/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product61.cil.c


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


This is Ultimate 0.1.25-5644d1e-m
[2020-08-18 19:18:52,904 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-08-18 19:18:52,907 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-08-18 19:18:52,947 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-08-18 19:18:52,948 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-08-18 19:18:52,958 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-08-18 19:18:52,960 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-08-18 19:18:52,964 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-08-18 19:18:52,966 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-08-18 19:18:52,969 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-08-18 19:18:52,970 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-08-18 19:18:52,971 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-08-18 19:18:52,971 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-08-18 19:18:52,974 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-08-18 19:18:52,977 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-08-18 19:18:52,978 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-08-18 19:18:52,980 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-08-18 19:18:52,981 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-08-18 19:18:52,982 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-08-18 19:18:52,991 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-08-18 19:18:52,993 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-08-18 19:18:52,994 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-08-18 19:18:52,995 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-08-18 19:18:52,996 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-08-18 19:18:53,008 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-08-18 19:18:53,008 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-08-18 19:18:53,013 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-08-18 19:18:53,015 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-08-18 19:18:53,015 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-08-18 19:18:53,016 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-08-18 19:18:53,017 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-08-18 19:18:53,019 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-08-18 19:18:53,022 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-08-18 19:18:53,023 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-08-18 19:18:53,025 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-08-18 19:18:53,025 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-08-18 19:18:53,026 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-08-18 19:18:53,026 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-08-18 19:18:53,027 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-08-18 19:18:53,029 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-08-18 19:18:53,030 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-08-18 19:18:53,031 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-08-18 19:18:53,070 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-08-18 19:18:53,071 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-08-18 19:18:53,073 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-08-18 19:18:53,073 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-08-18 19:18:53,073 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-08-18 19:18:53,074 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-08-18 19:18:53,074 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-08-18 19:18:53,074 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-08-18 19:18:53,074 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-08-18 19:18:53,074 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-08-18 19:18:53,075 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-08-18 19:18:53,076 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-08-18 19:18:53,076 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-08-18 19:18:53,076 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-08-18 19:18:53,076 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-08-18 19:18:53,077 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-08-18 19:18:53,077 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-08-18 19:18:53,077 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-08-18 19:18:53,077 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-08-18 19:18:53,077 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-08-18 19:18:53,078 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-08-18 19:18:53,078 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-18 19:18:53,078 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-08-18 19:18:53,079 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-08-18 19:18:53,079 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-08-18 19:18:53,079 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-08-18 19:18:53,079 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-08-18 19:18:53,079 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-08-18 19:18:53,079 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-08-18 19:18:53,080 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER;
[2020-08-18 19:18:53,429 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-08-18 19:18:53,442 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-08-18 19:18:53,445 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-08-18 19:18:53,447 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-08-18 19:18:53,447 INFO  L275        PluginConnector]: CDTParser initialized
[2020-08-18 19:18:53,448 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product61.cil.c
[2020-08-18 19:18:53,527 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37ad12fd5/18f4ba85460741e184385a64755d2b68/FLAG0e85996f7
[2020-08-18 19:18:54,076 INFO  L306              CDTParser]: Found 1 translation units.
[2020-08-18 19:18:54,076 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product61.cil.c
[2020-08-18 19:18:54,091 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37ad12fd5/18f4ba85460741e184385a64755d2b68/FLAG0e85996f7
[2020-08-18 19:18:54,364 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37ad12fd5/18f4ba85460741e184385a64755d2b68
[2020-08-18 19:18:54,373 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-08-18 19:18:54,375 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-08-18 19:18:54,376 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-08-18 19:18:54,376 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-08-18 19:18:54,380 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-08-18 19:18:54,381 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:18:54" (1/1) ...
[2020-08-18 19:18:54,384 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53d96e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:18:54, skipping insertion in model container
[2020-08-18 19:18:54,384 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:18:54" (1/1) ...
[2020-08-18 19:18:54,391 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-08-18 19:18:54,460 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-08-18 19:18:54,953 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-18 19:18:54,970 INFO  L203         MainTranslator]: Completed pre-run
[2020-08-18 19:18:55,045 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-18 19:18:55,088 INFO  L208         MainTranslator]: Completed translation
[2020-08-18 19:18:55,089 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:18:55 WrapperNode
[2020-08-18 19:18:55,089 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-08-18 19:18:55,090 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-08-18 19:18:55,090 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-08-18 19:18:55,090 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-08-18 19:18:55,104 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:18:55" (1/1) ...
[2020-08-18 19:18:55,105 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:18:55" (1/1) ...
[2020-08-18 19:18:55,125 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:18:55" (1/1) ...
[2020-08-18 19:18:55,125 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:18:55" (1/1) ...
[2020-08-18 19:18:55,155 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:18:55" (1/1) ...
[2020-08-18 19:18:55,172 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:18:55" (1/1) ...
[2020-08-18 19:18:55,181 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:18:55" (1/1) ...
