/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product19.cil.c


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


This is Ultimate 0.1.25-5644d1e-m
[2020-08-18 19:19:36,929 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-08-18 19:19:36,932 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-08-18 19:19:36,972 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-08-18 19:19:36,973 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-08-18 19:19:36,981 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-08-18 19:19:36,983 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-08-18 19:19:36,987 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-08-18 19:19:36,989 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-08-18 19:19:36,992 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-08-18 19:19:36,993 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-08-18 19:19:36,994 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-08-18 19:19:36,994 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-08-18 19:19:36,996 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-08-18 19:19:36,999 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-08-18 19:19:37,000 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-08-18 19:19:37,002 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-08-18 19:19:37,002 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-08-18 19:19:37,004 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-08-18 19:19:37,013 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-08-18 19:19:37,015 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-08-18 19:19:37,016 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-08-18 19:19:37,017 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-08-18 19:19:37,017 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-08-18 19:19:37,034 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-08-18 19:19:37,034 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-08-18 19:19:37,034 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-08-18 19:19:37,035 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-08-18 19:19:37,036 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-08-18 19:19:37,036 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-08-18 19:19:37,037 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-08-18 19:19:37,037 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-08-18 19:19:37,038 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-08-18 19:19:37,042 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-08-18 19:19:37,043 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-08-18 19:19:37,043 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-08-18 19:19:37,047 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-08-18 19:19:37,047 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-08-18 19:19:37,048 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-08-18 19:19:37,049 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-08-18 19:19:37,051 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-08-18 19:19:37,051 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-08-18 19:19:37,084 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-08-18 19:19:37,084 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-08-18 19:19:37,086 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-08-18 19:19:37,086 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-08-18 19:19:37,086 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-08-18 19:19:37,086 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-08-18 19:19:37,088 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-08-18 19:19:37,088 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-08-18 19:19:37,088 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-08-18 19:19:37,088 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-08-18 19:19:37,089 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-08-18 19:19:37,089 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-08-18 19:19:37,089 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-08-18 19:19:37,089 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-08-18 19:19:37,089 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-08-18 19:19:37,090 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-08-18 19:19:37,090 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-08-18 19:19:37,090 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-08-18 19:19:37,090 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-08-18 19:19:37,090 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-08-18 19:19:37,090 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-08-18 19:19:37,090 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-18 19:19:37,094 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-08-18 19:19:37,094 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-08-18 19:19:37,094 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-08-18 19:19:37,094 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-08-18 19:19:37,094 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-08-18 19:19:37,095 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-08-18 19:19:37,095 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-08-18 19:19:37,095 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER;
[2020-08-18 19:19:37,414 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-08-18 19:19:37,425 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-08-18 19:19:37,431 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-08-18 19:19:37,432 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-08-18 19:19:37,433 INFO  L275        PluginConnector]: CDTParser initialized
[2020-08-18 19:19:37,434 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product19.cil.c
[2020-08-18 19:19:37,489 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/982d4d82f/c9adc3f771ee4f3cbb3b1c7d3723eed9/FLAG94b4a18e3
[2020-08-18 19:19:38,043 INFO  L306              CDTParser]: Found 1 translation units.
[2020-08-18 19:19:38,044 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product19.cil.c
[2020-08-18 19:19:38,054 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/982d4d82f/c9adc3f771ee4f3cbb3b1c7d3723eed9/FLAG94b4a18e3
[2020-08-18 19:19:38,364 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/982d4d82f/c9adc3f771ee4f3cbb3b1c7d3723eed9
[2020-08-18 19:19:38,374 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-08-18 19:19:38,376 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-08-18 19:19:38,378 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-08-18 19:19:38,378 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-08-18 19:19:38,382 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-08-18 19:19:38,383 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:19:38" (1/1) ...
[2020-08-18 19:19:38,386 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ac45c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:19:38, skipping insertion in model container
[2020-08-18 19:19:38,386 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:19:38" (1/1) ...
[2020-08-18 19:19:38,394 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-08-18 19:19:38,438 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-08-18 19:19:38,893 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-18 19:19:38,907 INFO  L203         MainTranslator]: Completed pre-run
[2020-08-18 19:19:39,045 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-18 19:19:39,078 INFO  L208         MainTranslator]: Completed translation
[2020-08-18 19:19:39,079 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:19:39 WrapperNode
[2020-08-18 19:19:39,079 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-08-18 19:19:39,080 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-08-18 19:19:39,080 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-08-18 19:19:39,080 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-08-18 19:19:39,094 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:19:39" (1/1) ...
