/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product25.cil.c


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


This is Ultimate 0.1.25-5644d1e-m
[2020-08-18 21:44:49,967 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-08-18 21:44:49,970 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-08-18 21:44:50,000 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-08-18 21:44:50,001 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-08-18 21:44:50,002 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-08-18 21:44:50,003 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-08-18 21:44:50,005 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-08-18 21:44:50,007 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-08-18 21:44:50,008 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-08-18 21:44:50,008 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-08-18 21:44:50,009 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-08-18 21:44:50,010 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-08-18 21:44:50,011 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-08-18 21:44:50,012 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-08-18 21:44:50,013 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-08-18 21:44:50,014 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-08-18 21:44:50,015 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-08-18 21:44:50,017 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-08-18 21:44:50,019 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-08-18 21:44:50,020 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-08-18 21:44:50,021 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-08-18 21:44:50,022 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-08-18 21:44:50,023 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-08-18 21:44:50,026 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-08-18 21:44:50,028 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-08-18 21:44:50,028 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-08-18 21:44:50,029 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-08-18 21:44:50,030 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-08-18 21:44:50,031 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-08-18 21:44:50,031 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-08-18 21:44:50,031 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-08-18 21:44:50,032 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-08-18 21:44:50,033 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-08-18 21:44:50,034 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-08-18 21:44:50,034 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-08-18 21:44:50,035 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-08-18 21:44:50,035 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-08-18 21:44:50,035 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-08-18 21:44:50,036 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-08-18 21:44:50,037 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-08-18 21:44:50,038 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
[2020-08-18 21:44:50,060 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-08-18 21:44:50,061 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-08-18 21:44:50,062 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-08-18 21:44:50,062 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-08-18 21:44:50,062 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-08-18 21:44:50,063 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-08-18 21:44:50,063 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-08-18 21:44:50,063 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-08-18 21:44:50,063 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-08-18 21:44:50,063 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-08-18 21:44:50,064 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-08-18 21:44:50,064 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-08-18 21:44:50,064 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-08-18 21:44:50,064 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-08-18 21:44:50,064 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-08-18 21:44:50,065 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-08-18 21:44:50,065 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-08-18 21:44:50,065 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-08-18 21:44:50,065 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-08-18 21:44:50,065 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-08-18 21:44:50,065 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-08-18 21:44:50,066 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-18 21:44:50,066 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-08-18 21:44:50,066 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-08-18 21:44:50,066 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-08-18 21:44:50,066 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-08-18 21:44:50,067 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-08-18 21:44:50,067 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-08-18 21:44:50,067 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-08-18 21:44:50,067 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=5;interpolation-heuristic=NARROWEST;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST;
[2020-08-18 21:44:50,357 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-08-18 21:44:50,369 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-08-18 21:44:50,373 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-08-18 21:44:50,374 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-08-18 21:44:50,375 INFO  L275        PluginConnector]: CDTParser initialized
[2020-08-18 21:44:50,375 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product25.cil.c
[2020-08-18 21:44:50,437 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb889907a/3af3925688e64311a8a5fcdfa0391bcc/FLAGd977c4bd6
[2020-08-18 21:44:50,881 INFO  L306              CDTParser]: Found 1 translation units.
[2020-08-18 21:44:50,882 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product25.cil.c
[2020-08-18 21:44:50,898 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb889907a/3af3925688e64311a8a5fcdfa0391bcc/FLAGd977c4bd6
[2020-08-18 21:44:51,253 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb889907a/3af3925688e64311a8a5fcdfa0391bcc
[2020-08-18 21:44:51,262 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-08-18 21:44:51,263 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-08-18 21:44:51,264 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-08-18 21:44:51,264 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-08-18 21:44:51,268 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-08-18 21:44:51,269 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:44:51" (1/1) ...
[2020-08-18 21:44:51,272 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 18.08 09:44:51, skipping insertion in model container
[2020-08-18 21:44:51,275 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:44:51" (1/1) ...
[2020-08-18 21:44:51,282 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-08-18 21:44:51,341 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-08-18 21:44:51,893 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-18 21:44:51,906 INFO  L203         MainTranslator]: Completed pre-run
[2020-08-18 21:44:51,983 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-18 21:44:52,023 INFO  L208         MainTranslator]: Completed translation
[2020-08-18 21:44:52,023 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:44:52 WrapperNode
[2020-08-18 21:44:52,023 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-08-18 21:44:52,024 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-08-18 21:44:52,024 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-08-18 21:44:52,024 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-08-18 21:44:52,039 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:44:52" (1/1) ...
