/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product53.cil.c


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


This is Ultimate 0.1.25-d623d84
[2020-07-20 13:01:00,917 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-07-20 13:01:00,919 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-07-20 13:01:00,939 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-07-20 13:01:00,939 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-07-20 13:01:00,941 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-07-20 13:01:00,943 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-07-20 13:01:00,953 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-07-20 13:01:00,958 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-07-20 13:01:00,961 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-07-20 13:01:00,962 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-07-20 13:01:00,963 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-07-20 13:01:00,963 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-07-20 13:01:00,965 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-07-20 13:01:00,967 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-07-20 13:01:00,969 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-07-20 13:01:00,970 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-07-20 13:01:00,971 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-07-20 13:01:00,972 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-07-20 13:01:00,977 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-07-20 13:01:00,982 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-07-20 13:01:00,985 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-07-20 13:01:00,986 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-07-20 13:01:00,987 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-07-20 13:01:00,990 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-07-20 13:01:00,990 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-07-20 13:01:00,990 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-07-20 13:01:00,992 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-07-20 13:01:00,993 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-07-20 13:01:00,994 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-07-20 13:01:00,994 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-07-20 13:01:00,995 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-07-20 13:01:00,996 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-07-20 13:01:00,996 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-07-20 13:01:00,997 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-07-20 13:01:00,998 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-07-20 13:01:00,998 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-07-20 13:01:00,999 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-07-20 13:01:00,999 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-07-20 13:01:00,999 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-07-20 13:01:01,001 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-07-20 13:01:01,001 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-07-20 13:01:01,036 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-07-20 13:01:01,037 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-20 13:01:01,041 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-07-20 13:01:01,041 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-07-20 13:01:01,041 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-07-20 13:01:01,042 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-20 13:01:01,042 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-07-20 13:01:01,042 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-07-20 13:01:01,042 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-07-20 13:01:01,042 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-07-20 13:01:01,043 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-07-20 13:01:01,043 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-20 13:01:01,043 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-07-20 13:01:01,044 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-07-20 13:01:01,044 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-07-20 13:01:01,044 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-07-20 13:01:01,044 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-07-20 13:01:01,045 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-20 13:01:01,045 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-07-20 13:01:01,045 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-07-20 13:01:01,045 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-07-20 13:01:01,046 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-20 13:01:01,046 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-20 13:01:01,046 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-07-20 13:01:01,046 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-07-20 13:01:01,046 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-07-20 13:01:01,047 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:01:01,047 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-20 13:01:01,047 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-07-20 13:01:01,047 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 -> FPandBPonlyIfFpWasNotPerfect
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4
[2020-07-20 13:01:01,326 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-20 13:01:01,343 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-20 13:01:01,347 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-20 13:01:01,348 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-07-20 13:01:01,350 INFO  L275        PluginConnector]: CDTParser initialized
[2020-07-20 13:01:01,352 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product53.cil.c
[2020-07-20 13:01:01,426 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17df7582d/da4e668a3a8c46fe8c92c9dfa7743e0d/FLAGfbdcc46d5
[2020-07-20 13:01:02,004 INFO  L306              CDTParser]: Found 1 translation units.
[2020-07-20 13:01:02,005 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product53.cil.c
[2020-07-20 13:01:02,015 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17df7582d/da4e668a3a8c46fe8c92c9dfa7743e0d/FLAGfbdcc46d5
[2020-07-20 13:01:02,268 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17df7582d/da4e668a3a8c46fe8c92c9dfa7743e0d
[2020-07-20 13:01:02,277 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-20 13:01:02,279 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-20 13:01:02,280 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-20 13:01:02,280 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-20 13:01:02,284 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-20 13:01:02,285 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:01:02" (1/1) ...
[2020-07-20 13:01:02,288 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33761369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:01:02, skipping insertion in model container
[2020-07-20 13:01:02,288 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:01:02" (1/1) ...
[2020-07-20 13:01:02,296 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-07-20 13:01:02,361 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-07-20 13:01:02,890 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-07-20 13:01:02,911 INFO  L203         MainTranslator]: Completed pre-run
[2020-07-20 13:01:03,004 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-07-20 13:01:03,040 INFO  L208         MainTranslator]: Completed translation
[2020-07-20 13:01:03,041 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:01:03 WrapperNode
[2020-07-20 13:01:03,041 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-20 13:01:03,042 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-20 13:01:03,042 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-20 13:01:03,042 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-07-20 13:01:03,055 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:01:03" (1/1) ...
[2020-07-20 13:01:03,056 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:01:03" (1/1) ...
[2020-07-20 13:01:03,075 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:01:03" (1/1) ...
[2020-07-20 13:01:03,075 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:01:03" (1/1) ...
[2020-07-20 13:01:03,111 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:01:03" (1/1) ...
[2020-07-20 13:01:03,123 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:01:03" (1/1) ...
[2020-07-20 13:01:03,128 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:01:03" (1/1) ...
[2020-07-20 13:01:03,136 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-20 13:01:03,137 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-20 13:01:03,137 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-07-20 13:01:03,137 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-07-20 13:01:03,138 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:01:03" (1/1) ...