[2020-08-18 19:19:39,094 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:19:39" (1/1) ...
[2020-08-18 19:19:39,114 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:19:39" (1/1) ...
[2020-08-18 19:19:39,114 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:19:39" (1/1) ...
[2020-08-18 19:19:39,144 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:19:39" (1/1) ...
[2020-08-18 19:19:39,154 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:19:39" (1/1) ...
[2020-08-18 19:19:39,160 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:19:39" (1/1) ...
[2020-08-18 19:19:39,168 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-08-18 19:19:39,169 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-08-18 19:19:39,169 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-08-18 19:19:39,169 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-08-18 19:19:39,170 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:19:39" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-18 19:19:39,231 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-08-18 19:19:39,231 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-08-18 19:19:39,231 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-08-18 19:19:39,231 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-08-18 19:19:39,231 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-08-18 19:19:39,232 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-08-18 19:19:39,232 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-08-18 19:19:39,232 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-08-18 19:19:39,232 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1
[2020-08-18 19:19:39,232 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-08-18 19:19:39,232 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-08-18 19:19:39,232 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-08-18 19:19:39,233 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-08-18 19:19:39,233 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-08-18 19:19:39,233 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-08-18 19:19:39,233 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-08-18 19:19:39,233 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-08-18 19:19:39,233 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-08-18 19:19:39,234 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-08-18 19:19:39,234 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-08-18 19:19:39,234 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-08-18 19:19:39,234 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-08-18 19:19:39,234 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-08-18 19:19:39,234 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-08-18 19:19:39,234 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-08-18 19:19:39,235 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-08-18 19:19:39,235 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry
[2020-08-18 19:19:39,235 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-08-18 19:19:39,235 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-08-18 19:19:39,235 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base
[2020-08-18 19:19:39,235 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-08-18 19:19:39,235 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-08-18 19:19:39,236 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-08-18 19:19:39,236 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-08-18 19:19:39,236 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-08-18 19:19:39,236 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-08-18 19:19:39,236 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterLevel
[2020-08-18 19:19:39,236 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopSystem
[2020-08-18 19:19:39,237 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-08-18 19:19:39,237 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-08-18 19:19:39,237 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-08-18 19:19:39,237 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-08-18 19:19:39,237 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-08-18 19:19:39,237 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-08-18 19:19:39,237 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-08-18 19:19:39,238 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-08-18 19:19:39,238 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-08-18 19:19:39,238 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-08-18 19:19:39,238 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-08-18 19:19:39,238 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1
[2020-08-18 19:19:39,238 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-08-18 19:19:39,238 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-08-18 19:19:39,239 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-08-18 19:19:39,239 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-08-18 19:19:39,239 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-08-18 19:19:39,239 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-08-18 19:19:39,239 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-08-18 19:19:39,239 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-08-18 19:19:39,239 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-08-18 19:19:39,240 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-08-18 19:19:39,240 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-08-18 19:19:39,240 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-08-18 19:19:39,240 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-08-18 19:19:39,240 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-08-18 19:19:39,240 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-08-18 19:19:39,241 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-08-18 19:19:39,241 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-08-18 19:19:39,241 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-08-18 19:19:39,241 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-08-18 19:19:39,241 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-08-18 19:19:39,241 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-08-18 19:19:39,241 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-08-18 19:19:39,242 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-08-18 19:19:39,242 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-08-18 19:19:39,242 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-08-18 19:19:39,242 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-08-18 19:19:39,242 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-08-18 19:19:39,242 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-08-18 19:19:39,243 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-08-18 19:19:39,243 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry
[2020-08-18 19:19:39,243 INFO  L130     BoogieDeclarations]: Found specification of procedure stopSystem
[2020-08-18 19:19:39,243 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-08-18 19:19:39,243 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-08-18 19:19:39,243 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-08-18 19:19:39,243 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base
[2020-08-18 19:19:39,244 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterLevel
[2020-08-18 19:19:39,244 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-08-18 19:19:39,244 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-08-18 19:19:39,244 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-08-18 19:19:39,244 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-08-18 19:19:40,301 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-08-18 19:19:40,301 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-08-18 19:19:40,306 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:19:40 BoogieIcfgContainer
[2020-08-18 19:19:40,307 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-08-18 19:19:40,308 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-08-18 19:19:40,308 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-08-18 19:19:40,311 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-08-18 19:19:40,311 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 07:19:38" (1/3) ...