[2020-08-18 21:44:52,040 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:44:52" (1/1) ...
[2020-08-18 21:44:52,060 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:44:52" (1/1) ...
[2020-08-18 21:44:52,060 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:44:52" (1/1) ...
[2020-08-18 21:44:52,091 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:44:52" (1/1) ...
[2020-08-18 21:44:52,102 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:44:52" (1/1) ...
[2020-08-18 21:44:52,107 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:44:52" (1/1) ...
[2020-08-18 21:44:52,114 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-08-18 21:44:52,115 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-08-18 21:44:52,115 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-08-18 21:44:52,115 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-08-18 21:44:52,116 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:44:52" (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
[2020-08-18 21:44:52,199 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-08-18 21:44:52,200 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-08-18 21:44:52,200 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-08-18 21:44:52,200 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1
[2020-08-18 21:44:52,201 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-08-18 21:44:52,201 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-08-18 21:44:52,201 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-08-18 21:44:52,202 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-08-18 21:44:52,202 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-08-18 21:44:52,202 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-08-18 21:44:52,203 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-08-18 21:44:52,203 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-08-18 21:44:52,203 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-08-18 21:44:52,203 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-08-18 21:44:52,203 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-08-18 21:44:52,204 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-08-18 21:44:52,205 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-08-18 21:44:52,205 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry
[2020-08-18 21:44:52,205 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-08-18 21:44:52,205 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-08-18 21:44:52,205 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-08-18 21:44:52,205 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-08-18 21:44:52,205 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-08-18 21:44:52,206 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-08-18 21:44:52,206 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-08-18 21:44:52,207 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-08-18 21:44:52,207 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-08-18 21:44:52,207 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-08-18 21:44:52,207 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base
[2020-08-18 21:44:52,208 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-08-18 21:44:52,208 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor
[2020-08-18 21:44:52,208 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-08-18 21:44:52,209 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-08-18 21:44:52,209 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-08-18 21:44:52,209 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-08-18 21:44:52,209 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-08-18 21:44:52,209 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterLevel
[2020-08-18 21:44:52,210 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-08-18 21:44:52,210 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-08-18 21:44:52,210 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-08-18 21:44:52,210 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-08-18 21:44:52,211 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-08-18 21:44:52,211 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-08-18 21:44:52,211 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-08-18 21:44:52,211 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-08-18 21:44:52,212 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1
[2020-08-18 21:44:52,213 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-08-18 21:44:52,213 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-08-18 21:44:52,213 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-08-18 21:44:52,213 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-08-18 21:44:52,213 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-08-18 21:44:52,214 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-08-18 21:44:52,214 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-08-18 21:44:52,214 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-08-18 21:44:52,214 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-08-18 21:44:52,214 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-08-18 21:44:52,215 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-08-18 21:44:52,215 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-08-18 21:44:52,215 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-08-18 21:44:52,215 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-08-18 21:44:52,216 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-08-18 21:44:52,216 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-08-18 21:44:52,216 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-08-18 21:44:52,216 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-08-18 21:44:52,216 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-08-18 21:44:52,216 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-08-18 21:44:52,217 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-08-18 21:44:52,217 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry
[2020-08-18 21:44:52,217 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-08-18 21:44:52,217 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-08-18 21:44:52,217 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-08-18 21:44:52,217 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-08-18 21:44:52,218 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-08-18 21:44:52,218 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-08-18 21:44:52,219 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-08-18 21:44:52,219 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-08-18 21:44:52,220 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-08-18 21:44:52,220 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-08-18 21:44:52,220 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-08-18 21:44:52,220 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-08-18 21:44:52,221 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-08-18 21:44:52,221 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-08-18 21:44:52,221 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-08-18 21:44:52,221 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base
[2020-08-18 21:44:52,221 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterLevel
[2020-08-18 21:44:52,221 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor
[2020-08-18 21:44:52,221 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-08-18 21:44:52,222 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-08-18 21:44:52,222 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-08-18 21:44:52,222 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-08-18 21:44:53,480 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-08-18 21:44:53,480 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-08-18 21:44:53,485 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:44:53 BoogieIcfgContainer
[2020-08-18 21:44:53,486 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-08-18 21:44:53,487 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-08-18 21:44:53,487 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-08-18 21:44:53,490 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-08-18 21:44:53,491 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 09:44:51" (1/3) ...
