/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_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -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
[2020-07-21 15:39:49,927 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-07-21 15:39:49,929 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-07-21 15:39:49,946 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-07-21 15:39:49,947 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-07-21 15:39:49,949 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-07-21 15:39:49,951 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-07-21 15:39:49,963 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-07-21 15:39:49,965 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-07-21 15:39:49,967 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-07-21 15:39:49,969 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-07-21 15:39:49,970 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-07-21 15:39:49,971 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-07-21 15:39:49,971 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-07-21 15:39:49,972 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-07-21 15:39:49,973 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-07-21 15:39:49,977 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-07-21 15:39:49,978 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-07-21 15:39:49,979 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-07-21 15:39:49,983 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-07-21 15:39:49,985 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-07-21 15:39:49,989 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-07-21 15:39:49,993 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-07-21 15:39:49,994 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-07-21 15:39:49,997 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-07-21 15:39:49,997 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-07-21 15:39:49,997 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-07-21 15:39:50,000 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-07-21 15:39:50,001 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-07-21 15:39:50,002 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-07-21 15:39:50,002 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-07-21 15:39:50,005 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-07-21 15:39:50,006 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-07-21 15:39:50,009 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-07-21 15:39:50,010 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-07-21 15:39:50,010 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-07-21 15:39:50,011 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-07-21 15:39:50,011 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-07-21 15:39:50,011 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-07-21 15:39:50,012 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-07-21 15:39:50,013 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-07-21 15:39:50,014 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
[2020-07-21 15:39:50,028 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-07-21 15:39:50,028 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-21 15:39:50,029 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-07-21 15:39:50,030 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-07-21 15:39:50,030 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-07-21 15:39:50,030 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-21 15:39:50,030 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-07-21 15:39:50,031 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-07-21 15:39:50,031 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-07-21 15:39:50,031 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-07-21 15:39:50,031 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-07-21 15:39:50,032 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-21 15:39:50,032 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-07-21 15:39:50,032 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-07-21 15:39:50,032 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-07-21 15:39:50,032 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-07-21 15:39:50,032 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-07-21 15:39:50,033 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-21 15:39:50,033 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-07-21 15:39:50,033 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-07-21 15:39:50,033 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-07-21 15:39:50,033 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-21 15:39:50,034 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-21 15:39:50,034 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-07-21 15:39:50,034 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-07-21 15:39:50,034 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-07-21 15:39:50,035 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 15:39:50,035 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-21 15:39:50,035 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-07-21 15:39:50,035 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_VARIABLES
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 -> 2
[2020-07-21 15:39:50,361 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-21 15:39:50,381 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-21 15:39:50,385 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-21 15:39:50,386 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-07-21 15:39:50,389 INFO  L275        PluginConnector]: CDTParser initialized
[2020-07-21 15:39:50,390 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product53.cil.c
[2020-07-21 15:39:50,463 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/712f80742/acc831e5339543d1b2c0581b5a27efbb/FLAGa424150d5
[2020-07-21 15:39:51,059 INFO  L306              CDTParser]: Found 1 translation units.
[2020-07-21 15:39:51,061 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product53.cil.c
[2020-07-21 15:39:51,075 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/712f80742/acc831e5339543d1b2c0581b5a27efbb/FLAGa424150d5
[2020-07-21 15:39:51,345 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/712f80742/acc831e5339543d1b2c0581b5a27efbb
[2020-07-21 15:39:51,353 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-21 15:39:51,356 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-21 15:39:51,357 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-21 15:39:51,357 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-21 15:39:51,361 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-21 15:39:51,362 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:39:51" (1/1) ...
[2020-07-21 15:39:51,365 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c1f8203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:51, skipping insertion in model container
[2020-07-21 15:39:51,365 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:39:51" (1/1) ...