[2020-08-18 19:19:40,312 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f6ace6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:19:40, skipping insertion in model container
[2020-08-18 19:19:40,312 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:19:39" (2/3) ...
[2020-08-18 19:19:40,313 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f6ace6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:19:40, skipping insertion in model container
[2020-08-18 19:19:40,313 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:19:40" (3/3) ...
[2020-08-18 19:19:40,315 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec3_product19.cil.c
[2020-08-18 19:19:40,325 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-08-18 19:19:40,333 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-08-18 19:19:40,347 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-08-18 19:19:40,372 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-08-18 19:19:40,372 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-08-18 19:19:40,372 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-08-18 19:19:40,372 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-08-18 19:19:40,372 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-08-18 19:19:40,373 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-08-18 19:19:40,373 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-08-18 19:19:40,373 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-08-18 19:19:40,394 INFO  L276                IsEmpty]: Start isEmpty. Operand 162 states.
[2020-08-18 19:19:40,404 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2020-08-18 19:19:40,404 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 19:19:40,405 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 19:19:40,406 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 19:19:40,410 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 19:19:40,411 INFO  L82        PathProgramCache]: Analyzing trace with hash 506531791, now seen corresponding path program 1 times
[2020-08-18 19:19:40,417 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 19:19:40,417 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368016702]
[2020-08-18 19:19:40,418 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 19:19:40,673 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:41,096 WARN  L193               SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 19:19:41,098 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 19:19:41,109 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:41,193 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 19:19:41,198 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:41,200 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 19:19:41,203 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:41,206 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 19:19:41,208 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:41,211 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 19:19:41,212 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:41,214 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32
[2020-08-18 19:19:41,216 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:41,224 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2020-08-18 19:19:41,226 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:41,233 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44
[2020-08-18 19:19:41,234 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:41,252 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 19:19:41,253 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368016702]
[2020-08-18 19:19:41,255 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 19:19:41,255 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-08-18 19:19:41,256 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839798028]
[2020-08-18 19:19:41,262 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-08-18 19:19:41,262 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 19:19:41,274 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-08-18 19:19:41,275 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-08-18 19:19:41,277 INFO  L87              Difference]: Start difference. First operand 162 states. Second operand 3 states.
[2020-08-18 19:19:42,366 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 19:19:42,366 INFO  L93              Difference]: Finished difference Result 273 states and 360 transitions.
[2020-08-18 19:19:42,367 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-08-18 19:19:42,368 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 52
[2020-08-18 19:19:42,369 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 19:19:42,383 INFO  L225             Difference]: With dead ends: 273
[2020-08-18 19:19:42,383 INFO  L226             Difference]: Without dead ends: 148
[2020-08-18 19:19:42,387 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-08-18 19:19:42,405 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 148 states.
[2020-08-18 19:19:42,460 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 116.
[2020-08-18 19:19:42,462 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 116 states.
[2020-08-18 19:19:42,463 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 136 transitions.
[2020-08-18 19:19:42,466 INFO  L78                 Accepts]: Start accepts. Automaton has 116 states and 136 transitions. Word has length 52
[2020-08-18 19:19:42,466 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 19:19:42,466 INFO  L479      AbstractCegarLoop]: Abstraction has 116 states and 136 transitions.
[2020-08-18 19:19:42,466 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-08-18 19:19:42,466 INFO  L276                IsEmpty]: Start isEmpty. Operand 116 states and 136 transitions.
