/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 true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --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_product25.cil.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 23:35:31,536 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 23:35:31,540 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 23:35:31,567 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 23:35:31,568 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 23:35:31,569 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 23:35:31,570 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 23:35:31,572 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 23:35:31,574 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 23:35:31,574 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 23:35:31,576 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 23:35:31,577 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 23:35:31,577 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 23:35:31,578 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 23:35:31,579 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 23:35:31,580 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 23:35:31,581 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 23:35:31,583 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 23:35:31,584 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 23:35:31,586 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 23:35:31,588 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 23:35:31,589 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 23:35:31,590 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 23:35:31,591 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 23:35:31,594 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 23:35:31,594 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 23:35:31,594 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 23:35:31,595 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 23:35:31,596 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 23:35:31,597 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 23:35:31,597 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 23:35:31,598 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 23:35:31,599 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 23:35:31,600 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 23:35:31,601 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 23:35:31,601 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 23:35:31,602 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 23:35:31,602 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 23:35:31,602 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 23:35:31,604 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 23:35:31,604 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 23:35:31,605 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 23:35:31,645 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 23:35:31,645 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 23:35:31,646 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 23:35:31,647 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 23:35:31,647 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 23:35:31,647 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 23:35:31,647 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 23:35:31,647 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 23:35:31,648 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 23:35:31,650 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 23:35:31,650 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 23:35:31,650 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 23:35:31,650 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 23:35:31,651 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 23:35:31,651 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 23:35:31,651 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 23:35:31,651 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 23:35:31,652 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 23:35:31,652 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 23:35:31,652 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 23:35:31,652 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 23:35:31,652 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 23:35:31,653 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 23:35:31,653 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 23:35:31,653 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 23:35:31,653 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 23:35:31,653 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 23:35:31,654 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 23:35:31,655 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 23:35:31,656 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 -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;
[2020-09-24 23:35:32,120 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 23:35:32,146 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 23:35:32,150 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 23:35:32,153 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 23:35:32,154 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 23:35:32,156 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product25.cil.c
[2020-09-24 23:35:32,250 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28ea351ce/d26767d3c24e458a9bfd5bf9fe8f5872/FLAG4dd00fa78
[2020-09-24 23:35:32,938 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 23:35:32,939 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product25.cil.c
[2020-09-24 23:35:32,957 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28ea351ce/d26767d3c24e458a9bfd5bf9fe8f5872/FLAG4dd00fa78
[2020-09-24 23:35:33,140 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28ea351ce/d26767d3c24e458a9bfd5bf9fe8f5872
[2020-09-24 23:35:33,156 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 23:35:33,163 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 23:35:33,167 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 23:35:33,167 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 23:35:33,171 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 23:35:33,173 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:35:33" (1/1) ...
[2020-09-24 23:35:33,178 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:33, skipping insertion in model container
[2020-09-24 23:35:33,178 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:35:33" (1/1) ...
[2020-09-24 23:35:33,188 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 23:35:33,242 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 23:35:33,598 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 23:35:33,620 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 23:35:33,867 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 23:35:33,917 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 23:35:33,919 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:33 WrapperNode
[2020-09-24 23:35:33,919 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 23:35:33,920 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 23:35:33,920 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 23:35:33,920 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 23:35:33,935 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:33" (1/1) ...
[2020-09-24 23:35:33,936 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:33" (1/1) ...
[2020-09-24 23:35:33,957 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:33" (1/1) ...
[2020-09-24 23:35:33,958 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:33" (1/1) ...
[2020-09-24 23:35:33,991 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:33" (1/1) ...
[2020-09-24 23:35:34,004 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:33" (1/1) ...
[2020-09-24 23:35:34,016 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:33" (1/1) ...
