/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product58.cil.c


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


This is Ultimate 0.1.25-177f698
[2020-08-21 18:49:56,134 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-08-21 18:49:56,137 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-08-21 18:49:56,184 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-08-21 18:49:56,184 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-08-21 18:49:56,195 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-08-21 18:49:56,198 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-08-21 18:49:56,202 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-08-21 18:49:56,204 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-08-21 18:49:56,208 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-08-21 18:49:56,209 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-08-21 18:49:56,210 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-08-21 18:49:56,210 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-08-21 18:49:56,213 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-08-21 18:49:56,216 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-08-21 18:49:56,217 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-08-21 18:49:56,219 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-08-21 18:49:56,220 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-08-21 18:49:56,222 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-08-21 18:49:56,231 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-08-21 18:49:56,233 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-08-21 18:49:56,234 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-08-21 18:49:56,235 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-08-21 18:49:56,236 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-08-21 18:49:56,247 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-08-21 18:49:56,247 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-08-21 18:49:56,247 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-08-21 18:49:56,248 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-08-21 18:49:56,249 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-08-21 18:49:56,252 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-08-21 18:49:56,252 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-08-21 18:49:56,253 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-08-21 18:49:56,254 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-08-21 18:49:56,254 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-08-21 18:49:56,256 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-08-21 18:49:56,256 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-08-21 18:49:56,256 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-08-21 18:49:56,257 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-08-21 18:49:56,257 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-08-21 18:49:56,258 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-08-21 18:49:56,259 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-08-21 18:49:56,260 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-08-21 18:49:56,303 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-08-21 18:49:56,303 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-08-21 18:49:56,305 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-08-21 18:49:56,305 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-08-21 18:49:56,305 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-08-21 18:49:56,306 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-08-21 18:49:56,306 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-08-21 18:49:56,306 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-08-21 18:49:56,307 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-08-21 18:49:56,307 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-08-21 18:49:56,308 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-08-21 18:49:56,308 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-08-21 18:49:56,308 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-08-21 18:49:56,309 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-08-21 18:49:56,309 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-08-21 18:49:56,309 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-08-21 18:49:56,309 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-08-21 18:49:56,310 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-08-21 18:49:56,310 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-08-21 18:49:56,310 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-08-21 18:49:56,310 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-08-21 18:49:56,310 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-21 18:49:56,311 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-08-21 18:49:56,311 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-08-21 18:49:56,311 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-08-21 18:49:56,311 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-08-21 18:49:56,311 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-08-21 18:49:56,312 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-08-21 18:49:56,312 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-08-21 18:49:56,312 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true;
[2020-08-21 18:49:56,601 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-08-21 18:49:56,613 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-08-21 18:49:56,617 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-08-21 18:49:56,618 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-08-21 18:49:56,619 INFO  L275        PluginConnector]: CDTParser initialized
[2020-08-21 18:49:56,619 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product58.cil.c
[2020-08-21 18:49:56,679 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06b4986c5/4eab529abd2f42cbbc7a6f06102ef3f2/FLAG13bf4de57
[2020-08-21 18:49:57,201 INFO  L306              CDTParser]: Found 1 translation units.
[2020-08-21 18:49:57,201 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product58.cil.c
[2020-08-21 18:49:57,215 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06b4986c5/4eab529abd2f42cbbc7a6f06102ef3f2/FLAG13bf4de57
[2020-08-21 18:49:57,536 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06b4986c5/4eab529abd2f42cbbc7a6f06102ef3f2
[2020-08-21 18:49:57,543 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-08-21 18:49:57,545 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-08-21 18:49:57,546 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-08-21 18:49:57,546 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-08-21 18:49:57,549 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-08-21 18:49:57,550 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:49:57" (1/1) ...
[2020-08-21 18:49:57,553 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a0cc214 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:49:57, skipping insertion in model container
[2020-08-21 18:49:57,553 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:49:57" (1/1) ...
[2020-08-21 18:49:57,561 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-08-21 18:49:57,628 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-08-21 18:49:58,037 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-21 18:49:58,052 INFO  L203         MainTranslator]: Completed pre-run
[2020-08-21 18:49:58,168 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-21 18:49:58,205 INFO  L208         MainTranslator]: Completed translation
[2020-08-21 18:49:58,205 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:49:58 WrapperNode
[2020-08-21 18:49:58,205 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-08-21 18:49:58,206 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-08-21 18:49:58,206 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-08-21 18:49:58,206 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-08-21 18:49:58,220 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:49:58" (1/1) ...
[2020-08-21 18:49:58,220 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:49:58" (1/1) ...
[2020-08-21 18:49:58,238 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:49:58" (1/1) ...
[2020-08-21 18:49:58,239 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:49:58" (1/1) ...
[2020-08-21 18:49:58,296 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:49:58" (1/1) ...
[2020-08-21 18:49:58,306 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:49:58" (1/1) ...
[2020-08-21 18:49:58,312 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:49:58" (1/1) ...