[2020-08-18 19:18:55,193 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-08-18 19:18:55,195 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-08-18 19:18:55,195 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-08-18 19:18:55,196 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-08-18 19:18:55,197 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:18:55" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-18 19:18:55,285 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-08-18 19:18:55,286 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-08-18 19:18:55,286 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-08-18 19:18:55,287 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1
[2020-08-18 19:18:55,287 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2
[2020-08-18 19:18:55,288 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-08-18 19:18:55,288 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-08-18 19:18:55,288 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-08-18 19:18:55,288 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-08-18 19:18:55,288 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-08-18 19:18:55,289 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-08-18 19:18:55,289 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-08-18 19:18:55,289 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-08-18 19:18:55,290 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-08-18 19:18:55,290 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-08-18 19:18:55,291 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-08-18 19:18:55,291 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-08-18 19:18:55,291 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-08-18 19:18:55,291 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-08-18 19:18:55,291 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-08-18 19:18:55,292 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-08-18 19:18:55,292 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-08-18 19:18:55,293 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-08-18 19:18:55,293 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-08-18 19:18:55,294 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-08-18 19:18:55,295 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-08-18 19:18:55,295 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-08-18 19:18:55,295 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-08-18 19:18:55,296 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry
[2020-08-18 19:18:55,296 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry
[2020-08-18 19:18:55,296 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-08-18 19:18:55,296 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base
[2020-08-18 19:18:55,296 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor
[2020-08-18 19:18:55,296 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery
[2020-08-18 19:18:55,297 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-08-18 19:18:55,297 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor
[2020-08-18 19:18:55,297 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-08-18 19:18:55,297 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-08-18 19:18:55,297 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-08-18 19:18:55,298 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-08-18 19:18:55,298 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-08-18 19:18:55,298 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterLevel
[2020-08-18 19:18:55,298 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterLevel
[2020-08-18 19:18:55,298 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-08-18 19:18:55,298 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-08-18 19:18:55,298 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-08-18 19:18:55,300 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-08-18 19:18:55,300 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-08-18 19:18:55,300 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-08-18 19:18:55,300 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1
[2020-08-18 19:18:55,300 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2
[2020-08-18 19:18:55,300 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-08-18 19:18:55,301 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-08-18 19:18:55,301 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-08-18 19:18:55,301 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-08-18 19:18:55,301 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-08-18 19:18:55,301 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-08-18 19:18:55,302 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-08-18 19:18:55,302 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-08-18 19:18:55,302 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-08-18 19:18:55,302 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-08-18 19:18:55,302 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-08-18 19:18:55,303 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-08-18 19:18:55,303 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-08-18 19:18:55,303 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-08-18 19:18:55,303 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-08-18 19:18:55,303 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-08-18 19:18:55,303 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-08-18 19:18:55,303 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-08-18 19:18:55,304 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-08-18 19:18:55,304 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-08-18 19:18:55,304 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-08-18 19:18:55,305 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-08-18 19:18:55,305 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-08-18 19:18:55,305 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-08-18 19:18:55,305 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-08-18 19:18:55,306 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-08-18 19:18:55,306 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-08-18 19:18:55,307 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-08-18 19:18:55,307 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-08-18 19:18:55,307 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-08-18 19:18:55,307 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-08-18 19:18:55,307 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-08-18 19:18:55,307 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-08-18 19:18:55,307 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-08-18 19:18:55,307 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry
[2020-08-18 19:18:55,307 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry
[2020-08-18 19:18:55,307 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-08-18 19:18:55,308 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-08-18 19:18:55,308 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-08-18 19:18:55,308 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base
[2020-08-18 19:18:55,308 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterLevel
[2020-08-18 19:18:55,308 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor
[2020-08-18 19:18:55,308 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterLevel
[2020-08-18 19:18:55,308 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery
[2020-08-18 19:18:55,308 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-08-18 19:18:55,308 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor
[2020-08-18 19:18:55,308 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-08-18 19:18:55,308 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-08-18 19:18:55,309 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-08-18 19:18:56,380 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-08-18 19:18:56,380 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-08-18 19:18:56,389 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:18:56 BoogieIcfgContainer
[2020-08-18 19:18:56,390 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-08-18 19:18:56,393 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-08-18 19:18:56,393 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-08-18 19:18:56,396 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-08-18 19:18:56,396 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 07:18:54" (1/3) ...
[2020-08-18 19:18:56,397 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bca9f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:18:56, skipping insertion in model container
[2020-08-18 19:18:56,398 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:18:55" (2/3) ...
[2020-08-18 19:18:56,399 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bca9f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:18:56, skipping insertion in model container
[2020-08-18 19:18:56,399 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:18:56" (3/3) ...
[2020-08-18 19:18:56,402 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec2_product61.cil.c
[2020-08-18 19:18:56,413 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-08-18 19:18:56,422 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-08-18 19:18:56,434 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-08-18 19:18:56,459 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-08-18 19:18:56,460 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-08-18 19:18:56,460 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-08-18 19:18:56,460 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-08-18 19:18:56,460 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-08-18 19:18:56,460 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-08-18 19:18:56,460 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-08-18 19:18:56,461 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-08-18 19:18:56,486 INFO  L276                IsEmpty]: Start isEmpty. Operand 198 states.
[2020-08-18 19:18:56,503 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2020-08-18 19:18:56,503 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 19:18:56,504 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]
[2020-08-18 19:18:56,505 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 19:18:56,511 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 19:18:56,511 INFO  L82        PathProgramCache]: Analyzing trace with hash 1299073538, now seen corresponding path program 1 times
[2020-08-18 19:18:56,518 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 19:18:56,519 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968126988]
[2020-08-18 19:18:56,519 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 19:18:56,809 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:18:57,264 WARN  L193               SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-18 19:18:57,266 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 19:18:57,277 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:18:57,314 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 19:18:57,315 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:18:57,317 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 19:18:57,318 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:18:57,319 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 19:18:57,320 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:18:57,322 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 19:18:57,323 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:18:57,335 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2020-08-18 19:18:57,336 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:18:57,338 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2020-08-18 19:18:57,340 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:18:57,342 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42
[2020-08-18 19:18:57,343 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:18:57,358 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 19:18:57,359 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968126988]
[2020-08-18 19:18:57,361 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 19:18:57,361 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-08-18 19:18:57,362 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082671575]
[2020-08-18 19:18:57,368 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-08-18 19:18:57,368 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 19:18:57,383 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-08-18 19:18:57,384 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2020-08-18 19:18:57,386 INFO  L87              Difference]: Start difference. First operand 198 states. Second operand 4 states.
[2020-08-18 19:18:58,748 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 19:18:58,748 INFO  L93              Difference]: Finished difference Result 344 states and 448 transitions.