[2020-07-21 15:39:51,371 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-07-21 15:39:51,425 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-07-21 15:39:51,828 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-07-21 15:39:51,839 INFO  L203         MainTranslator]: Completed pre-run
[2020-07-21 15:39:51,937 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-07-21 15:39:51,983 INFO  L208         MainTranslator]: Completed translation
[2020-07-21 15:39:51,983 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:51 WrapperNode
[2020-07-21 15:39:51,984 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-21 15:39:51,984 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-21 15:39:51,984 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-21 15:39:51,984 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-07-21 15:39:51,998 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:51" (1/1) ...
[2020-07-21 15:39:51,999 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:51" (1/1) ...
[2020-07-21 15:39:52,017 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:51" (1/1) ...
[2020-07-21 15:39:52,018 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:51" (1/1) ...
[2020-07-21 15:39:52,053 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:51" (1/1) ...
[2020-07-21 15:39:52,065 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:51" (1/1) ...
[2020-07-21 15:39:52,071 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:51" (1/1) ...
[2020-07-21 15:39:52,081 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-21 15:39:52,082 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-21 15:39:52,082 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-07-21 15:39:52,082 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-07-21 15:39:52,085 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:51" (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
[2020-07-21 15:39:52,192 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-21 15:39:52,192 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-21 15:39:52,193 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-07-21 15:39:52,193 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1
[2020-07-21 15:39:52,193 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-07-21 15:39:52,195 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-07-21 15:39:52,195 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-07-21 15:39:52,196 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-07-21 15:39:52,196 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-07-21 15:39:52,196 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-07-21 15:39:52,197 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-07-21 15:39:52,197 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-07-21 15:39:52,197 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-07-21 15:39:52,198 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-07-21 15:39:52,198 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-07-21 15:39:52,199 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-07-21 15:39:52,199 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-07-21 15:39:52,199 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base
[2020-07-21 15:39:52,200 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor
[2020-07-21 15:39:52,200 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor
[2020-07-21 15:39:52,200 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-07-21 15:39:52,201 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-07-21 15:39:52,201 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-07-21 15:39:52,201 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-07-21 15:39:52,201 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-07-21 15:39:52,202 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-07-21 15:39:52,202 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterLevel
[2020-07-21 15:39:52,203 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterLevel
[2020-07-21 15:39:52,203 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-07-21 15:39:52,204 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-07-21 15:39:52,204 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-07-21 15:39:52,204 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-07-21 15:39:52,204 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-07-21 15:39:52,204 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-07-21 15:39:52,204 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-07-21 15:39:52,205 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-07-21 15:39:52,205 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-07-21 15:39:52,205 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-07-21 15:39:52,205 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-07-21 15:39:52,205 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry
[2020-07-21 15:39:52,206 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry
[2020-07-21 15:39:52,206 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-21 15:39:52,206 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-07-21 15:39:52,206 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-07-21 15:39:52,206 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-07-21 15:39:52,206 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-07-21 15:39:52,207 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-07-21 15:39:52,208 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1
[2020-07-21 15:39:52,208 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-07-21 15:39:52,208 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-07-21 15:39:52,209 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-07-21 15:39:52,209 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-07-21 15:39:52,209 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-07-21 15:39:52,209 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-07-21 15:39:52,209 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-07-21 15:39:52,210 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-07-21 15:39:52,210 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-07-21 15:39:52,210 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-07-21 15:39:52,211 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-07-21 15:39:52,211 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-07-21 15:39:52,211 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-07-21 15:39:52,211 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-07-21 15:39:52,211 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-07-21 15:39:52,212 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-07-21 15:39:52,212 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-07-21 15:39:52,212 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-07-21 15:39:52,212 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-07-21 15:39:52,212 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-07-21 15:39:52,212 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-07-21 15:39:52,212 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-07-21 15:39:52,213 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-07-21 15:39:52,213 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-07-21 15:39:52,213 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-07-21 15:39:52,214 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-07-21 15:39:52,214 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-07-21 15:39:52,214 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-07-21 15:39:52,215 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-07-21 15:39:52,215 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-07-21 15:39:52,216 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-07-21 15:39:52,216 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-07-21 15:39:52,216 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry
[2020-07-21 15:39:52,216 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry
[2020-07-21 15:39:52,216 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-07-21 15:39:52,216 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-07-21 15:39:52,216 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-07-21 15:39:52,217 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base
[2020-07-21 15:39:52,217 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterLevel
[2020-07-21 15:39:52,217 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor
[2020-07-21 15:39:52,217 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterLevel
[2020-07-21 15:39:52,217 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor
[2020-07-21 15:39:52,217 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-07-21 15:39:52,218 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-07-21 15:39:52,218 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-07-21 15:39:52,218 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-21 15:39:52,218 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-07-21 15:39:52,218 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-21 15:39:53,305 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-21 15:39:53,305 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-07-21 15:39:53,310 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:39:53 BoogieIcfgContainer
[2020-07-21 15:39:53,310 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-21 15:39:53,311 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-21 15:39:53,312 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-07-21 15:39:53,314 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-07-21 15:39:53,315 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 03:39:51" (1/3) ...