[2020-08-21 18:49:58,319 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-08-21 18:49:58,320 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-08-21 18:49:58,320 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-08-21 18:49:58,320 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-08-21 18:49:58,321 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:49:58" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-21 18:49:58,402 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-08-21 18:49:58,402 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-08-21 18:49:58,402 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-08-21 18:49:58,403 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-08-21 18:49:58,403 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-08-21 18:49:58,403 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-08-21 18:49:58,403 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-08-21 18:49:58,403 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-08-21 18:49:58,403 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-08-21 18:49:58,405 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1
[2020-08-21 18:49:58,405 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-08-21 18:49:58,405 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-08-21 18:49:58,405 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-08-21 18:49:58,406 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-08-21 18:49:58,406 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-08-21 18:49:58,407 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-08-21 18:49:58,407 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-08-21 18:49:58,407 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry
[2020-08-21 18:49:58,407 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry
[2020-08-21 18:49:58,408 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-08-21 18:49:58,408 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-08-21 18:49:58,408 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-08-21 18:49:58,408 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-08-21 18:49:58,408 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-08-21 18:49:58,408 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-08-21 18:49:58,409 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-08-21 18:49:58,410 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-08-21 18:49:58,410 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-08-21 18:49:58,410 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-08-21 18:49:58,410 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base
[2020-08-21 18:49:58,411 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor
[2020-08-21 18:49:58,411 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-08-21 18:49:58,411 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor
[2020-08-21 18:49:58,411 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-08-21 18:49:58,411 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-08-21 18:49:58,411 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-08-21 18:49:58,412 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-08-21 18:49:58,412 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-08-21 18:49:58,412 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterLevel
[2020-08-21 18:49:58,412 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterLevel
[2020-08-21 18:49:58,412 INFO  L138     BoogieDeclarations]: Found implementation of procedure startSystem
[2020-08-21 18:49:58,412 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-08-21 18:49:58,413 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-08-21 18:49:58,413 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-08-21 18:49:58,413 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-08-21 18:49:58,413 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-08-21 18:49:58,413 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-08-21 18:49:58,413 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-08-21 18:49:58,413 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-08-21 18:49:58,414 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-08-21 18:49:58,414 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-08-21 18:49:58,414 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-08-21 18:49:58,414 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-08-21 18:49:58,414 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-08-21 18:49:58,415 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-08-21 18:49:58,415 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-08-21 18:49:58,415 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-08-21 18:49:58,415 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-08-21 18:49:58,415 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-08-21 18:49:58,416 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-08-21 18:49:58,416 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-08-21 18:49:58,416 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-08-21 18:49:58,416 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-08-21 18:49:58,416 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-08-21 18:49:58,416 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-08-21 18:49:58,416 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1
[2020-08-21 18:49:58,417 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-08-21 18:49:58,417 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-08-21 18:49:58,417 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-08-21 18:49:58,417 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-08-21 18:49:58,417 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-08-21 18:49:58,418 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry
[2020-08-21 18:49:58,419 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry
[2020-08-21 18:49:58,420 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-08-21 18:49:58,420 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-08-21 18:49:58,421 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-08-21 18:49:58,421 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-08-21 18:49:58,421 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-08-21 18:49:58,422 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-08-21 18:49:58,422 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-08-21 18:49:58,422 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-08-21 18:49:58,423 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-08-21 18:49:58,423 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-08-21 18:49:58,423 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-08-21 18:49:58,424 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-08-21 18:49:58,424 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-08-21 18:49:58,424 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-08-21 18:49:58,424 INFO  L130     BoogieDeclarations]: Found specification of procedure startSystem
[2020-08-21 18:49:58,424 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-08-21 18:49:58,425 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base
[2020-08-21 18:49:58,425 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterLevel
[2020-08-21 18:49:58,425 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor
[2020-08-21 18:49:58,425 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterLevel
[2020-08-21 18:49:58,425 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor
[2020-08-21 18:49:58,425 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-08-21 18:49:58,425 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-08-21 18:49:58,426 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-08-21 18:49:58,426 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-08-21 18:49:59,601 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-08-21 18:49:59,602 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-08-21 18:49:59,607 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:49:59 BoogieIcfgContainer
[2020-08-21 18:49:59,607 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-08-21 18:49:59,609 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-08-21 18:49:59,609 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-08-21 18:49:59,612 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-08-21 18:49:59,613 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:49:57" (1/3) ...
[2020-08-21 18:49:59,614 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b567acc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:49:59, skipping insertion in model container
[2020-08-21 18:49:59,614 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:49:58" (2/3) ...
[2020-08-21 18:49:59,614 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b567acc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:49:59, skipping insertion in model container
[2020-08-21 18:49:59,614 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:49:59" (3/3) ...
[2020-08-21 18:49:59,616 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec4_product58.cil.c
[2020-08-21 18:49:59,627 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-08-21 18:49:59,635 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-08-21 18:49:59,649 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-08-21 18:49:59,675 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-08-21 18:49:59,676 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-08-21 18:49:59,676 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-08-21 18:49:59,676 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-08-21 18:49:59,676 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-08-21 18:49:59,677 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-08-21 18:49:59,677 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-08-21 18:49:59,677 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-08-21 18:49:59,700 INFO  L276                IsEmpty]: Start isEmpty. Operand 190 states.
[2020-08-21 18:49:59,713 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2020-08-21 18:49:59,713 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 18:49:59,714 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]
[2020-08-21 18:49:59,715 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 18:49:59,721 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 18:49:59,721 INFO  L82        PathProgramCache]: Analyzing trace with hash -298144076, now seen corresponding path program 1 times
[2020-08-21 18:49:59,730 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 18:49:59,730 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19626536]
[2020-08-21 18:49:59,731 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 18:49:59,996 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:00,431 WARN  L193               SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-21 18:50:00,435 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 18:50:00,461 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:00,528 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 18:50:00,529 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:00,531 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 18:50:00,532 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:00,534 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 18:50:00,535 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:00,537 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 18:50:00,538 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:00,539 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32
[2020-08-21 18:50:00,540 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:00,542 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2020-08-21 18:50:00,543 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:00,557 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 18:50:00,558 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19626536]
[2020-08-21 18:50:00,560 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 18:50:00,560 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-08-21 18:50:00,561 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978250965]
[2020-08-21 18:50:00,567 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-08-21 18:50:00,567 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 18:50:00,582 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-08-21 18:50:00,583 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-08-21 18:50:00,585 INFO  L87              Difference]: Start difference. First operand 190 states. Second operand 3 states.
[2020-08-21 18:50:01,839 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 18:50:01,840 INFO  L93              Difference]: Finished difference Result 338 states and 432 transitions.
[2020-08-21 18:50:01,840 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-08-21 18:50:01,842 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 46
[2020-08-21 18:50:01,843 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 18:50:01,858 INFO  L225             Difference]: With dead ends: 338
[2020-08-21 18:50:01,858 INFO  L226             Difference]: Without dead ends: 182
[2020-08-21 18:50:01,863 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-08-21 18:50:01,883 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 182 states.
[2020-08-21 18:50:01,970 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 147.
[2020-08-21 18:50:01,972 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 147 states.
[2020-08-21 18:50:01,974 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 170 transitions.
[2020-08-21 18:50:01,976 INFO  L78                 Accepts]: Start accepts. Automaton has 147 states and 170 transitions. Word has length 46
[2020-08-21 18:50:01,976 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 18:50:01,976 INFO  L479      AbstractCegarLoop]: Abstraction has 147 states and 170 transitions.
[2020-08-21 18:50:01,976 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-08-21 18:50:01,977 INFO  L276                IsEmpty]: Start isEmpty. Operand 147 states and 170 transitions.
