/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=SMALLEST --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_spec5_product52.cil.c


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


This is Ultimate 0.1.25-177f698
[2020-08-21 15:39:14,682 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-08-21 15:39:14,685 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-08-21 15:39:14,709 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-08-21 15:39:14,710 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-08-21 15:39:14,711 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-08-21 15:39:14,712 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-08-21 15:39:14,714 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-08-21 15:39:14,716 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-08-21 15:39:14,716 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-08-21 15:39:14,717 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-08-21 15:39:14,718 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-08-21 15:39:14,719 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-08-21 15:39:14,720 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-08-21 15:39:14,721 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-08-21 15:39:14,722 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-08-21 15:39:14,723 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-08-21 15:39:14,724 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-08-21 15:39:14,725 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-08-21 15:39:14,727 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-08-21 15:39:14,729 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-08-21 15:39:14,730 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-08-21 15:39:14,731 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-08-21 15:39:14,732 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-08-21 15:39:14,735 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-08-21 15:39:14,735 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-08-21 15:39:14,735 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-08-21 15:39:14,736 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-08-21 15:39:14,736 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-08-21 15:39:14,738 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-08-21 15:39:14,738 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-08-21 15:39:14,739 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-08-21 15:39:14,739 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-08-21 15:39:14,740 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-08-21 15:39:14,741 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-08-21 15:39:14,741 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-08-21 15:39:14,742 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-08-21 15:39:14,742 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-08-21 15:39:14,743 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-08-21 15:39:14,744 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-08-21 15:39:14,747 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-08-21 15:39:14,748 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-08-21 15:39:14,773 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-08-21 15:39:14,774 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-08-21 15:39:14,775 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-08-21 15:39:14,775 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-08-21 15:39:14,775 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-08-21 15:39:14,776 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-08-21 15:39:14,776 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-08-21 15:39:14,776 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-08-21 15:39:14,776 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-08-21 15:39:14,776 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-08-21 15:39:14,777 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-08-21 15:39:14,777 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-08-21 15:39:14,777 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-08-21 15:39:14,777 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-08-21 15:39:14,777 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-08-21 15:39:14,778 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-08-21 15:39:14,778 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-08-21 15:39:14,778 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-08-21 15:39:14,778 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-08-21 15:39:14,779 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-08-21 15:39:14,779 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-08-21 15:39:14,779 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-21 15:39:14,779 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-08-21 15:39:14,779 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-08-21 15:39:14,780 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-08-21 15:39:14,780 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-08-21 15:39:14,780 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-08-21 15:39:14,780 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-08-21 15:39:14,780 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-08-21 15:39:14,781 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=SMALLEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true;
[2020-08-21 15:39:15,078 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-08-21 15:39:15,090 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-08-21 15:39:15,096 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-08-21 15:39:15,100 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-08-21 15:39:15,100 INFO  L275        PluginConnector]: CDTParser initialized
[2020-08-21 15:39:15,101 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product52.cil.c
[2020-08-21 15:39:15,163 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/46ca33bc2/9ff57790bfc34f4e900043f10e96a164/FLAGf16eb02c0
[2020-08-21 15:39:15,718 INFO  L306              CDTParser]: Found 1 translation units.
[2020-08-21 15:39:15,718 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product52.cil.c
[2020-08-21 15:39:15,732 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/46ca33bc2/9ff57790bfc34f4e900043f10e96a164/FLAGf16eb02c0
[2020-08-21 15:39:16,061 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/46ca33bc2/9ff57790bfc34f4e900043f10e96a164
[2020-08-21 15:39:16,072 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-08-21 15:39:16,074 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-08-21 15:39:16,078 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-08-21 15:39:16,079 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-08-21 15:39:16,082 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-08-21 15:39:16,083 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:39:16" (1/1) ...
[2020-08-21 15:39:16,087 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3210105d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:39:16, skipping insertion in model container
[2020-08-21 15:39:16,087 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:39:16" (1/1) ...
