/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product26.cil.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-24 14:44:02,799 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-24 14:44:02,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 14:44:02,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 14:44:02,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 14:44:02,830 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 14:44:02,831 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 14:44:02,833 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 14:44:02,835 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 14:44:02,836 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 14:44:02,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 14:44:02,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 14:44:02,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 14:44:02,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 14:44:02,841 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 14:44:02,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 14:44:02,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 14:44:02,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 14:44:02,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 14:44:02,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 14:44:02,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 14:44:02,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 14:44:02,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 14:44:02,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 14:44:02,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 14:44:02,856 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 14:44:02,857 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 14:44:02,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 14:44:02,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 14:44:02,859 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 14:44:02,859 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 14:44:02,860 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 14:44:02,861 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 14:44:02,862 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 14:44:02,863 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 14:44:02,863 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 14:44:02,864 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 14:44:02,864 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 14:44:02,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 14:44:02,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 14:44:02,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 14:44:02,867 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
[2020-09-24 14:44:02,902 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-24 14:44:02,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 14:44:02,906 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 14:44:02,906 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-24 14:44:02,906 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-24 14:44:02,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 14:44:02,907 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-24 14:44:02,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-24 14:44:02,910 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-24 14:44:02,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-24 14:44:02,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 14:44:02,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 14:44:02,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 14:44:02,911 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-24 14:44:02,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-24 14:44:02,911 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-24 14:44:02,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-24 14:44:02,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 14:44:02,913 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-24 14:44:02,913 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-24 14:44:02,913 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-24 14:44:02,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 14:44:02,914 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 14:44:02,914 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 14:44:02,914 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 14:44:02,914 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-24 14:44:02,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 14:44:02,915 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 14:44:02,915 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-24 14:44:02,915 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.rcfgbuilder: Size of a code block -> SingleStatement
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false
[2020-09-24 14:44:03,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 14:44:03,394 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 14:44:03,398 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 14:44:03,400 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-24 14:44:03,401 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-24 14:44:03,402 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product26.cil.c
[2020-09-24 14:44:03,497 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50f6d5035/b084accd0c844dc1b3e8a87be3c22e87/FLAG31dedaa06
[2020-09-24 14:44:04,186 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-24 14:44:04,187 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product26.cil.c
[2020-09-24 14:44:04,209 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50f6d5035/b084accd0c844dc1b3e8a87be3c22e87/FLAG31dedaa06
[2020-09-24 14:44:04,381 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50f6d5035/b084accd0c844dc1b3e8a87be3c22e87
[2020-09-24 14:44:04,395 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 14:44:04,402 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 14:44:04,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 14:44:04,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 14:44:04,409 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 14:44:04,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:44:04" (1/1) ...
[2020-09-24 14:44:04,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@387f035d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:44:04, skipping insertion in model container
[2020-09-24 14:44:04,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:44:04" (1/1) ...
[2020-09-24 14:44:04,426 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-24 14:44:04,501 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-24 14:44:04,875 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 14:44:04,984 INFO L203 MainTranslator]: Completed pre-run
[2020-09-24 14:44:05,068 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 14:44:05,107 INFO L208 MainTranslator]: Completed translation
[2020-09-24 14:44:05,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:44:05 WrapperNode
[2020-09-24 14:44:05,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 14:44:05,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 14:44:05,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 14:44:05,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 14:44:05,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:44:05" (1/1) ...
[2020-09-24 14:44:05,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:44:05" (1/1) ...
[2020-09-24 14:44:05,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:44:05" (1/1) ...
[2020-09-24 14:44:05,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:44:05" (1/1) ...
[2020-09-24 14:44:05,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:44:05" (1/1) ...
[2020-09-24 14:44:05,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:44:05" (1/1) ...
[2020-09-24 14:44:05,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:44:05" (1/1) ...
