/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER --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_product60.cil.c


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


This is Ultimate 0.1.25-177f698
[2020-08-21 18:47:31,266 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-08-21 18:47:31,269 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-08-21 18:47:31,293 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-08-21 18:47:31,294 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-08-21 18:47:31,295 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-08-21 18:47:31,297 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-08-21 18:47:31,299 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-08-21 18:47:31,300 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-08-21 18:47:31,301 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-08-21 18:47:31,302 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-08-21 18:47:31,303 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-08-21 18:47:31,304 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-08-21 18:47:31,308 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-08-21 18:47:31,309 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-08-21 18:47:31,310 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-08-21 18:47:31,311 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-08-21 18:47:31,312 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-08-21 18:47:31,316 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-08-21 18:47:31,319 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-08-21 18:47:31,323 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-08-21 18:47:31,324 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-08-21 18:47:31,326 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-08-21 18:47:31,329 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-08-21 18:47:31,334 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-08-21 18:47:31,334 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-08-21 18:47:31,334 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-08-21 18:47:31,335 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-08-21 18:47:31,336 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-08-21 18:47:31,337 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-08-21 18:47:31,339 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-08-21 18:47:31,339 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-08-21 18:47:31,340 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-08-21 18:47:31,341 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-08-21 18:47:31,343 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-08-21 18:47:31,343 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-08-21 18:47:31,344 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-08-21 18:47:31,344 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-08-21 18:47:31,344 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-08-21 18:47:31,355 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-08-21 18:47:31,356 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-08-21 18:47:31,358 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
[2020-08-21 18:47:31,405 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-08-21 18:47:31,405 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-08-21 18:47:31,407 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-08-21 18:47:31,407 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-08-21 18:47:31,407 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-08-21 18:47:31,407 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-08-21 18:47:31,407 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-08-21 18:47:31,408 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-08-21 18:47:31,408 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-08-21 18:47:31,408 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-08-21 18:47:31,408 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-08-21 18:47:31,408 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-08-21 18:47:31,409 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-08-21 18:47:31,409 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-08-21 18:47:31,409 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-08-21 18:47:31,409 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-08-21 18:47:31,409 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-08-21 18:47:31,410 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-08-21 18:47:31,410 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-08-21 18:47:31,410 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-08-21 18:47:31,410 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-08-21 18:47:31,410 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-21 18:47:31,411 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-08-21 18:47:31,411 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-08-21 18:47:31,411 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-08-21 18:47:31,411 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-08-21 18:47:31,411 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-08-21 18:47:31,412 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-08-21 18:47:31,412 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-08-21 18:47:31,412 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.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true;
[2020-08-21 18:47:31,695 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-08-21 18:47:31,707 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-08-21 18:47:31,710 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-08-21 18:47:31,712 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-08-21 18:47:31,712 INFO  L275        PluginConnector]: CDTParser initialized
[2020-08-21 18:47:31,713 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product60.cil.c
[2020-08-21 18:47:31,787 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/131ba0589/e2253602129f405bb313898eded2003e/FLAG218802596
[2020-08-21 18:47:32,318 INFO  L306              CDTParser]: Found 1 translation units.
[2020-08-21 18:47:32,319 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product60.cil.c
[2020-08-21 18:47:32,333 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/131ba0589/e2253602129f405bb313898eded2003e/FLAG218802596
[2020-08-21 18:47:32,677 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/131ba0589/e2253602129f405bb313898eded2003e
[2020-08-21 18:47:32,687 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-08-21 18:47:32,689 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-08-21 18:47:32,690 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-08-21 18:47:32,690 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-08-21 18:47:32,694 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-08-21 18:47:32,695 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:47:32" (1/1) ...
[2020-08-21 18:47:32,698 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21046f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:47:32, skipping insertion in model container
[2020-08-21 18:47:32,698 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:47:32" (1/1) ...