[2020-07-21 15:39:53,315 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5105996e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:39:53, skipping insertion in model container
[2020-07-21 15:39:53,316 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:51" (2/3) ...
[2020-07-21 15:39:53,316 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5105996e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:39:53, skipping insertion in model container
[2020-07-21 15:39:53,316 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:39:53" (3/3) ...
[2020-07-21 15:39:53,318 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec1_product53.cil.c
[2020-07-21 15:39:53,328 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION
[2020-07-21 15:39:53,335 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-07-21 15:39:53,349 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-07-21 15:39:53,373 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-07-21 15:39:53,374 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-07-21 15:39:53,374 INFO  L377      AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect
[2020-07-21 15:39:53,374 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-21 15:39:53,374 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-21 15:39:53,374 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-07-21 15:39:53,375 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-21 15:39:53,375 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-21 15:39:53,397 INFO  L276                IsEmpty]: Start isEmpty. Operand 186 states.
[2020-07-21 15:39:53,406 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2020-07-21 15:39:53,407 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 15:39:53,408 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]
[2020-07-21 15:39:53,408 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 15:39:53,414 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 15:39:53,414 INFO  L82        PathProgramCache]: Analyzing trace with hash 1737906003, now seen corresponding path program 1 times
[2020-07-21 15:39:53,423 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 15:39:53,423 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485789291]
[2020-07-21 15:39:53,424 INFO  L95    rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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
[2020-07-21 15:39:53,831 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s)
[2020-07-21 15:39:53,832 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 15:39:53,840 INFO  L263         TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 1 conjunts are in the unsatisfiable core
[2020-07-21 15:39:53,853 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 15:39:53,896 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-21 15:39:53,896 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 15:39:53,898 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [485789291]
[2020-07-21 15:39:53,898 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 15:39:53,899 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2020-07-21 15:39:53,900 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802609135]
[2020-07-21 15:39:53,906 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 2 states
[2020-07-21 15:39:53,907 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 15:39:53,921 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2020-07-21 15:39:53,931 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-07-21 15:39:53,934 INFO  L87              Difference]: Start difference. First operand 186 states. Second operand 2 states.
[2020-07-21 15:39:54,023 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 15:39:54,024 INFO  L93              Difference]: Finished difference Result 286 states and 357 transitions.
[2020-07-21 15:39:54,024 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2020-07-21 15:39:54,025 INFO  L78                 Accepts]: Start accepts. Automaton has 2 states. Word has length 46
[2020-07-21 15:39:54,026 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 15:39:54,039 INFO  L225             Difference]: With dead ends: 286
[2020-07-21 15:39:54,039 INFO  L226             Difference]: Without dead ends: 143
[2020-07-21 15:39:54,044 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
[2020-07-21 15:39:54,065 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 143 states.