[2020-08-18 19:18:58,749 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-08-18 19:18:58,750 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 51
[2020-08-18 19:18:58,751 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 19:18:58,765 INFO  L225             Difference]: With dead ends: 344
[2020-08-18 19:18:58,766 INFO  L226             Difference]: Without dead ends: 190
[2020-08-18 19:18:58,771 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2020-08-18 19:18:58,789 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 190 states.
[2020-08-18 19:18:58,864 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 155.
[2020-08-18 19:18:58,865 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 155 states.
[2020-08-18 19:18:58,868 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 185 transitions.
[2020-08-18 19:18:58,869 INFO  L78                 Accepts]: Start accepts. Automaton has 155 states and 185 transitions. Word has length 51
[2020-08-18 19:18:58,870 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 19:18:58,870 INFO  L479      AbstractCegarLoop]: Abstraction has 155 states and 185 transitions.
[2020-08-18 19:18:58,870 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-08-18 19:18:58,870 INFO  L276                IsEmpty]: Start isEmpty. Operand 155 states and 185 transitions.
[2020-08-18 19:18:58,891 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2020-08-18 19:18:58,892 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 19:18:58,892 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 19:18:58,892 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-08-18 19:18:58,892 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 19:18:58,893 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 19:18:58,893 INFO  L82        PathProgramCache]: Analyzing trace with hash -155172335, now seen corresponding path program 1 times
[2020-08-18 19:18:58,893 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 19:18:58,894 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761166474]
[2020-08-18 19:18:58,894 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 19:18:58,966 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:18:59,276 WARN  L193               SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-18 19:18:59,277 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 19:18:59,284 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:18:59,307 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 19:18:59,307 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:18:59,308 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 19:18:59,309 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:18:59,310 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 19:18:59,311 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:18:59,312 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 19:18:59,315 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:18:59,323 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2020-08-18 19:18:59,324 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:18:59,325 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 19:18:59,326 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:18:59,328 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43
[2020-08-18 19:18:59,328 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:18:59,335 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 19:18:59,336 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761166474]
[2020-08-18 19:18:59,336 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 19:18:59,336 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-08-18 19:18:59,336 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309111658]
[2020-08-18 19:18:59,338 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-08-18 19:18:59,338 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 19:18:59,339 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-08-18 19:18:59,339 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-08-18 19:18:59,339 INFO  L87              Difference]: Start difference. First operand 155 states and 185 transitions. Second operand 5 states.
[2020-08-18 19:18:59,861 WARN  L193               SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-08-18 19:19:01,025 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 19:19:01,025 INFO  L93              Difference]: Finished difference Result 289 states and 359 transitions.
[2020-08-18 19:19:01,026 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-08-18 19:19:01,026 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 52
[2020-08-18 19:19:01,027 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 19:19:01,030 INFO  L225             Difference]: With dead ends: 289
[2020-08-18 19:19:01,030 INFO  L226             Difference]: Without dead ends: 180
[2020-08-18 19:19:01,032 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2020-08-18 19:19:01,033 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 180 states.
[2020-08-18 19:19:01,070 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 146.
[2020-08-18 19:19:01,070 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 146 states.
[2020-08-18 19:19:01,072 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 173 transitions.
[2020-08-18 19:19:01,072 INFO  L78                 Accepts]: Start accepts. Automaton has 146 states and 173 transitions. Word has length 52
[2020-08-18 19:19:01,072 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 19:19:01,073 INFO  L479      AbstractCegarLoop]: Abstraction has 146 states and 173 transitions.
[2020-08-18 19:19:01,073 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-08-18 19:19:01,073 INFO  L276                IsEmpty]: Start isEmpty. Operand 146 states and 173 transitions.
[2020-08-18 19:19:01,075 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 57
[2020-08-18 19:19:01,075 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 19:19:01,075 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]
[2020-08-18 19:19:01,076 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-08-18 19:19:01,076 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 19:19:01,076 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 19:19:01,076 INFO  L82        PathProgramCache]: Analyzing trace with hash -1504957008, now seen corresponding path program 1 times
[2020-08-18 19:19:01,076 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 19:19:01,077 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812463034]
[2020-08-18 19:19:01,077 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 19:19:01,111 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:01,396 WARN  L193               SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-18 19:19:01,398 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 19:19:01,413 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:01,445 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 19:19:01,446 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:01,448 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 19:19:01,448 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:01,450 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 19:19:01,451 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:01,464 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 19:19:01,466 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:01,478 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2020-08-18 19:19:01,479 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:01,481 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41
[2020-08-18 19:19:01,482 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:01,484 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47
[2020-08-18 19:19:01,484 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:01,496 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 19:19:01,496 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812463034]
[2020-08-18 19:19:01,497 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 19:19:01,497 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2020-08-18 19:19:01,497 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943036786]
[2020-08-18 19:19:01,498 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-08-18 19:19:01,498 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 19:19:01,498 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-08-18 19:19:01,499 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2020-08-18 19:19:01,499 INFO  L87              Difference]: Start difference. First operand 146 states and 173 transitions. Second operand 9 states.
[2020-08-18 19:19:01,929 WARN  L193               SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-18 19:19:02,246 WARN  L193               SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-18 19:19:02,497 WARN  L193               SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-18 19:19:02,748 WARN  L193               SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-18 19:19:04,265 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 19:19:04,265 INFO  L93              Difference]: Finished difference Result 298 states and 374 transitions.
[2020-08-18 19:19:04,265 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-08-18 19:19:04,266 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 56
[2020-08-18 19:19:04,266 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 19:19:04,270 INFO  L225             Difference]: With dead ends: 298
[2020-08-18 19:19:04,270 INFO  L226             Difference]: Without dead ends: 180
[2020-08-18 19:19:04,271 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182
[2020-08-18 19:19:04,272 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 180 states.