No working directory specified, using /storage/repos/ultimate/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
[2020-07-20 13:01:03,211 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-20 13:01:03,211 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-20 13:01:03,211 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-07-20 13:01:03,211 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1
[2020-07-20 13:01:03,212 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-07-20 13:01:03,212 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-07-20 13:01:03,212 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-07-20 13:01:03,212 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-07-20 13:01:03,212 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-07-20 13:01:03,212 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-07-20 13:01:03,213 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-07-20 13:01:03,213 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-07-20 13:01:03,213 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-07-20 13:01:03,213 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-07-20 13:01:03,213 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-07-20 13:01:03,213 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-07-20 13:01:03,214 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-07-20 13:01:03,214 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base
[2020-07-20 13:01:03,214 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor
[2020-07-20 13:01:03,214 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor
[2020-07-20 13:01:03,214 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-07-20 13:01:03,214 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-07-20 13:01:03,215 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-07-20 13:01:03,215 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-07-20 13:01:03,215 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-07-20 13:01:03,215 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-07-20 13:01:03,215 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterLevel
[2020-07-20 13:01:03,215 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterLevel
[2020-07-20 13:01:03,216 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-07-20 13:01:03,216 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-07-20 13:01:03,216 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-07-20 13:01:03,216 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-07-20 13:01:03,216 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-07-20 13:01:03,216 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-07-20 13:01:03,217 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-07-20 13:01:03,217 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-07-20 13:01:03,217 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-07-20 13:01:03,217 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-07-20 13:01:03,217 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-07-20 13:01:03,217 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry
[2020-07-20 13:01:03,217 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry
[2020-07-20 13:01:03,218 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-20 13:01:03,218 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-07-20 13:01:03,218 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-07-20 13:01:03,218 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-07-20 13:01:03,218 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-07-20 13:01:03,218 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-07-20 13:01:03,218 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1
[2020-07-20 13:01:03,219 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-07-20 13:01:03,219 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-07-20 13:01:03,219 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-07-20 13:01:03,219 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-07-20 13:01:03,219 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-07-20 13:01:03,219 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-07-20 13:01:03,219 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-07-20 13:01:03,220 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-07-20 13:01:03,220 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-07-20 13:01:03,220 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-07-20 13:01:03,220 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-07-20 13:01:03,220 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-07-20 13:01:03,220 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-07-20 13:01:03,221 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-07-20 13:01:03,221 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-07-20 13:01:03,221 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-07-20 13:01:03,221 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-07-20 13:01:03,221 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-07-20 13:01:03,221 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-07-20 13:01:03,222 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-07-20 13:01:03,222 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-07-20 13:01:03,222 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-07-20 13:01:03,222 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-07-20 13:01:03,222 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-07-20 13:01:03,222 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-07-20 13:01:03,223 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-07-20 13:01:03,223 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-07-20 13:01:03,223 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-07-20 13:01:03,223 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-07-20 13:01:03,223 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-07-20 13:01:03,223 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-07-20 13:01:03,224 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-07-20 13:01:03,224 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry
[2020-07-20 13:01:03,224 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry
[2020-07-20 13:01:03,224 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-07-20 13:01:03,224 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-07-20 13:01:03,224 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-07-20 13:01:03,224 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base
[2020-07-20 13:01:03,225 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterLevel
[2020-07-20 13:01:03,225 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor
[2020-07-20 13:01:03,225 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterLevel
[2020-07-20 13:01:03,225 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor
[2020-07-20 13:01:03,225 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-07-20 13:01:03,225 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-07-20 13:01:03,226 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-07-20 13:01:03,226 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-20 13:01:03,226 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-07-20 13:01:03,226 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-20 13:01:04,471 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-20 13:01:04,472 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-07-20 13:01:04,481 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:01:04 BoogieIcfgContainer
[2020-07-20 13:01:04,481 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-20 13:01:04,483 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-20 13:01:04,483 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-07-20 13:01:04,486 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-07-20 13:01:04,486 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:01:02" (1/3) ...
[2020-07-20 13:01:04,487 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ed0244 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:01:04, skipping insertion in model container
[2020-07-20 13:01:04,487 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:01:03" (2/3) ...
[2020-07-20 13:01:04,487 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ed0244 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:01:04, skipping insertion in model container
[2020-07-20 13:01:04,487 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:01:04" (3/3) ...
[2020-07-20 13:01:04,489 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec1_product53.cil.c
[2020-07-20 13:01:04,499 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION
[2020-07-20 13:01:04,510 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-07-20 13:01:04,526 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-07-20 13:01:04,556 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-07-20 13:01:04,556 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-07-20 13:01:04,556 INFO  L377      AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect
[2020-07-20 13:01:04,556 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-20 13:01:04,557 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-20 13:01:04,557 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-07-20 13:01:04,557 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-20 13:01:04,557 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-20 13:01:04,577 INFO  L276                IsEmpty]: Start isEmpty. Operand 186 states.