[2020-08-21 18:50:01,980 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2020-08-21 18:50:01,980 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 18:50:01,980 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]
[2020-08-21 18:50:01,980 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-08-21 18:50:01,981 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 18:50:01,981 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 18:50:01,981 INFO  L82        PathProgramCache]: Analyzing trace with hash -491113124, now seen corresponding path program 1 times
[2020-08-21 18:50:01,981 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 18:50:01,982 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304596606]
[2020-08-21 18:50:01,982 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 18:50:02,026 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:02,295 WARN  L193               SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-21 18:50:02,296 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 18:50:02,302 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:02,323 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 18:50:02,324 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:02,325 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 18:50:02,325 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:02,326 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 18:50:02,327 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:02,329 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 18:50:02,329 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:02,330 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33
[2020-08-21 18:50:02,331 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:02,332 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39
[2020-08-21 18:50:02,333 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:02,342 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 18:50:02,343 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304596606]
[2020-08-21 18:50:02,344 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 18:50:02,344 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-08-21 18:50:02,344 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102414214]
[2020-08-21 18:50:02,346 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-08-21 18:50:02,347 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 18:50:02,347 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-08-21 18:50:02,347 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-08-21 18:50:02,347 INFO  L87              Difference]: Start difference. First operand 147 states and 170 transitions. Second operand 4 states.
[2020-08-21 18:50:02,797 WARN  L193               SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-21 18:50:03,717 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 18:50:03,718 INFO  L93              Difference]: Finished difference Result 267 states and 319 transitions.
[2020-08-21 18:50:03,718 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-08-21 18:50:03,719 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 47
[2020-08-21 18:50:03,719 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 18:50:03,722 INFO  L225             Difference]: With dead ends: 267
[2020-08-21 18:50:03,722 INFO  L226             Difference]: Without dead ends: 166
[2020-08-21 18:50:03,724 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-08-21 18:50:03,724 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 166 states.
[2020-08-21 18:50:03,763 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138.
[2020-08-21 18:50:03,763 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 138 states.
[2020-08-21 18:50:03,765 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 158 transitions.
[2020-08-21 18:50:03,765 INFO  L78                 Accepts]: Start accepts. Automaton has 138 states and 158 transitions. Word has length 47
[2020-08-21 18:50:03,766 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 18:50:03,766 INFO  L479      AbstractCegarLoop]: Abstraction has 138 states and 158 transitions.
[2020-08-21 18:50:03,766 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-08-21 18:50:03,766 INFO  L276                IsEmpty]: Start isEmpty. Operand 138 states and 158 transitions.
[2020-08-21 18:50:03,768 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2020-08-21 18:50:03,768 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 18:50:03,768 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-21 18:50:03,769 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-08-21 18:50:03,769 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 18:50:03,769 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 18:50:03,769 INFO  L82        PathProgramCache]: Analyzing trace with hash 1388977157, now seen corresponding path program 1 times
[2020-08-21 18:50:03,770 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 18:50:03,770 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714088750]
[2020-08-21 18:50:03,770 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 18:50:03,805 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:04,128 WARN  L193               SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-21 18:50:04,131 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 18:50:04,150 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:04,188 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 18:50:04,190 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:04,191 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 18:50:04,192 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:04,193 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 18:50:04,194 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:04,213 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 18:50:04,214 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:04,216 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2020-08-21 18:50:04,217 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:04,218 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44
[2020-08-21 18:50:04,219 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:04,226 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 18:50:04,227 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714088750]
[2020-08-21 18:50:04,227 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 18:50:04,227 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-08-21 18:50:04,228 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615370058]
[2020-08-21 18:50:04,228 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-08-21 18:50:04,228 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 18:50:04,229 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-08-21 18:50:04,229 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2020-08-21 18:50:04,229 INFO  L87              Difference]: Start difference. First operand 138 states and 158 transitions. Second operand 8 states.
[2020-08-21 18:50:04,599 WARN  L193               SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-21 18:50:04,919 WARN  L193               SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 18:50:05,180 WARN  L193               SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 18:50:05,461 WARN  L193               SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 18:50:06,893 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 18:50:06,894 INFO  L93              Difference]: Finished difference Result 280 states and 337 transitions.
[2020-08-21 18:50:06,895 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-08-21 18:50:06,895 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 52
[2020-08-21 18:50:06,896 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 18:50:06,898 INFO  L225             Difference]: With dead ends: 280
[2020-08-21 18:50:06,898 INFO  L226             Difference]: Without dead ends: 166
[2020-08-21 18:50:06,899 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-08-21 18:50:06,900 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 166 states.
[2020-08-21 18:50:06,937 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138.
[2020-08-21 18:50:06,938 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 138 states.
[2020-08-21 18:50:06,939 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 157 transitions.
[2020-08-21 18:50:06,939 INFO  L78                 Accepts]: Start accepts. Automaton has 138 states and 157 transitions. Word has length 52
[2020-08-21 18:50:06,940 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 18:50:06,940 INFO  L479      AbstractCegarLoop]: Abstraction has 138 states and 157 transitions.
[2020-08-21 18:50:06,940 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-08-21 18:50:06,940 INFO  L276                IsEmpty]: Start isEmpty. Operand 138 states and 157 transitions.
[2020-08-21 18:50:06,941 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 66
[2020-08-21 18:50:06,942 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 18:50:06,942 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-21 18:50:06,942 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-08-21 18:50:06,942 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 18:50:06,943 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 18:50:06,943 INFO  L82        PathProgramCache]: Analyzing trace with hash 105794737, now seen corresponding path program 1 times
[2020-08-21 18:50:06,943 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 18:50:06,943 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888797485]
[2020-08-21 18:50:06,944 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 18:50:06,971 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:07,246 WARN  L193               SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-21 18:50:07,248 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 18:50:07,259 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:07,275 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 18:50:07,276 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:07,277 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 18:50:07,278 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:07,279 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 18:50:07,280 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:07,281 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 18:50:07,282 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:07,297 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2020-08-21 18:50:07,298 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:07,301 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:50:07,302 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:07,313 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:50:07,314 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:07,315 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2020-08-21 18:50:07,316 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:07,317 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57
[2020-08-21 18:50:07,318 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:07,327 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 18:50:07,328 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888797485]
[2020-08-21 18:50:07,328 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 18:50:07,328 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-08-21 18:50:07,328 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493153816]
[2020-08-21 18:50:07,329 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-08-21 18:50:07,329 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 18:50:07,329 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-08-21 18:50:07,330 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2020-08-21 18:50:07,330 INFO  L87              Difference]: Start difference. First operand 138 states and 157 transitions. Second operand 6 states.