[2020-09-24 23:35:34,031 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 23:35:34,032 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 23:35:34,032 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 23:35:34,032 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 23:35:34,037 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:33" (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 23:35:34,141 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 23:35:34,141 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 23:35:34,141 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-09-24 23:35:34,142 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1
[2020-09-24 23:35:34,146 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-09-24 23:35:34,146 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-09-24 23:35:34,146 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-09-24 23:35:34,146 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-09-24 23:35:34,147 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-09-24 23:35:34,147 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-09-24 23:35:34,147 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-09-24 23:35:34,147 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-09-24 23:35:34,147 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-09-24 23:35:34,148 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-09-24 23:35:34,148 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-09-24 23:35:34,148 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-09-24 23:35:34,148 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-09-24 23:35:34,148 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry
[2020-09-24 23:35:34,148 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-09-24 23:35:34,149 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-09-24 23:35:34,149 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-09-24 23:35:34,149 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-09-24 23:35:34,149 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-09-24 23:35:34,149 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-09-24 23:35:34,149 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-09-24 23:35:34,150 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-09-24 23:35:34,150 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 23:35:34,150 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-09-24 23:35:34,150 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base
[2020-09-24 23:35:34,150 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-09-24 23:35:34,151 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor
[2020-09-24 23:35:34,151 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-09-24 23:35:34,151 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-09-24 23:35:34,151 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-09-24 23:35:34,151 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-09-24 23:35:34,151 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-09-24 23:35:34,152 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterLevel
[2020-09-24 23:35:34,152 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-09-24 23:35:34,152 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 23:35:34,152 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 23:35:34,152 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-09-24 23:35:34,152 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-09-24 23:35:34,153 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-09-24 23:35:34,153 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-09-24 23:35:34,153 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-09-24 23:35:34,153 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1
[2020-09-24 23:35:34,153 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-09-24 23:35:34,153 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-09-24 23:35:34,153 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-09-24 23:35:34,153 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-09-24 23:35:34,154 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-09-24 23:35:34,154 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-09-24 23:35:34,154 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-09-24 23:35:34,154 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-09-24 23:35:34,154 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-09-24 23:35:34,154 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-24 23:35:34,154 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-09-24 23:35:34,155 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-09-24 23:35:34,155 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-09-24 23:35:34,155 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-09-24 23:35:34,155 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-09-24 23:35:34,155 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-24 23:35:34,155 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-09-24 23:35:34,155 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-09-24 23:35:34,155 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-09-24 23:35:34,155 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-09-24 23:35:34,156 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-09-24 23:35:34,156 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry
[2020-09-24 23:35:34,156 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-09-24 23:35:34,156 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-09-24 23:35:34,156 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-09-24 23:35:34,156 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-09-24 23:35:34,157 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-09-24 23:35:34,157 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-09-24 23:35:34,157 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-09-24 23:35:34,157 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-09-24 23:35:34,157 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-09-24 23:35:34,157 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-09-24 23:35:34,159 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-09-24 23:35:34,159 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 23:35:34,160 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-09-24 23:35:34,160 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-09-24 23:35:34,161 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-09-24 23:35:34,161 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base
[2020-09-24 23:35:34,161 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterLevel
[2020-09-24 23:35:34,161 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor
[2020-09-24 23:35:34,162 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-09-24 23:35:34,162 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 23:35:34,162 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-09-24 23:35:34,162 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 23:35:35,338 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 23:35:35,338 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-09-24 23:35:35,345 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:35:35 BoogieIcfgContainer
[2020-09-24 23:35:35,346 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 23:35:35,347 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 23:35:35,347 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 23:35:35,351 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 23:35:35,351 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:35:33" (1/3) ...
[2020-09-24 23:35:35,352 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6422d62e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:35:35, skipping insertion in model container
[2020-09-24 23:35:35,352 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:33" (2/3) ...
[2020-09-24 23:35:35,352 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6422d62e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:35:35, skipping insertion in model container
[2020-09-24 23:35:35,353 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:35:35" (3/3) ...
[2020-09-24 23:35:35,355 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec3_product25.cil.c
[2020-09-24 23:35:35,367 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 23:35:35,378 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 23:35:35,401 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 23:35:35,435 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 23:35:35,436 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 23:35:35,436 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 23:35:35,436 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 23:35:35,436 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 23:35:35,436 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 23:35:35,436 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 23:35:35,436 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 23:35:35,463 INFO  L276                IsEmpty]: Start isEmpty. Operand 302 states.
