/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product51.cil.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 16:44:36,302 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 16:44:36,307 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 16:44:36,350 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 16:44:36,350 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 16:44:36,351 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 16:44:36,353 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 16:44:36,355 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 16:44:36,357 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 16:44:36,358 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 16:44:36,359 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 16:44:36,361 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 16:44:36,361 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 16:44:36,362 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 16:44:36,364 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 16:44:36,365 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 16:44:36,366 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 16:44:36,367 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 16:44:36,370 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 16:44:36,372 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 16:44:36,374 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 16:44:36,375 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 16:44:36,376 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 16:44:36,377 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 16:44:36,380 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 16:44:36,380 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 16:44:36,381 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 16:44:36,382 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 16:44:36,382 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 16:44:36,383 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 16:44:36,384 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 16:44:36,385 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 16:44:36,386 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 16:44:36,387 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 16:44:36,388 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 16:44:36,388 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 16:44:36,389 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 16:44:36,389 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 16:44:36,389 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 16:44:36,391 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 16:44:36,391 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 16:44:36,392 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-09-24 16:44:36,419 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 16:44:36,419 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 16:44:36,421 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 16:44:36,421 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 16:44:36,421 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 16:44:36,421 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 16:44:36,422 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 16:44:36,422 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 16:44:36,422 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 16:44:36,422 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 16:44:36,422 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 16:44:36,423 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 16:44:36,423 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 16:44:36,423 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 16:44:36,423 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 16:44:36,423 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 16:44:36,424 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 16:44:36,424 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 16:44:36,424 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 16:44:36,424 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 16:44:36,424 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 16:44:36,425 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 16:44:36,425 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 16:44:36,425 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 16:44:36,425 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 16:44:36,426 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 16:44:36,426 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 16:44:36,426 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 16:44:36,426 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 16:44:36,426 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true;
[2020-09-24 16:44:36,864 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 16:44:36,882 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 16:44:36,886 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 16:44:36,888 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 16:44:36,889 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 16:44:36,890 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product51.cil.c
[2020-09-24 16:44:36,991 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac01a1131/0a64d5285d424c54907a16969475e14f/FLAG05f8d2760
[2020-09-24 16:44:37,592 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 16:44:37,593 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product51.cil.c
[2020-09-24 16:44:37,607 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac01a1131/0a64d5285d424c54907a16969475e14f/FLAG05f8d2760
[2020-09-24 16:44:37,888 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac01a1131/0a64d5285d424c54907a16969475e14f
[2020-09-24 16:44:37,904 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 16:44:37,911 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 16:44:37,915 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 16:44:37,915 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 16:44:37,920 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 16:44:37,921 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:44:37" (1/1) ...
[2020-09-24 16:44:37,926 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cfafcce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:37, skipping insertion in model container
[2020-09-24 16:44:37,926 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:44:37" (1/1) ...
[2020-09-24 16:44:37,937 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 16:44:38,007 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 16:44:38,464 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 16:44:38,479 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 16:44:38,565 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 16:44:38,611 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 16:44:38,612 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:38 WrapperNode
[2020-09-24 16:44:38,612 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 16:44:38,613 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 16:44:38,613 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 16:44:38,613 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 16:44:38,626 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:38" (1/1) ...
[2020-09-24 16:44:38,627 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:38" (1/1) ...
[2020-09-24 16:44:38,649 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:38" (1/1) ...
[2020-09-24 16:44:38,649 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:38" (1/1) ...
[2020-09-24 16:44:38,701 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:38" (1/1) ...
[2020-09-24 16:44:38,711 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:38" (1/1) ...
[2020-09-24 16:44:38,715 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:38" (1/1) ...