[2020-08-18 19:19:04,308 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 146.
[2020-08-18 19:19:04,308 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 146 states.
[2020-08-18 19:19:04,309 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 172 transitions.
[2020-08-18 19:19:04,309 INFO  L78                 Accepts]: Start accepts. Automaton has 146 states and 172 transitions. Word has length 56
[2020-08-18 19:19:04,310 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 19:19:04,310 INFO  L479      AbstractCegarLoop]: Abstraction has 146 states and 172 transitions.
[2020-08-18 19:19:04,310 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-08-18 19:19:04,310 INFO  L276                IsEmpty]: Start isEmpty. Operand 146 states and 172 transitions.
[2020-08-18 19:19:04,313 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 75
[2020-08-18 19:19:04,313 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 19:19:04,313 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]
[2020-08-18 19:19:04,314 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-08-18 19:19:04,314 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 19:19:04,314 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 19:19:04,314 INFO  L82        PathProgramCache]: Analyzing trace with hash -775636071, now seen corresponding path program 1 times
[2020-08-18 19:19:04,314 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 19:19:04,315 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137952766]
[2020-08-18 19:19:04,315 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 19:19:04,344 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:04,582 WARN  L193               SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-18 19:19:04,583 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 19:19:04,597 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:04,615 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 19:19:04,616 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:04,617 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 19:19:04,618 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:04,619 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 19:19:04,620 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:04,621 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 19:19:04,622 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:04,635 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2020-08-18 19:19:04,636 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:04,664 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39
[2020-08-18 19:19:04,665 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:04,671 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 19:19:04,676 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:04,681 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 19:19:04,683 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:04,699 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 19:19:04,700 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:04,702 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59
[2020-08-18 19:19:04,703 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:04,706 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65
[2020-08-18 19:19:04,706 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:04,730 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 19:19:04,731 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137952766]
[2020-08-18 19:19:04,731 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 19:19:04,731 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-08-18 19:19:04,731 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563815302]
[2020-08-18 19:19:04,732 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-08-18 19:19:04,732 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 19:19:04,732 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-08-18 19:19:04,733 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2020-08-18 19:19:04,733 INFO  L87              Difference]: Start difference. First operand 146 states and 172 transitions. Second operand 7 states.
[2020-08-18 19:19:05,067 WARN  L193               SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-18 19:19:06,349 WARN  L193               SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-08-18 19:19:07,278 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 19:19:07,279 INFO  L93              Difference]: Finished difference Result 403 states and 508 transitions.
[2020-08-18 19:19:07,279 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-08-18 19:19:07,279 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 74
[2020-08-18 19:19:07,280 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 19:19:07,283 INFO  L225             Difference]: With dead ends: 403
[2020-08-18 19:19:07,284 INFO  L226             Difference]: Without dead ends: 285
[2020-08-18 19:19:07,285 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240
[2020-08-18 19:19:07,286 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 285 states.
[2020-08-18 19:19:07,342 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 239.
[2020-08-18 19:19:07,343 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 239 states.
[2020-08-18 19:19:07,344 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 274 transitions.
[2020-08-18 19:19:07,345 INFO  L78                 Accepts]: Start accepts. Automaton has 239 states and 274 transitions. Word has length 74
[2020-08-18 19:19:07,345 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 19:19:07,345 INFO  L479      AbstractCegarLoop]: Abstraction has 239 states and 274 transitions.
[2020-08-18 19:19:07,345 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-08-18 19:19:07,346 INFO  L276                IsEmpty]: Start isEmpty. Operand 239 states and 274 transitions.
[2020-08-18 19:19:07,347 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 89
[2020-08-18 19:19:07,347 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 19:19:07,348 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]
[2020-08-18 19:19:07,348 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-08-18 19:19:07,348 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 19:19:07,348 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 19:19:07,348 INFO  L82        PathProgramCache]: Analyzing trace with hash 2094752105, now seen corresponding path program 1 times
[2020-08-18 19:19:07,349 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 19:19:07,349 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643157285]
[2020-08-18 19:19:07,349 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 19:19:07,377 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:07,632 WARN  L193               SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-18 19:19:07,633 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 19:19:07,646 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:07,661 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 19:19:07,662 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:07,663 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 19:19:07,664 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:07,665 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 19:19:07,665 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:07,667 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 19:19:07,668 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:07,676 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2020-08-18 19:19:07,677 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:07,701 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39
[2020-08-18 19:19:07,704 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:07,709 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 19:19:07,710 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:07,714 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 19:19:07,717 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:07,720 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 19:19:07,721 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:07,723 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-18 19:19:07,724 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:07,731 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16
[2020-08-18 19:19:07,732 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:07,734 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73
[2020-08-18 19:19:07,735 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:07,751 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79
[2020-08-18 19:19:07,752 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:07,765 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 19:19:07,766 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643157285]
[2020-08-18 19:19:07,767 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 19:19:07,767 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2020-08-18 19:19:07,767 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126238858]
[2020-08-18 19:19:07,769 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-08-18 19:19:07,769 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 19:19:07,769 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-08-18 19:19:07,769 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2020-08-18 19:19:07,769 INFO  L87              Difference]: Start difference. First operand 239 states and 274 transitions. Second operand 9 states.
[2020-08-18 19:19:08,172 WARN  L193               SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-18 19:19:09,206 WARN  L193               SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-18 19:19:09,563 WARN  L193               SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-18 19:19:10,135 WARN  L193               SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-18 19:19:10,361 WARN  L193               SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-18 19:19:11,673 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 19:19:11,673 INFO  L93              Difference]: Finished difference Result 708 states and 878 transitions.
[2020-08-18 19:19:11,673 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2020-08-18 19:19:11,674 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 88
[2020-08-18 19:19:11,674 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 19:19:11,679 INFO  L225             Difference]: With dead ends: 708
[2020-08-18 19:19:11,679 INFO  L226             Difference]: Without dead ends: 497
[2020-08-18 19:19:11,681 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380
[2020-08-18 19:19:11,682 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 497 states.