[2020-08-21 18:47:32,707 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-08-21 18:47:32,770 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-08-21 18:47:33,225 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-21 18:47:33,253 INFO  L203         MainTranslator]: Completed pre-run
[2020-08-21 18:47:33,382 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-21 18:47:33,420 INFO  L208         MainTranslator]: Completed translation
[2020-08-21 18:47:33,421 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:47:33 WrapperNode
[2020-08-21 18:47:33,421 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-08-21 18:47:33,422 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-08-21 18:47:33,422 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-08-21 18:47:33,422 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-08-21 18:47:33,436 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:47:33" (1/1) ...
[2020-08-21 18:47:33,436 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:47:33" (1/1) ...
[2020-08-21 18:47:33,455 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:47:33" (1/1) ...
[2020-08-21 18:47:33,455 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:47:33" (1/1) ...
[2020-08-21 18:47:33,487 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:47:33" (1/1) ...
[2020-08-21 18:47:33,498 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:47:33" (1/1) ...
[2020-08-21 18:47:33,503 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:47:33" (1/1) ...
[2020-08-21 18:47:33,511 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-08-21 18:47:33,512 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-08-21 18:47:33,512 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-08-21 18:47:33,512 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-08-21 18:47:33,513 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:47:33" (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
[2020-08-21 18:47:33,574 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-08-21 18:47:33,574 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-08-21 18:47:33,574 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-08-21 18:47:33,574 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-08-21 18:47:33,574 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-08-21 18:47:33,575 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base
[2020-08-21 18:47:33,575 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor
[2020-08-21 18:47:33,575 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-08-21 18:47:33,575 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor
[2020-08-21 18:47:33,575 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-08-21 18:47:33,575 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-08-21 18:47:33,576 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-08-21 18:47:33,576 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-08-21 18:47:33,576 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-08-21 18:47:33,576 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterLevel
[2020-08-21 18:47:33,576 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterLevel
[2020-08-21 18:47:33,576 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopSystem
[2020-08-21 18:47:33,576 INFO  L138     BoogieDeclarations]: Found implementation of procedure startSystem
[2020-08-21 18:47:33,577 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1
[2020-08-21 18:47:33,577 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-08-21 18:47:33,577 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-08-21 18:47:33,577 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-08-21 18:47:33,577 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-08-21 18:47:33,577 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-08-21 18:47:33,578 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-08-21 18:47:33,578 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-08-21 18:47:33,578 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-08-21 18:47:33,578 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-08-21 18:47:33,578 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-08-21 18:47:33,578 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-08-21 18:47:33,578 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-08-21 18:47:33,579 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-08-21 18:47:33,579 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-08-21 18:47:33,579 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-08-21 18:47:33,579 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-08-21 18:47:33,579 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-08-21 18:47:33,579 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry
[2020-08-21 18:47:33,579 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry
[2020-08-21 18:47:33,580 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-08-21 18:47:33,580 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-08-21 18:47:33,580 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-08-21 18:47:33,580 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-08-21 18:47:33,580 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-08-21 18:47:33,580 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-08-21 18:47:33,581 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-08-21 18:47:33,581 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-08-21 18:47:33,581 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-08-21 18:47:33,581 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-08-21 18:47:33,581 INFO  L130     BoogieDeclarations]: Found specification of procedure startSystem
[2020-08-21 18:47:33,581 INFO  L130     BoogieDeclarations]: Found specification of procedure stopSystem
[2020-08-21 18:47:33,581 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-08-21 18:47:33,582 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-08-21 18:47:33,582 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-08-21 18:47:33,582 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-08-21 18:47:33,582 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-08-21 18:47:33,582 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-08-21 18:47:33,582 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry
[2020-08-21 18:47:33,583 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry
[2020-08-21 18:47:33,583 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-08-21 18:47:33,583 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-08-21 18:47:33,583 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-08-21 18:47:33,583 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-08-21 18:47:33,583 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1
[2020-08-21 18:47:33,583 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-08-21 18:47:33,584 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base
[2020-08-21 18:47:33,584 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterLevel
[2020-08-21 18:47:33,584 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor
[2020-08-21 18:47:33,584 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterLevel
[2020-08-21 18:47:33,584 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor
[2020-08-21 18:47:33,584 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-08-21 18:47:33,584 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-08-21 18:47:33,585 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-08-21 18:47:33,585 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-08-21 18:47:33,585 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-08-21 18:47:33,585 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-08-21 18:47:33,585 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-08-21 18:47:33,585 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-08-21 18:47:33,585 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-08-21 18:47:33,586 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-08-21 18:47:33,586 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-08-21 18:47:33,586 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-08-21 18:47:33,586 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-08-21 18:47:33,586 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-08-21 18:47:33,586 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-08-21 18:47:33,586 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-08-21 18:47:33,587 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-08-21 18:47:33,587 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-08-21 18:47:33,587 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-08-21 18:47:33,587 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-08-21 18:47:33,587 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-08-21 18:47:33,587 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-08-21 18:47:33,588 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-08-21 18:47:33,588 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-08-21 18:47:33,588 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-08-21 18:47:33,588 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-08-21 18:47:33,588 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-08-21 18:47:33,588 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-08-21 18:47:33,589 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-08-21 18:47:33,589 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-08-21 18:47:33,589 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-08-21 18:47:34,639 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-08-21 18:47:34,640 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-08-21 18:47:34,649 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:47:34 BoogieIcfgContainer
[2020-08-21 18:47:34,649 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-08-21 18:47:34,653 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-08-21 18:47:34,653 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-08-21 18:47:34,656 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-08-21 18:47:34,657 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:47:32" (1/3) ...
[2020-08-21 18:47:34,658 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d16bafa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:47:34, skipping insertion in model container
[2020-08-21 18:47:34,658 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:47:33" (2/3) ...
[2020-08-21 18:47:34,659 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d16bafa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:47:34, skipping insertion in model container
[2020-08-21 18:47:34,659 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:47:34" (3/3) ...
[2020-08-21 18:47:34,661 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec3_product60.cil.c
[2020-08-21 18:47:34,671 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-08-21 18:47:34,682 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-08-21 18:47:34,696 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-08-21 18:47:34,724 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-08-21 18:47:34,725 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-08-21 18:47:34,725 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-08-21 18:47:34,725 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-08-21 18:47:34,725 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-08-21 18:47:34,726 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-08-21 18:47:34,726 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-08-21 18:47:34,726 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-08-21 18:47:34,748 INFO  L276                IsEmpty]: Start isEmpty. Operand 199 states.
[2020-08-21 18:47:34,760 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2020-08-21 18:47:34,761 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 18:47:34,762 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-21 18:47:34,762 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 18:47:34,768 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 18:47:34,769 INFO  L82        PathProgramCache]: Analyzing trace with hash -1529441714, now seen corresponding path program 1 times
[2020-08-21 18:47:34,778 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 18:47:34,779 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837709694]
[2020-08-21 18:47:34,779 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 18:47:35,004 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:35,436 WARN  L193               SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-21 18:47:35,438 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 18:47:35,447 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:35,503 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 18:47:35,505 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:35,507 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 18:47:35,507 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:35,513 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 18:47:35,514 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:35,519 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 18:47:35,520 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:35,524 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32
[2020-08-21 18:47:35,525 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:35,528 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2020-08-21 18:47:35,530 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:35,536 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44
[2020-08-21 18:47:35,539 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:35,561 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 18:47:35,562 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1837709694]
[2020-08-21 18:47:35,564 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 18:47:35,565 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-08-21 18:47:35,566 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119783840]
[2020-08-21 18:47:35,572 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-08-21 18:47:35,573 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 18:47:35,588 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-08-21 18:47:35,589 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-08-21 18:47:35,591 INFO  L87              Difference]: Start difference. First operand 199 states. Second operand 3 states.