[2020-08-21 18:50:07,616 WARN  L193               SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-21 18:50:08,864 WARN  L193               SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-21 18:50:09,542 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 18:50:09,542 INFO  L93              Difference]: Finished difference Result 377 states and 459 transitions.
[2020-08-21 18:50:09,543 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-08-21 18:50:09,543 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 65
[2020-08-21 18:50:09,543 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 18:50:09,546 INFO  L225             Difference]: With dead ends: 377
[2020-08-21 18:50:09,547 INFO  L226             Difference]: Without dead ends: 263
[2020-08-21 18:50:09,548 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110
[2020-08-21 18:50:09,549 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 263 states.
[2020-08-21 18:50:09,597 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 220.
[2020-08-21 18:50:09,598 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 220 states.
[2020-08-21 18:50:09,599 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 248 transitions.
[2020-08-21 18:50:09,599 INFO  L78                 Accepts]: Start accepts. Automaton has 220 states and 248 transitions. Word has length 65
[2020-08-21 18:50:09,600 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 18:50:09,600 INFO  L479      AbstractCegarLoop]: Abstraction has 220 states and 248 transitions.
[2020-08-21 18:50:09,600 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-08-21 18:50:09,600 INFO  L276                IsEmpty]: Start isEmpty. Operand 220 states and 248 transitions.
[2020-08-21 18:50:09,601 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 80
[2020-08-21 18:50:09,601 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 18:50:09,602 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]
[2020-08-21 18:50:09,602 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-08-21 18:50:09,602 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 18:50:09,602 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 18:50:09,603 INFO  L82        PathProgramCache]: Analyzing trace with hash -830596407, now seen corresponding path program 1 times
[2020-08-21 18:50:09,603 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 18:50:09,603 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81701594]
[2020-08-21 18:50:09,603 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 18:50:09,630 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:09,877 WARN  L193               SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-21 18:50:09,878 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 18:50:09,884 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:09,895 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 18:50:09,896 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:09,896 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 18:50:09,897 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:09,898 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 18:50:09,898 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:09,931 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 18:50:09,932 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:09,940 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2020-08-21 18:50:09,943 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:09,946 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:50:09,949 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:09,952 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:50:09,953 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:09,975 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 18:50:09,976 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:09,988 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16
[2020-08-21 18:50:09,989 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:09,991 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65
[2020-08-21 18:50:09,991 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:09,992 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71
[2020-08-21 18:50:09,993 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:10,002 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 18:50:10,003 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81701594]
[2020-08-21 18:50:10,003 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 18:50:10,003 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2020-08-21 18:50:10,004 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699235686]
[2020-08-21 18:50:10,004 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-08-21 18:50:10,004 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 18:50:10,005 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-08-21 18:50:10,005 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90
[2020-08-21 18:50:10,005 INFO  L87              Difference]: Start difference. First operand 220 states and 248 transitions. Second operand 10 states.
[2020-08-21 18:50:10,400 WARN  L193               SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-21 18:50:10,666 WARN  L193               SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-21 18:50:10,886 WARN  L193               SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-21 18:50:11,474 WARN  L193               SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-21 18:50:11,719 WARN  L193               SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-21 18:50:11,974 WARN  L193               SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-21 18:50:13,057 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 18:50:13,057 INFO  L93              Difference]: Finished difference Result 460 states and 553 transitions.
[2020-08-21 18:50:13,059 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-08-21 18:50:13,059 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 79
[2020-08-21 18:50:13,060 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 18:50:13,062 INFO  L225             Difference]: With dead ends: 460
[2020-08-21 18:50:13,062 INFO  L226             Difference]: Without dead ends: 264
[2020-08-21 18:50:13,064 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240
[2020-08-21 18:50:13,065 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 264 states.
[2020-08-21 18:50:13,113 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 224.
[2020-08-21 18:50:13,113 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 224 states.
[2020-08-21 18:50:13,115 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 252 transitions.
[2020-08-21 18:50:13,115 INFO  L78                 Accepts]: Start accepts. Automaton has 224 states and 252 transitions. Word has length 79
[2020-08-21 18:50:13,115 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 18:50:13,116 INFO  L479      AbstractCegarLoop]: Abstraction has 224 states and 252 transitions.
[2020-08-21 18:50:13,116 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-08-21 18:50:13,116 INFO  L276                IsEmpty]: Start isEmpty. Operand 224 states and 252 transitions.
[2020-08-21 18:50:13,117 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 80
[2020-08-21 18:50:13,117 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 18:50:13,117 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]
[2020-08-21 18:50:13,118 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-08-21 18:50:13,118 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 18:50:13,118 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 18:50:13,118 INFO  L82        PathProgramCache]: Analyzing trace with hash 2078167495, now seen corresponding path program 1 times
[2020-08-21 18:50:13,118 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 18:50:13,119 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704744473]
[2020-08-21 18:50:13,119 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 18:50:13,142 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:13,429 WARN  L193               SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-21 18:50:13,430 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 18:50:13,441 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:13,453 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 18:50:13,454 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:13,455 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 18:50:13,456 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:13,457 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 18:50:13,458 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:13,488 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 18:50:13,489 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:13,502 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2020-08-21 18:50:13,505 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:13,508 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:50:13,510 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:13,513 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:50:13,514 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:13,515 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 18:50:13,516 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:13,517 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16
[2020-08-21 18:50:13,518 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:13,520 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65
[2020-08-21 18:50:13,521 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:13,535 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71
[2020-08-21 18:50:13,536 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:13,548 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 18:50:13,549 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [704744473]
[2020-08-21 18:50:13,550 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 18:50:13,550 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12
[2020-08-21 18:50:13,550 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374381824]
[2020-08-21 18:50:13,551 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-08-21 18:50:13,551 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 18:50:13,551 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-08-21 18:50:13,551 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132
[2020-08-21 18:50:13,552 INFO  L87              Difference]: Start difference. First operand 224 states and 252 transitions. Second operand 12 states.
[2020-08-21 18:50:13,929 WARN  L193               SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-21 18:50:14,228 WARN  L193               SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 18:50:14,492 WARN  L193               SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 18:50:14,737 WARN  L193               SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 18:50:15,269 WARN  L193               SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-21 18:50:16,157 WARN  L193               SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 18:50:16,455 WARN  L193               SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-08-21 18:50:16,702 WARN  L193               SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-08-21 18:50:16,988 WARN  L193               SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-21 18:50:17,291 WARN  L193               SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-08-21 18:50:17,541 WARN  L193               SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-08-21 18:50:18,871 WARN  L193               SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-21 18:50:19,260 WARN  L193               SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 18:50:19,908 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 18:50:19,908 INFO  L93              Difference]: Finished difference Result 789 states and 997 transitions.