[2020-08-18 19:19:42,470 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 54
[2020-08-18 19:19:42,470 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 19:19:42,470 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 19:19:42,471 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-08-18 19:19:42,471 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 19:19:42,471 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 19:19:42,471 INFO  L82        PathProgramCache]: Analyzing trace with hash -1226284601, now seen corresponding path program 1 times
[2020-08-18 19:19:42,472 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 19:19:42,472 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812488137]
[2020-08-18 19:19:42,472 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 19:19:42,512 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:42,822 WARN  L193               SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 19:19:42,823 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 19:19:42,828 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:42,848 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 19:19:42,848 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:42,849 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 19:19:42,850 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:42,851 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 19:19:42,851 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:42,853 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 19:19:42,854 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:42,855 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33
[2020-08-18 19:19:42,855 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:42,856 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39
[2020-08-18 19:19:42,857 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:42,858 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2020-08-18 19:19:42,859 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:42,866 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 19:19:42,866 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812488137]
[2020-08-18 19:19:42,867 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 19:19:42,867 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-08-18 19:19:42,867 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040301031]
[2020-08-18 19:19:42,869 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-08-18 19:19:42,869 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 19:19:42,869 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-08-18 19:19:42,869 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-08-18 19:19:42,870 INFO  L87              Difference]: Start difference. First operand 116 states and 136 transitions. Second operand 4 states.
[2020-08-18 19:19:43,311 WARN  L193               SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-18 19:19:44,106 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 19:19:44,107 INFO  L93              Difference]: Finished difference Result 200 states and 243 transitions.
[2020-08-18 19:19:44,108 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-08-18 19:19:44,108 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 53
[2020-08-18 19:19:44,108 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 19:19:44,113 INFO  L225             Difference]: With dead ends: 200
[2020-08-18 19:19:44,113 INFO  L226             Difference]: Without dead ends: 132
[2020-08-18 19:19:44,115 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-08-18 19:19:44,115 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 132 states.
[2020-08-18 19:19:44,149 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 107.
[2020-08-18 19:19:44,149 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 107 states.
[2020-08-18 19:19:44,150 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 124 transitions.
[2020-08-18 19:19:44,151 INFO  L78                 Accepts]: Start accepts. Automaton has 107 states and 124 transitions. Word has length 53
[2020-08-18 19:19:44,151 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 19:19:44,151 INFO  L479      AbstractCegarLoop]: Abstraction has 107 states and 124 transitions.
[2020-08-18 19:19:44,151 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-08-18 19:19:44,152 INFO  L276                IsEmpty]: Start isEmpty. Operand 107 states and 124 transitions.
[2020-08-18 19:19:44,154 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 58
[2020-08-18 19:19:44,154 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 19:19:44,154 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 19:19:44,154 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-08-18 19:19:44,155 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 19:19:44,155 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 19:19:44,155 INFO  L82        PathProgramCache]: Analyzing trace with hash -860632419, now seen corresponding path program 1 times
[2020-08-18 19:19:44,155 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 19:19:44,156 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [883695025]
[2020-08-18 19:19:44,156 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 19:19:44,188 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:44,498 WARN  L193               SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 19:19:44,499 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 19:19:44,513 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:44,537 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 19:19:44,539 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:44,540 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 19:19:44,541 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:44,542 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 19:19:44,544 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:44,572 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 19:19:44,573 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:44,574 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 19:19:44,575 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:44,577 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43
[2020-08-18 19:19:44,578 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:44,579 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49
[2020-08-18 19:19:44,580 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:44,588 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 19:19:44,588 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [883695025]
[2020-08-18 19:19:44,589 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 19:19:44,589 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-08-18 19:19:44,589 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996750238]
[2020-08-18 19:19:44,590 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-08-18 19:19:44,590 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 19:19:44,590 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-08-18 19:19:44,591 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2020-08-18 19:19:44,591 INFO  L87              Difference]: Start difference. First operand 107 states and 124 transitions. Second operand 8 states.
[2020-08-18 19:19:45,027 WARN  L193               SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-18 19:19:45,338 WARN  L193               SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 19:19:45,617 WARN  L193               SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 19:19:45,833 WARN  L193               SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 19:19:46,641 WARN  L193               SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-18 19:19:48,169 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 19:19:48,169 INFO  L93              Difference]: Finished difference Result 375 states and 465 transitions.
[2020-08-18 19:19:48,170 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-08-18 19:19:48,170 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 57
[2020-08-18 19:19:48,171 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 19:19:48,175 INFO  L225             Difference]: With dead ends: 375
[2020-08-18 19:19:48,176 INFO  L226             Difference]: Without dead ends: 292
[2020-08-18 19:19:48,177 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156
[2020-08-18 19:19:48,178 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 292 states.
[2020-08-18 19:19:48,249 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 238.
[2020-08-18 19:19:48,250 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 238 states.
