/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product17.cil.c


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


This is Ultimate 0.1.25-177f698
[2020-08-21 18:46:40,069 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-08-21 18:46:40,072 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-08-21 18:46:40,097 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-08-21 18:46:40,098 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-08-21 18:46:40,099 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-08-21 18:46:40,100 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-08-21 18:46:40,102 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-08-21 18:46:40,104 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-08-21 18:46:40,105 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-08-21 18:46:40,106 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-08-21 18:46:40,107 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-08-21 18:46:40,107 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-08-21 18:46:40,108 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-08-21 18:46:40,109 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-08-21 18:46:40,110 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-08-21 18:46:40,111 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-08-21 18:46:40,112 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-08-21 18:46:40,114 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-08-21 18:46:40,115 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-08-21 18:46:40,117 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-08-21 18:46:40,118 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-08-21 18:46:40,123 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-08-21 18:46:40,123 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-08-21 18:46:40,127 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-08-21 18:46:40,127 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-08-21 18:46:40,127 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-08-21 18:46:40,130 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-08-21 18:46:40,130 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-08-21 18:46:40,134 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-08-21 18:46:40,134 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-08-21 18:46:40,135 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-08-21 18:46:40,135 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-08-21 18:46:40,138 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-08-21 18:46:40,139 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-08-21 18:46:40,140 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-08-21 18:46:40,140 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-08-21 18:46:40,141 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-08-21 18:46:40,141 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-08-21 18:46:40,142 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-08-21 18:46:40,144 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-08-21 18:46:40,145 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
[2020-08-21 18:46:40,199 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-08-21 18:46:40,200 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-08-21 18:46:40,201 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-08-21 18:46:40,201 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-08-21 18:46:40,202 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-08-21 18:46:40,202 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-08-21 18:46:40,202 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-08-21 18:46:40,202 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-08-21 18:46:40,202 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-08-21 18:46:40,202 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-08-21 18:46:40,202 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-08-21 18:46:40,203 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-08-21 18:46:40,206 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-08-21 18:46:40,206 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-08-21 18:46:40,206 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-08-21 18:46:40,206 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-08-21 18:46:40,207 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-08-21 18:46:40,207 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-08-21 18:46:40,207 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-08-21 18:46:40,207 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-08-21 18:46:40,207 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-08-21 18:46:40,208 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-21 18:46:40,208 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-08-21 18:46:40,208 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-08-21 18:46:40,208 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-08-21 18:46:40,208 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-08-21 18:46:40,209 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-08-21 18:46:40,209 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-08-21 18:46:40,209 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-08-21 18:46:40,209 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=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true;
[2020-08-21 18:46:40,510 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-08-21 18:46:40,531 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-08-21 18:46:40,534 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-08-21 18:46:40,537 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-08-21 18:46:40,537 INFO  L275        PluginConnector]: CDTParser initialized
[2020-08-21 18:46:40,538 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product17.cil.c
[2020-08-21 18:46:40,611 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74e28ecbb/6c17af59fed44c8dbf66b9f865ed228d/FLAG3c4d7981c
[2020-08-21 18:46:41,195 INFO  L306              CDTParser]: Found 1 translation units.
[2020-08-21 18:46:41,196 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product17.cil.c
[2020-08-21 18:46:41,213 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74e28ecbb/6c17af59fed44c8dbf66b9f865ed228d/FLAG3c4d7981c
[2020-08-21 18:46:41,434 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74e28ecbb/6c17af59fed44c8dbf66b9f865ed228d
[2020-08-21 18:46:41,444 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-08-21 18:46:41,446 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-08-21 18:46:41,447 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-08-21 18:46:41,448 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-08-21 18:46:41,451 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-08-21 18:46:41,453 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:46:41" (1/1) ...
[2020-08-21 18:46:41,456 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7035d330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:46:41, skipping insertion in model container
[2020-08-21 18:46:41,457 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:46:41" (1/1) ...
[2020-08-21 18:46:41,465 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-08-21 18:46:41,525 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-08-21 18:46:42,035 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-21 18:46:42,047 INFO  L203         MainTranslator]: Completed pre-run
[2020-08-21 18:46:42,136 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-21 18:46:42,177 INFO  L208         MainTranslator]: Completed translation
[2020-08-21 18:46:42,178 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:46:42 WrapperNode
[2020-08-21 18:46:42,178 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-08-21 18:46:42,179 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-08-21 18:46:42,179 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-08-21 18:46:42,179 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-08-21 18:46:42,194 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:46:42" (1/1) ...