[2020-07-21 15:39:54,105 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143.
[2020-07-21 15:39:54,107 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 143 states.
[2020-07-21 15:39:54,109 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 170 transitions.
[2020-07-21 15:39:54,111 INFO  L78                 Accepts]: Start accepts. Automaton has 143 states and 170 transitions. Word has length 46
[2020-07-21 15:39:54,112 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 15:39:54,112 INFO  L479      AbstractCegarLoop]: Abstraction has 143 states and 170 transitions.
[2020-07-21 15:39:54,112 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 2 states.
[2020-07-21 15:39:54,113 INFO  L276                IsEmpty]: Start isEmpty. Operand 143 states and 170 transitions.
[2020-07-21 15:39:54,116 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2020-07-21 15:39:54,117 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 15:39:54,117 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]
[2020-07-21 15:39:54,331 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 15:39:54,332 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 15:39:54,332 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 15:39:54,332 INFO  L82        PathProgramCache]: Analyzing trace with hash 1744597296, now seen corresponding path program 1 times
[2020-07-21 15:39:54,333 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 15:39:54,333 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174790408]
[2020-07-21 15:39:54,333 INFO  L95    rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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
[2020-07-21 15:39:54,733 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s)
[2020-07-21 15:39:54,733 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 15:39:54,738 INFO  L263         TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 2 conjunts are in the unsatisfiable core
[2020-07-21 15:39:54,743 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 15:39:54,782 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-21 15:39:54,783 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 15:39:54,783 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174790408]
[2020-07-21 15:39:54,783 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 15:39:54,783 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-07-21 15:39:54,784 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745450133]
[2020-07-21 15:39:54,785 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-07-21 15:39:54,786 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 15:39:54,786 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-07-21 15:39:54,786 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 15:39:54,787 INFO  L87              Difference]: Start difference. First operand 143 states and 170 transitions. Second operand 3 states.
[2020-07-21 15:39:54,810 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 15:39:54,811 INFO  L93              Difference]: Finished difference Result 262 states and 319 transitions.
[2020-07-21 15:39:54,811 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-07-21 15:39:54,812 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 47
[2020-07-21 15:39:54,812 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 15:39:54,815 INFO  L225             Difference]: With dead ends: 262
[2020-07-21 15:39:54,815 INFO  L226             Difference]: Without dead ends: 143
[2020-07-21 15:39:54,818 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
[2020-07-21 15:39:54,819 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 143 states.
[2020-07-21 15:39:54,846 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143.
[2020-07-21 15:39:54,847 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 143 states.
[2020-07-21 15:39:54,853 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 169 transitions.
[2020-07-21 15:39:54,853 INFO  L78                 Accepts]: Start accepts. Automaton has 143 states and 169 transitions. Word has length 47
[2020-07-21 15:39:54,854 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 15:39:54,854 INFO  L479      AbstractCegarLoop]: Abstraction has 143 states and 169 transitions.
[2020-07-21 15:39:54,854 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-07-21 15:39:54,855 INFO  L276                IsEmpty]: Start isEmpty. Operand 143 states and 169 transitions.
[2020-07-21 15:39:54,860 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 70
[2020-07-21 15:39:54,862 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 15:39:54,862 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]
[2020-07-21 15:39:55,077 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 15:39:55,078 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 15:39:55,078 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 15:39:55,079 INFO  L82        PathProgramCache]: Analyzing trace with hash 1654731465, now seen corresponding path program 1 times
[2020-07-21 15:39:55,079 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 15:39:55,079 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267774715]
[2020-07-21 15:39:55,080 INFO  L95    rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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
[2020-07-21 15:39:55,345 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s)
[2020-07-21 15:39:55,345 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 15:39:55,349 INFO  L263         TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 15 conjunts are in the unsatisfiable core
[2020-07-21 15:39:55,353 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 15:39:55,401 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-21 15:39:55,402 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 15:39:55,402 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267774715]
[2020-07-21 15:39:55,402 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 15:39:55,402 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-07-21 15:39:55,403 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641264140]
[2020-07-21 15:39:55,403 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-07-21 15:39:55,404 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 15:39:55,404 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-07-21 15:39:55,404 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2020-07-21 15:39:55,404 INFO  L87              Difference]: Start difference. First operand 143 states and 169 transitions. Second operand 7 states.