[2020-08-18 19:19:48,251 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 287 transitions.
[2020-08-18 19:19:48,252 INFO  L78                 Accepts]: Start accepts. Automaton has 238 states and 287 transitions. Word has length 57
[2020-08-18 19:19:48,252 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 19:19:48,252 INFO  L479      AbstractCegarLoop]: Abstraction has 238 states and 287 transitions.
[2020-08-18 19:19:48,252 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-08-18 19:19:48,253 INFO  L276                IsEmpty]: Start isEmpty. Operand 238 states and 287 transitions.
[2020-08-18 19:19:48,255 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 64
[2020-08-18 19:19:48,255 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 19:19:48,256 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 19:19:48,256 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-08-18 19:19:48,256 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 19:19:48,256 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 19:19:48,257 INFO  L82        PathProgramCache]: Analyzing trace with hash -792004887, now seen corresponding path program 1 times
[2020-08-18 19:19:48,257 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 19:19:48,257 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050262216]
[2020-08-18 19:19:48,257 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 19:19:48,295 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:48,568 WARN  L193               SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 19:19:48,570 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 19:19:48,581 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:48,597 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 19:19:48,598 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:48,599 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 19:19:48,600 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:48,601 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 19:19:48,602 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:48,604 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 19:19:48,604 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:48,625 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33
[2020-08-18 19:19:48,627 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:48,628 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43
[2020-08-18 19:19:48,629 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:48,632 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49
[2020-08-18 19:19:48,634 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:48,648 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55
[2020-08-18 19:19:48,649 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:48,658 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 19:19:48,659 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050262216]
[2020-08-18 19:19:48,659 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 19:19:48,659 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-08-18 19:19:48,659 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280065793]
[2020-08-18 19:19:48,660 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-08-18 19:19:48,660 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 19:19:48,660 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-08-18 19:19:48,660 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2020-08-18 19:19:48,661 INFO  L87              Difference]: Start difference. First operand 238 states and 287 transitions. Second operand 8 states.
[2020-08-18 19:19:49,105 WARN  L193               SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-18 19:19:50,435 WARN  L193               SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 19:19:50,744 WARN  L193               SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 19:19:51,008 WARN  L193               SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 19:19:51,257 WARN  L193               SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-18 19:19:51,846 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 19:19:51,846 INFO  L93              Difference]: Finished difference Result 726 states and 953 transitions.
[2020-08-18 19:19:51,847 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-08-18 19:19:51,847 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 63
[2020-08-18 19:19:51,848 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 19:19:51,855 INFO  L225             Difference]: With dead ends: 726
[2020-08-18 19:19:51,855 INFO  L226             Difference]: Without dead ends: 512
[2020-08-18 19:19:51,857 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182
[2020-08-18 19:19:51,861 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 512 states.
[2020-08-18 19:19:51,963 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 449.
[2020-08-18 19:19:51,964 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 449 states.
[2020-08-18 19:19:51,967 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 555 transitions.
[2020-08-18 19:19:51,968 INFO  L78                 Accepts]: Start accepts. Automaton has 449 states and 555 transitions. Word has length 63
[2020-08-18 19:19:51,968 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 19:19:51,968 INFO  L479      AbstractCegarLoop]: Abstraction has 449 states and 555 transitions.
[2020-08-18 19:19:51,969 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-08-18 19:19:51,969 INFO  L276                IsEmpty]: Start isEmpty. Operand 449 states and 555 transitions.
[2020-08-18 19:19:51,972 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2020-08-18 19:19:51,972 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 19:19:51,972 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 19:19:51,973 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-08-18 19:19:51,973 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 19:19:51,973 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 19:19:51,973 INFO  L82        PathProgramCache]: Analyzing trace with hash -328985137, now seen corresponding path program 1 times
[2020-08-18 19:19:51,974 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 19:19:51,974 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090064137]
[2020-08-18 19:19:51,974 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 19:19:51,996 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:52,242 WARN  L193               SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 19:19:52,243 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 19:19:52,255 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:52,270 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 19:19:52,271 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:52,272 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 19:19:52,273 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:52,274 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 19:19:52,275 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:52,276 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 19:19:52,277 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:52,314 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33
[2020-08-18 19:19:52,316 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:52,325 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2020-08-18 19:19:52,327 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:52,328 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47
[2020-08-18 19:19:52,329 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:52,330 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53
[2020-08-18 19:19:52,330 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:52,332 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59
[2020-08-18 19:19:52,332 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:52,341 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 19:19:52,341 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090064137]
[2020-08-18 19:19:52,342 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 19:19:52,342 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-08-18 19:19:52,342 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986489009]
[2020-08-18 19:19:52,343 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-08-18 19:19:52,343 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 19:19:52,343 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-08-18 19:19:52,343 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-08-18 19:19:52,344 INFO  L87              Difference]: Start difference. First operand 449 states and 555 transitions. Second operand 6 states.