[2020-08-21 18:47:36,890 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 18:47:36,890 INFO  L93              Difference]: Finished difference Result 358 states and 461 transitions.
[2020-08-21 18:47:36,891 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-08-21 18:47:36,892 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 52
[2020-08-21 18:47:36,893 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 18:47:36,921 INFO  L225             Difference]: With dead ends: 358
[2020-08-21 18:47:36,921 INFO  L226             Difference]: Without dead ends: 193
[2020-08-21 18:47:36,927 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-08-21 18:47:36,949 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 193 states.
[2020-08-21 18:47:37,064 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 156.
[2020-08-21 18:47:37,066 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 156 states.
[2020-08-21 18:47:37,068 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 183 transitions.
[2020-08-21 18:47:37,070 INFO  L78                 Accepts]: Start accepts. Automaton has 156 states and 183 transitions. Word has length 52
[2020-08-21 18:47:37,070 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 18:47:37,071 INFO  L479      AbstractCegarLoop]: Abstraction has 156 states and 183 transitions.
[2020-08-21 18:47:37,071 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-08-21 18:47:37,071 INFO  L276                IsEmpty]: Start isEmpty. Operand 156 states and 183 transitions.
[2020-08-21 18:47:37,075 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 54
[2020-08-21 18:47:37,075 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 18:47:37,075 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]
[2020-08-21 18:47:37,076 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-08-21 18:47:37,076 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 18:47:37,076 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 18:47:37,076 INFO  L82        PathProgramCache]: Analyzing trace with hash 2080089166, now seen corresponding path program 1 times
[2020-08-21 18:47:37,077 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 18:47:37,077 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811261625]
[2020-08-21 18:47:37,077 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 18:47:37,114 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:37,378 WARN  L193               SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-21 18:47:37,380 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 18:47:37,385 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:37,404 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 18:47:37,405 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:37,406 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 18:47:37,407 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:37,408 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 18:47:37,408 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:37,410 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 18:47:37,411 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:37,411 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33
[2020-08-21 18:47:37,412 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:37,413 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39
[2020-08-21 18:47:37,414 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:37,415 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2020-08-21 18:47:37,416 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:37,423 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 18:47:37,424 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811261625]
[2020-08-21 18:47:37,424 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 18:47:37,424 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-08-21 18:47:37,425 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672550222]
[2020-08-21 18:47:37,426 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-08-21 18:47:37,427 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 18:47:37,427 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-08-21 18:47:37,427 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-08-21 18:47:37,427 INFO  L87              Difference]: Start difference. First operand 156 states and 183 transitions. Second operand 4 states.
[2020-08-21 18:47:37,857 WARN  L193               SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-21 18:47:38,873 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 18:47:38,873 INFO  L93              Difference]: Finished difference Result 281 states and 340 transitions.
[2020-08-21 18:47:38,874 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-08-21 18:47:38,874 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 53
[2020-08-21 18:47:38,875 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 18:47:38,878 INFO  L225             Difference]: With dead ends: 281
[2020-08-21 18:47:38,879 INFO  L226             Difference]: Without dead ends: 177
[2020-08-21 18:47:38,881 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-08-21 18:47:38,881 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 177 states.
[2020-08-21 18:47:38,933 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 147.
[2020-08-21 18:47:38,934 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 147 states.
[2020-08-21 18:47:38,935 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 171 transitions.
[2020-08-21 18:47:38,936 INFO  L78                 Accepts]: Start accepts. Automaton has 147 states and 171 transitions. Word has length 53
[2020-08-21 18:47:38,936 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 18:47:38,936 INFO  L479      AbstractCegarLoop]: Abstraction has 147 states and 171 transitions.
[2020-08-21 18:47:38,936 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-08-21 18:47:38,936 INFO  L276                IsEmpty]: Start isEmpty. Operand 147 states and 171 transitions.