[2020-08-21 15:39:16,096 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-08-21 15:39:16,140 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-08-21 15:39:16,576 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-21 15:39:16,601 INFO  L203         MainTranslator]: Completed pre-run
[2020-08-21 15:39:16,674 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-21 15:39:16,709 INFO  L208         MainTranslator]: Completed translation
[2020-08-21 15:39:16,710 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:39:16 WrapperNode
[2020-08-21 15:39:16,710 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-08-21 15:39:16,711 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-08-21 15:39:16,711 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-08-21 15:39:16,711 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-08-21 15:39:16,722 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:39:16" (1/1) ...
[2020-08-21 15:39:16,722 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:39:16" (1/1) ...
[2020-08-21 15:39:16,743 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:39:16" (1/1) ...
[2020-08-21 15:39:16,743 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:39:16" (1/1) ...
[2020-08-21 15:39:16,776 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:39:16" (1/1) ...
[2020-08-21 15:39:16,795 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:39:16" (1/1) ...
[2020-08-21 15:39:16,802 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:39:16" (1/1) ...
[2020-08-21 15:39:16,825 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-08-21 15:39:16,826 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-08-21 15:39:16,829 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-08-21 15:39:16,829 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-08-21 15:39:16,830 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:39:16" (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 15:39:16,917 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-08-21 15:39:16,917 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-08-21 15:39:16,918 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-08-21 15:39:16,918 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-08-21 15:39:16,918 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-08-21 15:39:16,919 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-08-21 15:39:16,919 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-08-21 15:39:16,919 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-08-21 15:39:16,920 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-08-21 15:39:16,921 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-08-21 15:39:16,921 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-08-21 15:39:16,921 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-08-21 15:39:16,921 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-08-21 15:39:16,921 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-08-21 15:39:16,921 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-08-21 15:39:16,922 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1
[2020-08-21 15:39:16,923 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2
[2020-08-21 15:39:16,923 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3
[2020-08-21 15:39:16,923 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-08-21 15:39:16,923 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-08-21 15:39:16,924 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-08-21 15:39:16,924 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-08-21 15:39:16,924 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-08-21 15:39:16,924 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-08-21 15:39:16,924 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry
[2020-08-21 15:39:16,925 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry
[2020-08-21 15:39:16,926 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-08-21 15:39:16,926 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-08-21 15:39:16,926 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base
[2020-08-21 15:39:16,926 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor
[2020-08-21 15:39:16,926 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-08-21 15:39:16,927 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-08-21 15:39:16,927 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-08-21 15:39:16,927 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-08-21 15:39:16,927 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-08-21 15:39:16,927 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-08-21 15:39:16,927 INFO  L138     BoogieDeclarations]: Found implementation of procedure isHighWaterLevel
[2020-08-21 15:39:16,927 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterLevel
[2020-08-21 15:39:16,928 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopSystem
[2020-08-21 15:39:16,928 INFO  L138     BoogieDeclarations]: Found implementation of procedure startSystem
[2020-08-21 15:39:16,928 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-08-21 15:39:16,928 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-08-21 15:39:16,928 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-08-21 15:39:16,929 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-08-21 15:39:16,929 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-08-21 15:39:16,929 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-08-21 15:39:16,929 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-08-21 15:39:16,929 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-08-21 15:39:16,929 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-08-21 15:39:16,930 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-08-21 15:39:16,930 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-08-21 15:39:16,930 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-08-21 15:39:16,930 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-08-21 15:39:16,930 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-08-21 15:39:16,931 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-08-21 15:39:16,931 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-08-21 15:39:16,931 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-08-21 15:39:16,931 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-08-21 15:39:16,932 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-08-21 15:39:16,932 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-08-21 15:39:16,932 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-08-21 15:39:16,932 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-08-21 15:39:16,932 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-08-21 15:39:16,932 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-08-21 15:39:16,932 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-08-21 15:39:16,933 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-08-21 15:39:16,933 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-08-21 15:39:16,933 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-08-21 15:39:16,933 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-08-21 15:39:16,933 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-08-21 15:39:16,933 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-08-21 15:39:16,934 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1
