/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_spec4_product43.cil.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 16:54:59,929 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 16:54:59,933 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 16:54:59,977 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 16:54:59,978 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 16:54:59,986 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 16:54:59,988 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 16:54:59,992 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 16:54:59,995 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 16:54:59,998 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 16:54:59,999 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 16:55:00,000 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 16:55:00,000 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 16:55:00,003 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 16:55:00,005 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 16:55:00,007 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 16:55:00,008 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 16:55:00,009 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 16:55:00,011 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 16:55:00,019 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 16:55:00,022 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 16:55:00,023 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 16:55:00,024 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 16:55:00,025 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 16:55:00,043 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 16:55:00,044 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 16:55:00,044 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 16:55:00,045 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 16:55:00,046 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 16:55:00,047 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 16:55:00,047 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 16:55:00,052 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 16:55:00,053 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 16:55:00,054 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 16:55:00,055 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 16:55:00,055 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 16:55:00,056 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 16:55:00,056 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 16:55:00,057 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 16:55:00,058 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 16:55:00,058 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 16:55:00,059 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 16:55:00,105 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 16:55:00,106 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 16:55:00,108 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 16:55:00,108 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 16:55:00,108 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 16:55:00,109 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 16:55:00,109 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 16:55:00,109 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 16:55:00,109 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 16:55:00,110 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 16:55:00,111 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 16:55:00,111 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 16:55:00,111 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 16:55:00,111 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 16:55:00,112 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 16:55:00,112 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 16:55:00,112 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 16:55:00,112 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 16:55:00,112 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 16:55:00,113 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 16:55:00,113 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 16:55:00,113 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 16:55:00,113 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 16:55:00,113 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 16:55:00,114 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 16:55:00,114 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 16:55:00,114 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 16:55:00,114 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 16:55:00,114 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 16:55:00,115 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 16:55:00,599 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 16:55:00,626 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 16:55:00,631 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 16:55:00,634 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 16:55:00,634 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 16:55:00,636 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product43.cil.c
[2020-09-24 16:55:00,727 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a8ee5a2c/f16b624d2249428abe02a0b900a3aa62/FLAG869a10bb3
[2020-09-24 16:55:01,372 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 16:55:01,373 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product43.cil.c
[2020-09-24 16:55:01,397 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a8ee5a2c/f16b624d2249428abe02a0b900a3aa62/FLAG869a10bb3
[2020-09-24 16:55:01,605 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a8ee5a2c/f16b624d2249428abe02a0b900a3aa62
[2020-09-24 16:55:01,619 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 16:55:01,625 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 16:55:01,627 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 16:55:01,627 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 16:55:01,633 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 16:55:01,635 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:55:01" (1/1) ...
[2020-09-24 16:55:01,640 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51800d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:01, skipping insertion in model container
[2020-09-24 16:55:01,640 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:55:01" (1/1) ...
[2020-09-24 16:55:01,652 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 16:55:01,720 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 16:55:02,194 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 16:55:02,213 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 16:55:02,295 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 16:55:02,333 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 16:55:02,334 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:02 WrapperNode
[2020-09-24 16:55:02,334 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 16:55:02,335 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 16:55:02,335 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 16:55:02,335 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 16:55:02,351 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:02" (1/1) ...
[2020-09-24 16:55:02,351 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:02" (1/1) ...
[2020-09-24 16:55:02,372 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:02" (1/1) ...
[2020-09-24 16:55:02,372 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:02" (1/1) ...
[2020-09-24 16:55:02,424 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:02" (1/1) ...
[2020-09-24 16:55:02,435 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:02" (1/1) ...
[2020-09-24 16:55:02,441 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:02" (1/1) ...