[2020-08-21 18:50:19,909 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. 
[2020-08-21 18:50:19,909 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states. Word has length 79
[2020-08-21 18:50:19,909 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 18:50:19,914 INFO  L225             Difference]: With dead ends: 789
[2020-08-21 18:50:19,915 INFO  L226             Difference]: Without dead ends: 589
[2020-08-21 18:50:19,916 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702
[2020-08-21 18:50:19,918 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 589 states.
[2020-08-21 18:50:20,039 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 527.
[2020-08-21 18:50:20,039 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 527 states.
[2020-08-21 18:50:20,042 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 609 transitions.
[2020-08-21 18:50:20,043 INFO  L78                 Accepts]: Start accepts. Automaton has 527 states and 609 transitions. Word has length 79
[2020-08-21 18:50:20,043 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 18:50:20,043 INFO  L479      AbstractCegarLoop]: Abstraction has 527 states and 609 transitions.
[2020-08-21 18:50:20,044 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-08-21 18:50:20,044 INFO  L276                IsEmpty]: Start isEmpty. Operand 527 states and 609 transitions.
[2020-08-21 18:50:20,047 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 155
[2020-08-21 18:50:20,047 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 18:50:20,048 INFO  L422         BasicCegarLoop]: trace histogram [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, 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]
[2020-08-21 18:50:20,048 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-08-21 18:50:20,048 INFO  L427      AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 18:50:20,048 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 18:50:20,049 INFO  L82        PathProgramCache]: Analyzing trace with hash -1201141545, now seen corresponding path program 1 times
[2020-08-21 18:50:20,049 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 18:50:20,049 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994154982]
[2020-08-21 18:50:20,049 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 18:50:20,076 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:20,320 WARN  L193               SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-21 18:50:20,321 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 18:50:20,339 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:20,352 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 18:50:20,353 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:20,354 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 18:50:20,355 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:20,361 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 18:50:20,362 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:20,367 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 18:50:20,368 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:20,375 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28
[2020-08-21 18:50:20,376 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:20,402 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-21 18:50:20,406 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:20,424 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:50:20,428 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:20,434 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:50:20,437 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:20,474 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:50:20,477 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:20,523 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 18:50:20,523 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:20,525 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16
[2020-08-21 18:50:20,526 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:20,528 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 18:50:20,528 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:20,530 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 18:50:20,530 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:20,531 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 18:50:20,532 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:20,536 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2020-08-21 18:50:20,538 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:20,539 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 18:50:20,540 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:20,545 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-08-21 18:50:20,546 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:20,547 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111
[2020-08-21 18:50:20,550 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:20,553 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:50:20,555 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:20,557 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:50:20,558 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:20,560 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 18:50:20,561 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:20,562 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16
[2020-08-21 18:50:20,562 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:20,565 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140
[2020-08-21 18:50:20,565 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:20,566 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146
[2020-08-21 18:50:20,567 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:20,628 INFO  L134       CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2020-08-21 18:50:20,628 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994154982]
[2020-08-21 18:50:20,629 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-08-21 18:50:20,629 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13
[2020-08-21 18:50:20,629 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223256475]
[2020-08-21 18:50:20,630 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-08-21 18:50:20,630 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 18:50:20,630 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-08-21 18:50:20,631 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156
[2020-08-21 18:50:20,631 INFO  L87              Difference]: Start difference. First operand 527 states and 609 transitions. Second operand 13 states.
[2020-08-21 18:50:21,146 WARN  L193               SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-21 18:50:21,734 WARN  L193               SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-21 18:50:22,280 WARN  L193               SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-08-21 18:50:22,553 WARN  L193               SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 193
[2020-08-21 18:50:22,857 WARN  L193               SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-21 18:50:23,109 WARN  L193               SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-21 18:50:23,362 WARN  L193               SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-08-21 18:50:23,633 WARN  L193               SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 193
[2020-08-21 18:50:23,912 WARN  L193               SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-21 18:50:24,162 WARN  L193               SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-21 18:50:25,723 WARN  L193               SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 18:50:25,956 WARN  L193               SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-21 18:50:26,184 WARN  L193               SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-21 18:50:26,400 WARN  L193               SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-21 18:50:26,951 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 18:50:26,951 INFO  L93              Difference]: Finished difference Result 937 states and 1177 transitions.
[2020-08-21 18:50:26,952 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. 
[2020-08-21 18:50:26,952 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 154
[2020-08-21 18:50:26,953 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 18:50:26,956 INFO  L225             Difference]: With dead ends: 937
[2020-08-21 18:50:26,957 INFO  L226             Difference]: Without dead ends: 434
[2020-08-21 18:50:26,964 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=205, Invalid=851, Unknown=0, NotChecked=0, Total=1056
[2020-08-21 18:50:26,965 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 434 states.
[2020-08-21 18:50:27,058 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 380.
[2020-08-21 18:50:27,058 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 380 states.
[2020-08-21 18:50:27,061 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 443 transitions.
[2020-08-21 18:50:27,064 INFO  L78                 Accepts]: Start accepts. Automaton has 380 states and 443 transitions. Word has length 154
[2020-08-21 18:50:27,065 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 18:50:27,065 INFO  L479      AbstractCegarLoop]: Abstraction has 380 states and 443 transitions.
[2020-08-21 18:50:27,065 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-08-21 18:50:27,065 INFO  L276                IsEmpty]: Start isEmpty. Operand 380 states and 443 transitions.