[2020-08-21 15:39:16,934 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-08-21 15:39:16,935 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-08-21 15:39:16,935 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-08-21 15:39:16,936 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-08-21 15:39:16,936 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-08-21 15:39:16,936 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-08-21 15:39:16,936 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-08-21 15:39:16,936 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-08-21 15:39:16,936 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-08-21 15:39:16,937 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2
[2020-08-21 15:39:16,937 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3
[2020-08-21 15:39:16,938 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-08-21 15:39:16,938 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-08-21 15:39:16,938 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-08-21 15:39:16,938 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry
[2020-08-21 15:39:16,938 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry
[2020-08-21 15:39:16,938 INFO  L130     BoogieDeclarations]: Found specification of procedure startSystem
[2020-08-21 15:39:16,938 INFO  L130     BoogieDeclarations]: Found specification of procedure stopSystem
[2020-08-21 15:39:16,938 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-08-21 15:39:16,939 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-08-21 15:39:16,939 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-08-21 15:39:16,939 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base
[2020-08-21 15:39:16,939 INFO  L130     BoogieDeclarations]: Found specification of procedure isHighWaterLevel
[2020-08-21 15:39:16,939 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor
[2020-08-21 15:39:16,939 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterLevel
[2020-08-21 15:39:16,940 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-08-21 15:39:16,940 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-08-21 15:39:16,940 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-08-21 15:39:16,940 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-08-21 15:39:16,940 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-08-21 15:39:18,138 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-08-21 15:39:18,138 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-08-21 15:39:18,144 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:39:18 BoogieIcfgContainer
[2020-08-21 15:39:18,144 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-08-21 15:39:18,145 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-08-21 15:39:18,145 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-08-21 15:39:18,149 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-08-21 15:39:18,149 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:39:16" (1/3) ...
[2020-08-21 15:39:18,150 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b59c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:39:18, skipping insertion in model container
[2020-08-21 15:39:18,150 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:39:16" (2/3) ...
[2020-08-21 15:39:18,151 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b59c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:39:18, skipping insertion in model container
[2020-08-21 15:39:18,151 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:39:18" (3/3) ...
[2020-08-21 15:39:18,153 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec5_product52.cil.c
[2020-08-21 15:39:18,164 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-08-21 15:39:18,172 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-08-21 15:39:18,187 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-08-21 15:39:18,214 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-08-21 15:39:18,214 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-08-21 15:39:18,214 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-08-21 15:39:18,215 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-08-21 15:39:18,215 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-08-21 15:39:18,215 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-08-21 15:39:18,215 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-08-21 15:39:18,215 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-08-21 15:39:18,238 INFO  L276                IsEmpty]: Start isEmpty. Operand 191 states.
[2020-08-21 15:39:18,249 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 60
[2020-08-21 15:39:18,250 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 15:39:18,251 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-21 15:39:18,252 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 15:39:18,258 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 15:39:18,258 INFO  L82        PathProgramCache]: Analyzing trace with hash -1089631799, now seen corresponding path program 1 times
[2020-08-21 15:39:18,267 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 15:39:18,268 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258009009]
[2020-08-21 15:39:18,268 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 15:39:18,553 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:19,038 WARN  L193               SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-21 15:39:19,040 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:39:19,049 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:19,093 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 15:39:19,094 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:19,102 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 15:39:19,103 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:19,108 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 15:39:19,109 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:19,112 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 15:39:19,116 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:19,127 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2020-08-21 15:39:19,128 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:19,134 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32
[2020-08-21 15:39:19,138 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:19,140 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:39:19,145 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:19,148 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44
[2020-08-21 15:39:19,149 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:19,152 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50
[2020-08-21 15:39:19,153 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:19,168 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2020-08-21 15:39:19,169 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258009009]
[2020-08-21 15:39:19,171 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 15:39:19,171 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-08-21 15:39:19,172 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916859600]
[2020-08-21 15:39:19,177 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-08-21 15:39:19,178 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 15:39:19,193 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-08-21 15:39:19,194 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2020-08-21 15:39:19,196 INFO  L87              Difference]: Start difference. First operand 191 states. Second operand 4 states.