[2020-08-21 18:47:38,939 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 59
[2020-08-21 18:47:38,939 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 18:47:38,939 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]
[2020-08-21 18:47:38,939 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-08-21 18:47:38,940 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 18:47:38,940 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 18:47:38,940 INFO  L82        PathProgramCache]: Analyzing trace with hash 1856420908, now seen corresponding path program 1 times
[2020-08-21 18:47:38,940 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 18:47:38,941 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081673435]
[2020-08-21 18:47:38,941 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 18:47:38,973 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:39,289 WARN  L193               SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-21 18:47:39,291 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 18:47:39,305 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:39,344 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 18:47:39,346 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:39,348 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 18:47:39,349 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:39,351 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 18:47:39,355 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:39,396 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 18:47:39,397 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:39,398 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2020-08-21 18:47:39,399 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:39,400 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44
[2020-08-21 18:47:39,401 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:39,402 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50
[2020-08-21 18:47:39,403 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:39,413 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 18:47:39,414 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081673435]
[2020-08-21 18:47:39,414 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 18:47:39,414 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-08-21 18:47:39,414 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066658407]
[2020-08-21 18:47:39,415 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-08-21 18:47:39,415 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 18:47:39,415 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-08-21 18:47:39,416 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2020-08-21 18:47:39,416 INFO  L87              Difference]: Start difference. First operand 147 states and 171 transitions. Second operand 8 states.
[2020-08-21 18:47:39,750 WARN  L193               SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-21 18:47:40,062 WARN  L193               SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 18:47:40,298 WARN  L193               SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 18:47:40,530 WARN  L193               SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 18:47:41,238 WARN  L193               SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-21 18:47:43,416 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 18:47:43,416 INFO  L93              Difference]: Finished difference Result 506 states and 621 transitions.
[2020-08-21 18:47:43,417 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-08-21 18:47:43,417 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 58
[2020-08-21 18:47:43,418 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 18:47:43,423 INFO  L225             Difference]: With dead ends: 506
[2020-08-21 18:47:43,423 INFO  L226             Difference]: Without dead ends: 383
[2020-08-21 18:47:43,424 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156
[2020-08-21 18:47:43,425 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 383 states.
[2020-08-21 18:47:43,533 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 314.
[2020-08-21 18:47:43,534 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 314 states.
[2020-08-21 18:47:43,536 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 377 transitions.
[2020-08-21 18:47:43,536 INFO  L78                 Accepts]: Start accepts. Automaton has 314 states and 377 transitions. Word has length 58
[2020-08-21 18:47:43,537 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 18:47:43,537 INFO  L479      AbstractCegarLoop]: Abstraction has 314 states and 377 transitions.
[2020-08-21 18:47:43,537 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-08-21 18:47:43,537 INFO  L276                IsEmpty]: Start isEmpty. Operand 314 states and 377 transitions.
[2020-08-21 18:47:43,540 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 64
[2020-08-21 18:47:43,540 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 18:47:43,540 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]
[2020-08-21 18:47:43,541 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-08-21 18:47:43,541 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 18:47:43,541 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 18:47:43,541 INFO  L82        PathProgramCache]: Analyzing trace with hash 425111279, now seen corresponding path program 1 times
[2020-08-21 18:47:43,542 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 18:47:43,542 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102772540]
[2020-08-21 18:47:43,542 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 18:47:43,573 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:43,853 WARN  L193               SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-21 18:47:43,854 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 18:47:43,867 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:43,883 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 18:47:43,887 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:43,889 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 18:47:43,893 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:43,897 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 18:47:43,898 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:43,900 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 18:47:43,901 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:43,929 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33
[2020-08-21 18:47:43,930 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:43,933 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43
[2020-08-21 18:47:43,934 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:43,937 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49
[2020-08-21 18:47:43,938 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:43,949 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55
[2020-08-21 18:47:43,950 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:43,960 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 18:47:43,961 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102772540]
[2020-08-21 18:47:43,961 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 18:47:43,961 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-08-21 18:47:43,961 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84992227]
[2020-08-21 18:47:43,962 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-08-21 18:47:43,962 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 18:47:43,962 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-08-21 18:47:43,963 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2020-08-21 18:47:43,963 INFO  L87              Difference]: Start difference. First operand 314 states and 377 transitions. Second operand 8 states.