[2020-08-21 18:46:42,194 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:46:42" (1/1) ...
[2020-08-21 18:46:42,213 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:46:42" (1/1) ...
[2020-08-21 18:46:42,213 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:46:42" (1/1) ...
[2020-08-21 18:46:42,241 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:46:42" (1/1) ...
[2020-08-21 18:46:42,251 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:46:42" (1/1) ...
[2020-08-21 18:46:42,257 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:46:42" (1/1) ...
[2020-08-21 18:46:42,265 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-08-21 18:46:42,265 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-08-21 18:46:42,266 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-08-21 18:46:42,266 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-08-21 18:46:42,267 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:46:42" (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
[2020-08-21 18:46:42,325 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-08-21 18:46:42,326 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-08-21 18:46:42,326 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-08-21 18:46:42,326 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-08-21 18:46:42,326 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-08-21 18:46:42,326 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-08-21 18:46:42,326 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-08-21 18:46:42,327 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-08-21 18:46:42,327 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-08-21 18:46:42,327 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-08-21 18:46:42,327 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-08-21 18:46:42,327 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-08-21 18:46:42,327 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-08-21 18:46:42,328 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-08-21 18:46:42,328 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-08-21 18:46:42,328 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry
[2020-08-21 18:46:42,328 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-08-21 18:46:42,328 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-08-21 18:46:42,328 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-08-21 18:46:42,328 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base
[2020-08-21 18:46:42,329 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-08-21 18:46:42,329 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-08-21 18:46:42,329 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-08-21 18:46:42,329 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-08-21 18:46:42,329 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-08-21 18:46:42,329 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-08-21 18:46:42,330 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterLevel
[2020-08-21 18:46:42,330 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-08-21 18:46:42,330 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-08-21 18:46:42,330 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-08-21 18:46:42,330 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-08-21 18:46:42,330 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-08-21 18:46:42,330 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-08-21 18:46:42,331 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-08-21 18:46:42,331 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-08-21 18:46:42,331 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-08-21 18:46:42,331 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1
[2020-08-21 18:46:42,331 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-08-21 18:46:42,332 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-08-21 18:46:42,332 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-08-21 18:46:42,332 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-08-21 18:46:42,332 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-08-21 18:46:42,332 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-08-21 18:46:42,332 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-08-21 18:46:42,333 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-08-21 18:46:42,333 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-08-21 18:46:42,333 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-08-21 18:46:42,333 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-08-21 18:46:42,333 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-08-21 18:46:42,333 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-08-21 18:46:42,334 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-08-21 18:46:42,334 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-08-21 18:46:42,334 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-08-21 18:46:42,334 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-08-21 18:46:42,334 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-08-21 18:46:42,334 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-08-21 18:46:42,334 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-08-21 18:46:42,335 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-08-21 18:46:42,335 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-08-21 18:46:42,335 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-08-21 18:46:42,335 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-08-21 18:46:42,335 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-08-21 18:46:42,335 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-08-21 18:46:42,336 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry
[2020-08-21 18:46:42,336 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-08-21 18:46:42,336 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-08-21 18:46:42,336 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-08-21 18:46:42,336 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-08-21 18:46:42,336 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-08-21 18:46:42,337 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-08-21 18:46:42,337 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-08-21 18:46:42,337 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-08-21 18:46:42,337 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1
[2020-08-21 18:46:42,337 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-08-21 18:46:42,337 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base
[2020-08-21 18:46:42,337 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterLevel
[2020-08-21 18:46:42,338 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-08-21 18:46:42,338 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-08-21 18:46:42,338 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-08-21 18:46:42,338 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-08-21 18:46:42,338 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-08-21 18:46:42,338 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-08-21 18:46:42,339 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-08-21 18:46:42,339 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-08-21 18:46:42,339 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-08-21 18:46:42,339 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-08-21 18:46:42,339 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-08-21 18:46:42,339 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-08-21 18:46:43,473 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-08-21 18:46:43,473 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-08-21 18:46:43,478 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:46:43 BoogieIcfgContainer
[2020-08-21 18:46:43,479 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-08-21 18:46:43,480 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-08-21 18:46:43,480 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-08-21 18:46:43,484 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-08-21 18:46:43,484 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:46:41" (1/3) ...