[2020-08-18 19:19:11,771 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 426.
[2020-08-18 19:19:11,771 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 426 states.
[2020-08-18 19:19:11,774 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 488 transitions.
[2020-08-18 19:19:11,774 INFO  L78                 Accepts]: Start accepts. Automaton has 426 states and 488 transitions. Word has length 88
[2020-08-18 19:19:11,775 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 19:19:11,775 INFO  L479      AbstractCegarLoop]: Abstraction has 426 states and 488 transitions.
[2020-08-18 19:19:11,775 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-08-18 19:19:11,775 INFO  L276                IsEmpty]: Start isEmpty. Operand 426 states and 488 transitions.
[2020-08-18 19:19:11,777 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 93
[2020-08-18 19:19:11,777 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 19:19:11,777 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]
[2020-08-18 19:19:11,777 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-08-18 19:19:11,778 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 19:19:11,778 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 19:19:11,778 INFO  L82        PathProgramCache]: Analyzing trace with hash 1169136517, now seen corresponding path program 1 times
[2020-08-18 19:19:11,778 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 19:19:11,779 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187780627]
[2020-08-18 19:19:11,779 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 19:19:11,801 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:12,054 WARN  L193               SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-18 19:19:12,055 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 19:19:12,067 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:12,080 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 19:19:12,081 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:12,082 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 19:19:12,083 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:12,084 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 19:19:12,084 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:12,085 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 19:19:12,086 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:12,116 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2020-08-18 19:19:12,117 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:12,126 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34
[2020-08-18 19:19:12,127 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:12,150 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43
[2020-08-18 19:19:12,153 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:12,161 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 19:19:12,164 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:12,167 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 19:19:12,169 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:12,172 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 19:19:12,174 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:12,176 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-18 19:19:12,177 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:12,178 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16
[2020-08-18 19:19:12,178 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:12,181 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77
[2020-08-18 19:19:12,181 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:12,183 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-08-18 19:19:12,184 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:12,209 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 19:19:12,209 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187780627]
[2020-08-18 19:19:12,210 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 19:19:12,210 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2020-08-18 19:19:12,211 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095917499]
[2020-08-18 19:19:12,211 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-08-18 19:19:12,211 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 19:19:12,211 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-08-18 19:19:12,212 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90
[2020-08-18 19:19:12,212 INFO  L87              Difference]: Start difference. First operand 426 states and 488 transitions. Second operand 10 states.
[2020-08-18 19:19:12,698 WARN  L193               SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-18 19:19:13,902 WARN  L193               SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-18 19:19:15,034 WARN  L193               SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-18 19:19:15,262 WARN  L193               SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-18 19:19:15,513 WARN  L193               SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-18 19:19:15,927 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 19:19:15,927 INFO  L93              Difference]: Finished difference Result 930 states and 1135 transitions.
[2020-08-18 19:19:15,928 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. 
[2020-08-18 19:19:15,929 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 92
[2020-08-18 19:19:15,929 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 19:19:15,933 INFO  L225             Difference]: With dead ends: 930
[2020-08-18 19:19:15,933 INFO  L226             Difference]: Without dead ends: 532
[2020-08-18 19:19:15,935 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702
[2020-08-18 19:19:15,937 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 532 states.
[2020-08-18 19:19:16,044 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 425.
[2020-08-18 19:19:16,044 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 425 states.
[2020-08-18 19:19:16,047 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 485 transitions.
[2020-08-18 19:19:16,047 INFO  L78                 Accepts]: Start accepts. Automaton has 425 states and 485 transitions. Word has length 92
[2020-08-18 19:19:16,048 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 19:19:16,048 INFO  L479      AbstractCegarLoop]: Abstraction has 425 states and 485 transitions.
[2020-08-18 19:19:16,048 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-08-18 19:19:16,048 INFO  L276                IsEmpty]: Start isEmpty. Operand 425 states and 485 transitions.
[2020-08-18 19:19:16,050 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 109
[2020-08-18 19:19:16,050 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 19:19:16,050 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 19:19:16,051 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-08-18 19:19:16,051 INFO  L427      AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 19:19:16,051 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 19:19:16,051 INFO  L82        PathProgramCache]: Analyzing trace with hash -1253770304, now seen corresponding path program 1 times
[2020-08-18 19:19:16,052 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 19:19:16,052 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093762832]
[2020-08-18 19:19:16,052 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 19:19:16,075 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:16,308 WARN  L193               SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-18 19:19:16,309 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 19:19:16,314 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:16,324 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 19:19:16,325 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:16,326 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 19:19:16,326 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:16,327 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 19:19:16,327 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:16,328 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 19:19:16,329 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:16,349 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2020-08-18 19:19:16,350 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:16,357 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34
[2020-08-18 19:19:16,357 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:16,366 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43
[2020-08-18 19:19:16,369 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:16,373 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 19:19:16,376 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:16,380 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 19:19:16,383 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:16,404 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 19:19:16,406 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:16,427 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-18 19:19:16,428 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:16,429 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16
[2020-08-18 19:19:16,430 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:16,432 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-18 19:19:16,433 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:16,434 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-18 19:19:16,434 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:16,435 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 19:19:16,436 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:16,440 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93
[2020-08-18 19:19:16,441 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:16,442 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-08-18 19:19:16,443 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:16,461 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2020-08-18 19:19:16,461 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093762832]
[2020-08-18 19:19:16,461 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 19:19:16,462 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2020-08-18 19:19:16,462 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414766646]
[2020-08-18 19:19:16,463 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-08-18 19:19:16,463 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 19:19:16,463 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-08-18 19:19:16,463 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90
[2020-08-18 19:19:16,463 INFO  L87              Difference]: Start difference. First operand 425 states and 485 transitions. Second operand 10 states.