[2020-08-21 18:47:44,260 WARN  L193               SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-21 18:47:45,686 WARN  L193               SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 18:47:46,054 WARN  L193               SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 18:47:46,339 WARN  L193               SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 18:47:46,632 WARN  L193               SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-21 18:47:47,573 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 18:47:47,573 INFO  L93              Difference]: Finished difference Result 973 states and 1259 transitions.
[2020-08-21 18:47:47,574 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-08-21 18:47:47,574 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 63
[2020-08-21 18:47:47,575 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 18:47:47,582 INFO  L225             Difference]: With dead ends: 973
[2020-08-21 18:47:47,582 INFO  L226             Difference]: Without dead ends: 683
[2020-08-21 18:47:47,585 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182
[2020-08-21 18:47:47,587 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 683 states.
[2020-08-21 18:47:47,721 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 609.
[2020-08-21 18:47:47,722 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 609 states.
[2020-08-21 18:47:47,726 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 743 transitions.
[2020-08-21 18:47:47,727 INFO  L78                 Accepts]: Start accepts. Automaton has 609 states and 743 transitions. Word has length 63
[2020-08-21 18:47:47,727 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 18:47:47,727 INFO  L479      AbstractCegarLoop]: Abstraction has 609 states and 743 transitions.
[2020-08-21 18:47:47,727 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-08-21 18:47:47,728 INFO  L276                IsEmpty]: Start isEmpty. Operand 609 states and 743 transitions.
[2020-08-21 18:47:47,730 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2020-08-21 18:47:47,731 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 18:47:47,731 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-21 18:47:47,731 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-08-21 18:47:47,731 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 18:47:47,732 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 18:47:47,732 INFO  L82        PathProgramCache]: Analyzing trace with hash 1458119221, now seen corresponding path program 1 times
[2020-08-21 18:47:47,732 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 18:47:47,732 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169922452]
[2020-08-21 18:47:47,733 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 18:47:47,761 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:48,068 WARN  L193               SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-21 18:47:48,069 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 18:47:48,082 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:48,098 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 18:47:48,099 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:48,100 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 18:47:48,101 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:48,102 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 18:47:48,103 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:48,104 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 18:47:48,105 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:48,137 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33
[2020-08-21 18:47:48,138 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:48,147 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2020-08-21 18:47:48,148 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:48,150 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47
[2020-08-21 18:47:48,150 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:48,153 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53
[2020-08-21 18:47:48,153 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:48,160 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59
[2020-08-21 18:47:48,161 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:47:48,177 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 18:47:48,177 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169922452]
[2020-08-21 18:47:48,177 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 18:47:48,177 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-08-21 18:47:48,179 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67047114]
[2020-08-21 18:47:48,180 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-08-21 18:47:48,181 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 18:47:48,181 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-08-21 18:47:48,181 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-08-21 18:47:48,181 INFO  L87              Difference]: Start difference. First operand 609 states and 743 transitions. Second operand 6 states.
[2020-08-21 18:47:48,523 WARN  L193               SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-21 18:47:50,494 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 18:47:50,495 INFO  L93              Difference]: Finished difference Result 1435 states and 1848 transitions.
[2020-08-21 18:47:50,496 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-08-21 18:47:50,496 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 67
[2020-08-21 18:47:50,496 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 18:47:50,504 INFO  L225             Difference]: With dead ends: 1435
[2020-08-21 18:47:50,504 INFO  L226             Difference]: Without dead ends: 850
[2020-08-21 18:47:50,507 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110
[2020-08-21 18:47:50,509 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 850 states.