[2020-08-21 18:46:43,485 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d8521b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:46:43, skipping insertion in model container
[2020-08-21 18:46:43,485 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:46:42" (2/3) ...
[2020-08-21 18:46:43,486 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d8521b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:46:43, skipping insertion in model container
[2020-08-21 18:46:43,486 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:46:43" (3/3) ...
[2020-08-21 18:46:43,488 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec3_product17.cil.c
[2020-08-21 18:46:43,499 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-08-21 18:46:43,509 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-08-21 18:46:43,524 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-08-21 18:46:43,550 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-08-21 18:46:43,551 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-08-21 18:46:43,551 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-08-21 18:46:43,551 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-08-21 18:46:43,552 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-08-21 18:46:43,552 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-08-21 18:46:43,552 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-08-21 18:46:43,553 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-08-21 18:46:43,577 INFO  L276                IsEmpty]: Start isEmpty. Operand 156 states.
[2020-08-21 18:46:43,587 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2020-08-21 18:46:43,588 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 18:46:43,589 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]
[2020-08-21 18:46:43,590 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 18:46:43,596 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 18:46:43,596 INFO  L82        PathProgramCache]: Analyzing trace with hash 1926070200, now seen corresponding path program 1 times
[2020-08-21 18:46:43,606 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 18:46:43,606 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106732964]
[2020-08-21 18:46:43,607 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 18:46:43,920 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:44,335 WARN  L193               SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-21 18:46:44,337 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 18:46:44,348 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:44,387 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 18:46:44,388 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:44,394 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 18:46:44,395 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:44,396 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 18:46:44,397 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:44,399 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 18:46:44,400 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:44,402 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32
[2020-08-21 18:46:44,403 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:44,405 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2020-08-21 18:46:44,406 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:44,408 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44
[2020-08-21 18:46:44,409 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:44,426 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 18:46:44,427 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106732964]
[2020-08-21 18:46:44,430 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 18:46:44,430 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-08-21 18:46:44,431 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537944488]
[2020-08-21 18:46:44,437 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-08-21 18:46:44,438 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 18:46:44,452 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-08-21 18:46:44,453 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-08-21 18:46:44,456 INFO  L87              Difference]: Start difference. First operand 156 states. Second operand 3 states.
[2020-08-21 18:46:45,542 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 18:46:45,542 INFO  L93              Difference]: Finished difference Result 259 states and 341 transitions.
[2020-08-21 18:46:45,543 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-08-21 18:46:45,545 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 52
[2020-08-21 18:46:45,546 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 18:46:45,562 INFO  L225             Difference]: With dead ends: 259
[2020-08-21 18:46:45,562 INFO  L226             Difference]: Without dead ends: 140
[2020-08-21 18:46:45,567 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-08-21 18:46:45,589 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 140 states.
[2020-08-21 18:46:45,655 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 110.
[2020-08-21 18:46:45,656 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 110 states.
[2020-08-21 18:46:45,658 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 128 transitions.
[2020-08-21 18:46:45,660 INFO  L78                 Accepts]: Start accepts. Automaton has 110 states and 128 transitions. Word has length 52
[2020-08-21 18:46:45,661 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 18:46:45,661 INFO  L479      AbstractCegarLoop]: Abstraction has 110 states and 128 transitions.
[2020-08-21 18:46:45,661 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-08-21 18:46:45,661 INFO  L276                IsEmpty]: Start isEmpty. Operand 110 states and 128 transitions.
[2020-08-21 18:46:45,665 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 54
[2020-08-21 18:46:45,665 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 18:46:45,665 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]
[2020-08-21 18:46:45,665 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-08-21 18:46:45,666 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 18:46:45,666 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 18:46:45,666 INFO  L82        PathProgramCache]: Analyzing trace with hash 475112747, now seen corresponding path program 1 times
[2020-08-21 18:46:45,667 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 18:46:45,667 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967675998]
[2020-08-21 18:46:45,667 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 18:46:45,711 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:45,994 WARN  L193               SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-21 18:46:45,995 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 18:46:46,000 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:46,042 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 18:46:46,042 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:46,043 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 18:46:46,044 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:46,045 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 18:46:46,045 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:46,047 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 18:46:46,047 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:46,048 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33
[2020-08-21 18:46:46,049 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:46,050 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39
[2020-08-21 18:46:46,051 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:46,052 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2020-08-21 18:46:46,053 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:46,061 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 18:46:46,062 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967675998]
[2020-08-21 18:46:46,062 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 18:46:46,062 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-08-21 18:46:46,062 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853133208]
[2020-08-21 18:46:46,064 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-08-21 18:46:46,064 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 18:46:46,065 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-08-21 18:46:46,065 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-08-21 18:46:46,065 INFO  L87              Difference]: Start difference. First operand 110 states and 128 transitions. Second operand 4 states.