[2020-09-24 14:44:05,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 14:44:05,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 14:44:05,205 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 14:44:05,206 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-24 14:44:05,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:44:05" (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
[2020-09-24 14:44:05,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 14:44:05,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 14:44:05,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-09-24 14:44:05,302 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup
[2020-09-24 14:44:05,303 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2
[2020-09-24 14:44:05,303 INFO L138 BoogieDeclarations]: Found implementation of procedure setup
[2020-09-24 14:44:05,304 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest
[2020-09-24 14:44:05,304 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 14:44:05,304 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one
[2020-09-24 14:44:05,304 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features
[2020-09-24 14:44:05,305 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-09-24 14:44:05,306 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product
[2020-09-24 14:44:05,306 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-09-24 14:44:05,306 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise
[2020-09-24 14:44:05,306 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-09-24 14:44:05,307 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-09-24 14:44:05,307 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-09-24 14:44:05,307 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-09-24 14:44:05,308 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry
[2020-09-24 14:44:05,309 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-09-24 14:44:05,309 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-09-24 14:44:05,309 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-09-24 14:44:05,309 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-09-24 14:44:05,309 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-09-24 14:44:05,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-09-24 14:44:05,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-09-24 14:44:05,311 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift
[2020-09-24 14:44:05,311 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base
[2020-09-24 14:44:05,311 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-09-24 14:44:05,311 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor
[2020-09-24 14:44:05,312 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump
[2020-09-24 14:44:05,312 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-09-24 14:44:05,312 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-09-24 14:44:05,312 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-09-24 14:44:05,312 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump
[2020-09-24 14:44:05,313 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel
[2020-09-24 14:44:05,313 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem
[2020-09-24 14:44:05,313 INFO L138 BoogieDeclarations]: Found implementation of procedure test
[2020-09-24 14:44:05,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1
[2020-09-24 14:44:05,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 14:44:05,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 14:44:05,314 INFO L130 BoogieDeclarations]: Found specification of procedure printf
[2020-09-24 14:44:05,314 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift
[2020-09-24 14:44:05,314 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup
[2020-09-24 14:44:05,314 INFO L130 BoogieDeclarations]: Found specification of procedure printPump
[2020-09-24 14:44:05,314 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise
[2020-09-24 14:44:05,314 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-09-24 14:44:05,314 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2
[2020-09-24 14:44:05,315 INFO L130 BoogieDeclarations]: Found specification of procedure setup
[2020-09-24 14:44:05,315 INFO L130 BoogieDeclarations]: Found specification of procedure test
[2020-09-24 14:44:05,315 INFO L130 BoogieDeclarations]: Found specification of procedure runTest
[2020-09-24 14:44:05,315 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers
[2020-09-24 14:44:05,315 INFO L130 BoogieDeclarations]: Found specification of procedure select_features
[2020-09-24 14:44:05,315 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product
[2020-09-24 14:44:05,316 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-24 14:44:05,316 INFO L130 BoogieDeclarations]: Found specification of procedure select_one
[2020-09-24 14:44:05,316 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-09-24 14:44:05,317 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-09-24 14:44:05,317 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-09-24 14:44:05,317 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-09-24 14:44:05,318 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry
[2020-09-24 14:44:05,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-24 14:44:05,318 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-09-24 14:44:05,318 INFO L130 BoogieDeclarations]: Found specification of procedure malloc
[2020-09-24 14:44:05,318 INFO L130 BoogieDeclarations]: Found specification of procedure free
[2020-09-24 14:44:05,318 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-09-24 14:44:05,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-09-24 14:44:05,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-09-24 14:44:05,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-09-24 14:44:05,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-09-24 14:44:05,319 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-09-24 14:44:05,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-24 14:44:05,320 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-09-24 14:44:05,320 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-09-24 14:44:05,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-09-24 14:44:05,321 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-09-24 14:44:05,321 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-09-24 14:44:05,321 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-09-24 14:44:05,322 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-09-24 14:44:05,322 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump
[2020-09-24 14:44:05,323 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-09-24 14:44:05,323 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-09-24 14:44:05,323 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem
[2020-09-24 14:44:05,323 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1
[2020-09-24 14:44:05,323 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-09-24 14:44:05,324 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base
[2020-09-24 14:44:05,324 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel
[2020-09-24 14:44:05,324 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor
[2020-09-24 14:44:05,324 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-09-24 14:44:05,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 14:44:05,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2020-09-24 14:44:05,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 14:44:06,635 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 14:44:06,635 INFO L295 CfgBuilder]: Removed 5 assume(true) statements.
