 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 21:21:31,633 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 21:21:31,634 INFO  L82        PathProgramCache]: Analyzing trace with hash -502047938, now seen corresponding path program 1 times
[2020-09-24 21:21:31,645 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 21:21:31,646 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43219398]
[2020-09-24 21:21:31,646 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 21:21:31,963 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:32,090 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:32,405 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:34,082 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:36,984 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:36,984 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 186
[2020-09-24 21:21:36,985 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-24 21:21:36,985 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5011
[2020-09-24 21:21:36,988 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:36,989 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 16
[2020-09-24 21:21:36,989 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 78
[2020-09-24 21:21:36,989 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 92
[2020-09-24 21:21:36,990 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-09-24 21:21:37,639 WARN  L193               SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-09-24 21:21:37,642 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 21:21:37,682 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:37,727 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:37,965 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:37,965 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 85
[2020-09-24 21:21:37,966 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:37,966 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 282
[2020-09-24 21:21:37,966 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:37,966 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:37,966 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:37,967 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 74
[2020-09-24 21:21:37,967 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:38,058 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-09-24 21:21:38,059 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:38,062 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:38,070 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:38,070 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:21:38,070 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:38,071 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-09-24 21:21:38,071 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:38,071 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:38,071 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:38,072 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 21:21:38,072 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:21:38,075 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-09-24 21:21:38,077 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:38,078 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:38,087 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:38,088 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:21:38,088 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:38,088 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-09-24 21:21:38,088 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:38,089 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:38,089 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:38,089 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 21:21:38,089 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:38,092 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-09-24 21:21:38,093 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:38,096 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:38,106 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:38,107 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:38,107 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:38,107 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 12
[2020-09-24 21:21:38,108 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:38,108 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:38,109 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:38,109 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 21:21:38,109 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:21:38,112 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-09-24 21:21:38,114 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:38,118 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:38,122 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:38,122 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:21:38,122 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:38,123 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-24 21:21:38,123 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:38,123 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:38,123 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:38,124 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 21:21:38,124 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:38,128 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2020-09-24 21:21:38,129 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:38,131 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:38,136 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:38,137 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:38,137 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:38,138 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-24 21:21:38,138 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:38,138 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:38,139 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:38,139 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 21:21:38,140 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:21:38,142 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131
[2020-09-24 21:21:38,143 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:38,146 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:38,163 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:38,164 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:38,164 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:38,164 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 19
[2020-09-24 21:21:38,164 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:38,165 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 21:21:38,165 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:38,165 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 21:21:38,166 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:21:38,204 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141
[2020-09-24 21:21:38,207 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:38,209 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:38,212 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:38,212 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:38,212 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:38,212 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 21:21:38,213 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:38,213 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:21:38,213 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 21:21:38,213 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:21:38,214 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:38,303 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 21:21:38,304 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43219398]
[2020-09-24 21:21:38,306 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 21:21:38,306 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-09-24 21:21:38,308 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444911127]
[2020-09-24 21:21:38,318 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-09-24 21:21:38,318 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 21:21:38,338 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-09-24 21:21:38,341 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2020-09-24 21:21:38,343 INFO  L87              Difference]: Start difference. First operand 306 states. Second operand 8 states.
[2020-09-24 21:21:39,031 WARN  L193               SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 21:21:40,455 WARN  L193               SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 21:21:40,817 WARN  L193               SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-09-24 21:21:41,228 WARN  L193               SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 21:21:41,667 WARN  L193               SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-09-24 21:21:42,032 WARN  L193               SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 21:21:42,728 WARN  L193               SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 21:21:43,049 WARN  L193               SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 21:21:44,163 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 21:21:44,164 INFO  L93              Difference]: Finished difference Result 586 states and 723 transitions.
[2020-09-24 21:21:44,171 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-09-24 21:21:44,173 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 153
[2020-09-24 21:21:44,175 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 21:21:44,215 INFO  L225             Difference]: With dead ends: 586
[2020-09-24 21:21:44,215 INFO  L226             Difference]: Without dead ends: 390
[2020-09-24 21:21:44,232 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240
[2020-09-24 21:21:44,269 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 390 states.