[2020-08-21 18:46:46,474 WARN  L193               SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-21 18:46:47,118 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 18:46:47,118 INFO  L93              Difference]: Finished difference Result 192 states and 232 transitions.
[2020-08-21 18:46:47,119 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-08-21 18:46:47,119 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 53
[2020-08-21 18:46:47,119 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 18:46:47,122 INFO  L225             Difference]: With dead ends: 192
[2020-08-21 18:46:47,122 INFO  L226             Difference]: Without dead ends: 124
[2020-08-21 18:46:47,123 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-08-21 18:46:47,124 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 124 states.
[2020-08-21 18:46:47,155 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 101.
[2020-08-21 18:46:47,155 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 101 states.
[2020-08-21 18:46:47,156 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 116 transitions.
[2020-08-21 18:46:47,156 INFO  L78                 Accepts]: Start accepts. Automaton has 101 states and 116 transitions. Word has length 53
[2020-08-21 18:46:47,157 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 18:46:47,157 INFO  L479      AbstractCegarLoop]: Abstraction has 101 states and 116 transitions.
[2020-08-21 18:46:47,157 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-08-21 18:46:47,158 INFO  L276                IsEmpty]: Start isEmpty. Operand 101 states and 116 transitions.
[2020-08-21 18:46:47,160 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 58
[2020-08-21 18:46:47,160 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 18:46:47,160 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]
[2020-08-21 18:46:47,160 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-08-21 18:46:47,160 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 18:46:47,161 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 18:46:47,161 INFO  L82        PathProgramCache]: Analyzing trace with hash 40226853, now seen corresponding path program 1 times
[2020-08-21 18:46:47,161 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 18:46:47,162 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778810104]
[2020-08-21 18:46:47,162 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 18:46:47,205 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:47,507 WARN  L193               SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-21 18:46:47,508 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 18:46:47,523 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:47,546 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 18:46:47,547 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:47,549 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 18:46:47,549 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:47,551 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 18:46:47,552 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:47,587 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 18:46:47,588 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:47,590 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-21 18:46:47,591 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:47,592 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43
[2020-08-21 18:46:47,593 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:47,595 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49
[2020-08-21 18:46:47,596 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:47,608 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 18:46:47,609 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778810104]
[2020-08-21 18:46:47,609 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 18:46:47,609 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-08-21 18:46:47,610 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486446884]
[2020-08-21 18:46:47,611 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-08-21 18:46:47,611 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 18:46:47,612 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-08-21 18:46:47,616 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2020-08-21 18:46:47,616 INFO  L87              Difference]: Start difference. First operand 101 states and 116 transitions. Second operand 8 states.
[2020-08-21 18:46:48,003 WARN  L193               SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-21 18:46:48,290 WARN  L193               SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 18:46:48,544 WARN  L193               SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 18:46:48,811 WARN  L193               SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 18:46:49,786 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 18:46:49,786 INFO  L93              Difference]: Finished difference Result 201 states and 246 transitions.
[2020-08-21 18:46:49,787 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-08-21 18:46:49,787 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 57
[2020-08-21 18:46:49,787 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 18:46:49,791 INFO  L225             Difference]: With dead ends: 201
[2020-08-21 18:46:49,795 INFO  L226             Difference]: Without dead ends: 124
[2020-08-21 18:46:49,796 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-08-21 18:46:49,800 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 124 states.
[2020-08-21 18:46:49,832 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 101.
[2020-08-21 18:46:49,832 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 101 states.
[2020-08-21 18:46:49,833 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 115 transitions.
[2020-08-21 18:46:49,833 INFO  L78                 Accepts]: Start accepts. Automaton has 101 states and 115 transitions. Word has length 57
[2020-08-21 18:46:49,834 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 18:46:49,834 INFO  L479      AbstractCegarLoop]: Abstraction has 101 states and 115 transitions.