[2020-09-24 14:44:06,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:44:06 BoogieIcfgContainer
[2020-09-24 14:44:06,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 14:44:06,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 14:44:06,644 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 14:44:06,648 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-24 14:44:06,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:44:04" (1/3) ...
[2020-09-24 14:44:06,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f6f8f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:44:06, skipping insertion in model container
[2020-09-24 14:44:06,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:44:05" (2/3) ...
[2020-09-24 14:44:06,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f6f8f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:44:06, skipping insertion in model container
[2020-09-24 14:44:06,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:44:06" (3/3) ...
[2020-09-24 14:44:06,652 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product26.cil.c
[2020-09-24 14:44:06,663 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 14:44:06,675 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 14:44:06,697 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 14:44:06,731 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-24 14:44:06,731 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-24 14:44:06,731 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 14:44:06,732 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 14:44:06,732 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 14:44:06,732 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-24 14:44:06,732 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 14:44:06,732 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 14:44:06,762 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states.
[2020-09-24 14:44:06,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154
[2020-09-24 14:44:06,780 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 14:44:06,781 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 14:44:06,782 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 14:44:06,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 14:44:06,788 INFO L82 PathProgramCache]: Analyzing trace with hash -502047938, now seen corresponding path program 1 times
[2020-09-24 14:44:06,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 14:44:06,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83525836]
[2020-09-24 14:44:06,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 14:44:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:07,593 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-09-24 14:44:07,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 14:44:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:07,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-09-24 14:44:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:07,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-09-24 14:44:07,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:07,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-09-24 14:44:07,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:07,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-09-24 14:44:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:07,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2020-09-24 14:44:07,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:07,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131
[2020-09-24 14:44:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:07,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141
[2020-09-24 14:44:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:07,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 14:44:07,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83525836]
[2020-09-24 14:44:07,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 14:44:07,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-09-24 14:44:07,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098847502]
[2020-09-24 14:44:07,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-09-24 14:44:07,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 14:44:07,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-09-24 14:44:07,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 14:44:07,812 INFO L87 Difference]: Start difference. First operand 306 states. Second operand 3 states.
[2020-09-24 14:44:09,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 14:44:09,086 INFO L93 Difference]: Finished difference Result 444 states and 527 transitions.
[2020-09-24 14:44:09,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-09-24 14:44:09,089 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153
[2020-09-24 14:44:09,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 14:44:09,109 INFO L225 Difference]: With dead ends: 444
[2020-09-24 14:44:09,110 INFO L226 Difference]: Without dead ends: 279
[2020-09-24 14:44:09,116 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
[2020-09-24 14:44:09,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states.
[2020-09-24 14:44:09,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 239.
[2020-09-24 14:44:09,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states.
[2020-09-24 14:44:09,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 257 transitions.
[2020-09-24 14:44:09,220 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 257 transitions. Word has length 153
[2020-09-24 14:44:09,221 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 14:44:09,221 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 257 transitions.
[2020-09-24 14:44:09,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-09-24 14:44:09,222 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 257 transitions.