[2020-07-20 13:01:04,586 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2020-07-20 13:01:04,586 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-20 13:01:04,587 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]
[2020-07-20 13:01:04,588 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 13:01:04,593 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 13:01:04,593 INFO  L82        PathProgramCache]: Analyzing trace with hash 1737906003, now seen corresponding path program 1 times
[2020-07-20 13:01:04,602 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 13:01:04,602 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412335070]
[2020-07-20 13:01:04,603 INFO  L95    rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:01:05,151 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s)
[2020-07-20 13:01:05,152 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 13:01:05,159 INFO  L263         TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 1 conjunts are in the unsatisfiable core
[2020-07-20 13:01:05,167 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 13:01:05,196 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 13:01:05,197 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 13:01:05,198 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412335070]
[2020-07-20 13:01:05,199 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 13:01:05,199 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2020-07-20 13:01:05,200 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775751608]
[2020-07-20 13:01:05,205 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 2 states
[2020-07-20 13:01:05,206 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 13:01:05,220 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2020-07-20 13:01:05,221 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-07-20 13:01:05,223 INFO  L87              Difference]: Start difference. First operand 186 states. Second operand 2 states.
[2020-07-20 13:01:05,270 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 13:01:05,271 INFO  L93              Difference]: Finished difference Result 286 states and 357 transitions.
[2020-07-20 13:01:05,271 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2020-07-20 13:01:05,272 INFO  L78                 Accepts]: Start accepts. Automaton has 2 states. Word has length 46
[2020-07-20 13:01:05,273 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 13:01:05,286 INFO  L225             Difference]: With dead ends: 286
[2020-07-20 13:01:05,286 INFO  L226             Difference]: Without dead ends: 143
[2020-07-20 13:01:05,291 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-07-20 13:01:05,310 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 143 states.
[2020-07-20 13:01:05,346 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143.
[2020-07-20 13:01:05,347 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 143 states.
[2020-07-20 13:01:05,350 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 170 transitions.
[2020-07-20 13:01:05,352 INFO  L78                 Accepts]: Start accepts. Automaton has 143 states and 170 transitions. Word has length 46
[2020-07-20 13:01:05,353 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-20 13:01:05,353 INFO  L479      AbstractCegarLoop]: Abstraction has 143 states and 170 transitions.
[2020-07-20 13:01:05,353 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 2 states.
[2020-07-20 13:01:05,353 INFO  L276                IsEmpty]: Start isEmpty. Operand 143 states and 170 transitions.
[2020-07-20 13:01:05,357 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2020-07-20 13:01:05,357 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-20 13:01:05,358 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]
[2020-07-20 13:01:05,570 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:01:05,571 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 13:01:05,571 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 13:01:05,572 INFO  L82        PathProgramCache]: Analyzing trace with hash 1744597296, now seen corresponding path program 1 times
[2020-07-20 13:01:05,572 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 13:01:05,572 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642488773]
[2020-07-20 13:01:05,572 INFO  L95    rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:01:06,043 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s)
[2020-07-20 13:01:06,044 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 13:01:06,049 INFO  L263         TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 2 conjunts are in the unsatisfiable core
[2020-07-20 13:01:06,053 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 13:01:06,088 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 13:01:06,088 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 13:01:06,088 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642488773]
[2020-07-20 13:01:06,089 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 13:01:06,089 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-07-20 13:01:06,089 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223188056]
[2020-07-20 13:01:06,091 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-07-20 13:01:06,091 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 13:01:06,092 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-07-20 13:01:06,092 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-20 13:01:06,092 INFO  L87              Difference]: Start difference. First operand 143 states and 170 transitions. Second operand 3 states.
[2020-07-20 13:01:06,116 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 13:01:06,117 INFO  L93              Difference]: Finished difference Result 235 states and 279 transitions.
[2020-07-20 13:01:06,117 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-07-20 13:01:06,117 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 47
[2020-07-20 13:01:06,118 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 13:01:06,123 INFO  L225             Difference]: With dead ends: 235
[2020-07-20 13:01:06,124 INFO  L226             Difference]: Without dead ends: 134
[2020-07-20 13:01:06,126 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-20 13:01:06,127 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 134 states.
[2020-07-20 13:01:06,151 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134.
[2020-07-20 13:01:06,152 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 134 states.
[2020-07-20 13:01:06,158 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 158 transitions.
[2020-07-20 13:01:06,159 INFO  L78                 Accepts]: Start accepts. Automaton has 134 states and 158 transitions. Word has length 47
[2020-07-20 13:01:06,159 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-20 13:01:06,159 INFO  L479      AbstractCegarLoop]: Abstraction has 134 states and 158 transitions.
[2020-07-20 13:01:06,160 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-07-20 13:01:06,160 INFO  L276                IsEmpty]: Start isEmpty. Operand 134 states and 158 transitions.