[2020-08-21 18:46:49,834 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-08-21 18:46:49,834 INFO  L276                IsEmpty]: Start isEmpty. Operand 101 states and 115 transitions.
[2020-08-21 18:46:49,836 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 66
[2020-08-21 18:46:49,836 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 18:46:49,836 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-21 18:46:49,836 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-08-21 18:46:49,837 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 18:46:49,837 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 18:46:49,837 INFO  L82        PathProgramCache]: Analyzing trace with hash 1164680110, now seen corresponding path program 1 times
[2020-08-21 18:46:49,837 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 18:46:49,838 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927201844]
[2020-08-21 18:46:49,838 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 18:46:49,869 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:50,113 WARN  L193               SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-21 18:46:50,114 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 18:46:50,129 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:50,145 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 18:46:50,146 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:50,147 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 18:46:50,148 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:50,149 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 18:46:50,150 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:50,152 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 18:46:50,152 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:50,167 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35
[2020-08-21 18:46:50,168 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:50,171 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:46:50,171 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:50,172 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2020-08-21 18:46:50,173 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:50,174 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2020-08-21 18:46:50,175 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:50,186 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57
[2020-08-21 18:46:50,187 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:50,197 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 18:46:50,198 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927201844]
[2020-08-21 18:46:50,198 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 18:46:50,198 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-08-21 18:46:50,198 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63161812]
[2020-08-21 18:46:50,199 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-08-21 18:46:50,199 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 18:46:50,199 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-08-21 18:46:50,200 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2020-08-21 18:46:50,200 INFO  L87              Difference]: Start difference. First operand 101 states and 115 transitions. Second operand 8 states.
[2020-08-21 18:46:50,566 WARN  L193               SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-21 18:46:51,738 WARN  L193               SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 18:46:52,033 WARN  L193               SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 18:46:52,289 WARN  L193               SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 18:46:52,535 WARN  L193               SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-21 18:46:53,031 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 18:46:53,031 INFO  L93              Difference]: Finished difference Result 299 states and 390 transitions.
[2020-08-21 18:46:53,033 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-08-21 18:46:53,033 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 65
[2020-08-21 18:46:53,034 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 18:46:53,037 INFO  L225             Difference]: With dead ends: 299
[2020-08-21 18:46:53,038 INFO  L226             Difference]: Without dead ends: 222
[2020-08-21 18:46:53,039 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182
[2020-08-21 18:46:53,040 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 222 states.
[2020-08-21 18:46:53,080 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 176.
[2020-08-21 18:46:53,080 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 176 states.
[2020-08-21 18:46:53,082 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 207 transitions.
[2020-08-21 18:46:53,082 INFO  L78                 Accepts]: Start accepts. Automaton has 176 states and 207 transitions. Word has length 65
[2020-08-21 18:46:53,083 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 18:46:53,083 INFO  L479      AbstractCegarLoop]: Abstraction has 176 states and 207 transitions.
[2020-08-21 18:46:53,083 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-08-21 18:46:53,083 INFO  L276                IsEmpty]: Start isEmpty. Operand 176 states and 207 transitions.
[2020-08-21 18:46:53,085 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 70
[2020-08-21 18:46:53,085 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 18:46:53,085 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-21 18:46:53,086 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-08-21 18:46:53,086 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 18:46:53,086 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 18:46:53,086 INFO  L82        PathProgramCache]: Analyzing trace with hash -1251292780, now seen corresponding path program 1 times
[2020-08-21 18:46:53,086 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 18:46:53,087 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905687873]
[2020-08-21 18:46:53,087 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 18:46:53,113 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:53,364 WARN  L193               SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-21 18:46:53,365 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 18:46:53,383 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:53,408 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 18:46:53,409 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:53,411 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 18:46:53,411 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:53,413 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 18:46:53,414 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:53,418 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 18:46:53,419 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:53,432 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34
[2020-08-21 18:46:53,433 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:53,443 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39
[2020-08-21 18:46:53,444 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:53,445 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:46:53,445 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:53,446 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49
[2020-08-21 18:46:53,448 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:53,449 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55
[2020-08-21 18:46:53,450 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:53,452 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61
[2020-08-21 18:46:53,452 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:46:53,465 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 18:46:53,465 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905687873]
[2020-08-21 18:46:53,466 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 18:46:53,466 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-08-21 18:46:53,466 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413507090]
[2020-08-21 18:46:53,469 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-08-21 18:46:53,471 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 18:46:53,471 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-08-21 18:46:53,471 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-08-21 18:46:53,471 INFO  L87              Difference]: Start difference. First operand 176 states and 207 transitions. Second operand 6 states.