[2020-09-24 23:35:35,481 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 154
[2020-09-24 23:35:35,481 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 23:35:35,482 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 23:35:35,483 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 23:35:35,489 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 23:35:35,490 INFO  L82        PathProgramCache]: Analyzing trace with hash 984796511, now seen corresponding path program 1 times
[2020-09-24 23:35:35,500 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 23:35:35,501 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797206398]
[2020-09-24 23:35:35,501 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 23:35:35,872 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:35:36,022 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:35:36,210 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:35:36,804 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:35:40,333 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:35:40,334 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 186
[2020-09-24 23:35:40,334 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-24 23:35:40,334 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4452
[2020-09-24 23:35:40,338 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:35:40,338 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 16
[2020-09-24 23:35:40,338 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 78
[2020-09-24 23:35:40,338 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 92
[2020-09-24 23:35:40,339 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-09-24 23:35:40,883 WARN  L193               SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-09-24 23:35:40,886 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 23:35:40,977 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:35:41,043 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:35:41,346 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:35:41,347 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 85
[2020-09-24 23:35:41,347 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:35:41,347 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 365
[2020-09-24 23:35:41,347 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:35:41,348 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 23:35:41,348 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:35:41,348 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 74
[2020-09-24 23:35:41,349 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:35:41,419 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-09-24 23:35:41,420 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:35:41,421 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:35:41,425 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:35:41,425 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 23:35:41,425 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:35:41,425 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 23:35:41,426 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:35:41,426 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 23:35:41,426 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:35:41,426 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 23:35:41,426 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:35:41,428 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-09-24 23:35:41,429 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:35:41,430 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:35:41,434 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:35:41,434 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 23:35:41,434 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:35:41,434 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 23:35:41,435 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:35:41,435 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 23:35:41,435 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:35:41,435 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 23:35:41,435 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:35:41,437 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-09-24 23:35:41,438 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:35:41,440 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:35:41,449 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:35:41,449 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 23:35:41,449 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:35:41,449 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-09-24 23:35:41,450 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:35:41,450 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 23:35:41,450 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:35:41,450 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 23:35:41,451 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:35:41,453 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-09-24 23:35:41,454 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:35:41,455 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:35:41,459 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:35:41,459 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 23:35:41,459 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:35:41,459 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 23:35:41,460 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:35:41,460 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 23:35:41,460 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:35:41,460 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 23:35:41,461 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:35:41,462 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2020-09-24 23:35:41,464 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:35:41,466 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:35:41,469 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:35:41,470 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 23:35:41,470 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:35:41,470 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-24 23:35:41,471 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:35:41,471 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 23:35:41,471 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:35:41,471 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 23:35:41,472 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:35:41,474 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131
[2020-09-24 23:35:41,476 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:35:41,478 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:35:41,488 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:35:41,488 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 23:35:41,488 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:35:41,488 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-09-24 23:35:41,489 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:35:41,489 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 23:35:41,489 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:35:41,489 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 23:35:41,490 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:35:41,519 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141
[2020-09-24 23:35:41,520 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:35:41,522 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:35:41,524 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:35:41,525 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 23:35:41,525 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:35:41,525 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 23:35:41,525 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:35:41,526 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 23:35:41,526 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 23:35:41,526 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 23:35:41,526 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:35:41,566 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 23:35:41,567 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797206398]
[2020-09-24 23:35:41,569 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 23:35:41,570 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-09-24 23:35:41,571 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138495847]
[2020-09-24 23:35:41,578 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-09-24 23:35:41,578 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 23:35:41,598 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-09-24 23:35:41,599 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2020-09-24 23:35:41,602 INFO  L87              Difference]: Start difference. First operand 302 states. Second operand 8 states.
[2020-09-24 23:35:42,241 WARN  L193               SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 23:35:43,660 WARN  L193               SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 23:35:43,986 WARN  L193               SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-09-24 23:35:44,423 WARN  L193               SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 23:35:44,802 WARN  L193               SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-09-24 23:35:45,146 WARN  L193               SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 23:35:45,756 WARN  L193               SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 23:35:46,075 WARN  L193               SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 23:35:47,174 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 23:35:47,175 INFO  L93              Difference]: Finished difference Result 573 states and 709 transitions.
[2020-09-24 23:35:47,176 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-09-24 23:35:47,177 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 153
[2020-09-24 23:35:47,179 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 23:35:47,198 INFO  L225             Difference]: With dead ends: 573
[2020-09-24 23:35:47,198 INFO  L226             Difference]: Without dead ends: 381
[2020-09-24 23:35:47,205 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240
[2020-09-24 23:35:47,223 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 381 states.
[2020-09-24 23:35:47,351 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 338.