[2020-09-24 21:21:44,373 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 346.
[2020-09-24 21:21:44,374 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 346 states.
[2020-09-24 21:21:44,377 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 380 transitions.
[2020-09-24 21:21:44,380 INFO  L78                 Accepts]: Start accepts. Automaton has 346 states and 380 transitions. Word has length 153
[2020-09-24 21:21:44,381 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 21:21:44,381 INFO  L479      AbstractCegarLoop]: Abstraction has 346 states and 380 transitions.
[2020-09-24 21:21:44,381 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-09-24 21:21:44,381 INFO  L276                IsEmpty]: Start isEmpty. Operand 346 states and 380 transitions.
[2020-09-24 21:21:44,386 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 173
[2020-09-24 21:21:44,387 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 21:21:44,387 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]
[2020-09-24 21:21:44,388 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 21:21:44,388 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 21:21:44,388 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 21:21:44,388 INFO  L82        PathProgramCache]: Analyzing trace with hash -812188964, now seen corresponding path program 1 times
[2020-09-24 21:21:44,389 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 21:21:44,389 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868002024]
[2020-09-24 21:21:44,389 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 21:21:44,452 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:44,512 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:44,826 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:44,827 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 207
[2020-09-24 21:21:44,827 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:44,827 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 371
[2020-09-24 21:21:44,828 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:44,828 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:44,828 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 153
[2020-09-24 21:21:44,829 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-09-24 21:21:44,829 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:21:45,259 WARN  L193               SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-09-24 21:21:45,260 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 21:21:45,270 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:45,282 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:45,388 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:45,388 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 85
[2020-09-24 21:21:45,389 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:45,389 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 116
[2020-09-24 21:21:45,389 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:45,389 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:21:45,390 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:45,390 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:21:45,390 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:45,427 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-09-24 21:21:45,427 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:45,429 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:45,431 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:45,431 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:21:45,431 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:45,431 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 21:21:45,432 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:45,432 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:21:45,432 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:45,432 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:21:45,433 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:45,434 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-09-24 21:21:45,435 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:45,436 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:45,437 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:45,438 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:21:45,438 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:45,438 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 21:21:45,438 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:45,438 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:21:45,439 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:45,439 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:21:45,439 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:45,440 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-09-24 21:21:45,441 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:45,442 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:45,446 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:45,447 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:45,447 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:45,447 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-24 21:21:45,447 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:45,448 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:21:45,448 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:45,448 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:21:45,448 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:45,450 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-09-24 21:21:45,451 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:45,452 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:45,453 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:45,453 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:21:45,454 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:45,454 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 21:21:45,454 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:45,454 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:21:45,455 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:45,455 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:21:45,455 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:45,466 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116
[2020-09-24 21:21:45,467 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:45,469 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:45,471 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:45,471 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-24 21:21:45,471 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:45,471 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 21:21:45,472 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:45,472 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:21:45,472 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:45,472 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:21:45,473 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:45,482 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129
[2020-09-24 21:21:45,483 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:45,484 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:45,487 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:45,488 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-09-24 21:21:45,488 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:45,488 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 21:21:45,488 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:45,488 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:21:45,489 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:21:45,489 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-09-24 21:21:45,489 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:45,491 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140
[2020-09-24 21:21:45,492 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:45,493 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:45,495 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:45,495 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:45,495 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:45,495 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 21:21:45,496 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:45,496 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:21:45,496 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 21:21:45,496 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:21:45,497 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:45,498 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150
[2020-09-24 21:21:45,499 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:45,500 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:45,502 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:45,502 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:45,502 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:45,503 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 21:21:45,503 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:45,503 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:21:45,503 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 21:21:45,504 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:21:45,504 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:45,505 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160
[2020-09-24 21:21:45,506 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:21:45,508 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:21:45,509 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:21:45,509 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:21:45,510 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:21:45,510 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 21:21:45,510 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:21:45,510 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:21:45,510 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 21:21:45,511 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:21:45,511 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:21:45,545 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 21:21:45,546 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868002024]
[2020-09-24 21:21:45,546 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 21:21:45,546 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-09-24 21:21:45,546 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53750827]
[2020-09-24 21:21:45,549 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-09-24 21:21:45,549 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 21:21:45,549 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-09-24 21:21:45,550 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-09-24 21:21:45,550 INFO  L87              Difference]: Start difference. First operand 346 states and 380 transitions. Second operand 6 states.