[2020-07-21 15:39:56,185 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 15:39:56,186 INFO  L93              Difference]: Finished difference Result 369 states and 482 transitions.
[2020-07-21 15:39:56,186 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-07-21 15:39:56,186 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 69
[2020-07-21 15:39:56,187 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 15:39:56,193 INFO  L225             Difference]: With dead ends: 369
[2020-07-21 15:39:56,193 INFO  L226             Difference]: Without dead ends: 250
[2020-07-21 15:39:56,198 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132
[2020-07-21 15:39:56,199 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 250 states.
[2020-07-21 15:39:56,235 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 221.
[2020-07-21 15:39:56,235 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 221 states.
[2020-07-21 15:39:56,242 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 272 transitions.
[2020-07-21 15:39:56,242 INFO  L78                 Accepts]: Start accepts. Automaton has 221 states and 272 transitions. Word has length 69
[2020-07-21 15:39:56,243 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 15:39:56,243 INFO  L479      AbstractCegarLoop]: Abstraction has 221 states and 272 transitions.
[2020-07-21 15:39:56,243 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-07-21 15:39:56,243 INFO  L276                IsEmpty]: Start isEmpty. Operand 221 states and 272 transitions.
[2020-07-21 15:39:56,251 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 85
[2020-07-21 15:39:56,251 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 15:39:56,252 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]
[2020-07-21 15:39:56,452 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 15:39:56,453 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 15:39:56,453 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 15:39:56,454 INFO  L82        PathProgramCache]: Analyzing trace with hash -1339692446, now seen corresponding path program 1 times
[2020-07-21 15:39:56,454 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 15:39:56,455 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596051563]
[2020-07-21 15:39:56,455 INFO  L95    rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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
[2020-07-21 15:39:56,726 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s)
[2020-07-21 15:39:56,726 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 15:39:56,730 INFO  L263         TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 23 conjunts are in the unsatisfiable core
[2020-07-21 15:39:56,736 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 15:39:56,780 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-21 15:39:56,780 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 15:39:56,781 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596051563]
[2020-07-21 15:39:56,781 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 15:39:56,781 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-07-21 15:39:56,781 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416836460]
[2020-07-21 15:39:56,782 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-07-21 15:39:56,782 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 15:39:56,782 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-07-21 15:39:56,783 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2020-07-21 15:39:56,783 INFO  L87              Difference]: Start difference. First operand 221 states and 272 transitions. Second operand 6 states.
[2020-07-21 15:39:56,997 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 15:39:56,997 INFO  L93              Difference]: Finished difference Result 604 states and 785 transitions.
[2020-07-21 15:39:56,998 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-07-21 15:39:56,998 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 84
[2020-07-21 15:39:56,999 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 15:39:57,004 INFO  L225             Difference]: With dead ends: 604
[2020-07-21 15:39:57,004 INFO  L226             Difference]: Without dead ends: 389
[2020-07-21 15:39:57,005 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2020-07-21 15:39:57,006 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 389 states.
[2020-07-21 15:39:57,041 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 385.
[2020-07-21 15:39:57,042 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 385 states.
[2020-07-21 15:39:57,045 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 471 transitions.
[2020-07-21 15:39:57,045 INFO  L78                 Accepts]: Start accepts. Automaton has 385 states and 471 transitions. Word has length 84
[2020-07-21 15:39:57,046 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 15:39:57,046 INFO  L479      AbstractCegarLoop]: Abstraction has 385 states and 471 transitions.