[2020-09-24 14:44:09,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155
[2020-09-24 14:44:09,227 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 14:44:09,227 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 14:44:09,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 14:44:09,228 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 14:44:09,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 14:44:09,228 INFO L82 PathProgramCache]: Analyzing trace with hash -394974432, now seen corresponding path program 1 times
[2020-09-24 14:44:09,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 14:44:09,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274970405]
[2020-09-24 14:44:09,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 14:44:09,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:09,723 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-09-24 14:44:09,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 14:44:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:09,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-09-24 14:44:09,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:09,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-09-24 14:44:09,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:09,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-09-24 14:44:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:09,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-09-24 14:44:09,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:09,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122
[2020-09-24 14:44:09,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:09,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132
[2020-09-24 14:44:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:09,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142
[2020-09-24 14:44:09,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:09,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 14:44:09,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274970405]
[2020-09-24 14:44:09,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 14:44:09,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-24 14:44:09,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472924384]
[2020-09-24 14:44:09,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-24 14:44:09,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 14:44:09,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-24 14:44:09,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-24 14:44:09,822 INFO L87 Difference]: Start difference. First operand 239 states and 257 transitions. Second operand 4 states.
[2020-09-24 14:44:10,612 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-09-24 14:44:11,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 14:44:11,469 INFO L93 Difference]: Finished difference Result 357 states and 398 transitions.
[2020-09-24 14:44:11,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2020-09-24 14:44:11,470 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154
[2020-09-24 14:44:11,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 14:44:11,474 INFO L225 Difference]: With dead ends: 357
[2020-09-24 14:44:11,475 INFO L226 Difference]: Without dead ends: 262
[2020-09-24 14:44:11,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-09-24 14:44:11,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states.
[2020-09-24 14:44:11,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 229.
[2020-09-24 14:44:11,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states.
[2020-09-24 14:44:11,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 244 transitions.
[2020-09-24 14:44:11,541 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 244 transitions. Word has length 154
[2020-09-24 14:44:11,541 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 14:44:11,542 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 244 transitions.
[2020-09-24 14:44:11,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-24 14:44:11,542 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 244 transitions.
[2020-09-24 14:44:11,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168
[2020-09-24 14:44:11,545 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 14:44:11,545 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 14:44:11,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 14:44:11,546 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 14:44:11,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 14:44:11,546 INFO L82 PathProgramCache]: Analyzing trace with hash 334647312, now seen corresponding path program 1 times
[2020-09-24 14:44:11,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 14:44:11,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488516978]
[2020-09-24 14:44:11,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 14:44:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:11,946 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-09-24 14:44:11,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 14:44:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:11,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-09-24 14:44:11,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:11,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-09-24 14:44:11,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:11,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-09-24 14:44:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:12,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-09-24 14:44:12,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:12,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124
[2020-09-24 14:44:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:12,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135
[2020-09-24 14:44:12,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:12,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145
[2020-09-24 14:44:12,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:12,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155
[2020-09-24 14:44:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:12,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 14:44:12,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488516978]
[2020-09-24 14:44:12,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 14:44:12,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2020-09-24 14:44:12,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224383017]
[2020-09-24 14:44:12,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-09-24 14:44:12,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 14:44:12,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-09-24 14:44:12,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90
[2020-09-24 14:44:12,106 INFO L87 Difference]: Start difference. First operand 229 states and 244 transitions. Second operand 10 states.
[2020-09-24 14:44:12,696 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 14:44:13,114 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-09-24 14:44:13,422 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 192
[2020-09-24 14:44:13,752 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 14:44:14,073 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-09-24 14:44:14,376 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 14:44:15,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 14:44:15,965 INFO L93 Difference]: Finished difference Result 403 states and 460 transitions.
[2020-09-24 14:44:15,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2020-09-24 14:44:15,966 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 167
[2020-09-24 14:44:15,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 14:44:15,970 INFO L225 Difference]: With dead ends: 403
[2020-09-24 14:44:15,970 INFO L226 Difference]: Without dead ends: 284
[2020-09-24 14:44:15,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272
[2020-09-24 14:44:15,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states.
[2020-09-24 14:44:16,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 229.
[2020-09-24 14:44:16,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states.
[2020-09-24 14:44:16,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 243 transitions.
[2020-09-24 14:44:16,007 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 243 transitions. Word has length 167
[2020-09-24 14:44:16,008 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 14:44:16,008 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 243 transitions.
[2020-09-24 14:44:16,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-09-24 14:44:16,008 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 243 transitions.