[2020-08-18 19:19:52,637 WARN  L193               SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-18 19:19:53,297 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 19:19:53,297 INFO  L93              Difference]: Finished difference Result 761 states and 976 transitions.
[2020-08-18 19:19:53,299 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-08-18 19:19:53,299 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 67
[2020-08-18 19:19:53,299 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 19:19:53,303 INFO  L225             Difference]: With dead ends: 761
[2020-08-18 19:19:53,303 INFO  L226             Difference]: Without dead ends: 336
[2020-08-18 19:19:53,306 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90
[2020-08-18 19:19:53,307 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 336 states.
[2020-08-18 19:19:53,364 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 315.
[2020-08-18 19:19:53,364 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 315 states.
[2020-08-18 19:19:53,366 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 366 transitions.
[2020-08-18 19:19:53,367 INFO  L78                 Accepts]: Start accepts. Automaton has 315 states and 366 transitions. Word has length 67
[2020-08-18 19:19:53,367 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 19:19:53,367 INFO  L479      AbstractCegarLoop]: Abstraction has 315 states and 366 transitions.
[2020-08-18 19:19:53,367 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-08-18 19:19:53,367 INFO  L276                IsEmpty]: Start isEmpty. Operand 315 states and 366 transitions.
[2020-08-18 19:19:53,369 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2020-08-18 19:19:53,369 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 19:19:53,369 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 19:19:53,369 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-08-18 19:19:53,370 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 19:19:53,370 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 19:19:53,370 INFO  L82        PathProgramCache]: Analyzing trace with hash 1802868975, now seen corresponding path program 1 times
[2020-08-18 19:19:53,370 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 19:19:53,370 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221170641]
[2020-08-18 19:19:53,371 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 19:19:53,437 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-08-18 19:19:53,442 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-08-18 19:19:53,442 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-08-18 19:19:53,446 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-08-18 19:19:53,478 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 07:19:53 BoogieIcfgContainer
[2020-08-18 19:19:53,478 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-08-18 19:19:53,481 INFO  L168              Benchmark]: Toolchain (without parser) took 15104.37 ms. Allocated memory was 141.6 MB in the beginning and 471.9 MB in the end (delta: 330.3 MB). Free memory was 103.4 MB in the beginning and 274.0 MB in the end (delta: -170.6 MB). Peak memory consumption was 159.7 MB. Max. memory is 7.1 GB.
[2020-08-18 19:19:53,483 INFO  L168              Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-08-18 19:19:53,490 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 701.58 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 103.2 MB in the beginning and 169.0 MB in the end (delta: -65.8 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB.
[2020-08-18 19:19:53,491 INFO  L168              Benchmark]: Boogie Preprocessor took 88.81 ms. Allocated memory is still 204.5 MB. Free memory was 169.0 MB in the beginning and 165.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB.
[2020-08-18 19:19:53,491 INFO  L168              Benchmark]: RCFGBuilder took 1137.72 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 165.1 MB in the beginning and 189.6 MB in the end (delta: -24.4 MB). Peak memory consumption was 76.9 MB. Max. memory is 7.1 GB.
[2020-08-18 19:19:53,492 INFO  L168              Benchmark]: TraceAbstraction took 13170.33 ms. Allocated memory was 234.9 MB in the beginning and 471.9 MB in the end (delta: 237.0 MB). Free memory was 188.2 MB in the beginning and 274.0 MB in the end (delta: -85.8 MB). Peak memory consumption was 151.2 MB. Max. memory is 7.1 GB.