[2020-07-21 15:39:57,046 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-07-21 15:39:57,046 INFO  L276                IsEmpty]: Start isEmpty. Operand 385 states and 471 transitions.
[2020-07-21 15:39:57,048 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 89
[2020-07-21 15:39:57,048 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 15:39:57,048 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]
[2020-07-21 15:39:57,263 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 15:39:57,264 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 15:39:57,265 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 15:39:57,265 INFO  L82        PathProgramCache]: Analyzing trace with hash 661895326, now seen corresponding path program 1 times
[2020-07-21 15:39:57,266 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 15:39:57,266 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961407440]
[2020-07-21 15:39:57,267 INFO  L95    rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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
[2020-07-21 15:39:57,503 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s)
[2020-07-21 15:39:57,503 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 15:39:57,507 INFO  L263         TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-07-21 15:39:57,511 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 15:39:57,545 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-21 15:39:57,546 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 15:39:57,546 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961407440]
[2020-07-21 15:39:57,546 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 15:39:57,546 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-07-21 15:39:57,547 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709103584]
[2020-07-21 15:39:57,547 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-07-21 15:39:57,547 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 15:39:57,548 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-07-21 15:39:57,548 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-07-21 15:39:57,548 INFO  L87              Difference]: Start difference. First operand 385 states and 471 transitions. Second operand 6 states.
[2020-07-21 15:39:57,602 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 15:39:57,602 INFO  L93              Difference]: Finished difference Result 756 states and 950 transitions.
[2020-07-21 15:39:57,603 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-07-21 15:39:57,603 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 88
[2020-07-21 15:39:57,604 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 15:39:57,607 INFO  L225             Difference]: With dead ends: 756
[2020-07-21 15:39:57,607 INFO  L226             Difference]: Without dead ends: 395
[2020-07-21 15:39:57,609 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
[2020-07-21 15:39:57,610 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 395 states.
[2020-07-21 15:39:57,637 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395.
[2020-07-21 15:39:57,638 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 395 states.
[2020-07-21 15:39:57,641 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 481 transitions.
[2020-07-21 15:39:57,642 INFO  L78                 Accepts]: Start accepts. Automaton has 395 states and 481 transitions. Word has length 88
[2020-07-21 15:39:57,642 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 15:39:57,642 INFO  L479      AbstractCegarLoop]: Abstraction has 395 states and 481 transitions.
[2020-07-21 15:39:57,643 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-07-21 15:39:57,643 INFO  L276                IsEmpty]: Start isEmpty. Operand 395 states and 481 transitions.
[2020-07-21 15:39:57,644 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 89
[2020-07-21 15:39:57,645 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 15:39:57,645 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]
[2020-07-21 15:39:57,860 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 15:39:57,861 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 15:39:57,862 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 15:39:57,862 INFO  L82        PathProgramCache]: Analyzing trace with hash 936654940, now seen corresponding path program 1 times
[2020-07-21 15:39:57,862 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 15:39:57,863 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892579641]
[2020-07-21 15:39:57,863 INFO  L95    rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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
[2020-07-21 15:39:58,049 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s)
[2020-07-21 15:39:58,050 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 15:39:58,052 INFO  L263         TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 5 conjunts are in the unsatisfiable core
[2020-07-21 15:39:58,056 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 15:39:58,088 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-21 15:39:58,088 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 15:39:58,089 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892579641]
[2020-07-21 15:39:58,089 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 15:39:58,089 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-07-21 15:39:58,089 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794536402]
[2020-07-21 15:39:58,090 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-07-21 15:39:58,090 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 15:39:58,090 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-07-21 15:39:58,091 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-07-21 15:39:58,091 INFO  L87              Difference]: Start difference. First operand 395 states and 481 transitions. Second operand 5 states.
[2020-07-21 15:39:58,120 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 15:39:58,120 INFO  L93              Difference]: Finished difference Result 780 states and 996 transitions.