[2020-09-24 14:44:16,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176
[2020-09-24 14:44:16,011 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 14:44:16,011 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 14:44:16,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-24 14:44:16,012 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 14:44:16,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 14:44:16,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1802535089, now seen corresponding path program 1 times
[2020-09-24 14:44:16,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 14:44:16,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380767321]
[2020-09-24 14:44:16,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 14:44:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:16,413 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-09-24 14:44:16,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 14:44:16,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:16,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-09-24 14:44:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:16,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-09-24 14:44:16,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:16,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-09-24 14:44:16,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:16,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-09-24 14:44:16,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:16,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124
[2020-09-24 14:44:16,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:16,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131
[2020-09-24 14:44:16,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:16,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 14:44:16,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:16,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143
[2020-09-24 14:44:16,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:16,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153
[2020-09-24 14:44:16,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:16,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163
[2020-09-24 14:44:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:16,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 14:44:16,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380767321]
[2020-09-24 14:44:16,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 14:44:16,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2020-09-24 14:44:16,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255994457]
[2020-09-24 14:44:16,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-09-24 14:44:16,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 14:44:16,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-09-24 14:44:16,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90
[2020-09-24 14:44:16,598 INFO L87 Difference]: Start difference. First operand 229 states and 243 transitions. Second operand 10 states.
[2020-09-24 14:44:17,154 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 14:44:18,817 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 14:44:19,176 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-09-24 14:44:19,604 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 14:44:19,947 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 14:44:20,234 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-09-24 14:44:20,581 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 14:44:20,872 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 14:44:21,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 14:44:21,934 INFO L93 Difference]: Finished difference Result 625 states and 767 transitions.
[2020-09-24 14:44:21,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2020-09-24 14:44:21,934 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 175
[2020-09-24 14:44:21,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 14:44:21,941 INFO L225 Difference]: With dead ends: 625
[2020-09-24 14:44:21,941 INFO L226 Difference]: Without dead ends: 506
[2020-09-24 14:44:21,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462
[2020-09-24 14:44:21,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states.
[2020-09-24 14:44:22,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 340.
[2020-09-24 14:44:22,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states.
[2020-09-24 14:44:22,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 371 transitions.
[2020-09-24 14:44:22,011 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 371 transitions. Word has length 175
[2020-09-24 14:44:22,012 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 14:44:22,012 INFO L479 AbstractCegarLoop]: Abstraction has 340 states and 371 transitions.
[2020-09-24 14:44:22,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-09-24 14:44:22,012 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 371 transitions.
[2020-09-24 14:44:22,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181
[2020-09-24 14:44:22,015 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 14:44:22,016 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 14:44:22,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-24 14:44:22,016 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 14:44:22,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 14:44:22,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1644182753, now seen corresponding path program 1 times
[2020-09-24 14:44:22,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 14:44:22,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471670029]
[2020-09-24 14:44:22,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 14:44:22,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:22,368 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-09-24 14:44:22,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 14:44:22,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:22,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-09-24 14:44:22,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:22,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-09-24 14:44:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:22,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-09-24 14:44:22,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:22,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-09-24 14:44:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:22,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124
[2020-09-24 14:44:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:22,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130
[2020-09-24 14:44:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:22,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136
[2020-09-24 14:44:22,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:22,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 14:44:22,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:22,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148
[2020-09-24 14:44:22,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:22,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158
[2020-09-24 14:44:22,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:22,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168
[2020-09-24 14:44:22,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:44:22,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 14:44:22,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471670029]
[2020-09-24 14:44:22,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 14:44:22,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-09-24 14:44:22,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51916217]
[2020-09-24 14:44:22,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-24 14:44:22,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 14:44:22,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-24 14:44:22,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-09-24 14:44:22,591 INFO L87 Difference]: Start difference. First operand 340 states and 371 transitions. Second operand 7 states.
[2020-09-24 14:44:23,131 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 14:44:24,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 14:44:24,030 INFO L93 Difference]: Finished difference Result 562 states and 650 transitions.