[2020-08-21 18:50:27,070 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 150
[2020-08-21 18:50:27,071 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 18:50:27,071 INFO  L422         BasicCegarLoop]: trace histogram [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]
[2020-08-21 18:50:27,071 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2020-08-21 18:50:27,071 INFO  L427      AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 18:50:27,071 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 18:50:27,072 INFO  L82        PathProgramCache]: Analyzing trace with hash 1319690960, now seen corresponding path program 1 times
[2020-08-21 18:50:27,072 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 18:50:27,072 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704227990]
[2020-08-21 18:50:27,072 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 18:50:27,123 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:27,377 WARN  L193               SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-21 18:50:27,378 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 18:50:27,382 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:27,399 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 18:50:27,399 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:27,400 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 18:50:27,400 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:27,401 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 18:50:27,401 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:27,402 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 18:50:27,402 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:27,408 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28
[2020-08-21 18:50:27,409 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:27,419 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-21 18:50:27,421 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:27,433 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:50:27,434 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:27,438 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:50:27,439 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:27,442 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:50:27,443 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:27,444 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 18:50:27,444 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:27,445 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16
[2020-08-21 18:50:27,452 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:27,454 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 18:50:27,454 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:27,455 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 18:50:27,456 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:27,457 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 18:50:27,457 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:27,462 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2020-08-21 18:50:27,463 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:27,464 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 18:50:27,465 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:27,467 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106
[2020-08-21 18:50:27,468 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:27,469 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111
[2020-08-21 18:50:27,471 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:27,493 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:50:27,495 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:27,519 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 18:50:27,520 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:27,521 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2020-08-21 18:50:27,522 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:27,523 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135
[2020-08-21 18:50:27,524 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:27,524 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141
[2020-08-21 18:50:27,525 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:27,546 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked.
[2020-08-21 18:50:27,547 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [704227990]
[2020-08-21 18:50:27,547 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-08-21 18:50:27,547 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10
[2020-08-21 18:50:27,548 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493081658]
[2020-08-21 18:50:27,548 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-08-21 18:50:27,549 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 18:50:27,549 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-08-21 18:50:27,549 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90
[2020-08-21 18:50:27,549 INFO  L87              Difference]: Start difference. First operand 380 states and 443 transitions. Second operand 10 states.
[2020-08-21 18:50:29,039 WARN  L193               SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-21 18:50:29,272 WARN  L193               SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-21 18:50:29,500 WARN  L193               SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-21 18:50:29,721 WARN  L193               SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-21 18:50:30,119 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 18:50:30,119 INFO  L93              Difference]: Finished difference Result 704 states and 848 transitions.
[2020-08-21 18:50:30,124 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-08-21 18:50:30,124 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 149
[2020-08-21 18:50:30,125 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 18:50:30,128 INFO  L225             Difference]: With dead ends: 704
[2020-08-21 18:50:30,128 INFO  L226             Difference]: Without dead ends: 411
[2020-08-21 18:50:30,130 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182
[2020-08-21 18:50:30,130 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 411 states.
[2020-08-21 18:50:30,202 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 385.
[2020-08-21 18:50:30,202 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 385 states.
[2020-08-21 18:50:30,204 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 448 transitions.
[2020-08-21 18:50:30,205 INFO  L78                 Accepts]: Start accepts. Automaton has 385 states and 448 transitions. Word has length 149
[2020-08-21 18:50:30,206 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 18:50:30,206 INFO  L479      AbstractCegarLoop]: Abstraction has 385 states and 448 transitions.
[2020-08-21 18:50:30,206 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-08-21 18:50:30,207 INFO  L276                IsEmpty]: Start isEmpty. Operand 385 states and 448 transitions.
[2020-08-21 18:50:30,209 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 150
[2020-08-21 18:50:30,210 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 18:50:30,210 INFO  L422         BasicCegarLoop]: trace histogram [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]
[2020-08-21 18:50:30,210 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2020-08-21 18:50:30,210 INFO  L427      AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 18:50:30,210 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 18:50:30,211 INFO  L82        PathProgramCache]: Analyzing trace with hash 810217870, now seen corresponding path program 1 times
[2020-08-21 18:50:30,211 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 18:50:30,211 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227585624]
[2020-08-21 18:50:30,211 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 18:50:30,251 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:30,514 WARN  L193               SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-21 18:50:30,515 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 18:50:30,520 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:30,532 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 18:50:30,533 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:30,534 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 18:50:30,535 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:30,535 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 18:50:30,536 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:30,537 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 18:50:30,537 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:30,547 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28
[2020-08-21 18:50:30,547 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:30,561 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-21 18:50:30,563 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:30,578 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:50:30,580 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:30,583 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:50:30,585 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:30,588 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:50:30,588 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:30,590 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 18:50:30,590 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:30,592 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16
[2020-08-21 18:50:30,593 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:30,594 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 18:50:30,595 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:30,596 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 18:50:30,597 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:30,598 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 18:50:30,598 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:30,601 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2020-08-21 18:50:30,602 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:30,603 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 18:50:30,603 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:30,606 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106
[2020-08-21 18:50:30,607 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:30,608 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111
[2020-08-21 18:50:30,610 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:30,613 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:50:30,613 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:30,615 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 18:50:30,616 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:30,617 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2020-08-21 18:50:30,617 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:30,619 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135
[2020-08-21 18:50:30,620 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:30,621 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141
[2020-08-21 18:50:30,622 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:30,655 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked.
[2020-08-21 18:50:30,655 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227585624]
[2020-08-21 18:50:30,656 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-08-21 18:50:30,656 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10
[2020-08-21 18:50:30,656 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268497440]
[2020-08-21 18:50:30,657 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-08-21 18:50:30,657 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 18:50:30,657 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-08-21 18:50:30,657 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90
[2020-08-21 18:50:30,658 INFO  L87              Difference]: Start difference. First operand 385 states and 448 transitions. Second operand 10 states.
[2020-08-21 18:50:31,093 WARN  L193               SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-21 18:50:32,766 WARN  L193               SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 18:50:33,012 WARN  L193               SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 18:50:33,239 WARN  L193               SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 18:50:33,473 WARN  L193               SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-21 18:50:33,758 WARN  L193               SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-21 18:50:34,201 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 18:50:34,201 INFO  L93              Difference]: Finished difference Result 418 states and 500 transitions.
[2020-08-21 18:50:34,202 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2020-08-21 18:50:34,202 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 149
[2020-08-21 18:50:34,203 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 18:50:34,207 INFO  L225             Difference]: With dead ends: 418
[2020-08-21 18:50:34,207 INFO  L226             Difference]: Without dead ends: 415
[2020-08-21 18:50:34,212 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342
[2020-08-21 18:50:34,217 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 415 states.
[2020-08-21 18:50:34,329 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 385.
[2020-08-21 18:50:34,330 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 385 states.
[2020-08-21 18:50:34,332 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 447 transitions.
[2020-08-21 18:50:34,333 INFO  L78                 Accepts]: Start accepts. Automaton has 385 states and 447 transitions. Word has length 149
[2020-08-21 18:50:34,334 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 18:50:34,334 INFO  L479      AbstractCegarLoop]: Abstraction has 385 states and 447 transitions.
[2020-08-21 18:50:34,334 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-08-21 18:50:34,335 INFO  L276                IsEmpty]: Start isEmpty. Operand 385 states and 447 transitions.