[2020-09-24 23:35:47,352 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 338 states.
[2020-09-24 23:35:47,355 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 372 transitions.
[2020-09-24 23:35:47,358 INFO  L78                 Accepts]: Start accepts. Automaton has 338 states and 372 transitions. Word has length 153
[2020-09-24 23:35:47,358 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 23:35:47,359 INFO  L479      AbstractCegarLoop]: Abstraction has 338 states and 372 transitions.
[2020-09-24 23:35:47,359 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-09-24 23:35:47,359 INFO  L276                IsEmpty]: Start isEmpty. Operand 338 states and 372 transitions.
[2020-09-24 23:35:47,365 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 169
[2020-09-24 23:35:47,365 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 23:35:47,365 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]
[2020-09-24 23:35:47,365 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 23:35:47,366 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 23:35:47,366 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 23:35:47,366 INFO  L82        PathProgramCache]: Analyzing trace with hash 1694501889, now seen corresponding path program 1 times
[2020-09-24 23:35:47,366 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 23:35:47,367 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778428303]
[2020-09-24 23:35:47,367 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 23:35:47,426 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:35:47,484 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:35:47,788 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:35:47,788 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 201
[2020-09-24 23:35:47,789 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:35:47,789 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 359
[2020-09-24 23:35:47,789 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:35:47,789 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 23:35:47,789 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 82
[2020-09-24 23:35:47,790 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 73
[2020-09-24 23:35:47,790 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:35:48,082 WARN  L193               SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-09-24 23:35:48,083 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 23:35:48,118 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:35:48,156 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:35:48,371 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:35:48,372 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 85
[2020-09-24 23:35:48,372 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:35:48,372 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 252
[2020-09-24 23:35:48,372 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:35:48,373 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 23:35:48,373 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:35:48,373 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 78
[2020-09-24 23:35:48,373 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:35:48,417 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-09-24 23:35:48,418 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:35:48,420 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:35:48,423 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:35:48,424 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 23:35:48,424 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:35:48,424 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 23:35:48,424 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:35:48,424 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 23:35:48,425 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:35:48,425 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 23:35:48,425 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:35:48,427 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-09-24 23:35:48,428 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:35:48,429 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:35:48,434 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:35:48,434 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 23:35:48,434 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:35:48,434 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-24 23:35:48,434 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:35:48,435 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 23:35:48,435 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:35:48,435 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 23:35:48,435 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:35:48,437 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-09-24 23:35:48,438 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:35:48,440 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:35:48,449 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:35:48,449 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 23:35:48,449 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:35:48,449 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-09-24 23:35:48,450 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:35:48,450 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 23:35:48,450 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:35:48,450 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 23:35:48,450 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:35:48,453 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-09-24 23:35:48,454 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:35:48,455 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:35:48,459 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:35:48,459 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 23:35:48,459 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:35:48,460 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 23:35:48,460 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:35:48,460 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 23:35:48,460 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:35:48,460 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 23:35:48,460 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:35:48,471 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116
[2020-09-24 23:35:48,473 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:35:48,475 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:35:48,481 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:35:48,482 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-24 23:35:48,482 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:35:48,482 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-09-24 23:35:48,482 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:35:48,483 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 23:35:48,483 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:35:48,483 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-24 23:35:48,484 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:35:48,486 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136
[2020-09-24 23:35:48,487 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:35:48,489 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:35:48,491 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:35:48,491 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 23:35:48,491 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:35:48,491 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 23:35:48,491 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:35:48,492 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 23:35:48,492 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 23:35:48,492 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 23:35:48,492 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:35:48,494 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146
[2020-09-24 23:35:48,495 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:35:48,496 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:35:48,498 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:35:48,498 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 23:35:48,499 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:35:48,499 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 23:35:48,499 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:35:48,499 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 23:35:48,499 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 23:35:48,500 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 23:35:48,500 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:35:48,501 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156
[2020-09-24 23:35:48,502 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:35:48,503 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:35:48,505 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:35:48,505 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 23:35:48,505 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:35:48,505 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 23:35:48,506 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:35:48,506 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 23:35:48,506 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 23:35:48,506 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 23:35:48,506 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:35:48,541 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 23:35:48,542 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778428303]
[2020-09-24 23:35:48,542 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 23:35:48,542 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-24 23:35:48,543 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000407233]
[2020-09-24 23:35:48,545 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 23:35:48,545 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 23:35:48,545 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 23:35:48,546 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-09-24 23:35:48,546 INFO  L87              Difference]: Start difference. First operand 338 states and 372 transitions. Second operand 5 states.