[2020-08-18 21:44:53,492 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5622f28f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:44:53, skipping insertion in model container
[2020-08-18 21:44:53,492 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:44:52" (2/3) ...
[2020-08-18 21:44:53,492 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5622f28f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:44:53, skipping insertion in model container
[2020-08-18 21:44:53,492 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:44:53" (3/3) ...
[2020-08-18 21:44:53,494 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec3_product25.cil.c
[2020-08-18 21:44:53,505 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-08-18 21:44:53,514 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-08-18 21:44:53,525 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-08-18 21:44:53,548 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-08-18 21:44:53,549 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-08-18 21:44:53,549 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-08-18 21:44:53,549 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-08-18 21:44:53,549 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-08-18 21:44:53,550 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-08-18 21:44:53,550 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-08-18 21:44:53,550 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-08-18 21:44:53,573 INFO  L276                IsEmpty]: Start isEmpty. Operand 164 states.
[2020-08-18 21:44:53,583 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2020-08-18 21:44:53,583 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 21:44:53,584 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]
[2020-08-18 21:44:53,585 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:44:53,591 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:44:53,592 INFO  L82        PathProgramCache]: Analyzing trace with hash -950316372, now seen corresponding path program 1 times
[2020-08-18 21:44:53,601 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:44:53,601 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786604939]
[2020-08-18 21:44:53,602 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:44:53,867 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:54,334 WARN  L193               SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 21:44:54,336 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 21:44:54,346 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:54,383 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 21:44:54,384 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:54,389 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 21:44:54,390 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:54,391 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 21:44:54,398 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:54,400 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 21:44:54,401 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:54,403 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32
[2020-08-18 21:44:54,406 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:54,408 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2020-08-18 21:44:54,409 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:54,419 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44
[2020-08-18 21:44:54,420 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:54,445 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 21:44:54,446 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786604939]
[2020-08-18 21:44:54,449 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 21:44:54,450 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-08-18 21:44:54,451 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639469475]
[2020-08-18 21:44:54,457 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-08-18 21:44:54,457 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 21:44:54,472 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-08-18 21:44:54,473 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-08-18 21:44:54,476 INFO  L87              Difference]: Start difference. First operand 164 states. Second operand 3 states.
[2020-08-18 21:44:55,573 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 21:44:55,573 INFO  L93              Difference]: Finished difference Result 259 states and 341 transitions.
[2020-08-18 21:44:55,574 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-08-18 21:44:55,575 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 52
[2020-08-18 21:44:55,576 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 21:44:55,590 INFO  L225             Difference]: With dead ends: 259
[2020-08-18 21:44:55,590 INFO  L226             Difference]: Without dead ends: 140
[2020-08-18 21:44:55,595 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-08-18 21:44:55,613 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 140 states.
[2020-08-18 21:44:55,674 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 110.
[2020-08-18 21:44:55,675 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 110 states.
[2020-08-18 21:44:55,677 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 128 transitions.
[2020-08-18 21:44:55,679 INFO  L78                 Accepts]: Start accepts. Automaton has 110 states and 128 transitions. Word has length 52
[2020-08-18 21:44:55,680 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 21:44:55,680 INFO  L479      AbstractCegarLoop]: Abstraction has 110 states and 128 transitions.
[2020-08-18 21:44:55,680 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-08-18 21:44:55,680 INFO  L276                IsEmpty]: Start isEmpty. Operand 110 states and 128 transitions.
[2020-08-18 21:44:55,687 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 54
[2020-08-18 21:44:55,687 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 21:44:55,687 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]
[2020-08-18 21:44:55,688 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-08-18 21:44:55,688 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:44:55,688 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:44:55,689 INFO  L82        PathProgramCache]: Analyzing trace with hash 878728997, now seen corresponding path program 1 times
[2020-08-18 21:44:55,689 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:44:55,689 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78948845]
[2020-08-18 21:44:55,689 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:44:55,737 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:56,035 WARN  L193               SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 21:44:56,036 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 21:44:56,041 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:56,059 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 21:44:56,060 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:56,061 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 21:44:56,062 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:56,063 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 21:44:56,063 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:56,064 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 21:44:56,065 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:56,066 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33
[2020-08-18 21:44:56,066 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:56,068 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39
[2020-08-18 21:44:56,068 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:56,069 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2020-08-18 21:44:56,070 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:56,077 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 21:44:56,078 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78948845]
[2020-08-18 21:44:56,078 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 21:44:56,078 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-08-18 21:44:56,079 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530164245]
[2020-08-18 21:44:56,080 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-08-18 21:44:56,081 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 21:44:56,081 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-08-18 21:44:56,081 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-08-18 21:44:56,081 INFO  L87              Difference]: Start difference. First operand 110 states and 128 transitions. Second operand 4 states.