[2020-09-24 14:44:24,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2020-09-24 14:44:24,030 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 180
[2020-09-24 14:44:24,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 14:44:24,033 INFO L225 Difference]: With dead ends: 562
[2020-09-24 14:44:24,033 INFO L226 Difference]: Without dead ends: 332
[2020-09-24 14:44:24,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210
[2020-09-24 14:44:24,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states.
[2020-09-24 14:44:24,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 266.
[2020-09-24 14:44:24,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states.
[2020-09-24 14:44:24,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 281 transitions.
[2020-09-24 14:44:24,070 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 281 transitions. Word has length 180
[2020-09-24 14:44:24,070 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 14:44:24,070 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 281 transitions.
[2020-09-24 14:44:24,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-09-24 14:44:24,071 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 281 transitions.
[2020-09-24 14:44:24,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181
[2020-09-24 14:44:24,073 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 14:44:24,073 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 14:44:24,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-09-24 14:44:24,074 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 14:44:24,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 14:44:24,074 INFO L82 PathProgramCache]: Analyzing trace with hash 74620443, now seen corresponding path program 1 times
[2020-09-24 14:44:24,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 14:44:24,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835991570]
[2020-09-24 14:44:24,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 14:44:24,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-24 14:44:24,154 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-24 14:44:24,154 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-09-24 14:44:24,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-09-24 14:44:24,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 02:44:24 BoogieIcfgContainer
[2020-09-24 14:44:24,191 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-24 14:44:24,193 INFO L168 Benchmark]: Toolchain (without parser) took 19796.61 ms. Allocated memory was 136.8 MB in the beginning and 556.8 MB in the end (delta: 420.0 MB). Free memory was 99.3 MB in the beginning and 356.9 MB in the end (delta: -257.6 MB). Peak memory consumption was 162.4 MB. Max. memory is 7.1 GB.
[2020-09-24 14:44:24,194 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 136.8 MB. Free memory was 118.4 MB in the beginning and 117.9 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB.
[2020-09-24 14:44:24,195 INFO L168 Benchmark]: CACSL2BoogieTranslator took 702.97 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 98.4 MB in the beginning and 170.1 MB in the end (delta: -71.7 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB.
[2020-09-24 14:44:24,196 INFO L168 Benchmark]: Boogie Preprocessor took 96.65 ms. Allocated memory is still 200.3 MB. Free memory was 170.1 MB in the beginning and 165.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB.
[2020-09-24 14:44:24,197 INFO L168 Benchmark]: RCFGBuilder took 1437.39 ms. Allocated memory was 200.3 MB in the beginning and 228.6 MB in the end (delta: 28.3 MB). Free memory was 165.8 MB in the beginning and 176.1 MB in the end (delta: -10.3 MB). Peak memory consumption was 90.3 MB. Max. memory is 7.1 GB.
[2020-09-24 14:44:24,198 INFO L168 Benchmark]: TraceAbstraction took 17547.08 ms. Allocated memory was 228.6 MB in the beginning and 556.8 MB in the end (delta: 328.2 MB). Free memory was 176.1 MB in the beginning and 356.9 MB in the end (delta: -180.7 MB). Peak memory consumption was 147.5 MB. Max. memory is 7.1 GB.