[2020-09-24 16:55:02,449 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 16:55:02,449 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 16:55:02,450 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 16:55:02,450 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 16:55:02,451 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:02" (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 16:55:02,542 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 16:55:02,543 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 16:55:02,544 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-09-24 16:55:02,544 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-09-24 16:55:02,545 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-09-24 16:55:02,545 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base
[2020-09-24 16:55:02,545 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-09-24 16:55:02,545 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor
[2020-09-24 16:55:02,545 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-09-24 16:55:02,546 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-09-24 16:55:02,547 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-09-24 16:55:02,547 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-09-24 16:55:02,547 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-09-24 16:55:02,547 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterLevel
[2020-09-24 16:55:02,547 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopSystem
[2020-09-24 16:55:02,548 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-09-24 16:55:02,549 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-09-24 16:55:02,549 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-09-24 16:55:02,549 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-09-24 16:55:02,549 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-09-24 16:55:02,549 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 16:55:02,549 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-09-24 16:55:02,550 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-09-24 16:55:02,550 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-09-24 16:55:02,550 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-09-24 16:55:02,551 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-09-24 16:55:02,551 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-09-24 16:55:02,551 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry
[2020-09-24 16:55:02,551 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-09-24 16:55:02,552 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-09-24 16:55:02,552 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-09-24 16:55:02,552 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-09-24 16:55:02,552 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-09-24 16:55:02,552 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-09-24 16:55:02,552 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-09-24 16:55:02,553 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-09-24 16:55:02,553 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-09-24 16:55:02,553 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-09-24 16:55:02,553 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1
[2020-09-24 16:55:02,553 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 16:55:02,553 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 16:55:02,554 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-09-24 16:55:02,554 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-09-24 16:55:02,554 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-09-24 16:55:02,554 INFO  L130     BoogieDeclarations]: Found specification of procedure stopSystem
[2020-09-24 16:55:02,554 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-09-24 16:55:02,554 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-09-24 16:55:02,554 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-09-24 16:55:02,555 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-09-24 16:55:02,555 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-09-24 16:55:02,555 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-09-24 16:55:02,555 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry
[2020-09-24 16:55:02,555 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-09-24 16:55:02,556 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-09-24 16:55:02,556 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-09-24 16:55:02,556 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-09-24 16:55:02,556 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1
[2020-09-24 16:55:02,557 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-09-24 16:55:02,557 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base
[2020-09-24 16:55:02,557 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterLevel
[2020-09-24 16:55:02,557 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor
[2020-09-24 16:55:02,557 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-09-24 16:55:02,557 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-24 16:55:02,557 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-09-24 16:55:02,558 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-09-24 16:55:02,558 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-09-24 16:55:02,558 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-09-24 16:55:02,558 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-09-24 16:55:02,558 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-09-24 16:55:02,558 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-09-24 16:55:02,558 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 16:55:02,559 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-09-24 16:55:02,560 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-09-24 16:55:02,560 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-09-24 16:55:02,561 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-09-24 16:55:02,561 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-09-24 16:55:02,561 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-09-24 16:55:02,562 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-09-24 16:55:02,562 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-09-24 16:55:02,562 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-09-24 16:55:02,562 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-09-24 16:55:02,562 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-09-24 16:55:02,563 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-24 16:55:02,563 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-09-24 16:55:02,563 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-09-24 16:55:02,564 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-09-24 16:55:02,564 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-09-24 16:55:02,564 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-09-24 16:55:02,564 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-09-24 16:55:02,564 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 16:55:02,564 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-09-24 16:55:02,565 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 16:55:03,804 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 16:55:03,805 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-09-24 16:55:03,812 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:55:03 BoogieIcfgContainer
[2020-09-24 16:55:03,812 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 16:55:03,814 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 16:55:03,814 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 16:55:03,817 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 16:55:03,818 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:55:01" (1/3) ...
[2020-09-24 16:55:03,818 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@696668d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:55:03, skipping insertion in model container
[2020-09-24 16:55:03,819 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:02" (2/3) ...
[2020-09-24 16:55:03,819 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@696668d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:55:03, skipping insertion in model container
[2020-09-24 16:55:03,819 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:55:03" (3/3) ...