[2020-09-24 23:35:49,053 WARN  L193               SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 23:35:50,139 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 23:35:50,140 INFO  L93              Difference]: Finished difference Result 640 states and 756 transitions.
[2020-09-24 23:35:50,140 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-09-24 23:35:50,140 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 168
[2020-09-24 23:35:50,142 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 23:35:50,147 INFO  L225             Difference]: With dead ends: 640
[2020-09-24 23:35:50,147 INFO  L226             Difference]: Without dead ends: 412
[2020-09-24 23:35:50,151 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2020-09-24 23:35:50,152 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 412 states.
[2020-09-24 23:35:50,223 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 343.
[2020-09-24 23:35:50,224 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 343 states.
[2020-09-24 23:35:50,226 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 377 transitions.
[2020-09-24 23:35:50,227 INFO  L78                 Accepts]: Start accepts. Automaton has 343 states and 377 transitions. Word has length 168
[2020-09-24 23:35:50,227 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 23:35:50,228 INFO  L479      AbstractCegarLoop]: Abstraction has 343 states and 377 transitions.
[2020-09-24 23:35:50,228 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 23:35:50,228 INFO  L276                IsEmpty]: Start isEmpty. Operand 343 states and 377 transitions.
[2020-09-24 23:35:50,231 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 177
[2020-09-24 23:35:50,232 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 23:35:50,232 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]
[2020-09-24 23:35:50,232 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 23:35:50,232 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 23:35:50,232 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 23:35:50,233 INFO  L82        PathProgramCache]: Analyzing trace with hash -1373722854, now seen corresponding path program 1 times
[2020-09-24 23:35:50,233 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 23:35:50,233 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020275178]
[2020-09-24 23:35:50,234 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 23:35:50,301 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-24 23:35:50,309 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-24 23:35:50,309 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-09-24 23:35:50,315 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-24 23:35:50,342 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 11:35:50 BoogieIcfgContainer
[2020-09-24 23:35:50,343 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-24 23:35:50,345 INFO  L168              Benchmark]: Toolchain (without parser) took 17186.79 ms. Allocated memory was 140.0 MB in the beginning and 437.8 MB in the end (delta: 297.8 MB). Free memory was 102.1 MB in the beginning and 103.6 MB in the end (delta: -1.5 MB). Peak memory consumption was 296.3 MB. Max. memory is 7.1 GB.
[2020-09-24 23:35:50,346 INFO  L168              Benchmark]: CDTParser took 0.25 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: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-24 23:35:50,347 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 752.85 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.4 MB in the beginning and 173.8 MB in the end (delta: -72.4 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB.
[2020-09-24 23:35:50,348 INFO  L168              Benchmark]: Boogie Preprocessor took 111.44 ms. Allocated memory is still 203.9 MB. Free memory was 173.8 MB in the beginning and 169.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB.
[2020-09-24 23:35:50,349 INFO  L168              Benchmark]: RCFGBuilder took 1313.97 ms. Allocated memory was 203.9 MB in the beginning and 237.5 MB in the end (delta: 33.6 MB). Free memory was 169.6 MB in the beginning and 180.4 MB in the end (delta: -10.8 MB). Peak memory consumption was 85.2 MB. Max. memory is 7.1 GB.
[2020-09-24 23:35:50,350 INFO  L168              Benchmark]: TraceAbstraction took 14995.94 ms. Allocated memory was 237.5 MB in the beginning and 437.8 MB in the end (delta: 200.3 MB). Free memory was 180.4 MB in the beginning and 103.6 MB in the end (delta: 76.8 MB). Peak memory consumption was 277.1 MB. Max. memory is 7.1 GB.