[2020-07-21 15:39:58,120 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-07-21 15:39:58,121 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 88
[2020-07-21 15:39:58,121 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 15:39:58,124 INFO  L225             Difference]: With dead ends: 780
[2020-07-21 15:39:58,124 INFO  L226             Difference]: Without dead ends: 409
[2020-07-21 15:39:58,126 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
[2020-07-21 15:39:58,127 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 409 states.
[2020-07-21 15:39:58,147 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 403.
[2020-07-21 15:39:58,147 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 403 states.
[2020-07-21 15:39:58,150 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 489 transitions.
[2020-07-21 15:39:58,150 INFO  L78                 Accepts]: Start accepts. Automaton has 403 states and 489 transitions. Word has length 88
[2020-07-21 15:39:58,151 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 15:39:58,151 INFO  L479      AbstractCegarLoop]: Abstraction has 403 states and 489 transitions.
[2020-07-21 15:39:58,151 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-07-21 15:39:58,151 INFO  L276                IsEmpty]: Start isEmpty. Operand 403 states and 489 transitions.
[2020-07-21 15:39:58,152 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 89
[2020-07-21 15:39:58,153 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 15:39:58,153 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]
[2020-07-21 15:39:58,366 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 15:39:58,367 INFO  L427      AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 15:39:58,368 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 15:39:58,368 INFO  L82        PathProgramCache]: Analyzing trace with hash -1408012101, now seen corresponding path program 1 times
[2020-07-21 15:39:58,369 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 15:39:58,369 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128776894]
[2020-07-21 15:39:58,370 INFO  L95    rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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
[2020-07-21 15:39:58,595 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s)
[2020-07-21 15:39:58,595 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 15:39:58,598 INFO  L263         TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-07-21 15:39:58,602 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 15:39:58,629 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-21 15:39:58,629 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 15:39:58,629 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128776894]
[2020-07-21 15:39:58,630 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 15:39:58,630 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-07-21 15:39:58,630 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382611518]
[2020-07-21 15:39:58,630 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-07-21 15:39:58,631 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 15:39:58,631 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-07-21 15:39:58,631 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 15:39:58,631 INFO  L87              Difference]: Start difference. First operand 403 states and 489 transitions. Second operand 3 states.
[2020-07-21 15:39:58,684 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 15:39:58,685 INFO  L93              Difference]: Finished difference Result 1101 states and 1437 transitions.
[2020-07-21 15:39:58,685 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-07-21 15:39:58,685 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 88
[2020-07-21 15:39:58,686 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 15:39:58,690 INFO  L225             Difference]: With dead ends: 1101
[2020-07-21 15:39:58,690 INFO  L226             Difference]: Without dead ends: 713
[2020-07-21 15:39:58,692 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
[2020-07-21 15:39:58,694 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 713 states.
[2020-07-21 15:39:58,749 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 710.
[2020-07-21 15:39:58,750 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 710 states.
[2020-07-21 15:39:58,754 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 884 transitions.
[2020-07-21 15:39:58,755 INFO  L78                 Accepts]: Start accepts. Automaton has 710 states and 884 transitions. Word has length 88
[2020-07-21 15:39:58,756 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 15:39:58,756 INFO  L479      AbstractCegarLoop]: Abstraction has 710 states and 884 transitions.
[2020-07-21 15:39:58,756 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-07-21 15:39:58,756 INFO  L276                IsEmpty]: Start isEmpty. Operand 710 states and 884 transitions.