[2020-07-20 13:01:06,163 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2020-07-20 13:01:06,166 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-20 13:01:06,167 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]
[2020-07-20 13:01:06,380 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:01:06,381 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 13:01:06,382 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 13:01:06,382 INFO  L82        PathProgramCache]: Analyzing trace with hash 1316795497, now seen corresponding path program 1 times
[2020-07-20 13:01:06,383 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 13:01:06,383 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443200781]
[2020-07-20 13:01:06,384 INFO  L95    rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:01:06,800 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s)
[2020-07-20 13:01:06,800 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 13:01:06,805 INFO  L263         TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 2 conjunts are in the unsatisfiable core
[2020-07-20 13:01:06,809 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 13:01:06,831 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 13:01:06,831 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 13:01:06,831 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443200781]
[2020-07-20 13:01:06,832 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 13:01:06,832 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-07-20 13:01:06,832 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967706334]
[2020-07-20 13:01:06,833 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-07-20 13:01:06,833 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 13:01:06,833 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-07-20 13:01:06,834 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-20 13:01:06,834 INFO  L87              Difference]: Start difference. First operand 134 states and 158 transitions. Second operand 3 states.
[2020-07-20 13:01:06,851 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 13:01:06,851 INFO  L93              Difference]: Finished difference Result 244 states and 293 transitions.
[2020-07-20 13:01:06,852 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-07-20 13:01:06,852 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 51
[2020-07-20 13:01:06,853 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 13:01:06,855 INFO  L225             Difference]: With dead ends: 244
[2020-07-20 13:01:06,855 INFO  L226             Difference]: Without dead ends: 134
[2020-07-20 13:01:06,856 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-20 13:01:06,857 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 134 states.
[2020-07-20 13:01:06,870 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134.
[2020-07-20 13:01:06,871 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 134 states.
[2020-07-20 13:01:06,872 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 157 transitions.
[2020-07-20 13:01:06,872 INFO  L78                 Accepts]: Start accepts. Automaton has 134 states and 157 transitions. Word has length 51
[2020-07-20 13:01:06,873 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-20 13:01:06,873 INFO  L479      AbstractCegarLoop]: Abstraction has 134 states and 157 transitions.
[2020-07-20 13:01:06,873 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-07-20 13:01:06,873 INFO  L276                IsEmpty]: Start isEmpty. Operand 134 states and 157 transitions.
[2020-07-20 13:01:06,876 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 70
[2020-07-20 13:01:06,877 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-20 13:01:06,877 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]
[2020-07-20 13:01:07,091 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:01:07,092 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 13:01:07,092 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 13:01:07,093 INFO  L82        PathProgramCache]: Analyzing trace with hash 1654731465, now seen corresponding path program 1 times
[2020-07-20 13:01:07,093 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 13:01:07,093 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804314908]
[2020-07-20 13:01:07,094 INFO  L95    rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:01:07,460 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s)
[2020-07-20 13:01:07,460 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 13:01:07,466 INFO  L263         TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 7 conjunts are in the unsatisfiable core
[2020-07-20 13:01:07,470 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 13:01:07,527 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 13:01:07,527 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 13:01:07,527 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804314908]
[2020-07-20 13:01:07,527 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 13:01:07,528 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-07-20 13:01:07,528 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750055628]
[2020-07-20 13:01:07,528 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-07-20 13:01:07,529 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 13:01:07,529 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-07-20 13:01:07,529 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-07-20 13:01:07,530 INFO  L87              Difference]: Start difference. First operand 134 states and 157 transitions. Second operand 6 states.
[2020-07-20 13:01:08,278 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 13:01:08,278 INFO  L93              Difference]: Finished difference Result 328 states and 401 transitions.
[2020-07-20 13:01:08,279 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-07-20 13:01:08,279 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 69
[2020-07-20 13:01:08,279 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 13:01:08,282 INFO  L225             Difference]: With dead ends: 328
[2020-07-20 13:01:08,282 INFO  L226             Difference]: Without dead ends: 218
[2020-07-20 13:01:08,283 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2020-07-20 13:01:08,284 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 218 states.
[2020-07-20 13:01:08,315 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 203.
[2020-07-20 13:01:08,315 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 203 states.
[2020-07-20 13:01:08,317 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 229 transitions.
[2020-07-20 13:01:08,317 INFO  L78                 Accepts]: Start accepts. Automaton has 203 states and 229 transitions. Word has length 69
[2020-07-20 13:01:08,318 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-20 13:01:08,318 INFO  L479      AbstractCegarLoop]: Abstraction has 203 states and 229 transitions.
[2020-07-20 13:01:08,318 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-07-20 13:01:08,318 INFO  L276                IsEmpty]: Start isEmpty. Operand 203 states and 229 transitions.
[2020-07-20 13:01:08,321 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 84
[2020-07-20 13:01:08,321 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-20 13:01:08,321 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 13:01:08,535 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:01:08,536 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 13:01:08,537 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 13:01:08,537 INFO  L82        PathProgramCache]: Analyzing trace with hash -1727174811, now seen corresponding path program 1 times
[2020-07-20 13:01:08,538 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 13:01:08,538 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86322019]
[2020-07-20 13:01:08,539 INFO  L95    rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:01:08,873 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s)
[2020-07-20 13:01:08,874 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 13:01:08,878 INFO  L263         TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 23 conjunts are in the unsatisfiable core
[2020-07-20 13:01:08,882 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 13:01:08,948 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 13:01:08,948 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 13:01:08,949 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [86322019]
[2020-07-20 13:01:08,949 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 13:01:08,949 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-07-20 13:01:08,950 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375539527]
[2020-07-20 13:01:08,952 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-07-20 13:01:08,952 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 13:01:08,953 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-07-20 13:01:08,953 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2020-07-20 13:01:08,954 INFO  L87              Difference]: Start difference. First operand 203 states and 229 transitions. Second operand 6 states.