[2020-08-18 21:44:56,506 WARN  L193               SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-18 21:44:57,183 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 21:44:57,184 INFO  L93              Difference]: Finished difference Result 192 states and 232 transitions.
[2020-08-18 21:44:57,185 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-08-18 21:44:57,185 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 53
[2020-08-18 21:44:57,186 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 21:44:57,189 INFO  L225             Difference]: With dead ends: 192
[2020-08-18 21:44:57,189 INFO  L226             Difference]: Without dead ends: 124
[2020-08-18 21:44:57,190 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
[2020-08-18 21:44:57,191 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 124 states.
[2020-08-18 21:44:57,221 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 101.
[2020-08-18 21:44:57,222 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 101 states.
[2020-08-18 21:44:57,223 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 116 transitions.
[2020-08-18 21:44:57,223 INFO  L78                 Accepts]: Start accepts. Automaton has 101 states and 116 transitions. Word has length 53
[2020-08-18 21:44:57,223 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 21:44:57,223 INFO  L479      AbstractCegarLoop]: Abstraction has 101 states and 116 transitions.
[2020-08-18 21:44:57,223 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-08-18 21:44:57,224 INFO  L276                IsEmpty]: Start isEmpty. Operand 101 states and 116 transitions.
[2020-08-18 21:44:57,225 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 58
[2020-08-18 21:44:57,226 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 21:44:57,226 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]
[2020-08-18 21:44:57,226 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-08-18 21:44:57,226 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:44:57,226 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:44:57,227 INFO  L82        PathProgramCache]: Analyzing trace with hash 1316004347, now seen corresponding path program 1 times
[2020-08-18 21:44:57,227 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:44:57,227 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883308178]
[2020-08-18 21:44:57,227 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:44:57,257 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:57,552 WARN  L193               SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 21:44:57,553 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 21:44:57,566 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:57,600 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 21:44:57,601 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:57,602 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 21:44:57,603 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:57,605 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 21:44:57,606 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:57,621 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 21:44:57,622 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:57,623 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:44:57,624 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:57,625 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43
[2020-08-18 21:44:57,625 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:57,627 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49
[2020-08-18 21:44:57,628 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:44:57,639 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 21:44:57,640 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883308178]
[2020-08-18 21:44:57,640 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 21:44:57,640 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-08-18 21:44:57,641 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141821644]
[2020-08-18 21:44:57,642 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-08-18 21:44:57,643 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 21:44:57,646 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-08-18 21:44:57,646 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2020-08-18 21:44:57,646 INFO  L87              Difference]: Start difference. First operand 101 states and 116 transitions. Second operand 8 states.
[2020-08-18 21:44:58,011 WARN  L193               SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-18 21:44:58,346 WARN  L193               SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 21:44:58,597 WARN  L193               SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 21:44:58,832 WARN  L193               SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 21:44:59,811 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 21:44:59,811 INFO  L93              Difference]: Finished difference Result 201 states and 246 transitions.
[2020-08-18 21:44:59,816 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-08-18 21:44:59,816 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 57
[2020-08-18 21:44:59,817 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 21:44:59,819 INFO  L225             Difference]: With dead ends: 201
[2020-08-18 21:44:59,819 INFO  L226             Difference]: Without dead ends: 124
[2020-08-18 21:44:59,820 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-08-18 21:44:59,821 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 124 states.
[2020-08-18 21:44:59,848 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 101.
[2020-08-18 21:44:59,849 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 101 states.
[2020-08-18 21:44:59,850 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 115 transitions.
[2020-08-18 21:44:59,850 INFO  L78                 Accepts]: Start accepts. Automaton has 101 states and 115 transitions. Word has length 57
[2020-08-18 21:44:59,850 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 21:44:59,850 INFO  L479      AbstractCegarLoop]: Abstraction has 101 states and 115 transitions.