[2020-08-21 18:46:53,775 WARN  L193               SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-21 18:46:54,268 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 18:46:54,268 INFO  L93              Difference]: Finished difference Result 289 states and 355 transitions.
[2020-08-21 18:46:54,268 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-08-21 18:46:54,269 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 69
[2020-08-21 18:46:54,269 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 18:46:54,271 INFO  L225             Difference]: With dead ends: 289
[2020-08-21 18:46:54,274 INFO  L226             Difference]: Without dead ends: 137
[2020-08-21 18:46:54,279 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72
[2020-08-21 18:46:54,280 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 137 states.
[2020-08-21 18:46:54,337 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 125.
[2020-08-21 18:46:54,338 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 125 states.
[2020-08-21 18:46:54,340 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 140 transitions.
[2020-08-21 18:46:54,341 INFO  L78                 Accepts]: Start accepts. Automaton has 125 states and 140 transitions. Word has length 69
[2020-08-21 18:46:54,341 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 18:46:54,341 INFO  L479      AbstractCegarLoop]: Abstraction has 125 states and 140 transitions.
[2020-08-21 18:46:54,341 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-08-21 18:46:54,341 INFO  L276                IsEmpty]: Start isEmpty. Operand 125 states and 140 transitions.
[2020-08-21 18:46:54,342 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 70
[2020-08-21 18:46:54,343 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 18:46:54,343 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-21 18:46:54,343 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-08-21 18:46:54,343 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 18:46:54,344 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 18:46:54,344 INFO  L82        PathProgramCache]: Analyzing trace with hash 558485620, now seen corresponding path program 1 times
[2020-08-21 18:46:54,344 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 18:46:54,344 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910378632]
[2020-08-21 18:46:54,344 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 18:46:54,401 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-08-21 18:46:54,404 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-08-21 18:46:54,405 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-08-21 18:46:54,409 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-08-21 18:46:54,431 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 06:46:54 BoogieIcfgContainer
[2020-08-21 18:46:54,432 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-08-21 18:46:54,434 INFO  L168              Benchmark]: Toolchain (without parser) took 12987.83 ms. Allocated memory was 140.0 MB in the beginning and 416.8 MB in the end (delta: 276.8 MB). Free memory was 102.7 MB in the beginning and 131.4 MB in the end (delta: -28.8 MB). Peak memory consumption was 248.0 MB. Max. memory is 7.1 GB.
[2020-08-21 18:46:54,435 INFO  L168              Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-08-21 18:46:54,436 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 731.35 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 102.4 MB in the beginning and 167.2 MB in the end (delta: -64.7 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB.
[2020-08-21 18:46:54,436 INFO  L168              Benchmark]: Boogie Preprocessor took 86.07 ms. Allocated memory is still 201.9 MB. Free memory was 167.2 MB in the beginning and 163.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB.
[2020-08-21 18:46:54,437 INFO  L168              Benchmark]: RCFGBuilder took 1213.55 ms. Allocated memory was 201.9 MB in the beginning and 235.9 MB in the end (delta: 34.1 MB). Free memory was 163.0 MB in the beginning and 193.9 MB in the end (delta: -30.9 MB). Peak memory consumption was 79.5 MB. Max. memory is 7.1 GB.
[2020-08-21 18:46:54,438 INFO  L168              Benchmark]: TraceAbstraction took 10951.71 ms. Allocated memory was 235.9 MB in the beginning and 416.8 MB in the end (delta: 180.9 MB). Free memory was 193.9 MB in the beginning and 131.4 MB in the end (delta: 62.5 MB). Peak memory consumption was 243.4 MB. Max. memory is 7.1 GB.