[2020-07-20 13:01:09,213 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 13:01:09,213 INFO  L93              Difference]: Finished difference Result 550 states and 641 transitions.
[2020-07-20 13:01:09,216 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-07-20 13:01:09,216 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 83
[2020-07-20 13:01:09,217 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 13:01:09,224 INFO  L225             Difference]: With dead ends: 550
[2020-07-20 13:01:09,224 INFO  L226             Difference]: Without dead ends: 371
[2020-07-20 13:01:09,227 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2020-07-20 13:01:09,229 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 371 states.
[2020-07-20 13:01:09,294 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 367.
[2020-07-20 13:01:09,295 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 367 states.
[2020-07-20 13:01:09,298 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 416 transitions.
[2020-07-20 13:01:09,299 INFO  L78                 Accepts]: Start accepts. Automaton has 367 states and 416 transitions. Word has length 83
[2020-07-20 13:01:09,300 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-20 13:01:09,300 INFO  L479      AbstractCegarLoop]: Abstraction has 367 states and 416 transitions.
[2020-07-20 13:01:09,300 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-07-20 13:01:09,300 INFO  L276                IsEmpty]: Start isEmpty. Operand 367 states and 416 transitions.
[2020-07-20 13:01:09,302 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 88
[2020-07-20 13:01:09,303 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-20 13:01:09,303 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 13:01:09,517 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:01:09,518 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 13:01:09,518 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 13:01:09,519 INFO  L82        PathProgramCache]: Analyzing trace with hash -1108418135, now seen corresponding path program 1 times
[2020-07-20 13:01:09,519 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 13:01:09,519 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389267958]
[2020-07-20 13:01:09,520 INFO  L95    rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:01:10,055 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s)
[2020-07-20 13:01:10,055 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 13:01:10,063 INFO  L263         TraceCheckSpWp]: Trace formula consists of 724 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-07-20 13:01:10,067 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 13:01:10,132 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 13:01:10,132 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 13:01:10,133 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1389267958]
[2020-07-20 13:01:10,133 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 13:01:10,133 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-07-20 13:01:10,133 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698700156]
[2020-07-20 13:01:10,135 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-07-20 13:01:10,135 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 13:01:10,135 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-07-20 13:01:10,135 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2020-07-20 13:01:10,136 INFO  L87              Difference]: Start difference. First operand 367 states and 416 transitions. Second operand 6 states.
[2020-07-20 13:01:10,346 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 13:01:10,347 INFO  L93              Difference]: Finished difference Result 374 states and 424 transitions.
[2020-07-20 13:01:10,348 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-07-20 13:01:10,348 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 87
[2020-07-20 13:01:10,349 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 13:01:10,354 INFO  L225             Difference]: With dead ends: 374
[2020-07-20 13:01:10,354 INFO  L226             Difference]: Without dead ends: 371
[2020-07-20 13:01:10,355 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2020-07-20 13:01:10,356 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 371 states.
[2020-07-20 13:01:10,378 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 367.
[2020-07-20 13:01:10,379 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 367 states.
[2020-07-20 13:01:10,381 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 415 transitions.
[2020-07-20 13:01:10,382 INFO  L78                 Accepts]: Start accepts. Automaton has 367 states and 415 transitions. Word has length 87
[2020-07-20 13:01:10,382 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-20 13:01:10,382 INFO  L479      AbstractCegarLoop]: Abstraction has 367 states and 415 transitions.
[2020-07-20 13:01:10,382 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-07-20 13:01:10,383 INFO  L276                IsEmpty]: Start isEmpty. Operand 367 states and 415 transitions.
[2020-07-20 13:01:10,384 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 89
[2020-07-20 13:01:10,384 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-20 13:01:10,384 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 13:01:10,599 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:01:10,600 INFO  L427      AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 13:01:10,601 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 13:01:10,601 INFO  L82        PathProgramCache]: Analyzing trace with hash 661895326, now seen corresponding path program 1 times
[2020-07-20 13:01:10,601 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 13:01:10,602 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62224417]
[2020-07-20 13:01:10,602 INFO  L95    rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:01:11,064 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s)
[2020-07-20 13:01:11,065 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 13:01:11,070 INFO  L263         TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-07-20 13:01:11,073 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 13:01:11,104 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 13:01:11,104 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 13:01:11,104 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62224417]
[2020-07-20 13:01:11,105 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 13:01:11,105 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-07-20 13:01:11,105 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289618771]
[2020-07-20 13:01:11,106 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-07-20 13:01:11,106 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 13:01:11,106 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-07-20 13:01:11,106 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-07-20 13:01:11,106 INFO  L87              Difference]: Start difference. First operand 367 states and 415 transitions. Second operand 6 states.
