/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product02.cil.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 16:45:24,664 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 16:45:24,668 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 16:45:24,694 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 16:45:24,694 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 16:45:24,696 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 16:45:24,697 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 16:45:24,699 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 16:45:24,701 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 16:45:24,701 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 16:45:24,702 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 16:45:24,704 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 16:45:24,704 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 16:45:24,705 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 16:45:24,706 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 16:45:24,710 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 16:45:24,711 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 16:45:24,712 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 16:45:24,714 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 16:45:24,719 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 16:45:24,722 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 16:45:24,724 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 16:45:24,726 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 16:45:24,727 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 16:45:24,732 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 16:45:24,732 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 16:45:24,733 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 16:45:24,735 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 16:45:24,736 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 16:45:24,738 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 16:45:24,738 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 16:45:24,739 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 16:45:24,740 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 16:45:24,740 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 16:45:24,742 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 16:45:24,743 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 16:45:24,743 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 16:45:24,744 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 16:45:24,744 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 16:45:24,745 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 16:45:24,747 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 16:45:24,748 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 16:45:24,808 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 16:45:24,808 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 16:45:24,811 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 16:45:24,811 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 16:45:24,811 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 16:45:24,811 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 16:45:24,812 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 16:45:24,812 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 16:45:24,812 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 16:45:24,812 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 16:45:24,812 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 16:45:24,814 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 16:45:24,814 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 16:45:24,814 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 16:45:24,814 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 16:45:24,814 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 16:45:24,815 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 16:45:24,815 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 16:45:24,815 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 16:45:24,816 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 16:45:24,816 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 16:45:24,816 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 16:45:24,816 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 16:45:24,816 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 16:45:24,817 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 16:45:24,817 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 16:45:24,817 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 16:45:24,817 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 16:45:24,818 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 16:45:24,818 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;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;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;log-additional-information=true;
[2020-09-24 16:45:25,307 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 16:45:25,334 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 16:45:25,339 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 16:45:25,341 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 16:45:25,342 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 16:45:25,344 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product02.cil.c
[2020-09-24 16:45:25,439 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f02c58cc5/04e9631a68cf47ad8b8696e2e2677c79/FLAG9f37337db
[2020-09-24 16:45:26,073 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 16:45:26,074 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product02.cil.c
[2020-09-24 16:45:26,094 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f02c58cc5/04e9631a68cf47ad8b8696e2e2677c79/FLAG9f37337db
[2020-09-24 16:45:26,312 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f02c58cc5/04e9631a68cf47ad8b8696e2e2677c79
[2020-09-24 16:45:26,326 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 16:45:26,333 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 16:45:26,337 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 16:45:26,337 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 16:45:26,342 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 16:45:26,343 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:45:26" (1/1) ...
[2020-09-24 16:45:26,348 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c96dc2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:45:26, skipping insertion in model container
[2020-09-24 16:45:26,348 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:45:26" (1/1) ...
[2020-09-24 16:45:26,358 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 16:45:26,405 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 16:45:26,897 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 16:45:26,923 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 16:45:27,005 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 16:45:27,040 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 16:45:27,041 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:45:27 WrapperNode
[2020-09-24 16:45:27,041 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 16:45:27,042 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 16:45:27,042 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 16:45:27,042 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 16:45:27,057 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:45:27" (1/1) ...
[2020-09-24 16:45:27,057 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:45:27" (1/1) ...
[2020-09-24 16:45:27,078 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:45:27" (1/1) ...
[2020-09-24 16:45:27,078 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:45:27" (1/1) ...
[2020-09-24 16:45:27,112 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:45:27" (1/1) ...
[2020-09-24 16:45:27,124 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:45:27" (1/1) ...
[2020-09-24 16:45:27,129 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:45:27" (1/1) ...