[2020-08-21 18:50:34,336 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 154
[2020-08-21 18:50:34,337 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 18:50:34,337 INFO  L422         BasicCegarLoop]: trace histogram [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]
[2020-08-21 18:50:34,337 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2020-08-21 18:50:34,337 INFO  L427      AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 18:50:34,337 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 18:50:34,338 INFO  L82        PathProgramCache]: Analyzing trace with hash -488644751, now seen corresponding path program 1 times
[2020-08-21 18:50:34,338 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 18:50:34,339 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816927709]
[2020-08-21 18:50:34,339 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 18:50:34,382 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:34,639 WARN  L193               SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-21 18:50:34,640 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 18:50:34,651 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:34,663 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 18:50:34,664 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:34,665 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 18:50:34,665 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:34,666 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 18:50:34,666 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:34,667 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 18:50:34,667 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:34,675 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28
[2020-08-21 18:50:34,676 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:34,689 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-21 18:50:34,691 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:34,711 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:50:34,713 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:34,721 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:50:34,723 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:34,729 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:50:34,730 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:34,735 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 18:50:34,736 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:34,742 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16
[2020-08-21 18:50:34,743 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:34,746 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 18:50:34,746 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:34,747 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 18:50:34,748 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:34,751 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 18:50:34,751 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:34,754 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2020-08-21 18:50:34,755 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:34,756 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 18:50:34,757 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:34,760 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106
[2020-08-21 18:50:34,761 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:34,781 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111
[2020-08-21 18:50:34,783 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:34,785 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:50:34,786 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:34,788 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 18:50:34,788 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:34,789 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2020-08-21 18:50:34,790 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:34,793 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:50:34,794 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:34,795 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139
[2020-08-21 18:50:34,795 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:34,812 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145
[2020-08-21 18:50:34,813 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:34,834 INFO  L134       CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2020-08-21 18:50:34,834 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816927709]
[2020-08-21 18:50:34,834 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-08-21 18:50:34,835 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12
[2020-08-21 18:50:34,835 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724642274]
[2020-08-21 18:50:34,835 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-08-21 18:50:34,835 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 18:50:34,836 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-08-21 18:50:34,836 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132
[2020-08-21 18:50:34,836 INFO  L87              Difference]: Start difference. First operand 385 states and 447 transitions. Second operand 12 states.
[2020-08-21 18:50:35,162 WARN  L193               SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-21 18:50:35,765 WARN  L193               SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-21 18:50:36,639 WARN  L193               SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 18:50:36,912 WARN  L193               SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 18:50:37,146 WARN  L193               SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 18:50:37,397 WARN  L193               SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 18:50:37,665 WARN  L193               SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-21 18:50:37,904 WARN  L193               SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-21 18:50:39,125 WARN  L193               SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-21 18:50:39,977 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 18:50:39,978 INFO  L93              Difference]: Finished difference Result 922 states and 1160 transitions.
[2020-08-21 18:50:39,978 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. 
[2020-08-21 18:50:39,979 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states. Word has length 153
[2020-08-21 18:50:39,979 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 18:50:39,984 INFO  L225             Difference]: With dead ends: 922
[2020-08-21 18:50:39,984 INFO  L226             Difference]: Without dead ends: 624
[2020-08-21 18:50:39,986 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870
[2020-08-21 18:50:39,988 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 624 states.
[2020-08-21 18:50:40,091 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 528.
[2020-08-21 18:50:40,091 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 528 states.
[2020-08-21 18:50:40,093 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 621 transitions.
[2020-08-21 18:50:40,094 INFO  L78                 Accepts]: Start accepts. Automaton has 528 states and 621 transitions. Word has length 153
[2020-08-21 18:50:40,094 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 18:50:40,095 INFO  L479      AbstractCegarLoop]: Abstraction has 528 states and 621 transitions.
[2020-08-21 18:50:40,095 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-08-21 18:50:40,095 INFO  L276                IsEmpty]: Start isEmpty. Operand 528 states and 621 transitions.
[2020-08-21 18:50:40,098 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 208
[2020-08-21 18:50:40,099 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 18:50:40,099 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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]
[2020-08-21 18:50:40,099 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2020-08-21 18:50:40,100 INFO  L427      AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 18:50:40,100 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 18:50:40,100 INFO  L82        PathProgramCache]: Analyzing trace with hash 700598337, now seen corresponding path program 2 times
[2020-08-21 18:50:40,100 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 18:50:40,101 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979573210]
[2020-08-21 18:50:40,101 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 18:50:40,170 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:40,409 WARN  L193               SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-21 18:50:40,409 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 18:50:40,413 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:40,438 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 18:50:40,439 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:40,443 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 18:50:40,443 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:40,444 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 18:50:40,444 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:40,445 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 18:50:40,445 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:40,452 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28
[2020-08-21 18:50:40,453 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:40,463 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-21 18:50:40,466 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:40,484 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:50:40,486 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:40,503 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:50:40,506 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:40,518 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:50:40,519 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:40,523 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 18:50:40,524 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:40,531 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16
[2020-08-21 18:50:40,533 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:40,535 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 18:50:40,536 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:40,537 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 18:50:40,538 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:40,539 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 18:50:40,539 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:40,542 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2020-08-21 18:50:40,544 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:40,546 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 18:50:40,546 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:40,550 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104
[2020-08-21 18:50:40,554 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:40,587 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 18:50:40,588 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:40,590 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 18:50:40,593 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:40,609 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:50:40,611 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:40,650 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 18:50:40,652 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:40,683 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2020-08-21 18:50:40,684 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:40,685 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:50:40,686 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:40,687 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32
[2020-08-21 18:50:40,688 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:40,689 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 18:50:40,689 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:40,693 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160
[2020-08-21 18:50:40,694 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:40,696 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165
[2020-08-21 18:50:40,697 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:40,699 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:50:40,700 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:40,702 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 18:50:40,702 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:40,723 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2020-08-21 18:50:40,724 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:40,724 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:50:40,725 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:40,726 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193
[2020-08-21 18:50:40,726 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:40,727 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199
[2020-08-21 18:50:40,727 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:40,777 INFO  L134       CoverageAnalysis]: Checked inductivity of 112 backedges. 49 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked.