[2020-07-20 13:01:11,156 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 13:01:11,156 INFO  L93              Difference]: Finished difference Result 720 states and 826 transitions.
[2020-07-20 13:01:11,157 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-07-20 13:01:11,157 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 88
[2020-07-20 13:01:11,158 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 13:01:11,160 INFO  L225             Difference]: With dead ends: 720
[2020-07-20 13:01:11,160 INFO  L226             Difference]: Without dead ends: 377
[2020-07-20 13:01:11,162 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2020-07-20 13:01:11,163 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 377 states.
[2020-07-20 13:01:11,182 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377.
[2020-07-20 13:01:11,183 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 377 states.
[2020-07-20 13:01:11,185 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 425 transitions.
[2020-07-20 13:01:11,186 INFO  L78                 Accepts]: Start accepts. Automaton has 377 states and 425 transitions. Word has length 88
[2020-07-20 13:01:11,186 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-20 13:01:11,186 INFO  L479      AbstractCegarLoop]: Abstraction has 377 states and 425 transitions.
[2020-07-20 13:01:11,186 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-07-20 13:01:11,186 INFO  L276                IsEmpty]: Start isEmpty. Operand 377 states and 425 transitions.
[2020-07-20 13:01:11,188 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 89
[2020-07-20 13:01:11,188 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-20 13:01:11,188 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 13:01:11,402 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:01:11,403 INFO  L427      AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 13:01:11,403 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 13:01:11,404 INFO  L82        PathProgramCache]: Analyzing trace with hash 936654940, now seen corresponding path program 1 times
[2020-07-20 13:01:11,404 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 13:01:11,405 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158847619]
[2020-07-20 13:01:11,405 INFO  L95    rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:01:11,769 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s)
[2020-07-20 13:01:11,769 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 13:01:11,773 INFO  L263         TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 5 conjunts are in the unsatisfiable core
[2020-07-20 13:01:11,776 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 13:01:11,807 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 13:01:11,808 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 13:01:11,808 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158847619]
[2020-07-20 13:01:11,808 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 13:01:11,808 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-07-20 13:01:11,809 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300866081]
[2020-07-20 13:01:11,809 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-07-20 13:01:11,809 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 13:01:11,809 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-07-20 13:01:11,810 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-07-20 13:01:11,810 INFO  L87              Difference]: Start difference. First operand 377 states and 425 transitions. Second operand 5 states.
[2020-07-20 13:01:11,841 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 13:01:11,841 INFO  L93              Difference]: Finished difference Result 744 states and 860 transitions.
[2020-07-20 13:01:11,842 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-07-20 13:01:11,842 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 88
[2020-07-20 13:01:11,843 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 13:01:11,846 INFO  L225             Difference]: With dead ends: 744
[2020-07-20 13:01:11,846 INFO  L226             Difference]: Without dead ends: 391
[2020-07-20 13:01:11,848 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-07-20 13:01:11,849 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 391 states.
[2020-07-20 13:01:11,871 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 385.
[2020-07-20 13:01:11,871 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 385 states.
[2020-07-20 13:01:11,875 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 433 transitions.
[2020-07-20 13:01:11,876 INFO  L78                 Accepts]: Start accepts. Automaton has 385 states and 433 transitions. Word has length 88
[2020-07-20 13:01:11,876 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-20 13:01:11,877 INFO  L479      AbstractCegarLoop]: Abstraction has 385 states and 433 transitions.
[2020-07-20 13:01:11,877 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-07-20 13:01:11,877 INFO  L276                IsEmpty]: Start isEmpty. Operand 385 states and 433 transitions.
[2020-07-20 13:01:11,881 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 89
[2020-07-20 13:01:11,881 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-20 13:01:11,882 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 13:01:12,096 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:01:12,097 INFO  L427      AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 13:01:12,098 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 13:01:12,098 INFO  L82        PathProgramCache]: Analyzing trace with hash -1408012101, now seen corresponding path program 1 times
[2020-07-20 13:01:12,099 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 13:01:12,099 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437872111]
[2020-07-20 13:01:12,100 INFO  L95    rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:01:12,396 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s)
[2020-07-20 13:01:12,397 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 13:01:12,403 INFO  L263         TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-07-20 13:01:12,406 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 13:01:12,437 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 13:01:12,438 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 13:01:12,438 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437872111]
[2020-07-20 13:01:12,438 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 13:01:12,438 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-07-20 13:01:12,439 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267076796]
[2020-07-20 13:01:12,439 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-07-20 13:01:12,439 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 13:01:12,439 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-07-20 13:01:12,440 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-20 13:01:12,440 INFO  L87              Difference]: Start difference. First operand 385 states and 433 transitions. Second operand 3 states.
[2020-07-20 13:01:12,497 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 13:01:12,497 INFO  L93              Difference]: Finished difference Result 1047 states and 1233 transitions.