[2020-08-21 18:47:50,653 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 777.
[2020-08-21 18:47:50,654 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 777 states.
[2020-08-21 18:47:50,660 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 940 transitions.
[2020-08-21 18:47:50,662 INFO  L78                 Accepts]: Start accepts. Automaton has 777 states and 940 transitions. Word has length 67
[2020-08-21 18:47:50,663 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 18:47:50,663 INFO  L479      AbstractCegarLoop]: Abstraction has 777 states and 940 transitions.
[2020-08-21 18:47:50,663 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-08-21 18:47:50,663 INFO  L276                IsEmpty]: Start isEmpty. Operand 777 states and 940 transitions.
[2020-08-21 18:47:50,665 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2020-08-21 18:47:50,665 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 18:47:50,666 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-21 18:47:50,666 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-08-21 18:47:50,666 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 18:47:50,666 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 18:47:50,666 INFO  L82        PathProgramCache]: Analyzing trace with hash -1610113419, now seen corresponding path program 1 times
[2020-08-21 18:47:50,667 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 18:47:50,667 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713149330]
[2020-08-21 18:47:50,667 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 18:47:50,742 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-08-21 18:47:50,747 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-08-21 18:47:50,748 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-08-21 18:47:50,752 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-08-21 18:47:50,785 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 06:47:50 BoogieIcfgContainer
[2020-08-21 18:47:50,786 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-08-21 18:47:50,789 INFO  L168              Benchmark]: Toolchain (without parser) took 18099.19 ms. Allocated memory was 140.0 MB in the beginning and 550.5 MB in the end (delta: 410.5 MB). Free memory was 101.8 MB in the beginning and 223.9 MB in the end (delta: -122.1 MB). Peak memory consumption was 288.4 MB. Max. memory is 7.1 GB.
[2020-08-21 18:47:50,790 INFO  L168              Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-08-21 18:47:50,797 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 731.31 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 101.6 MB in the beginning and 165.7 MB in the end (delta: -64.0 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB.
[2020-08-21 18:47:50,798 INFO  L168              Benchmark]: Boogie Preprocessor took 89.50 ms. Allocated memory is still 202.4 MB. Free memory was 165.7 MB in the beginning and 161.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB.
[2020-08-21 18:47:50,798 INFO  L168              Benchmark]: RCFGBuilder took 1137.87 ms. Allocated memory was 202.4 MB in the beginning and 236.5 MB in the end (delta: 34.1 MB). Free memory was 161.7 MB in the beginning and 188.7 MB in the end (delta: -27.0 MB). Peak memory consumption was 78.4 MB. Max. memory is 7.1 GB.
[2020-08-21 18:47:50,799 INFO  L168              Benchmark]: TraceAbstraction took 16132.98 ms. Allocated memory was 236.5 MB in the beginning and 550.5 MB in the end (delta: 314.0 MB). Free memory was 187.3 MB in the beginning and 223.9 MB in the end (delta: -36.7 MB). Peak memory consumption was 277.4 MB. Max. memory is 7.1 GB.