[2020-08-18 19:19:17,396 WARN  L193               SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-08-18 19:19:17,620 WARN  L193               SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 192
[2020-08-18 19:19:17,871 WARN  L193               SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-08-18 19:19:18,098 WARN  L193               SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-08-18 19:19:19,387 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 19:19:19,387 INFO  L93              Difference]: Finished difference Result 937 states and 1168 transitions.
[2020-08-18 19:19:19,390 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-08-18 19:19:19,391 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 108
[2020-08-18 19:19:19,391 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 19:19:19,396 INFO  L225             Difference]: With dead ends: 937
[2020-08-18 19:19:19,396 INFO  L226             Difference]: Without dead ends: 540
[2020-08-18 19:19:19,398 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306
[2020-08-18 19:19:19,399 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 540 states.
[2020-08-18 19:19:19,506 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 435.
[2020-08-18 19:19:19,507 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 435 states.
[2020-08-18 19:19:19,513 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 495 transitions.
[2020-08-18 19:19:19,516 INFO  L78                 Accepts]: Start accepts. Automaton has 435 states and 495 transitions. Word has length 108
[2020-08-18 19:19:19,517 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 19:19:19,517 INFO  L479      AbstractCegarLoop]: Abstraction has 435 states and 495 transitions.
[2020-08-18 19:19:19,517 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-08-18 19:19:19,517 INFO  L276                IsEmpty]: Start isEmpty. Operand 435 states and 495 transitions.
[2020-08-18 19:19:19,521 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 109
[2020-08-18 19:19:19,521 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 19:19:19,522 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 19:19:19,522 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2020-08-18 19:19:19,522 INFO  L427      AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 19:19:19,522 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 19:19:19,523 INFO  L82        PathProgramCache]: Analyzing trace with hash 685391742, now seen corresponding path program 1 times
[2020-08-18 19:19:19,523 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 19:19:19,524 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665132405]
[2020-08-18 19:19:19,524 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 19:19:19,559 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:19,826 WARN  L193               SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-18 19:19:19,827 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 19:19:19,831 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:19,840 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 19:19:19,841 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:19,842 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 19:19:19,843 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:19,844 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 19:19:19,845 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:19,859 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 19:19:19,859 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:19,870 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2020-08-18 19:19:19,870 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:19,880 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34
[2020-08-18 19:19:19,881 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:19,892 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43
[2020-08-18 19:19:19,895 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:19,907 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 19:19:19,912 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:19,918 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 19:19:19,921 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:19,925 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 19:19:19,926 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:19,951 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-18 19:19:19,952 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:19,973 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16
[2020-08-18 19:19:19,975 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:19,978 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-18 19:19:19,979 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:19,985 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-18 19:19:19,986 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:19,992 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 19:19:19,993 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:20,000 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93
[2020-08-18 19:19:20,001 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:20,002 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-08-18 19:19:20,002 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:20,027 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2020-08-18 19:19:20,027 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665132405]
[2020-08-18 19:19:20,027 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 19:19:20,028 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12
[2020-08-18 19:19:20,031 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158678920]
[2020-08-18 19:19:20,032 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-08-18 19:19:20,032 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 19:19:20,033 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-08-18 19:19:20,033 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132
[2020-08-18 19:19:20,033 INFO  L87              Difference]: Start difference. First operand 435 states and 495 transitions. Second operand 12 states.
[2020-08-18 19:19:20,800 WARN  L193               SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-08-18 19:19:21,040 WARN  L193               SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-08-18 19:19:21,264 WARN  L193               SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-08-18 19:19:21,889 WARN  L193               SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-08-18 19:19:22,138 WARN  L193               SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-08-18 19:19:22,382 WARN  L193               SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-08-18 19:19:23,859 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 19:19:23,860 INFO  L93              Difference]: Finished difference Result 957 states and 1190 transitions.
[2020-08-18 19:19:23,860 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-08-18 19:19:23,861 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states. Word has length 108
[2020-08-18 19:19:23,861 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 19:19:23,869 INFO  L225             Difference]: With dead ends: 957
[2020-08-18 19:19:23,869 INFO  L226             Difference]: Without dead ends: 550
[2020-08-18 19:19:23,872 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462
[2020-08-18 19:19:23,874 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 550 states.
[2020-08-18 19:19:24,019 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 443.
[2020-08-18 19:19:24,019 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 443 states.
[2020-08-18 19:19:24,022 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 503 transitions.
[2020-08-18 19:19:24,022 INFO  L78                 Accepts]: Start accepts. Automaton has 443 states and 503 transitions. Word has length 108
[2020-08-18 19:19:24,025 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 19:19:24,025 INFO  L479      AbstractCegarLoop]: Abstraction has 443 states and 503 transitions.
[2020-08-18 19:19:24,025 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-08-18 19:19:24,025 INFO  L276                IsEmpty]: Start isEmpty. Operand 443 states and 503 transitions.