[2020-08-21 18:50:40,778 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979573210]
[2020-08-21 18:50:40,778 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-08-21 18:50:40,778 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13
[2020-08-21 18:50:40,778 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110347335]
[2020-08-21 18:50:40,779 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-08-21 18:50:40,779 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 18:50:40,779 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-08-21 18:50:40,780 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156
[2020-08-21 18:50:40,780 INFO  L87              Difference]: Start difference. First operand 528 states and 621 transitions. Second operand 13 states.
[2020-08-21 18:50:41,759 WARN  L193               SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-21 18:50:42,023 WARN  L193               SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-21 18:50:43,752 WARN  L193               SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 194
[2020-08-21 18:50:44,000 WARN  L193               SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-21 18:50:44,233 WARN  L193               SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-21 18:50:44,659 WARN  L193               SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186
[2020-08-21 18:50:46,235 WARN  L193               SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 189
[2020-08-21 18:50:46,494 WARN  L193               SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 195
[2020-08-21 18:50:46,776 WARN  L193               SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-21 18:50:47,018 WARN  L193               SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-21 18:50:48,002 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 18:50:48,002 INFO  L93              Difference]: Finished difference Result 1442 states and 1789 transitions.
[2020-08-21 18:50:48,003 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. 
[2020-08-21 18:50:48,003 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 207
[2020-08-21 18:50:48,004 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 18:50:48,010 INFO  L225             Difference]: With dead ends: 1442
[2020-08-21 18:50:48,010 INFO  L226             Difference]: Without dead ends: 999
[2020-08-21 18:50:48,013 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 80 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=299, Invalid=961, Unknown=0, NotChecked=0, Total=1260
[2020-08-21 18:50:48,014 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 999 states.
[2020-08-21 18:50:48,225 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 850.
[2020-08-21 18:50:48,226 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 850 states.
[2020-08-21 18:50:48,230 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 986 transitions.
[2020-08-21 18:50:48,231 INFO  L78                 Accepts]: Start accepts. Automaton has 850 states and 986 transitions. Word has length 207
[2020-08-21 18:50:48,232 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 18:50:48,232 INFO  L479      AbstractCegarLoop]: Abstraction has 850 states and 986 transitions.
[2020-08-21 18:50:48,232 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-08-21 18:50:48,232 INFO  L276                IsEmpty]: Start isEmpty. Operand 850 states and 986 transitions.
[2020-08-21 18:50:48,237 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 208
[2020-08-21 18:50:48,237 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 18:50:48,237 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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]
[2020-08-21 18:50:48,238 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2020-08-21 18:50:48,238 INFO  L427      AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 18:50:48,238 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 18:50:48,238 INFO  L82        PathProgramCache]: Analyzing trace with hash -1257976449, now seen corresponding path program 1 times
[2020-08-21 18:50:48,239 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 18:50:48,239 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297776310]
[2020-08-21 18:50:48,239 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 18:50:48,299 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:48,525 WARN  L193               SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-21 18:50:48,525 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 18:50:48,529 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:48,538 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 18:50:48,539 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:48,539 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 18:50:48,539 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:48,540 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 18:50:48,541 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:48,553 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 18:50:48,553 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:48,562 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28
[2020-08-21 18:50:48,562 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:48,577 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-21 18:50:48,579 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:48,597 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:50:48,599 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:48,602 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:50:48,602 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:48,604 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:50:48,604 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:48,605 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 18:50:48,605 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:48,606 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16
[2020-08-21 18:50:48,606 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:48,608 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 18:50:48,608 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:48,609 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 18:50:48,610 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:48,610 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 18:50:48,611 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:48,613 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2020-08-21 18:50:48,618 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:48,619 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 18:50:48,620 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:48,622 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104
[2020-08-21 18:50:48,626 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:48,634 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 18:50:48,635 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:48,636 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 18:50:48,637 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:48,669 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:50:48,671 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:48,710 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 18:50:48,711 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:48,712 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2020-08-21 18:50:48,716 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:48,717 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:50:48,720 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:48,722 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32
[2020-08-21 18:50:48,723 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:48,724 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 18:50:48,729 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:48,731 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160
[2020-08-21 18:50:48,731 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:48,732 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165
[2020-08-21 18:50:48,734 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:48,735 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:50:48,736 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:48,737 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 18:50:48,738 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:48,740 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2020-08-21 18:50:48,741 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:48,743 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 18:50:48,744 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:48,750 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193
[2020-08-21 18:50:48,751 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:48,752 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199
[2020-08-21 18:50:48,752 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 18:50:48,788 INFO  L134       CoverageAnalysis]: Checked inductivity of 112 backedges. 41 proven. 8 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked.
[2020-08-21 18:50:48,789 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297776310]
[2020-08-21 18:50:48,789 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-08-21 18:50:48,789 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13
[2020-08-21 18:50:48,790 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023435850]
[2020-08-21 18:50:48,791 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-08-21 18:50:48,791 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 18:50:48,791 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-08-21 18:50:48,792 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156
[2020-08-21 18:50:48,792 INFO  L87              Difference]: Start difference. First operand 850 states and 986 transitions. Second operand 13 states.
[2020-08-21 18:50:49,253 WARN  L193               SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-21 18:50:49,498 WARN  L193               SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-21 18:50:49,717 WARN  L193               SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-21 18:50:51,117 WARN  L193               SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-21 18:50:51,371 WARN  L193               SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-21 18:50:51,643 WARN  L193               SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 18:50:51,889 WARN  L193               SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 18:50:52,176 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 18:50:52,176 INFO  L93              Difference]: Finished difference Result 1133 states and 1322 transitions.
[2020-08-21 18:50:52,176 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2020-08-21 18:50:52,177 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 207
[2020-08-21 18:50:52,177 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 18:50:52,178 INFO  L225             Difference]: With dead ends: 1133
[2020-08-21 18:50:52,178 INFO  L226             Difference]: Without dead ends: 0
[2020-08-21 18:50:52,182 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420
[2020-08-21 18:50:52,182 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-08-21 18:50:52,182 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-08-21 18:50:52,182 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-08-21 18:50:52,182 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-08-21 18:50:52,183 INFO  L78                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 207
[2020-08-21 18:50:52,183 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 18:50:52,183 INFO  L479      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-08-21 18:50:52,183 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-08-21 18:50:52,183 INFO  L276                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-08-21 18:50:52,183 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2020-08-21 18:50:52,184 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2020-08-21 18:50:52,186 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-08-21 18:50:53,778 WARN  L193               SmtUtils]: Spent 829.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 246
[2020-08-21 18:50:54,607 WARN  L193               SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 246
[2020-08-21 18:50:55,082 WARN  L193               SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 245