[2020-09-24 16:55:03,821 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec4_product43.cil.c
[2020-09-24 16:55:03,835 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 16:55:03,847 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 16:55:03,871 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 16:55:03,906 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 16:55:03,906 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 16:55:03,907 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 16:55:03,907 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 16:55:03,907 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 16:55:03,907 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 16:55:03,907 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 16:55:03,907 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 16:55:03,939 INFO  L276                IsEmpty]: Start isEmpty. Operand 309 states.
[2020-09-24 16:55:03,957 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 143
[2020-09-24 16:55:03,957 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:55:03,959 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]
[2020-09-24 16:55:03,960 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:55:03,969 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:55:03,969 INFO  L82        PathProgramCache]: Analyzing trace with hash 970389308, now seen corresponding path program 1 times
[2020-09-24 16:55:03,981 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:55:03,981 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889115206]
[2020-09-24 16:55:03,982 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:55:04,372 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:04,537 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:04,754 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:06,147 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:07,075 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:09,906 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:26,114 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:26,114 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 173
[2020-09-24 16:55:26,114 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 5
[2020-09-24 16:55:26,114 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 21733
[2020-09-24 16:55:26,116 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:26,116 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-24 16:55:26,116 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 138
[2020-09-24 16:55:26,116 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 31
[2020-09-24 16:55:26,119 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-09-24 16:55:26,568 WARN  L193               SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-09-24 16:55:26,571 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 16:55:26,595 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:26,619 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:26,725 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:26,726 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 85
[2020-09-24 16:55:26,726 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:26,726 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 128
[2020-09-24 16:55:26,727 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:26,727 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:55:26,727 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:55:26,727 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:55:26,728 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:55:26,826 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-09-24 16:55:26,829 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:26,832 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:26,843 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:26,843 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:55:26,850 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:26,850 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 12
[2020-09-24 16:55:26,851 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:26,851 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:55:26,854 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:55:26,854 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:55:26,854 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-09-24 16:55:26,857 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-09-24 16:55:26,858 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:26,862 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:26,864 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:26,865 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:55:26,865 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:26,865 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-24 16:55:26,866 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:26,866 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:55:26,867 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:55:26,867 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:55:26,867 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:55:26,872 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-09-24 16:55:26,873 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:26,875 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:26,880 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:26,881 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:55:26,881 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:26,882 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-24 16:55:26,882 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:26,882 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:55:26,883 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:55:26,883 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:55:26,883 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:55:26,886 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-09-24 16:55:26,887 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:26,888 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:26,890 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:26,891 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:55:26,891 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:26,892 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 16:55:26,892 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:26,892 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:55:26,893 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:55:26,893 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:55:26,893 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:55:26,895 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120
[2020-09-24 16:55:26,897 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:26,899 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:26,903 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:26,904 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:55:26,904 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:26,904 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-24 16:55:26,905 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:26,905 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:55:26,906 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:55:26,906 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 16:55:26,906 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:55:26,914 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130
[2020-09-24 16:55:26,916 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:26,918 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:26,939 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:26,940 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:55:26,940 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:26,941 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 23
[2020-09-24 16:55:26,941 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:26,942 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 16:55:26,942 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:55:26,942 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 16:55:26,943 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:55:27,052 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 16:55:27,053 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1889115206]
[2020-09-24 16:55:27,055 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 16:55:27,056 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-09-24 16:55:27,057 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786409685]
[2020-09-24 16:55:27,066 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-09-24 16:55:27,067 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 16:55:27,094 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-09-24 16:55:27,095 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2020-09-24 16:55:27,099 INFO  L87              Difference]: Start difference. First operand 309 states. Second operand 8 states.
[2020-09-24 16:55:28,101 WARN  L193               SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 16:55:29,524 WARN  L193               SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 16:55:29,874 WARN  L193               SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-09-24 16:55:30,229 WARN  L193               SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 16:55:30,573 WARN  L193               SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-09-24 16:55:30,868 WARN  L193               SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 16:55:31,781 WARN  L193               SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-09-24 16:55:32,112 WARN  L193               SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-09-24 16:55:32,496 WARN  L193               SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-09-24 16:55:33,561 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 16:55:33,562 INFO  L93              Difference]: Finished difference Result 592 states and 733 transitions.