[2020-08-21 15:39:20,464 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 15:39:20,464 INFO  L93              Difference]: Finished difference Result 328 states and 422 transitions.
[2020-08-21 15:39:20,465 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-08-21 15:39:20,467 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 59
[2020-08-21 15:39:20,468 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 15:39:20,483 INFO  L225             Difference]: With dead ends: 328
[2020-08-21 15:39:20,484 INFO  L226             Difference]: Without dead ends: 181
[2020-08-21 15:39:20,489 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2020-08-21 15:39:20,511 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 181 states.
[2020-08-21 15:39:20,618 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 148.
[2020-08-21 15:39:20,619 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 148 states.
[2020-08-21 15:39:20,622 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 174 transitions.
[2020-08-21 15:39:20,624 INFO  L78                 Accepts]: Start accepts. Automaton has 148 states and 174 transitions. Word has length 59
[2020-08-21 15:39:20,624 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 15:39:20,624 INFO  L479      AbstractCegarLoop]: Abstraction has 148 states and 174 transitions.
[2020-08-21 15:39:20,624 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-08-21 15:39:20,625 INFO  L276                IsEmpty]: Start isEmpty. Operand 148 states and 174 transitions.
[2020-08-21 15:39:20,628 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 61
[2020-08-21 15:39:20,628 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 15:39:20,629 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-21 15:39:20,629 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-08-21 15:39:20,629 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 15:39:20,629 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 15:39:20,630 INFO  L82        PathProgramCache]: Analyzing trace with hash -1975382983, now seen corresponding path program 1 times
[2020-08-21 15:39:20,630 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 15:39:20,630 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851301818]
[2020-08-21 15:39:20,630 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 15:39:20,683 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:21,028 WARN  L193               SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-21 15:39:21,029 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:39:21,035 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:21,052 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 15:39:21,053 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:21,054 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 15:39:21,055 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:21,056 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 15:39:21,056 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:21,057 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 15:39:21,058 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:21,066 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2020-08-21 15:39:21,067 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:21,068 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33
[2020-08-21 15:39:21,070 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:21,072 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:39:21,072 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:21,074 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2020-08-21 15:39:21,075 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:21,076 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2020-08-21 15:39:21,077 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:21,086 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2020-08-21 15:39:21,086 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851301818]
[2020-08-21 15:39:21,087 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 15:39:21,087 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-08-21 15:39:21,087 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387592243]
[2020-08-21 15:39:21,089 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-08-21 15:39:21,089 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 15:39:21,090 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-08-21 15:39:21,090 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-08-21 15:39:21,090 INFO  L87              Difference]: Start difference. First operand 148 states and 174 transitions. Second operand 5 states.
[2020-08-21 15:39:21,619 WARN  L193               SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-08-21 15:39:22,527 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 15:39:22,527 INFO  L93              Difference]: Finished difference Result 263 states and 322 transitions.
[2020-08-21 15:39:22,535 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-08-21 15:39:22,535 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 60
[2020-08-21 15:39:22,536 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 15:39:22,542 INFO  L225             Difference]: With dead ends: 263
[2020-08-21 15:39:22,542 INFO  L226             Difference]: Without dead ends: 171
[2020-08-21 15:39:22,544 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2020-08-21 15:39:22,546 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 171 states.
[2020-08-21 15:39:22,593 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 139.
[2020-08-21 15:39:22,593 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 139 states.
[2020-08-21 15:39:22,594 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 162 transitions.