[2020-09-24 21:21:46,038 WARN  L193               SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 21:21:47,442 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 21:21:47,442 INFO  L93              Difference]: Finished difference Result 725 states and 881 transitions.
[2020-09-24 21:21:47,446 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-09-24 21:21:47,446 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 172
[2020-09-24 21:21:47,447 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 21:21:47,453 INFO  L225             Difference]: With dead ends: 725
[2020-09-24 21:21:47,453 INFO  L226             Difference]: Without dead ends: 489
[2020-09-24 21:21:47,456 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110
[2020-09-24 21:21:47,462 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 489 states.
[2020-09-24 21:21:47,527 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 351.
[2020-09-24 21:21:47,527 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 351 states.
[2020-09-24 21:21:47,530 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 385 transitions.
[2020-09-24 21:21:47,530 INFO  L78                 Accepts]: Start accepts. Automaton has 351 states and 385 transitions. Word has length 172
[2020-09-24 21:21:47,531 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 21:21:47,531 INFO  L479      AbstractCegarLoop]: Abstraction has 351 states and 385 transitions.
[2020-09-24 21:21:47,531 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-09-24 21:21:47,531 INFO  L276                IsEmpty]: Start isEmpty. Operand 351 states and 385 transitions.
[2020-09-24 21:21:47,535 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 181
[2020-09-24 21:21:47,535 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 21:21:47,535 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, 1, 1, 1]
[2020-09-24 21:21:47,535 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 21:21:47,536 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 21:21:47,536 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 21:21:47,536 INFO  L82        PathProgramCache]: Analyzing trace with hash 74620443, now seen corresponding path program 1 times
[2020-09-24 21:21:47,536 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 21:21:47,537 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796141944]
[2020-09-24 21:21:47,537 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 21:21:47,603 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-24 21:21:47,611 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-24 21:21:47,612 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-09-24 21:21:47,617 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-24 21:21:47,643 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:21:47 BoogieIcfgContainer
[2020-09-24 21:21:47,643 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-24 21:21:47,645 INFO  L168              Benchmark]: Toolchain (without parser) took 18419.49 ms. Allocated memory was 140.0 MB in the beginning and 448.3 MB in the end (delta: 308.3 MB). Free memory was 100.6 MB in the beginning and 159.4 MB in the end (delta: -58.8 MB). Peak memory consumption was 249.5 MB. Max. memory is 7.1 GB.
[2020-09-24 21:21:47,646 INFO  L168              Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-09-24 21:21:47,647 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 734.78 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 100.0 MB in the beginning and 173.4 MB in the end (delta: -73.4 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB.
[2020-09-24 21:21:47,648 INFO  L168              Benchmark]: Boogie Preprocessor took 111.27 ms. Allocated memory is still 203.4 MB. Free memory was 173.4 MB in the beginning and 169.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB.
[2020-09-24 21:21:47,649 INFO  L168              Benchmark]: RCFGBuilder took 1398.53 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 169.3 MB in the beginning and 179.7 MB in the end (delta: -10.4 MB). Peak memory consumption was 85.5 MB. Max. memory is 7.1 GB.
[2020-09-24 21:21:47,650 INFO  L168              Benchmark]: TraceAbstraction took 16166.41 ms. Allocated memory was 237.0 MB in the beginning and 448.3 MB in the end (delta: 211.3 MB). Free memory was 179.7 MB in the beginning and 159.4 MB in the end (delta: 20.3 MB). Peak memory consumption was 231.6 MB. Max. memory is 7.1 GB.