[2020-08-18 19:19:24,030 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 109
[2020-08-18 19:19:24,030 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 19:19:24,031 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 19:19:24,031 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2020-08-18 19:19:24,031 INFO  L427      AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 19:19:24,032 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 19:19:24,032 INFO  L82        PathProgramCache]: Analyzing trace with hash 1454561757, now seen corresponding path program 1 times
[2020-08-18 19:19:24,032 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 19:19:24,033 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537971795]
[2020-08-18 19:19:24,033 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 19:19:24,118 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:24,392 WARN  L193               SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-18 19:19:24,393 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 19:19:24,401 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:24,415 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 19:19:24,417 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:24,418 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 19:19:24,418 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:24,419 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 19:19:24,420 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:24,421 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 19:19:24,422 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:24,439 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2020-08-18 19:19:24,440 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:24,449 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34
[2020-08-18 19:19:24,450 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:24,459 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43
[2020-08-18 19:19:24,462 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:24,475 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 19:19:24,478 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:24,490 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 19:19:24,493 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:24,505 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 19:19:24,507 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:24,517 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-18 19:19:24,518 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:24,527 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16
[2020-08-18 19:19:24,529 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:24,532 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-18 19:19:24,533 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:24,535 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-18 19:19:24,536 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:24,537 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 19:19:24,538 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:24,542 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93
[2020-08-18 19:19:24,543 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:24,544 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-08-18 19:19:24,546 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:24,570 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2020-08-18 19:19:24,571 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537971795]
[2020-08-18 19:19:24,571 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 19:19:24,571 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-08-18 19:19:24,571 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941679409]
[2020-08-18 19:19:24,572 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-08-18 19:19:24,572 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 19:19:24,572 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-08-18 19:19:24,573 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2020-08-18 19:19:24,573 INFO  L87              Difference]: Start difference. First operand 443 states and 503 transitions. Second operand 8 states.
[2020-08-18 19:19:25,019 WARN  L193               SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-18 19:19:25,538 WARN  L193               SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-18 19:19:27,991 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 19:19:27,991 INFO  L93              Difference]: Finished difference Result 1296 states and 1667 transitions.
[2020-08-18 19:19:27,991 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. 
[2020-08-18 19:19:27,992 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 108
[2020-08-18 19:19:27,992 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 19:19:28,000 INFO  L225             Difference]: With dead ends: 1296
[2020-08-18 19:19:28,001 INFO  L226             Difference]: Without dead ends: 881
[2020-08-18 19:19:28,003 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506
[2020-08-18 19:19:28,004 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 881 states.
[2020-08-18 19:19:28,138 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 749.
[2020-08-18 19:19:28,138 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 749 states.
[2020-08-18 19:19:28,142 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 881 transitions.
[2020-08-18 19:19:28,143 INFO  L78                 Accepts]: Start accepts. Automaton has 749 states and 881 transitions. Word has length 108
[2020-08-18 19:19:28,143 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 19:19:28,143 INFO  L479      AbstractCegarLoop]: Abstraction has 749 states and 881 transitions.
[2020-08-18 19:19:28,143 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-08-18 19:19:28,143 INFO  L276                IsEmpty]: Start isEmpty. Operand 749 states and 881 transitions.
[2020-08-18 19:19:28,145 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 113
[2020-08-18 19:19:28,145 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 19:19:28,146 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 19:19:28,146 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2020-08-18 19:19:28,146 INFO  L427      AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 19:19:28,146 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 19:19:28,146 INFO  L82        PathProgramCache]: Analyzing trace with hash 1438503063, now seen corresponding path program 1 times
[2020-08-18 19:19:28,147 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 19:19:28,147 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226657286]
[2020-08-18 19:19:28,147 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 19:19:28,174 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:28,443 WARN  L193               SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-18 19:19:28,444 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 19:19:28,447 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:28,456 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 19:19:28,457 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:28,458 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 19:19:28,459 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:28,460 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 19:19:28,461 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:28,473 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 19:19:28,474 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:28,487 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2020-08-18 19:19:28,488 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:28,503 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32
[2020-08-18 19:19:28,504 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:28,524 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2020-08-18 19:19:28,525 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:28,558 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47
[2020-08-18 19:19:28,561 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:28,592 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 19:19:28,599 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:28,607 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 19:19:28,619 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:28,637 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 19:19:28,639 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:28,640 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-18 19:19:28,641 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:28,643 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16
[2020-08-18 19:19:28,645 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:28,701 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-18 19:19:28,703 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:28,770 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-18 19:19:28,771 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:28,803 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 19:19:28,804 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:28,815 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97
[2020-08-18 19:19:28,816 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:28,817 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103
[2020-08-18 19:19:28,818 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:28,850 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-08-18 19:19:28,851 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226657286]
[2020-08-18 19:19:28,851 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-08-18 19:19:28,851 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18
[2020-08-18 19:19:28,852 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446437562]
[2020-08-18 19:19:28,852 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 18 states
[2020-08-18 19:19:28,853 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 19:19:28,853 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2020-08-18 19:19:28,853 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306
[2020-08-18 19:19:28,854 INFO  L87              Difference]: Start difference. First operand 749 states and 881 transitions. Second operand 18 states.
[2020-08-18 19:19:29,820 WARN  L193               SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-18 19:19:30,150 WARN  L193               SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 192
[2020-08-18 19:19:30,456 WARN  L193               SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 192
[2020-08-18 19:19:30,719 WARN  L193               SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 192
[2020-08-18 19:19:31,375 WARN  L193               SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-18 19:19:32,345 WARN  L193               SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-18 19:19:32,649 WARN  L193               SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-18 19:19:32,909 WARN  L193               SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-18 19:19:33,178 WARN  L193               SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-18 19:19:33,489 WARN  L193               SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-18 19:19:33,764 WARN  L193               SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-18 19:19:34,267 WARN  L193               SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191
[2020-08-18 19:19:34,784 WARN  L193               SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191
[2020-08-18 19:19:37,451 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 19:19:37,452 INFO  L93              Difference]: Finished difference Result 1572 states and 1938 transitions.
[2020-08-18 19:19:37,457 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. 
[2020-08-18 19:19:37,457 INFO  L78                 Accepts]: Start accepts. Automaton has 18 states. Word has length 112
[2020-08-18 19:19:37,458 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 19:19:37,463 INFO  L225             Difference]: With dead ends: 1572
[2020-08-18 19:19:37,463 INFO  L226             Difference]: Without dead ends: 851
[2020-08-18 19:19:37,466 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=503, Invalid=2149, Unknown=0, NotChecked=0, Total=2652
[2020-08-18 19:19:37,468 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 851 states.
[2020-08-18 19:19:37,578 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 728.