[2020-08-18 21:44:59,851 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-08-18 21:44:59,851 INFO  L276                IsEmpty]: Start isEmpty. Operand 101 states and 115 transitions.
[2020-08-18 21:44:59,852 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 66
[2020-08-18 21:44:59,852 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 21:44:59,853 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]
[2020-08-18 21:44:59,853 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-08-18 21:44:59,853 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:44:59,853 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:44:59,853 INFO  L82        PathProgramCache]: Analyzing trace with hash -402432006, now seen corresponding path program 1 times
[2020-08-18 21:44:59,854 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:44:59,854 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271614153]
[2020-08-18 21:44:59,854 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:44:59,882 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:45:00,195 WARN  L193               SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 21:45:00,197 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 21:45:00,212 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:45:00,240 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 21:45:00,241 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:45:00,256 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 21:45:00,257 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:45:00,261 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 21:45:00,262 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:45:00,263 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 21:45:00,264 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:45:00,273 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35
[2020-08-18 21:45:00,274 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:45:00,276 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 21:45:00,276 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:45:00,278 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2020-08-18 21:45:00,278 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:45:00,281 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2020-08-18 21:45:00,284 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:45:00,296 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57
[2020-08-18 21:45:00,297 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:45:00,307 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 21:45:00,308 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271614153]
[2020-08-18 21:45:00,308 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 21:45:00,308 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-08-18 21:45:00,308 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088240823]
[2020-08-18 21:45:00,309 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-08-18 21:45:00,309 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 21:45:00,309 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-08-18 21:45:00,310 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2020-08-18 21:45:00,310 INFO  L87              Difference]: Start difference. First operand 101 states and 115 transitions. Second operand 8 states.
[2020-08-18 21:45:00,647 WARN  L193               SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-18 21:45:01,860 WARN  L193               SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 21:45:02,167 WARN  L193               SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 21:45:02,467 WARN  L193               SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 21:45:02,734 WARN  L193               SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-18 21:45:03,266 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 21:45:03,266 INFO  L93              Difference]: Finished difference Result 299 states and 390 transitions.
[2020-08-18 21:45:03,270 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-08-18 21:45:03,271 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 65
[2020-08-18 21:45:03,271 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 21:45:03,274 INFO  L225             Difference]: With dead ends: 299
[2020-08-18 21:45:03,275 INFO  L226             Difference]: Without dead ends: 222
[2020-08-18 21:45:03,276 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182
[2020-08-18 21:45:03,277 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 222 states.
[2020-08-18 21:45:03,324 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 176.
[2020-08-18 21:45:03,324 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 176 states.
[2020-08-18 21:45:03,326 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 207 transitions.
[2020-08-18 21:45:03,326 INFO  L78                 Accepts]: Start accepts. Automaton has 176 states and 207 transitions. Word has length 65
[2020-08-18 21:45:03,327 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 21:45:03,327 INFO  L479      AbstractCegarLoop]: Abstraction has 176 states and 207 transitions.
[2020-08-18 21:45:03,327 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-08-18 21:45:03,327 INFO  L276                IsEmpty]: Start isEmpty. Operand 176 states and 207 transitions.
[2020-08-18 21:45:03,329 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 74
[2020-08-18 21:45:03,330 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 21:45:03,330 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]
[2020-08-18 21:45:03,330 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-08-18 21:45:03,330 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:45:03,330 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:45:03,331 INFO  L82        PathProgramCache]: Analyzing trace with hash -643922522, now seen corresponding path program 1 times
[2020-08-18 21:45:03,331 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:45:03,331 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876007127]
[2020-08-18 21:45:03,331 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:45:03,356 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:45:03,611 WARN  L193               SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 21:45:03,612 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 21:45:03,637 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:45:03,665 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 21:45:03,669 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:45:03,671 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 21:45:03,671 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:45:03,675 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 21:45:03,676 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:45:03,678 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 21:45:03,678 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:45:03,700 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28
[2020-08-18 21:45:03,702 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:45:03,704 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2020-08-18 21:45:03,706 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:45:03,714 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43
[2020-08-18 21:45:03,715 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:45:03,716 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 21:45:03,716 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:45:03,718 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53
[2020-08-18 21:45:03,719 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:45:03,721 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59
[2020-08-18 21:45:03,722 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:45:03,723 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65
[2020-08-18 21:45:03,724 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:45:03,734 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 21:45:03,735 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876007127]
[2020-08-18 21:45:03,736 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 21:45:03,738 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-08-18 21:45:03,739 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207902504]
[2020-08-18 21:45:03,740 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-08-18 21:45:03,741 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 21:45:03,741 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-08-18 21:45:03,741 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-08-18 21:45:03,742 INFO  L87              Difference]: Start difference. First operand 176 states and 207 transitions. Second operand 6 states.