[2020-09-24 23:35:50,354 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.25 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: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 752.85 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.4 MB in the beginning and 173.8 MB in the end (delta: -72.4 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 111.44 ms. Allocated memory is still 203.9 MB. Free memory was 173.8 MB in the beginning and 169.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 1313.97 ms. Allocated memory was 203.9 MB in the beginning and 237.5 MB in the end (delta: 33.6 MB). Free memory was 169.6 MB in the beginning and 180.4 MB in the end (delta: -10.8 MB). Peak memory consumption was 85.2 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 14995.94 ms. Allocated memory was 237.5 MB in the beginning and 437.8 MB in the end (delta: 200.3 MB). Free memory was 180.4 MB in the beginning and 103.6 MB in the end (delta: 76.8 MB). Peak memory consumption was 277.1 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 82]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L256]              static struct __ACC__ERR *head  =    (struct __ACC__ERR *)0;
[L458]              int waterLevel  =    1;
[L459]              int methaneLevelCritical  =    0;
[L585]              int cleanupTimeShifts  =    4;
[L686]              int pumpRunning  =    0;
[L687]              int systemActive  =    1;
[L661]              int retValue_acc ;
[L662]              int tmp ;
[L666]  FCALL       select_helpers()
[L667]  FCALL       select_features()
[L668]  CALL, EXPR  valid_product()
[L576]              int retValue_acc ;
[L579]              retValue_acc = 1
[L580]              return (retValue_acc);
[L668]  RET, EXPR   valid_product()
[L668]              tmp = valid_product()
[L670]  COND TRUE   \read(tmp)
[L672]  FCALL       setup()
[L673]  CALL        runTest()
[L655]  CALL        test()
[L857]              int splverifierCounter ;
[L858]              int tmp ;
[L859]              int tmp___0 ;
[L860]              int tmp___1 ;
[L861]              int tmp___2 ;
[L864]              splverifierCounter = 0
[L866]  COND TRUE   1
[L868]  COND TRUE   splverifierCounter < 4
[L874]              tmp = __VERIFIER_nondet_int()
[L876]  COND TRUE   \read(tmp)
[L878]  CALL        waterRise()
[L476]  COND TRUE   waterLevel < 2
[L477]              waterLevel = waterLevel + 1
[L878]  RET         waterRise()
[L884]              tmp___0 = __VERIFIER_nondet_int()
[L886]  COND FALSE  !(\read(tmp___0))
[L894]              tmp___2 = __VERIFIER_nondet_int()
[L896]  COND TRUE   \read(tmp___2)
[L909]  CALL        timeShift()
[L693]  COND FALSE  !(\read(pumpRunning))
[L700]  COND TRUE   \read(systemActive)
[L702]  CALL        processEnvironment()
[L722]              int tmp ;
[L725]  COND FALSE  !(\read(pumpRunning))
[L740]  FCALL       processEnvironment__wrappee__base()
[L702]  RET         processEnvironment()
[L708]  CALL        __utac_acc__Specification3_spec__1()
[L45]               int tmp ;
[L46]               int tmp___0 ;
[L47]               int tmp___1 ;
[L51]   CALL, EXPR  isMethaneLevelCritical()
[L497]              int retValue_acc ;
[L500]              retValue_acc = methaneLevelCritical
[L501]              return (retValue_acc);
[L51]   RET, EXPR   isMethaneLevelCritical()
[L51]               tmp = isMethaneLevelCritical()
[L53]   COND FALSE  !(\read(tmp))
[L57]   CALL, EXPR  getWaterLevel()
[L529]              int retValue_acc ;
[L532]              retValue_acc = waterLevel
[L533]              return (retValue_acc);
[L57]   RET, EXPR   getWaterLevel()
[L57]               tmp___0 = getWaterLevel()
[L59]   COND TRUE   tmp___0 == 2
[L61]   CALL, EXPR  isPumpRunning()
[L792]              int retValue_acc ;
[L795]              retValue_acc = pumpRunning
[L796]              return (retValue_acc);
[L61]   RET, EXPR   isPumpRunning()
[L61]               tmp___1 = isPumpRunning()
[L63]   COND FALSE  !(\read(tmp___1))
[L67]   CALL        __automaton_fail()
[L82]               __VERIFIER_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 38 procedures, 618 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 457 SDtfs, 726 SDslu, 666 SDs, 0 SdLazy, 1387 SolverSat, 221 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=343occurred in iteration=2, 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, 2 MinimizatonAttempts, 112 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.7s InterpolantComputationTime, 497 NumberOfCodeBlocks, 497 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 319 ConstructedInterpolants, 0 QuantifiedInterpolants, 137626 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...