[2020-09-24 21:21:47,654 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.28 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 734.78 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 100.0 MB in the beginning and 173.4 MB in the end (delta: -73.4 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 111.27 ms. Allocated memory is still 203.4 MB. Free memory was 173.4 MB in the beginning and 169.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 1398.53 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 169.3 MB in the beginning and 179.7 MB in the end (delta: -10.4 MB). Peak memory consumption was 85.5 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 16166.41 ms. Allocated memory was 237.0 MB in the beginning and 448.3 MB in the end (delta: 211.3 MB). Free memory was 179.7 MB in the beginning and 159.4 MB in the end (delta: 20.3 MB). Peak memory consumption was 231.6 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 643]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L40]               int cleanupTimeShifts  =    4;
[L184]              int waterLevel  =    1;
[L185]              int methaneLevelCritical  =    0;
[L442]              static struct __ACC__ERR *head  =    (struct __ACC__ERR *)0;
[L652]              int pumpRunning  =    0;
[L653]              int systemActive  =    1;
[L121]              int retValue_acc ;
[L122]              int tmp ;
[L126]  FCALL       select_helpers()
[L127]  FCALL       select_features()
[L128]  CALL, EXPR  valid_product()
[L170]              int retValue_acc ;
[L173]              retValue_acc = 1
[L174]              return (retValue_acc);
[L128]  RET, EXPR   valid_product()
[L128]              tmp = valid_product()
[L130]  COND TRUE   \read(tmp)
[L132]  FCALL       setup()
[L133]  CALL        runTest()
[L112]  CALL        test()
[L832]              int splverifierCounter ;
[L833]              int tmp ;
[L834]              int tmp___0 ;
[L835]              int tmp___1 ;
[L836]              int tmp___2 ;
[L839]              splverifierCounter = 0
[L841]  COND TRUE   1
[L843]  COND TRUE   splverifierCounter < 4
[L849]              tmp = __VERIFIER_nondet_int()
[L851]  COND TRUE   \read(tmp)
[L853]  CALL        waterRise()
[L202]  COND TRUE   waterLevel < 2
[L203]              waterLevel = waterLevel + 1
[L853]  RET         waterRise()
[L859]              tmp___0 = __VERIFIER_nondet_int()
[L861]  COND FALSE  !(\read(tmp___0))
[L869]              tmp___2 = __VERIFIER_nondet_int()
[L871]  COND TRUE   \read(tmp___2)
[L873]  CALL        startSystem()
[L826]              systemActive = 1
[L873]  RET         startSystem()
[L886]  CALL        timeShift()
[L660]  COND FALSE  !(\read(pumpRunning))
[L667]  COND TRUE   \read(systemActive)
[L669]  CALL        processEnvironment()
[L689]              int tmp ;
[L692]  COND FALSE  !(\read(pumpRunning))
[L707]  FCALL       processEnvironment__wrappee__base()
[L669]  RET         processEnvironment()
[L675]  CALL        __utac_acc__Specification3_spec__1()
[L899]              int tmp ;
[L900]              int tmp___0 ;
[L901]              int tmp___1 ;
[L905]  CALL, EXPR  isMethaneLevelCritical()
[L223]              int retValue_acc ;
[L226]              retValue_acc = methaneLevelCritical
[L227]              return (retValue_acc);
[L905]  RET, EXPR   isMethaneLevelCritical()
[L905]              tmp = isMethaneLevelCritical()
[L907]  COND FALSE  !(\read(tmp))
[L911]  CALL, EXPR  getWaterLevel()
[L255]              int retValue_acc ;
[L258]              retValue_acc = waterLevel
[L259]              return (retValue_acc);
[L911]  RET, EXPR   getWaterLevel()
[L911]              tmp___0 = getWaterLevel()
[L913]  COND TRUE   tmp___0 == 2
[L915]  CALL, EXPR  isPumpRunning()
[L759]              int retValue_acc ;
[L762]              retValue_acc = pumpRunning
[L763]              return (retValue_acc);
[L915]  RET, EXPR   isPumpRunning()
[L915]              tmp___1 = isPumpRunning()
[L917]  COND FALSE  !(\read(tmp___1))
[L921]  CALL        __automaton_fail()
[L643]              __VERIFIER_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 39 procedures, 622 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 16.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 467 SDtfs, 933 SDslu, 706 SDs, 0 SdLazy, 1469 SolverSat, 314 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=351occurred 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: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 182 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 7.3s InterpolantComputationTime, 505 NumberOfCodeBlocks, 505 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 323 ConstructedInterpolants, 0 QuantifiedInterpolants, 128744 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...