[2020-08-18 19:19:37,578 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 728 states.
[2020-08-18 19:19:37,581 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 846 transitions.
[2020-08-18 19:19:37,582 INFO  L78                 Accepts]: Start accepts. Automaton has 728 states and 846 transitions. Word has length 112
[2020-08-18 19:19:37,582 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 19:19:37,582 INFO  L479      AbstractCegarLoop]: Abstraction has 728 states and 846 transitions.
[2020-08-18 19:19:37,583 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 18 states.
[2020-08-18 19:19:37,583 INFO  L276                IsEmpty]: Start isEmpty. Operand 728 states and 846 transitions.
[2020-08-18 19:19:37,586 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 182
[2020-08-18 19:19:37,586 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 19:19:37,587 INFO  L422         BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 19:19:37,587 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2020-08-18 19:19:37,587 INFO  L427      AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 19:19:37,587 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 19:19:37,588 INFO  L82        PathProgramCache]: Analyzing trace with hash -2045020006, now seen corresponding path program 1 times
[2020-08-18 19:19:37,588 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 19:19:37,588 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436949385]
[2020-08-18 19:19:37,588 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 19:19:37,621 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:37,912 WARN  L193               SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-18 19:19:37,913 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 19:19:37,918 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:37,930 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 19:19:37,930 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:37,931 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 19:19:37,932 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:37,933 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 19:19:37,933 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:37,948 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 19:19:37,949 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:37,960 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2020-08-18 19:19:37,960 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:37,972 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32
[2020-08-18 19:19:37,972 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:37,991 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2020-08-18 19:19:37,993 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:38,016 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 19:19:38,017 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:38,021 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 19:19:38,022 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:38,033 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 19:19:38,034 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:38,038 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 19:19:38,039 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:38,047 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-18 19:19:38,048 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:38,049 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16
[2020-08-18 19:19:38,050 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:38,053 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-18 19:19:38,054 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:38,055 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-18 19:19:38,056 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:38,057 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 19:19:38,058 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:38,063 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50
[2020-08-18 19:19:38,065 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:38,066 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-18 19:19:38,067 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:38,084 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109
[2020-08-18 19:19:38,085 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:38,098 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117
[2020-08-18 19:19:38,099 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:38,100 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122
[2020-08-18 19:19:38,102 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:38,163 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 19:19:38,164 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:38,200 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-18 19:19:38,201 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:38,218 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13
[2020-08-18 19:19:38,221 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:38,225 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 19:19:38,226 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:38,227 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-18 19:19:38,228 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:38,229 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2020-08-18 19:19:38,230 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:38,230 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 19:19:38,231 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:38,233 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166
[2020-08-18 19:19:38,233 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:38,234 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172
[2020-08-18 19:19:38,235 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 19:19:38,312 INFO  L134       CoverageAnalysis]: Checked inductivity of 52 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked.
[2020-08-18 19:19:38,313 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436949385]
[2020-08-18 19:19:38,313 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-08-18 19:19:38,313 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19
[2020-08-18 19:19:38,313 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768233849]
[2020-08-18 19:19:38,314 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 19 states
[2020-08-18 19:19:38,314 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 19:19:38,314 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2020-08-18 19:19:38,315 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342
[2020-08-18 19:19:38,315 INFO  L87              Difference]: Start difference. First operand 728 states and 846 transitions. Second operand 19 states.
[2020-08-18 19:19:38,870 WARN  L193               SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-18 19:19:39,221 WARN  L193               SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192
[2020-08-18 19:19:39,474 WARN  L193               SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192
[2020-08-18 19:19:39,717 WARN  L193               SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192
[2020-08-18 19:19:40,342 WARN  L193               SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-18 19:19:41,346 WARN  L193               SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-18 19:19:41,662 WARN  L193               SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-18 19:19:41,934 WARN  L193               SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-18 19:19:42,203 WARN  L193               SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-18 19:19:42,521 WARN  L193               SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-18 19:19:42,784 WARN  L193               SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-18 19:19:44,011 WARN  L193               SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-18 19:19:44,275 WARN  L193               SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-18 19:19:44,563 WARN  L193               SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-18 19:19:44,801 WARN  L193               SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-18 19:19:45,893 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 19:19:45,893 INFO  L93              Difference]: Finished difference Result 1341 states and 1663 transitions.
[2020-08-18 19:19:45,894 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. 
[2020-08-18 19:19:45,894 INFO  L78                 Accepts]: Start accepts. Automaton has 19 states. Word has length 181
[2020-08-18 19:19:45,894 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 19:19:45,895 INFO  L225             Difference]: With dead ends: 1341
[2020-08-18 19:19:45,896 INFO  L226             Difference]: Without dead ends: 0
[2020-08-18 19:19:45,900 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=539, Invalid=2541, Unknown=0, NotChecked=0, Total=3080
[2020-08-18 19:19:45,900 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-08-18 19:19:45,901 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-08-18 19:19:45,901 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-08-18 19:19:45,901 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-08-18 19:19:45,901 INFO  L78                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 181
[2020-08-18 19:19:45,902 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 19:19:45,902 INFO  L479      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-08-18 19:19:45,902 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 19 states.
[2020-08-18 19:19:45,902 INFO  L276                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-08-18 19:19:45,902 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2020-08-18 19:19:45,902 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2020-08-18 19:19:45,905 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-08-18 19:19:48,327 WARN  L193               SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 310 DAG size of output: 247
[2020-08-18 19:19:48,712 WARN  L193               SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 207
[2020-08-18 19:19:49,124 WARN  L193               SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 207
[2020-08-18 19:19:50,652 WARN  L193               SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 326 DAG size of output: 265
[2020-08-18 19:19:51,273 WARN  L193               SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 254
[2020-08-18 19:19:52,084 WARN  L193               SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 212
[2020-08-18 19:19:53,508 WARN  L193               SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 254