[2020-08-18 21:45:04,103 WARN  L193               SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-18 21:45:04,650 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 21:45:04,650 INFO  L93              Difference]: Finished difference Result 289 states and 355 transitions.
[2020-08-18 21:45:04,651 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-08-18 21:45:04,651 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 73
[2020-08-18 21:45:04,652 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 21:45:04,654 INFO  L225             Difference]: With dead ends: 289
[2020-08-18 21:45:04,654 INFO  L226             Difference]: Without dead ends: 137
[2020-08-18 21:45:04,660 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72
[2020-08-18 21:45:04,661 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 137 states.
[2020-08-18 21:45:04,690 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 125.
[2020-08-18 21:45:04,690 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 125 states.
[2020-08-18 21:45:04,691 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 140 transitions.
[2020-08-18 21:45:04,691 INFO  L78                 Accepts]: Start accepts. Automaton has 125 states and 140 transitions. Word has length 73
[2020-08-18 21:45:04,692 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 21:45:04,692 INFO  L479      AbstractCegarLoop]: Abstraction has 125 states and 140 transitions.
[2020-08-18 21:45:04,692 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-08-18 21:45:04,692 INFO  L276                IsEmpty]: Start isEmpty. Operand 125 states and 140 transitions.
[2020-08-18 21:45:04,693 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 70
[2020-08-18 21:45:04,693 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 21:45:04,693 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]
[2020-08-18 21:45:04,694 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-08-18 21:45:04,694 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:45:04,694 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:45:04,712 INFO  L82        PathProgramCache]: Analyzing trace with hash 1866072192, now seen corresponding path program 1 times
[2020-08-18 21:45:04,712 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:45:04,712 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791315300]
[2020-08-18 21:45:04,713 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:45:04,782 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-08-18 21:45:04,786 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-08-18 21:45:04,786 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-08-18 21:45:04,792 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-08-18 21:45:04,825 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 09:45:04 BoogieIcfgContainer
[2020-08-18 21:45:04,825 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-08-18 21:45:04,828 INFO  L168              Benchmark]: Toolchain (without parser) took 13564.05 ms. Allocated memory was 147.8 MB in the beginning and 395.3 MB in the end (delta: 247.5 MB). Free memory was 102.7 MB in the beginning and 348.7 MB in the end (delta: -246.0 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB.
[2020-08-18 21:45:04,829 INFO  L168              Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 147.8 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-08-18 21:45:04,831 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 759.49 ms. Allocated memory was 147.8 MB in the beginning and 208.1 MB in the end (delta: 60.3 MB). Free memory was 102.5 MB in the beginning and 174.9 MB in the end (delta: -72.4 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB.
[2020-08-18 21:45:04,831 INFO  L168              Benchmark]: Boogie Preprocessor took 89.96 ms. Allocated memory is still 208.1 MB. Free memory was 174.9 MB in the beginning and 170.8 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB.
[2020-08-18 21:45:04,832 INFO  L168              Benchmark]: RCFGBuilder took 1371.36 ms. Allocated memory was 208.1 MB in the beginning and 232.8 MB in the end (delta: 24.6 MB). Free memory was 170.8 MB in the beginning and 191.6 MB in the end (delta: -20.8 MB). Peak memory consumption was 81.7 MB. Max. memory is 7.1 GB.
[2020-08-18 21:45:04,833 INFO  L168              Benchmark]: TraceAbstraction took 11338.46 ms. Allocated memory was 232.8 MB in the beginning and 395.3 MB in the end (delta: 162.5 MB). Free memory was 191.6 MB in the beginning and 348.7 MB in the end (delta: -157.1 MB). Peak memory consumption was 5.5 MB. Max. memory is 7.1 GB.