[2020-07-20 13:01:12,499 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-07-20 13:01:12,499 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 88
[2020-07-20 13:01:12,500 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 13:01:12,505 INFO  L225             Difference]: With dead ends: 1047
[2020-07-20 13:01:12,505 INFO  L226             Difference]: Without dead ends: 686
[2020-07-20 13:01:12,507 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-20 13:01:12,508 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 686 states.
[2020-07-20 13:01:12,559 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 683.
[2020-07-20 13:01:12,559 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 683 states.
[2020-07-20 13:01:12,566 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 790 transitions.
[2020-07-20 13:01:12,568 INFO  L78                 Accepts]: Start accepts. Automaton has 683 states and 790 transitions. Word has length 88
[2020-07-20 13:01:12,569 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-20 13:01:12,569 INFO  L479      AbstractCegarLoop]: Abstraction has 683 states and 790 transitions.
[2020-07-20 13:01:12,569 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-07-20 13:01:12,569 INFO  L276                IsEmpty]: Start isEmpty. Operand 683 states and 790 transitions.
[2020-07-20 13:01:12,572 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 93
[2020-07-20 13:01:12,572 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-20 13:01:12,572 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 13:01:12,786 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:01:12,787 INFO  L427      AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 13:01:12,787 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 13:01:12,788 INFO  L82        PathProgramCache]: Analyzing trace with hash 350479285, now seen corresponding path program 1 times
[2020-07-20 13:01:12,788 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 13:01:12,789 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823662045]
[2020-07-20 13:01:12,789 INFO  L95    rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:01:13,141 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s)
[2020-07-20 13:01:13,142 INFO  L229   tOrderPrioritization]: Conjunction of SSA is sat
[2020-07-20 13:01:13,142 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-20 13:01:13,230 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-07-20 13:01:13,230 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-20 13:01:13,466 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-07-20 13:01:13,466 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-07-20 13:01:13,681 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:01:13,892 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:01:13 BoogieIcfgContainer
[2020-07-20 13:01:13,893 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-07-20 13:01:13,895 INFO  L168              Benchmark]: Toolchain (without parser) took 11616.52 ms. Allocated memory was 146.3 MB in the beginning and 306.7 MB in the end (delta: 160.4 MB). Free memory was 103.5 MB in the beginning and 197.1 MB in the end (delta: -93.6 MB). Peak memory consumption was 66.8 MB. Max. memory is 7.1 GB.
[2020-07-20 13:01:13,896 INFO  L168              Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 146.3 MB. Free memory is still 122.3 MB. There was no memory consumed. Max. memory is 7.1 GB.
[2020-07-20 13:01:13,898 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 761.10 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 103.1 MB in the beginning and 172.3 MB in the end (delta: -69.2 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB.
[2020-07-20 13:01:13,899 INFO  L168              Benchmark]: Boogie Preprocessor took 94.74 ms. Allocated memory is still 203.4 MB. Free memory was 172.3 MB in the beginning and 166.4 MB in the end (delta: 5.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 7.1 GB.
[2020-07-20 13:01:13,907 INFO  L168              Benchmark]: RCFGBuilder took 1344.80 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 165.8 MB in the beginning and 191.3 MB in the end (delta: -25.5 MB). Peak memory consumption was 80.1 MB. Max. memory is 7.1 GB.
[2020-07-20 13:01:13,912 INFO  L168              Benchmark]: TraceAbstraction took 9410.14 ms. Allocated memory was 235.9 MB in the beginning and 306.7 MB in the end (delta: 70.8 MB). Free memory was 191.3 MB in the beginning and 197.1 MB in the end (delta: -5.8 MB). Peak memory consumption was 64.9 MB. Max. memory is 7.1 GB.