[2020-09-24 16:55:33,569 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-09-24 16:55:33,571 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 142
[2020-09-24 16:55:33,572 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 16:55:33,601 INFO  L225             Difference]: With dead ends: 592
[2020-09-24 16:55:33,601 INFO  L226             Difference]: Without dead ends: 394
[2020-09-24 16:55:33,608 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272
[2020-09-24 16:55:33,632 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 394 states.
[2020-09-24 16:55:33,743 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 350.
[2020-09-24 16:55:33,744 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 350 states.
[2020-09-24 16:55:33,752 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 399 transitions.
[2020-09-24 16:55:33,755 INFO  L78                 Accepts]: Start accepts. Automaton has 350 states and 399 transitions. Word has length 142
[2020-09-24 16:55:33,760 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 16:55:33,761 INFO  L479      AbstractCegarLoop]: Abstraction has 350 states and 399 transitions.
[2020-09-24 16:55:33,761 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-09-24 16:55:33,761 INFO  L276                IsEmpty]: Start isEmpty. Operand 350 states and 399 transitions.
[2020-09-24 16:55:33,775 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 199
[2020-09-24 16:55:33,776 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:55:33,780 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 16:55:33,781 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 16:55:33,781 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:55:33,781 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:55:33,782 INFO  L82        PathProgramCache]: Analyzing trace with hash -1617864589, now seen corresponding path program 1 times
[2020-09-24 16:55:33,782 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:55:33,783 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441523217]
[2020-09-24 16:55:33,788 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:55:33,859 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:33,916 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:34,015 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:35,145 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:45,956 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:45,956 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 243
[2020-09-24 16:55:45,956 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-24 16:55:45,956 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 12093
[2020-09-24 16:55:45,956 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:45,957 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:55:45,957 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 128
[2020-09-24 16:55:45,957 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 3
[2020-09-24 16:55:45,957 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:55:46,210 WARN  L193               SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-09-24 16:55:46,211 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 16:55:46,220 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:46,231 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:46,312 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:46,312 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 85
[2020-09-24 16:55:46,313 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:46,313 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 89
[2020-09-24 16:55:46,313 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:46,313 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:55:46,313 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:55:46,314 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:55:46,314 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:55:46,345 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-09-24 16:55:46,346 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:46,347 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:46,348 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:46,348 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:55:46,348 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:46,349 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-24 16:55:46,349 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:46,349 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:55:46,349 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:55:46,350 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:55:46,350 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:55:46,353 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-09-24 16:55:46,353 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:46,355 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:46,356 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:46,356 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:55:46,356 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:46,357 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-24 16:55:46,357 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:46,357 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:55:46,357 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:55:46,357 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:55:46,358 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:55:46,359 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-09-24 16:55:46,359 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:46,361 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:46,365 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:46,365 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:55:46,365 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:46,366 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-24 16:55:46,366 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:46,366 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:55:46,366 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:55:46,366 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:55:46,367 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:55:46,368 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-09-24 16:55:46,369 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:46,370 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:46,371 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:46,371 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:55:46,371 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:46,371 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-24 16:55:46,372 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:46,372 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:55:46,372 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:55:46,372 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:55:46,373 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:55:46,382 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118
[2020-09-24 16:55:46,389 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:46,394 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:46,404 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:46,535 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:46,535 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 72
[2020-09-24 16:55:46,536 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 16:55:46,536 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 145
[2020-09-24 16:55:46,536 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:46,536 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:55:46,536 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 69
[2020-09-24 16:55:46,536 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:55:46,537 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:55:46,541 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 16:55:46,542 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:46,544 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:46,550 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:46,550 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 27