[2020-08-18 19:19:53,503 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.18 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 701.58 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 103.2 MB in the beginning and 169.0 MB in the end (delta: -65.8 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 88.81 ms. Allocated memory is still 204.5 MB. Free memory was 169.0 MB in the beginning and 165.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 1137.72 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 165.1 MB in the beginning and 189.6 MB in the end (delta: -24.4 MB). Peak memory consumption was 76.9 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 13170.33 ms. Allocated memory was 234.9 MB in the beginning and 471.9 MB in the end (delta: 237.0 MB). Free memory was 188.2 MB in the beginning and 274.0 MB in the end (delta: -85.8 MB). Peak memory consumption was 151.2 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L293]              static struct __ACC__ERR *head  =    (struct __ACC__ERR *)0;
[L490]              int cleanupTimeShifts  =    4;
[L594]              int waterLevel  =    1;
[L595]              int methaneLevelCritical  =    0;
[L753]              int pumpRunning  =    0;
[L754]              int systemActive  =    1;
[L568]              int retValue_acc ;
[L569]              int tmp ;
[L573]  FCALL       select_helpers()
[L574]  FCALL       select_features()
[L575]  CALL, EXPR  valid_product()
[L78]               int retValue_acc ;
[L81]               retValue_acc = 1
[L82]               return (retValue_acc);
[L575]  RET, EXPR   valid_product()
[L575]              tmp = valid_product()
[L577]  COND TRUE   \read(tmp)
[L579]  FCALL       setup()
[L580]  CALL        runTest()
[L562]  CALL        test()
[L685]              int splverifierCounter ;
[L686]              int tmp ;
[L687]              int tmp___0 ;
[L688]              int tmp___1 ;
[L689]              int tmp___2 ;
[L692]              splverifierCounter = 0
[L694]  COND TRUE   1
[L696]  COND TRUE   splverifierCounter < 4
[L702]              tmp = __VERIFIER_nondet_int()
[L704]  COND TRUE   \read(tmp)
[L706]  CALL        waterRise()
[L612]  COND TRUE   waterLevel < 2
[L613]              waterLevel = waterLevel + 1
[L706]  RET         waterRise()
[L712]              tmp___0 = __VERIFIER_nondet_int()
[L714]  COND FALSE  !(\read(tmp___0))
[L722]              tmp___2 = __VERIFIER_nondet_int()
[L724]  COND FALSE  !(\read(tmp___2))
[L728]              tmp___1 = __VERIFIER_nondet_int()
[L730]  COND TRUE   \read(tmp___1)
[L732]  CALL        stopSystem()
[L908]  COND FALSE  !(\read(pumpRunning))
[L915]              systemActive = 0
[L732]  RET         stopSystem()
[L739]  CALL        timeShift()
[L760]  COND FALSE  !(\read(pumpRunning))
[L767]  COND FALSE  !(\read(systemActive))
[L775]  CALL        __utac_acc__Specification3_spec__1()
[L91]               int tmp ;
[L92]               int tmp___0 ;
[L93]               int tmp___1 ;
[L97]   CALL, EXPR  isMethaneLevelCritical()
[L633]              int retValue_acc ;
[L636]              retValue_acc = methaneLevelCritical
[L637]              return (retValue_acc);
[L97]   RET, EXPR   isMethaneLevelCritical()
[L97]               tmp = isMethaneLevelCritical()
[L99]   COND FALSE  !(\read(tmp))
[L103]  CALL, EXPR  getWaterLevel()
[L665]              int retValue_acc ;
[L668]              retValue_acc = waterLevel
[L669]              return (retValue_acc);
[L103]  RET, EXPR   getWaterLevel()
[L103]              tmp___0 = getWaterLevel()
[L105]  COND TRUE   tmp___0 == 2
[L107]  CALL, EXPR  isPumpRunning()
[L841]              int retValue_acc ;
[L844]              retValue_acc = pumpRunning
[L845]              return (retValue_acc);
[L107]  RET, EXPR   isPumpRunning()
[L107]              tmp___1 = isPumpRunning()
[L109]  COND FALSE  !(\read(tmp___1))
[L113]  CALL        __automaton_fail()
[L44]               __VERIFIER_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 38 procedures, 223 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 10.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 508 SDtfs, 877 SDslu, 356 SDs, 0 SdLazy, 1788 SolverSat, 556 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=449occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 195 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 359 NumberOfCodeBlocks, 359 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 287 ConstructedInterpolants, 0 QuantifiedInterpolants, 82182 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...