[2020-09-24 16:45:27,138 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 16:45:27,138 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 16:45:27,139 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 16:45:27,139 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 16:45:27,144 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:45:27" (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 16:45:27,248 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 16:45:27,249 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 16:45:27,249 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-09-24 16:45:27,250 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-09-24 16:45:27,250 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-09-24 16:45:27,250 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-09-24 16:45:27,250 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-09-24 16:45:27,251 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-09-24 16:45:27,251 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-09-24 16:45:27,252 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-09-24 16:45:27,252 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-09-24 16:45:27,252 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-09-24 16:45:27,253 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-09-24 16:45:27,253 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1
[2020-09-24 16:45:27,254 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2
[2020-09-24 16:45:27,255 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-09-24 16:45:27,255 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-09-24 16:45:27,255 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-09-24 16:45:27,255 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-09-24 16:45:27,256 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-09-24 16:45:27,256 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-09-24 16:45:27,257 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-09-24 16:45:27,258 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-09-24 16:45:27,258 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-09-24 16:45:27,259 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-09-24 16:45:27,260 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 16:45:27,260 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-09-24 16:45:27,261 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-09-24 16:45:27,261 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-09-24 16:45:27,261 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-09-24 16:45:27,261 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-09-24 16:45:27,261 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-09-24 16:45:27,261 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-09-24 16:45:27,262 INFO  L138     BoogieDeclarations]: Found implementation of procedure startSystem
[2020-09-24 16:45:27,262 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-09-24 16:45:27,262 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-09-24 16:45:27,262 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 16:45:27,262 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 16:45:27,262 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-09-24 16:45:27,263 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-09-24 16:45:27,263 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-09-24 16:45:27,263 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-09-24 16:45:27,263 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-09-24 16:45:27,263 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-09-24 16:45:27,263 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-09-24 16:45:27,264 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-09-24 16:45:27,264 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-09-24 16:45:27,264 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-09-24 16:45:27,264 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-09-24 16:45:27,264 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-24 16:45:27,264 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-09-24 16:45:27,265 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-09-24 16:45:27,265 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1
[2020-09-24 16:45:27,265 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2
[2020-09-24 16:45:27,265 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-09-24 16:45:27,266 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-09-24 16:45:27,266 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-09-24 16:45:27,266 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-09-24 16:45:27,266 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-09-24 16:45:27,267 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-09-24 16:45:27,267 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-09-24 16:45:27,267 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-09-24 16:45:27,267 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-09-24 16:45:27,267 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-24 16:45:27,267 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-09-24 16:45:27,268 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-09-24 16:45:27,268 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-09-24 16:45:27,268 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-09-24 16:45:27,268 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-09-24 16:45:27,268 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-09-24 16:45:27,268 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-09-24 16:45:27,269 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-09-24 16:45:27,270 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-09-24 16:45:27,270 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-09-24 16:45:27,271 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-09-24 16:45:27,271 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-09-24 16:45:27,272 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-09-24 16:45:27,272 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 16:45:27,272 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-09-24 16:45:27,272 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-09-24 16:45:27,272 INFO  L130     BoogieDeclarations]: Found specification of procedure startSystem
[2020-09-24 16:45:27,272 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-09-24 16:45:27,273 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-09-24 16:45:27,273 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 16:45:27,274 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-09-24 16:45:27,274 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 16:45:28,484 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 16:45:28,484 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-09-24 16:45:28,495 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:45:28 BoogieIcfgContainer
[2020-09-24 16:45:28,495 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 16:45:28,497 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 16:45:28,497 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 16:45:28,500 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 16:45:28,502 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:45:26" (1/3) ...
[2020-09-24 16:45:28,503 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d5fa39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:45:28, skipping insertion in model container
[2020-09-24 16:45:28,503 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:45:27" (2/3) ...
[2020-09-24 16:45:28,504 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d5fa39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:45:28, skipping insertion in model container
[2020-09-24 16:45:28,504 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:45:28" (3/3) ...
[2020-09-24 16:45:28,507 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec2_product02.cil.c
[2020-09-24 16:45:28,518 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 16:45:28,528 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 16:45:28,546 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 16:45:28,574 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 16:45:28,575 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 16:45:28,575 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 16:45:28,575 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 16:45:28,575 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 16:45:28,575 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 16:45:28,575 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 16:45:28,576 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 16:45:28,601 INFO  L276                IsEmpty]: Start isEmpty. Operand 260 states.