[2020-09-24 16:44:38,723 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 16:44:38,724 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 16:44:38,724 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 16:44:38,724 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 16:44:38,725 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:38" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 16:44:38,798 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 16:44:38,798 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 16:44:38,798 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-09-24 16:44:38,798 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-09-24 16:44:38,799 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-09-24 16:44:38,799 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base
[2020-09-24 16:44:38,799 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor
[2020-09-24 16:44:38,799 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-09-24 16:44:38,799 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-09-24 16:44:38,800 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-09-24 16:44:38,800 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-09-24 16:44:38,800 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-09-24 16:44:38,800 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-09-24 16:44:38,800 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterLevel
[2020-09-24 16:44:38,800 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterLevel
[2020-09-24 16:44:38,801 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopSystem
[2020-09-24 16:44:38,801 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-09-24 16:44:38,801 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-09-24 16:44:38,801 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-09-24 16:44:38,807 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-09-24 16:44:38,807 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-09-24 16:44:38,807 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-09-24 16:44:38,807 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-09-24 16:44:38,807 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-09-24 16:44:38,808 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-09-24 16:44:38,808 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-09-24 16:44:38,808 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-09-24 16:44:38,808 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1
[2020-09-24 16:44:38,808 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-09-24 16:44:38,809 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-09-24 16:44:38,809 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-09-24 16:44:38,809 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-09-24 16:44:38,809 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 16:44:38,809 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-09-24 16:44:38,809 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-09-24 16:44:38,809 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-09-24 16:44:38,810 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-09-24 16:44:38,810 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-09-24 16:44:38,810 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-09-24 16:44:38,810 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry
[2020-09-24 16:44:38,810 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry
[2020-09-24 16:44:38,810 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 16:44:38,811 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 16:44:38,811 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-09-24 16:44:38,811 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-09-24 16:44:38,811 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-09-24 16:44:38,811 INFO  L130     BoogieDeclarations]: Found specification of procedure stopSystem
[2020-09-24 16:44:38,811 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-09-24 16:44:38,811 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-09-24 16:44:38,812 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-09-24 16:44:38,812 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-09-24 16:44:38,812 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-09-24 16:44:38,812 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-09-24 16:44:38,812 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry
[2020-09-24 16:44:38,813 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry
[2020-09-24 16:44:38,813 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-09-24 16:44:38,813 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-09-24 16:44:38,813 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-09-24 16:44:38,813 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-09-24 16:44:38,813 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1
[2020-09-24 16:44:38,813 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-09-24 16:44:38,814 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base
[2020-09-24 16:44:38,814 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterLevel
[2020-09-24 16:44:38,814 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor
[2020-09-24 16:44:38,814 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterLevel
[2020-09-24 16:44:38,814 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-09-24 16:44:38,814 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-24 16:44:38,815 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-09-24 16:44:38,815 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-09-24 16:44:38,815 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-09-24 16:44:38,815 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-09-24 16:44:38,815 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-09-24 16:44:38,815 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-09-24 16:44:38,816 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-09-24 16:44:38,816 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-09-24 16:44:38,816 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-09-24 16:44:38,816 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-24 16:44:38,816 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-09-24 16:44:38,816 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-09-24 16:44:38,817 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-09-24 16:44:38,817 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-09-24 16:44:38,817 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-09-24 16:44:38,817 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-09-24 16:44:38,817 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-09-24 16:44:38,817 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-09-24 16:44:38,818 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-09-24 16:44:38,818 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-09-24 16:44:38,818 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-09-24 16:44:38,818 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-09-24 16:44:38,818 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-09-24 16:44:38,818 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-09-24 16:44:38,818 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 16:44:38,819 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-09-24 16:44:38,819 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 16:44:38,819 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-09-24 16:44:38,819 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 16:44:39,938 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 16:44:39,938 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-09-24 16:44:39,945 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:44:39 BoogieIcfgContainer
[2020-09-24 16:44:39,945 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 16:44:39,947 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 16:44:39,947 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 16:44:39,951 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 16:44:39,951 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:44:37" (1/3) ...
[2020-09-24 16:44:39,952 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79b7a6b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:44:39, skipping insertion in model container
[2020-09-24 16:44:39,952 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:38" (2/3) ...
[2020-09-24 16:44:39,953 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79b7a6b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:44:39, skipping insertion in model container
[2020-09-24 16:44:39,953 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:44:39" (3/3) ...
[2020-09-24 16:44:39,955 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec1_product51.cil.c
[2020-09-24 16:44:39,966 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 16:44:39,977 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 16:44:39,999 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 16:44:40,031 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 16:44:40,032 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 16:44:40,032 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 16:44:40,032 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 16:44:40,032 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 16:44:40,032 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 16:44:40,032 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 16:44:40,033 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 16:44:40,059 INFO  L276                IsEmpty]: Start isEmpty. Operand 324 states.