[2020-09-24 16:55:46,551 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:46,551 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-24 16:55:46,551 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:46,551 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:55:46,551 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:55:46,552 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:55:46,552 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:55:46,554 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 16:55:46,555 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:46,556 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:46,560 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:46,560 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 16:55:46,561 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:46,561 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 16:55:46,561 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:46,561 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:55:46,562 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:55:46,562 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:55:46,562 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:55:46,564 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26
[2020-09-24 16:55:46,565 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:46,568 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:46,575 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:46,576 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 37
[2020-09-24 16:55:46,576 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:46,576 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-09-24 16:55:46,577 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:46,577 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:55:46,577 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:55:46,578 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:55:46,578 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:55:46,580 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-09-24 16:55:46,581 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:46,583 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:46,584 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:46,585 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 21
[2020-09-24 16:55:46,585 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:46,585 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:55:46,586 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:46,586 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:55:46,586 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:55:46,586 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:55:46,587 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:55:46,588 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-09-24 16:55:46,589 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:46,590 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:46,592 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:46,592 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:55:46,592 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:46,593 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:55:46,593 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:46,593 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:55:46,593 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:55:46,594 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:55:46,594 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:55:46,595 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2020-09-24 16:55:46,596 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:46,597 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:46,599 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:46,599 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-09-24 16:55:46,600 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:46,600 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:55:46,600 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:46,600 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:55:46,601 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:55:46,601 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:55:46,601 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:55:46,604 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176
[2020-09-24 16:55:46,605 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:46,607 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:46,608 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:46,608 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:55:46,609 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:46,609 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:55:46,609 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:46,609 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:55:46,609 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 16:55:46,610 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:55:46,610 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:55:46,611 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186
[2020-09-24 16:55:46,612 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:46,613 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:46,615 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:55:46,615 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 16:55:46,615 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:55:46,615 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:55:46,616 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 16:55:46,616 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:55:46,616 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 16:55:46,616 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:55:46,616 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:55:46,655 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 16:55:46,656 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441523217]
[2020-09-24 16:55:46,656 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 16:55:46,657 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-24 16:55:46,657 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589115017]
[2020-09-24 16:55:46,659 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 16:55:46,660 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 16:55:46,660 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 16:55:46,660 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-09-24 16:55:46,660 INFO  L87              Difference]: Start difference. First operand 350 states and 399 transitions. Second operand 5 states.
[2020-09-24 16:55:47,442 WARN  L193               SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-09-24 16:55:48,798 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 16:55:48,799 INFO  L93              Difference]: Finished difference Result 553 states and 640 transitions.
[2020-09-24 16:55:48,799 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-09-24 16:55:48,799 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 198
[2020-09-24 16:55:48,800 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 16:55:48,811 INFO  L225             Difference]: With dead ends: 553
[2020-09-24 16:55:48,811 INFO  L226             Difference]: Without dead ends: 384
[2020-09-24 16:55:48,816 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2020-09-24 16:55:48,820 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 384 states.
[2020-09-24 16:55:48,886 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 333.
[2020-09-24 16:55:48,887 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 333 states.
[2020-09-24 16:55:48,889 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 368 transitions.
[2020-09-24 16:55:48,889 INFO  L78                 Accepts]: Start accepts. Automaton has 333 states and 368 transitions. Word has length 198
[2020-09-24 16:55:48,890 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 16:55:48,890 INFO  L479      AbstractCegarLoop]: Abstraction has 333 states and 368 transitions.
[2020-09-24 16:55:48,890 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 16:55:48,891 INFO  L276                IsEmpty]: Start isEmpty. Operand 333 states and 368 transitions.
[2020-09-24 16:55:48,893 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 208
[2020-09-24 16:55:48,893 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:55:48,893 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:55:48,894 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 16:55:48,894 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:55:48,894 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:55:48,894 INFO  L82        PathProgramCache]: Analyzing trace with hash -631856202, now seen corresponding path program 1 times
[2020-09-24 16:55:48,895 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:55:48,895 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305766551]
[2020-09-24 16:55:48,895 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:55:48,940 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:55:48,992 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 16:55:49,446 FATAL L256   erpolLogProxyWrapper]: Now shrinking...