[2020-07-20 13:01:13,917 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.49 ms. Allocated memory is still 146.3 MB. Free memory is still 122.3 MB. There was no memory consumed. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 761.10 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 103.1 MB in the beginning and 172.3 MB in the end (delta: -69.2 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 94.74 ms. Allocated memory is still 203.4 MB. Free memory was 172.3 MB in the beginning and 166.4 MB in the end (delta: 5.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 1344.80 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 165.8 MB in the beginning and 191.3 MB in the end (delta: -25.5 MB). Peak memory consumption was 80.1 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 9410.14 ms. Allocated memory was 235.9 MB in the beginning and 306.7 MB in the end (delta: 70.8 MB). Free memory was 191.3 MB in the beginning and 197.1 MB in the end (delta: -5.8 MB). Peak memory consumption was 64.9 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 73]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L247]              static struct __ACC__ERR *head  =    (struct __ACC__ERR *)0;
[L444]              int cleanupTimeShifts  =    4;
[L554]              int pumpRunning  =    0;
[L555]              int systemActive  =    1;
[L878]              int waterLevel  =    1;
[L879]              int methaneLevelCritical  =    0;
        VAL         [\old(cleanupTimeShifts)=42, \old(head)=50, \old(head)=87, \old(methaneLevelCritical)=60, \old(pumpRunning)=57, \old(systemActive)=95, \old(waterLevel)=90, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1]
[L525]              int retValue_acc ;
[L526]              int tmp ;
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1]
[L530]  FCALL       select_helpers()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1]
[L531]  FCALL       select_features()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1]
[L532]  CALL, EXPR  valid_product()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1]
[L868]              int retValue_acc ;
[L871]              retValue_acc = 1
[L872]              return (retValue_acc);
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1]
[L532]  RET, EXPR   valid_product()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1]
[L532]              tmp = valid_product()
[L534]  COND TRUE   \read(tmp)
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1]
[L536]  FCALL       setup()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1]
[L537]  CALL        runTest()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1]
[L516]  CALL        test()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1]
[L778]              int splverifierCounter ;
[L779]              int tmp ;
[L780]              int tmp___0 ;
[L781]              int tmp___1 ;
[L782]              int tmp___2 ;
[L785]              splverifierCounter = 0
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1]
[L787]  COND TRUE   1
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1]
[L789]  COND TRUE   splverifierCounter < 4
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1]
[L795]              tmp = __VERIFIER_nondet_int()
[L797]  COND TRUE   \read(tmp)
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1]
[L799]  CALL        waterRise()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1]
[L896]  COND TRUE   waterLevel < 2
[L897]              waterLevel = waterLevel + 1
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2]
[L799]  RET         waterRise()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2]
[L805]              tmp___0 = __VERIFIER_nondet_int()
[L807]  COND TRUE   \read(tmp___0)
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, waterLevel=2]
[L809]  CALL        changeMethaneLevel()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2]
[L908]  COND FALSE  !(\read(methaneLevelCritical))
[L911]              methaneLevelCritical = 1
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L809]  RET         changeMethaneLevel()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, waterLevel=2]
[L815]              tmp___2 = __VERIFIER_nondet_int()
[L817]  COND TRUE   \read(tmp___2)
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, tmp___2=1, waterLevel=2]
[L830]  CALL        timeShift()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L561]  COND FALSE  !(\read(pumpRunning))
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L568]  COND TRUE   \read(systemActive)
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L570]  CALL        processEnvironment()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L642]              int tmp ;
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L645]  COND FALSE  !(\read(pumpRunning))
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L660]  CALL        processEnvironment__wrappee__lowWaterSensor()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L616]              int tmp ;
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L619]  COND FALSE  !(\read(pumpRunning))
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L634]  CALL        processEnvironment__wrappee__highWaterSensor()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L590]              int tmp ;
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L593]  COND TRUE   ! pumpRunning
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L595]  CALL, EXPR  isHighWaterLevel()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L739]              int retValue_acc ;
[L740]              int tmp ;
[L741]              int tmp___0 ;
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L745]  CALL, EXPR  isHighWaterSensorDry()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L958]              int retValue_acc ;
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L961]  COND FALSE  !(waterLevel < 2)
[L965]              retValue_acc = 0
[L966]              return (retValue_acc);
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2]
[L745]  RET, EXPR   isHighWaterSensorDry()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L745]              tmp = isHighWaterSensorDry()
[L747]  COND FALSE  !(\read(tmp))
[L750]              tmp___0 = 1
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2]
[L752]              retValue_acc = tmp___0
[L753]              return (retValue_acc);
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2]
[L595]  RET, EXPR   isHighWaterLevel()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L595]              tmp = isHighWaterLevel()
[L597]  COND TRUE   \read(tmp)
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2]
[L599]  CALL        activatePump()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2]
[L670]              pumpRunning = 1
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2]
[L599]  RET         activatePump()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2]
[L634]  RET         processEnvironment__wrappee__highWaterSensor()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2]
[L660]  RET         processEnvironment__wrappee__lowWaterSensor()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2]
[L570]  RET         processEnvironment()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2]
[L576]  CALL        __utac_acc__Specification1_spec__1()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2]
[L44]               int tmp ;
[L45]               int tmp___0 ;
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2]
[L49]   CALL, EXPR  isMethaneLevelCritical()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2]
[L917]              int retValue_acc ;
[L920]              retValue_acc = methaneLevelCritical
[L921]              return (retValue_acc);
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2]
[L49]   RET, EXPR   isMethaneLevelCritical()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2]
[L49]               tmp = isMethaneLevelCritical()
[L51]   COND TRUE   \read(tmp)
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2]
[L53]   CALL, EXPR  isPumpRunning()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2]
[L694]              int retValue_acc ;
[L697]              retValue_acc = pumpRunning
[L698]              return (retValue_acc);
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2]
[L53]   RET, EXPR   isPumpRunning()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2]
[L53]               tmp___0 = isPumpRunning()
[L55]   COND TRUE   \read(tmp___0)
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2]
[L57]   CALL        __automaton_fail()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2]
[L73]               __VERIFIER_error()
        VAL         [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2]

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 41 procedures, 245 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9.1s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1519 SDtfs, 629 SDslu, 2533 SDs, 0 SdLazy, 532 SolverSat, 126 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 645 GetRequests, 616 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=683occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 32 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 3.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 739 NumberOfCodeBlocks, 659 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 638 ConstructedInterpolants, 0 QuantifiedInterpolants, 83940 SizeOfPredicates, 17 NumberOfNonLiveVariables, 6072 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...