[2020-09-24 16:45:28,617 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 149
[2020-09-24 16:45:28,617 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:45:28,619 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]
[2020-09-24 16:45:28,619 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:45:28,625 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:45:28,626 INFO  L82        PathProgramCache]: Analyzing trace with hash -1973614371, now seen corresponding path program 1 times
[2020-09-24 16:45:28,635 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:45:28,635 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52468646]
[2020-09-24 16:45:28,636 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:45:29,015 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:45:29,168 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:45:29,443 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:45:31,083 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:45:31,308 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:45:33,332 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:45:34,037 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:46:15,754 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:46:15,755 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 181
[2020-09-24 16:46:15,755 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 6
[2020-09-24 16:46:15,755 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 46729
[2020-09-24 16:46:15,757 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:46:15,757 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:46:15,757 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 136
[2020-09-24 16:46:15,758 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:46:15,758 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-24 16:46:16,149 WARN  L193               SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-09-24 16:46:16,157 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 16:46:16,181 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:46:16,200 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:46:16,298 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:46:16,298 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 86
[2020-09-24 16:46:16,299 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:46:16,308 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 114
[2020-09-24 16:46:16,308 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:46:16,308 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:46:16,309 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:46:16,309 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:46:16,309 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:46:16,381 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84
[2020-09-24 16:46:16,382 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:46:16,383 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:46:16,385 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:46:16,385 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:46:16,385 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:46:16,385 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:46:16,386 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:46:16,386 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:46:16,386 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:46:16,386 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:46:16,387 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:46:16,389 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87
[2020-09-24 16:46:16,390 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:46:16,392 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:46:16,393 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:46:16,393 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:46:16,394 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:46:16,394 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:46:16,394 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:46:16,394 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:46:16,395 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:46:16,395 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:46:16,395 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:46:16,397 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90
[2020-09-24 16:46:16,399 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:46:16,401 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:46:16,404 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:46:16,404 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:46:16,405 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:46:16,405 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 16:46:16,405 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:46:16,405 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:46:16,405 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:46:16,406 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:46:16,406 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:46:16,407 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100
[2020-09-24 16:46:16,408 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:46:16,410 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:46:16,411 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:46:16,411 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:46:16,411 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:46:16,412 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:46:16,412 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:46:16,412 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:46:16,412 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:46:16,412 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:46:16,413 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:46:16,422 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104
[2020-09-24 16:46:16,423 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:46:16,425 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:46:16,426 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:46:16,427 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-09-24 16:46:16,427 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:46:16,427 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:46:16,427 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:46:16,427 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:46:16,428 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:46:16,428 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:46:16,428 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:46:16,430 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125
[2020-09-24 16:46:16,433 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:46:16,434 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:46:16,436 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:46:16,436 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:46:16,436 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:46:16,436 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:46:16,437 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:46:16,437 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:46:16,437 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 16:46:16,437 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:46:16,438 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:46:16,441 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135
[2020-09-24 16:46:16,442 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:46:16,444 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:46:16,445 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:46:16,446 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:46:16,446 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:46:16,446 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:46:16,446 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:46:16,447 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:46:16,447 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 16:46:16,447 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:46:16,447 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:46:16,488 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 16:46:16,489 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52468646]
[2020-09-24 16:46:16,491 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 16:46:16,491 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-24 16:46:16,492 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622808313]
[2020-09-24 16:46:16,506 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-24 16:46:16,507 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 16:46:16,525 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-24 16:46:16,526 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2020-09-24 16:46:16,528 INFO  L87              Difference]: Start difference. First operand 260 states. Second operand 4 states.
[2020-09-24 16:46:17,811 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 16:46:17,812 INFO  L93              Difference]: Finished difference Result 366 states and 437 transitions.
[2020-09-24 16:46:17,813 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-09-24 16:46:17,815 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 148
[2020-09-24 16:46:17,818 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 16:46:17,844 INFO  L225             Difference]: With dead ends: 366
[2020-09-24 16:46:17,844 INFO  L226             Difference]: Without dead ends: 248
[2020-09-24 16:46:17,851 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2020-09-24 16:46:17,875 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 248 states.
[2020-09-24 16:46:17,950 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 203.
[2020-09-24 16:46:17,951 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 203 states.
[2020-09-24 16:46:17,953 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 217 transitions.
[2020-09-24 16:46:17,956 INFO  L78                 Accepts]: Start accepts. Automaton has 203 states and 217 transitions. Word has length 148
[2020-09-24 16:46:17,956 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 16:46:17,957 INFO  L479      AbstractCegarLoop]: Abstraction has 203 states and 217 transitions.
[2020-09-24 16:46:17,957 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-24 16:46:17,957 INFO  L276                IsEmpty]: Start isEmpty. Operand 203 states and 217 transitions.
[2020-09-24 16:46:17,961 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 150
[2020-09-24 16:46:17,962 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:46:17,962 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]
[2020-09-24 16:46:17,962 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 16:46:17,962 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:46:17,963 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:46:17,963 INFO  L82        PathProgramCache]: Analyzing trace with hash -605657034, now seen corresponding path program 1 times
[2020-09-24 16:46:17,963 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:46:17,963 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592931243]
[2020-09-24 16:46:17,964 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:46:18,008 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:46:18,056 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:46:18,139 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:46:19,417 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:46:19,517 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:46:20,743 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:46:21,955 FATAL L256   erpolLogProxyWrapper]: Now shrinking...