[2020-09-24 14:44:24,202 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.23 ms. Allocated memory is still 136.8 MB. Free memory was 118.4 MB in the beginning and 117.9 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 702.97 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 98.4 MB in the beginning and 170.1 MB in the end (delta: -71.7 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 96.65 ms. Allocated memory is still 200.3 MB. Free memory was 170.1 MB in the beginning and 165.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 1437.39 ms. Allocated memory was 200.3 MB in the beginning and 228.6 MB in the end (delta: 28.3 MB). Free memory was 165.8 MB in the beginning and 176.1 MB in the end (delta: -10.3 MB). Peak memory consumption was 90.3 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 17547.08 ms. Allocated memory was 228.6 MB in the beginning and 556.8 MB in the end (delta: 328.2 MB). Free memory was 176.1 MB in the beginning and 356.9 MB in the end (delta: -180.7 MB). Peak memory consumption was 147.5 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- CounterExampleResult [Line: 643]: a call of __VERIFIER_error() is reachable
a call of __VERIFIER_error() is reachable
We found a FailurePath:
[L40] int cleanupTimeShifts = 4;
[L184] int waterLevel = 1;
[L185] int methaneLevelCritical = 0;
[L442] static struct __ACC__ERR *head = (struct __ACC__ERR *)0;
[L652] int pumpRunning = 0;
[L653] int systemActive = 1;
[L121] int retValue_acc ;
[L122] int tmp ;
[L126] FCALL select_helpers()
[L127] FCALL select_features()
[L128] CALL, EXPR valid_product()
[L170] int retValue_acc ;
[L173] retValue_acc = 1
[L174] return (retValue_acc);
[L128] RET, EXPR valid_product()
[L128] tmp = valid_product()
[L130] COND TRUE \read(tmp)
[L132] FCALL setup()
[L133] CALL runTest()
[L112] CALL test()
[L832] int splverifierCounter ;
[L833] int tmp ;
[L834] int tmp___0 ;
[L835] int tmp___1 ;
[L836] int tmp___2 ;
[L839] splverifierCounter = 0
[L841] COND TRUE 1
[L843] COND TRUE splverifierCounter < 4
[L849] tmp = __VERIFIER_nondet_int()
[L851] COND TRUE \read(tmp)
[L853] CALL waterRise()
[L202] COND TRUE waterLevel < 2
[L203] waterLevel = waterLevel + 1
[L853] RET waterRise()
[L859] tmp___0 = __VERIFIER_nondet_int()
[L861] COND FALSE !(\read(tmp___0))
[L869] tmp___2 = __VERIFIER_nondet_int()
[L871] COND TRUE \read(tmp___2)
[L873] CALL startSystem()
[L826] systemActive = 1
[L873] RET startSystem()
[L886] CALL timeShift()
[L660] COND FALSE !(\read(pumpRunning))
[L667] COND TRUE \read(systemActive)
[L669] CALL processEnvironment()
[L689] int tmp ;
[L692] COND FALSE !(\read(pumpRunning))
[L707] FCALL processEnvironment__wrappee__base()
[L669] RET processEnvironment()
[L675] CALL __utac_acc__Specification3_spec__1()
[L899] int tmp ;
[L900] int tmp___0 ;
[L901] int tmp___1 ;
[L905] CALL, EXPR isMethaneLevelCritical()
[L223] int retValue_acc ;
[L226] retValue_acc = methaneLevelCritical
[L227] return (retValue_acc);
[L905] RET, EXPR isMethaneLevelCritical()
[L905] tmp = isMethaneLevelCritical()
[L907] COND FALSE !(\read(tmp))
[L911] CALL, EXPR getWaterLevel()
[L255] int retValue_acc ;
[L258] retValue_acc = waterLevel
[L259] return (retValue_acc);
[L911] RET, EXPR getWaterLevel()
[L911] tmp___0 = getWaterLevel()
[L913] COND TRUE tmp___0 == 2
[L915] CALL, EXPR isPumpRunning()
[L759] int retValue_acc ;
[L762] retValue_acc = pumpRunning
[L763] return (retValue_acc);
[L915] RET, EXPR isPumpRunning()
[L915] tmp___1 = isPumpRunning()
[L917] COND FALSE !(\read(tmp___1))
[L921] CALL __automaton_fail()
[L643] __VERIFIER_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 39 procedures, 622 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 17.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 13.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1055 SDtfs, 1932 SDslu, 1369 SDs, 0 SdLazy, 2719 SolverSat, 589 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 164 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=340occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 360 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 1009 NumberOfCodeBlocks, 1009 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 824 ConstructedInterpolants, 0 QuantifiedInterpolants, 331556 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...