[2020-08-21 18:47:50,812 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 731.31 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 101.6 MB in the beginning and 165.7 MB in the end (delta: -64.0 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 89.50 ms. Allocated memory is still 202.4 MB. Free memory was 165.7 MB in the beginning and 161.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 1137.87 ms. Allocated memory was 202.4 MB in the beginning and 236.5 MB in the end (delta: 34.1 MB). Free memory was 161.7 MB in the beginning and 188.7 MB in the end (delta: -27.0 MB). Peak memory consumption was 78.4 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 16132.98 ms. Allocated memory was 236.5 MB in the beginning and 550.5 MB in the end (delta: 314.0 MB). Free memory was 187.3 MB in the beginning and 223.9 MB in the end (delta: -36.7 MB). Peak memory consumption was 277.4 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 769]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L124]               int pumpRunning  =    0;
[L125]               int systemActive  =    1;
[L568]               static struct __ACC__ERR *head  =    (struct __ACC__ERR *)0;
[L812]               int waterLevel  =    1;
[L813]               int methaneLevelCritical  =    0;
[L915]               int cleanupTimeShifts  =    4;
[L988]               int retValue_acc ;
[L989]               int tmp ;
[L993]   FCALL       select_helpers()
[L994]   FCALL       select_features()
[L995]   CALL, EXPR  valid_product()
[L803]               int retValue_acc ;
[L806]               retValue_acc = 1
[L807]               return (retValue_acc);
[L995]   RET, EXPR   valid_product()
[L995]               tmp = valid_product()
[L997]   COND TRUE   \read(tmp)
[L999]   FCALL       setup()
[L1000]  CALL        runTest()
[L982]   CALL        test()
[L47]                int splverifierCounter ;
[L48]                int tmp ;
[L49]                int tmp___0 ;
[L50]                int tmp___1 ;
[L51]                int tmp___2 ;
[L54]                splverifierCounter = 0
[L56]    COND TRUE   1
[L58]    COND TRUE   splverifierCounter < 4
[L64]                tmp = __VERIFIER_nondet_int()
[L66]    COND TRUE   \read(tmp)
[L68]    CALL        waterRise()
[L830]   COND TRUE   waterLevel < 2
[L831]               waterLevel = waterLevel + 1
[L68]    RET         waterRise()
[L74]                tmp___0 = __VERIFIER_nondet_int()
[L76]    COND FALSE  !(\read(tmp___0))
[L84]                tmp___2 = __VERIFIER_nondet_int()
[L86]    COND FALSE  !(\read(tmp___2))
[L92]                tmp___1 = __VERIFIER_nondet_int()
[L94]    COND TRUE   \read(tmp___1)
[L96]    CALL        stopSystem()
[L343]   COND FALSE  !(\read(pumpRunning))
[L350]               systemActive = 0
[L96]    RET         stopSystem()
[L103]   CALL        timeShift()
[L132]   COND FALSE  !(\read(pumpRunning))
[L139]   COND FALSE  !(\read(systemActive))
[L147]   CALL        __utac_acc__Specification3_spec__1()
[L366]               int tmp ;
[L367]               int tmp___0 ;
[L368]               int tmp___1 ;
[L372]   CALL, EXPR  isMethaneLevelCritical()
[L851]               int retValue_acc ;
[L854]               retValue_acc = methaneLevelCritical
[L855]               return (retValue_acc);
[L372]   RET, EXPR   isMethaneLevelCritical()
[L372]               tmp = isMethaneLevelCritical()
[L374]   COND FALSE  !(\read(tmp))
[L378]   CALL, EXPR  getWaterLevel()
[L883]               int retValue_acc ;
[L886]               retValue_acc = waterLevel
[L887]               return (retValue_acc);
[L378]   RET, EXPR   getWaterLevel()
[L378]               tmp___0 = getWaterLevel()
[L380]   COND TRUE   tmp___0 == 2
[L382]   CALL, EXPR  isPumpRunning()
[L257]               int retValue_acc ;
[L260]               retValue_acc = pumpRunning
[L261]               return (retValue_acc);
[L382]   RET, EXPR   isPumpRunning()
[L382]               tmp___1 = isPumpRunning()
[L384]   COND FALSE  !(\read(tmp___1))
[L388]   CALL        __automaton_fail()
[L769]               __VERIFIER_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 43 procedures, 255 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 16.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 12.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 719 SDtfs, 1300 SDslu, 479 SDs, 0 SdLazy, 2650 SolverSat, 820 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=777occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 283 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 360 NumberOfCodeBlocks, 360 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 288 ConstructedInterpolants, 0 QuantifiedInterpolants, 82716 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...