[2020-08-21 18:46:54,441 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 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 731.35 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 102.4 MB in the beginning and 167.2 MB in the end (delta: -64.7 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 86.07 ms. Allocated memory is still 201.9 MB. Free memory was 167.2 MB in the beginning and 163.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 1213.55 ms. Allocated memory was 201.9 MB in the beginning and 235.9 MB in the end (delta: 34.1 MB). Free memory was 163.0 MB in the beginning and 193.9 MB in the end (delta: -30.9 MB). Peak memory consumption was 79.5 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 10951.71 ms. Allocated memory was 235.9 MB in the beginning and 416.8 MB in the end (delta: 180.9 MB). Free memory was 193.9 MB in the beginning and 131.4 MB in the end (delta: 62.5 MB). Peak memory consumption was 243.4 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 506]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L209]              static struct __ACC__ERR *head  =    (struct __ACC__ERR *)0;
[L413]              int waterLevel  =    1;
[L414]              int methaneLevelCritical  =    0;
[L582]              int pumpRunning  =    0;
[L583]              int systemActive  =    1;
[L735]              int cleanupTimeShifts  =    4;
[L811]              int retValue_acc ;
[L812]              int tmp ;
[L816]  FCALL       select_helpers()
[L817]  FCALL       select_features()
[L818]  CALL, EXPR  valid_product()
[L860]              int retValue_acc ;
[L863]              retValue_acc = 1
[L864]              return (retValue_acc);
[L818]  RET, EXPR   valid_product()
[L818]              tmp = valid_product()
[L820]  COND TRUE   \read(tmp)
[L822]  FCALL       setup()
[L823]  CALL        runTest()
[L802]  CALL        test()
[L514]              int splverifierCounter ;
[L515]              int tmp ;
[L516]              int tmp___0 ;
[L517]              int tmp___1 ;
[L518]              int tmp___2 ;
[L521]              splverifierCounter = 0
[L523]  COND TRUE   1
[L525]  COND TRUE   splverifierCounter < 4
[L531]              tmp = __VERIFIER_nondet_int()
[L533]  COND TRUE   \read(tmp)
[L535]  CALL        waterRise()
[L431]  COND TRUE   waterLevel < 2
[L432]              waterLevel = waterLevel + 1
[L535]  RET         waterRise()
[L541]              tmp___0 = __VERIFIER_nondet_int()
[L543]  COND FALSE  !(\read(tmp___0))
[L551]              tmp___2 = __VERIFIER_nondet_int()
[L553]  COND TRUE   \read(tmp___2)
[L566]  CALL        timeShift()
[L590]  COND FALSE  !(\read(pumpRunning))
[L597]  COND TRUE   \read(systemActive)
[L599]  CALL        processEnvironment()
[L619]              int tmp ;
[L622]  COND FALSE  !(\read(pumpRunning))
[L637]  FCALL       processEnvironment__wrappee__base()
[L599]  RET         processEnvironment()
[L605]  CALL        __utac_acc__Specification3_spec__1()
[L870]              int tmp ;
[L871]              int tmp___0 ;
[L872]              int tmp___1 ;
[L876]  CALL, EXPR  isMethaneLevelCritical()
[L452]              int retValue_acc ;
[L455]              retValue_acc = methaneLevelCritical
[L456]              return (retValue_acc);
[L876]  RET, EXPR   isMethaneLevelCritical()
[L876]              tmp = isMethaneLevelCritical()
[L878]  COND FALSE  !(\read(tmp))
[L882]  CALL, EXPR  getWaterLevel()
[L484]              int retValue_acc ;
[L487]              retValue_acc = waterLevel
[L488]              return (retValue_acc);
[L882]  RET, EXPR   getWaterLevel()
[L882]              tmp___0 = getWaterLevel()
[L884]  COND TRUE   tmp___0 == 2
[L886]  CALL, EXPR  isPumpRunning()
[L671]              int retValue_acc ;
[L674]              retValue_acc = pumpRunning
[L675]              return (retValue_acc);
[L886]  RET, EXPR   isPumpRunning()
[L886]              tmp___1 = isPumpRunning()
[L888]  COND FALSE  !(\read(tmp___1))
[L892]  CALL        __automaton_fail()
[L506]              __VERIFIER_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 37 procedures, 217 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 8.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 445 SDtfs, 684 SDslu, 248 SDs, 0 SdLazy, 1325 SolverSat, 410 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=176occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 134 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 365 NumberOfCodeBlocks, 365 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 291 ConstructedInterpolants, 0 QuantifiedInterpolants, 82382 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...