[2020-08-18 21:45:04,842 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.18 ms. Allocated memory is still 147.8 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 759.49 ms. Allocated memory was 147.8 MB in the beginning and 208.1 MB in the end (delta: 60.3 MB). Free memory was 102.5 MB in the beginning and 174.9 MB in the end (delta: -72.4 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 89.96 ms. Allocated memory is still 208.1 MB. Free memory was 174.9 MB in the beginning and 170.8 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 1371.36 ms. Allocated memory was 208.1 MB in the beginning and 232.8 MB in the end (delta: 24.6 MB). Free memory was 170.8 MB in the beginning and 191.6 MB in the end (delta: -20.8 MB). Peak memory consumption was 81.7 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 11338.46 ms. Allocated memory was 232.8 MB in the beginning and 395.3 MB in the end (delta: 162.5 MB). Free memory was 191.6 MB in the beginning and 348.7 MB in the end (delta: -157.1 MB). Peak memory consumption was 5.5 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 82]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L256]              static struct __ACC__ERR *head  =    (struct __ACC__ERR *)0;
[L458]              int waterLevel  =    1;
[L459]              int methaneLevelCritical  =    0;
[L585]              int cleanupTimeShifts  =    4;
[L686]              int pumpRunning  =    0;
[L687]              int systemActive  =    1;
[L661]              int retValue_acc ;
[L662]              int tmp ;
[L666]  FCALL       select_helpers()
[L667]  FCALL       select_features()
[L668]  CALL, EXPR  valid_product()
[L576]              int retValue_acc ;
[L579]              retValue_acc = 1
[L580]              return (retValue_acc);
[L668]  RET, EXPR   valid_product()
[L668]              tmp = valid_product()
[L670]  COND TRUE   \read(tmp)
[L672]  FCALL       setup()
[L673]  CALL        runTest()
[L655]  CALL        test()
[L857]              int splverifierCounter ;
[L858]              int tmp ;
[L859]              int tmp___0 ;
[L860]              int tmp___1 ;
[L861]              int tmp___2 ;
[L864]              splverifierCounter = 0
[L866]  COND TRUE   1
[L868]  COND TRUE   splverifierCounter < 4
[L874]              tmp = __VERIFIER_nondet_int()
[L876]  COND TRUE   \read(tmp)
[L878]  CALL        waterRise()
[L476]  COND TRUE   waterLevel < 2
[L477]              waterLevel = waterLevel + 1
[L878]  RET         waterRise()
[L884]              tmp___0 = __VERIFIER_nondet_int()
[L886]  COND FALSE  !(\read(tmp___0))
[L894]              tmp___2 = __VERIFIER_nondet_int()
[L896]  COND TRUE   \read(tmp___2)
[L909]  CALL        timeShift()
[L693]  COND FALSE  !(\read(pumpRunning))
[L700]  COND TRUE   \read(systemActive)
[L702]  CALL        processEnvironment()
[L722]              int tmp ;
[L725]  COND FALSE  !(\read(pumpRunning))
[L740]  FCALL       processEnvironment__wrappee__base()
[L702]  RET         processEnvironment()
[L708]  CALL        __utac_acc__Specification3_spec__1()
[L45]               int tmp ;
[L46]               int tmp___0 ;
[L47]               int tmp___1 ;
[L51]   CALL, EXPR  isMethaneLevelCritical()
[L497]              int retValue_acc ;
[L500]              retValue_acc = methaneLevelCritical
[L501]              return (retValue_acc);
[L51]   RET, EXPR   isMethaneLevelCritical()
[L51]               tmp = isMethaneLevelCritical()
[L53]   COND FALSE  !(\read(tmp))
[L57]   CALL, EXPR  getWaterLevel()
[L529]              int retValue_acc ;
[L532]              retValue_acc = waterLevel
[L533]              return (retValue_acc);
[L57]   RET, EXPR   getWaterLevel()
[L57]               tmp___0 = getWaterLevel()
[L59]   COND TRUE   tmp___0 == 2
[L61]   CALL, EXPR  isPumpRunning()
[L792]              int retValue_acc ;
[L795]              retValue_acc = pumpRunning
[L796]              return (retValue_acc);
[L61]   RET, EXPR   isPumpRunning()
[L61]               tmp___1 = isPumpRunning()
[L63]   COND FALSE  !(\read(tmp___1))
[L67]   CALL        __automaton_fail()
[L82]               __VERIFIER_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 38 procedures, 224 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 8.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 444 SDtfs, 622 SDslu, 243 SDs, 0 SdLazy, 1325 SolverSat, 355 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=176occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 134 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 369 NumberOfCodeBlocks, 369 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 295 ConstructedInterpolants, 0 QuantifiedInterpolants, 84162 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...