[2020-09-24 16:44:40,076 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 143
[2020-09-24 16:44:40,077 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:44:40,078 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 16:44:40,079 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:44:40,085 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:44:40,086 INFO  L82        PathProgramCache]: Analyzing trace with hash 1497316138, now seen corresponding path program 1 times
[2020-09-24 16:44:40,097 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:44:40,098 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831640517]
[2020-09-24 16:44:40,098 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:44:40,519 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:44:40,669 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:44:40,834 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:44:42,257 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:44:43,185 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:44:44,291 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:44:58,398 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:44:58,399 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 173
[2020-09-24 16:44:58,399 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 5
[2020-09-24 16:44:58,399 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 17870
[2020-09-24 16:44:58,401 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:44:58,401 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-09-24 16:44:58,401 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 78
[2020-09-24 16:44:58,402 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 62
[2020-09-24 16:44:58,402 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-24 16:44:58,887 WARN  L193               SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-09-24 16:44:58,891 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 16:44:58,967 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:44:59,017 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:44:59,222 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:44:59,223 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 85
[2020-09-24 16:44:59,223 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:44:59,223 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 253
[2020-09-24 16:44:59,226 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:44:59,226 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:44:59,226 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:44:59,227 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 74
[2020-09-24 16:44:59,227 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:44:59,323 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-09-24 16:44:59,326 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:44:59,328 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:44:59,333 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:44:59,333 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:44:59,333 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:44:59,334 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-24 16:44:59,334 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:44:59,334 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:44:59,334 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:44:59,335 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 16:44:59,335 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:44:59,338 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-09-24 16:44:59,344 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:44:59,346 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:44:59,351 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:44:59,352 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:44:59,352 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:44:59,352 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-24 16:44:59,353 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:44:59,353 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:44:59,354 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:44:59,354 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 16:44:59,354 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:44:59,357 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-09-24 16:44:59,359 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:44:59,362 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:44:59,380 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:44:59,381 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:44:59,381 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:44:59,381 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 20
[2020-09-24 16:44:59,382 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:44:59,382 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:44:59,382 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:44:59,383 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 16:44:59,383 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:44:59,385 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-09-24 16:44:59,386 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:44:59,388 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:44:59,392 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:44:59,392 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:44:59,392 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:44:59,393 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 16:44:59,393 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:44:59,394 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:44:59,394 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:44:59,395 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 16:44:59,396 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-24 16:44:59,398 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120
[2020-09-24 16:44:59,399 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:44:59,403 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:44:59,405 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:44:59,406 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:44:59,407 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:44:59,407 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:44:59,408 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:44:59,408 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:44:59,408 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 16:44:59,409 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:44:59,409 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:44:59,412 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130
[2020-09-24 16:44:59,413 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:44:59,415 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:44:59,416 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:44:59,417 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:44:59,417 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:44:59,417 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:44:59,418 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:44:59,418 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:44:59,419 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 16:44:59,419 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:44:59,420 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-24 16:44:59,464 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 16:44:59,465 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831640517]
[2020-09-24 16:44:59,468 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 16:44:59,469 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-24 16:44:59,470 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944010854]
[2020-09-24 16:44:59,479 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-24 16:44:59,480 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 16:44:59,505 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-24 16:44:59,506 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-24 16:44:59,509 INFO  L87              Difference]: Start difference. First operand 324 states. Second operand 4 states.
[2020-09-24 16:45:00,162 WARN  L193               SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 16:45:02,641 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 16:45:02,642 INFO  L93              Difference]: Finished difference Result 692 states and 838 transitions.
[2020-09-24 16:45:02,643 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-09-24 16:45:02,644 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 142
[2020-09-24 16:45:02,646 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 16:45:02,669 INFO  L225             Difference]: With dead ends: 692
[2020-09-24 16:45:02,670 INFO  L226             Difference]: Without dead ends: 485
[2020-09-24 16:45:02,676 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 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 16:45:02,700 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 485 states.
[2020-09-24 16:45:02,858 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 418.
[2020-09-24 16:45:02,860 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 418 states.
[2020-09-24 16:45:02,866 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 467 transitions.
[2020-09-24 16:45:02,870 INFO  L78                 Accepts]: Start accepts. Automaton has 418 states and 467 transitions. Word has length 142
[2020-09-24 16:45:02,871 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 16:45:02,871 INFO  L479      AbstractCegarLoop]: Abstraction has 418 states and 467 transitions.
[2020-09-24 16:45:02,872 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-24 16:45:02,872 INFO  L276                IsEmpty]: Start isEmpty. Operand 418 states and 467 transitions.
[2020-09-24 16:45:02,890 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 157
[2020-09-24 16:45:02,891 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:45:02,891 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]
[2020-09-24 16:45:02,892 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 16:45:02,892 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:45:02,892 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:45:02,893 INFO  L82        PathProgramCache]: Analyzing trace with hash -1793750736, now seen corresponding path program 1 times
[2020-09-24 16:45:02,893 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:45:02,893 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956552101]
[2020-09-24 16:45:02,893 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:45:02,947 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:45:02,998 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:45:03,140 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:45:03,330 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:45:03,664 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:45:07,314 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:45:08,114 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:45:08,253 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:45:08,340 FATAL L256   erpolLogProxyWrapper]: Now shrinking...