[2020-07-21 15:39:58,758 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 93
[2020-07-21 15:39:58,759 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 15:39:58,759 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]
[2020-07-21 15:39:58,974 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 15:39:58,975 INFO  L427      AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 15:39:58,975 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 15:39:58,975 INFO  L82        PathProgramCache]: Analyzing trace with hash 350479285, now seen corresponding path program 1 times
[2020-07-21 15:39:58,975 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 15:39:58,976 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189529846]
[2020-07-21 15:39:58,976 INFO  L95    rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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
[2020-07-21 15:39:59,296 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s)
[2020-07-21 15:39:59,296 INFO  L229   tOrderPrioritization]: Conjunction of SSA is sat
[2020-07-21 15:39:59,296 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-21 15:39:59,385 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-07-21 15:39:59,385 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-21 15:39:59,635 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-07-21 15:39:59,635 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-07-21 15:39:59,845 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 15:40:00,025 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 03:40:00 BoogieIcfgContainer
[2020-07-21 15:40:00,028 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-07-21 15:40:00,031 INFO  L168              Benchmark]: Toolchain (without parser) took 8675.63 ms. Allocated memory was 146.3 MB in the beginning and 318.8 MB in the end (delta: 172.5 MB). Free memory was 103.0 MB in the beginning and 163.3 MB in the end (delta: -60.3 MB). Peak memory consumption was 112.2 MB. Max. memory is 7.1 GB.
[2020-07-21 15:40:00,032 INFO  L168              Benchmark]: CDTParser took 0.54 ms. Allocated memory is still 146.3 MB. Free memory is still 122.1 MB. There was no memory consumed. Max. memory is 7.1 GB.
[2020-07-21 15:40:00,032 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 627.07 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 102.6 MB in the beginning and 170.3 MB in the end (delta: -67.7 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB.
[2020-07-21 15:40:00,033 INFO  L168              Benchmark]: Boogie Preprocessor took 97.10 ms. Allocated memory is still 203.9 MB. Free memory was 170.3 MB in the beginning and 165.4 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB.
[2020-07-21 15:40:00,036 INFO  L168              Benchmark]: RCFGBuilder took 1228.66 ms. Allocated memory was 203.9 MB in the beginning and 236.5 MB in the end (delta: 32.5 MB). Free memory was 165.4 MB in the beginning and 189.8 MB in the end (delta: -24.4 MB). Peak memory consumption was 79.9 MB. Max. memory is 7.1 GB.
[2020-07-21 15:40:00,037 INFO  L168              Benchmark]: TraceAbstraction took 6717.04 ms. Allocated memory was 236.5 MB in the beginning and 318.8 MB in the end (delta: 82.3 MB). Free memory was 189.8 MB in the beginning and 163.3 MB in the end (delta: 26.4 MB). Peak memory consumption was 108.7 MB. Max. memory is 7.1 GB.
[2020-07-21 15:40:00,040 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.54 ms. Allocated memory is still 146.3 MB. Free memory is still 122.1 MB. There was no memory consumed. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 627.07 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 102.6 MB in the beginning and 170.3 MB in the end (delta: -67.7 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 97.10 ms. Allocated memory is still 203.9 MB. Free memory was 170.3 MB in the beginning and 165.4 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 1228.66 ms. Allocated memory was 203.9 MB in the beginning and 236.5 MB in the end (delta: 32.5 MB). Free memory was 165.4 MB in the beginning and 189.8 MB in the end (delta: -24.4 MB). Peak memory consumption was 79.9 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 6717.04 ms. Allocated memory was 236.5 MB in the beginning and 318.8 MB in the end (delta: 82.3 MB). Free memory was 189.8 MB in the beginning and 163.3 MB in the end (delta: 26.4 MB). Peak memory consumption was 108.7 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)=39, \old(head)=48, \old(head)=85, \old(methaneLevelCritical)=57, \old(pumpRunning)=55, \old(systemActive)=93, \old(waterLevel)=88, 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: 6.4s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1227 SDtfs, 576 SDslu, 2250 SDs, 0 SdLazy, 584 SolverSat, 129 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 512 GetRequests, 485 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=710occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 42 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 602 NumberOfCodeBlocks, 558 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 503 ConstructedInterpolants, 0 QuantifiedInterpolants, 68225 SizeOfPredicates, 16 NumberOfNonLiveVariables, 4761 ConjunctsInSsa, 67 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...