[2020-08-21 15:39:22,595 INFO  L78                 Accepts]: Start accepts. Automaton has 139 states and 162 transitions. Word has length 60
[2020-08-21 15:39:22,595 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 15:39:22,595 INFO  L479      AbstractCegarLoop]: Abstraction has 139 states and 162 transitions.
[2020-08-21 15:39:22,595 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-08-21 15:39:22,596 INFO  L276                IsEmpty]: Start isEmpty. Operand 139 states and 162 transitions.
[2020-08-21 15:39:22,598 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 66
[2020-08-21 15:39:22,598 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 15:39:22,598 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-21 15:39:22,599 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-08-21 15:39:22,599 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 15:39:22,599 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 15:39:22,599 INFO  L82        PathProgramCache]: Analyzing trace with hash 1007889166, now seen corresponding path program 1 times
[2020-08-21 15:39:22,599 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 15:39:22,600 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007310999]
[2020-08-21 15:39:22,600 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 15:39:22,634 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:22,967 WARN  L193               SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-21 15:39:22,968 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:39:22,983 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:23,013 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 15:39:23,015 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:23,017 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 15:39:23,019 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:23,020 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 15:39:23,023 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:23,042 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 15:39:23,043 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:23,055 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2020-08-21 15:39:23,056 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:23,057 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2020-08-21 15:39:23,060 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:23,066 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:39:23,067 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:23,071 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50
[2020-08-21 15:39:23,071 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:23,072 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56
[2020-08-21 15:39:23,073 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:23,087 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2020-08-21 15:39:23,088 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1007310999]
[2020-08-21 15:39:23,088 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 15:39:23,088 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2020-08-21 15:39:23,089 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51007936]
[2020-08-21 15:39:23,090 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-08-21 15:39:23,090 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 15:39:23,090 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-08-21 15:39:23,091 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2020-08-21 15:39:23,091 INFO  L87              Difference]: Start difference. First operand 139 states and 162 transitions. Second operand 9 states.
[2020-08-21 15:39:23,526 WARN  L193               SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-21 15:39:23,862 WARN  L193               SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-21 15:39:24,152 WARN  L193               SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-21 15:39:24,395 WARN  L193               SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-21 15:39:25,323 WARN  L193               SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-08-21 15:39:27,132 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 15:39:27,132 INFO  L93              Difference]: Finished difference Result 466 states and 577 transitions.
[2020-08-21 15:39:27,133 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-08-21 15:39:27,133 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 65
[2020-08-21 15:39:27,134 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 15:39:27,138 INFO  L225             Difference]: With dead ends: 466
[2020-08-21 15:39:27,138 INFO  L226             Difference]: Without dead ends: 355
[2020-08-21 15:39:27,139 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240
[2020-08-21 15:39:27,140 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 355 states.
[2020-08-21 15:39:27,216 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 294.
[2020-08-21 15:39:27,216 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 294 states.
[2020-08-21 15:39:27,218 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 356 transitions.
[2020-08-21 15:39:27,219 INFO  L78                 Accepts]: Start accepts. Automaton has 294 states and 356 transitions. Word has length 65
[2020-08-21 15:39:27,219 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 15:39:27,219 INFO  L479      AbstractCegarLoop]: Abstraction has 294 states and 356 transitions.
[2020-08-21 15:39:27,219 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-08-21 15:39:27,219 INFO  L276                IsEmpty]: Start isEmpty. Operand 294 states and 356 transitions.
[2020-08-21 15:39:27,222 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 71
[2020-08-21 15:39:27,222 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 15:39:27,222 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-21 15:39:27,223 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-08-21 15:39:27,223 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 15:39:27,223 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 15:39:27,223 INFO  L82        PathProgramCache]: Analyzing trace with hash 1025318737, now seen corresponding path program 1 times
[2020-08-21 15:39:27,223 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 15:39:27,224 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1264591500]
[2020-08-21 15:39:27,224 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 15:39:27,251 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:27,568 WARN  L193               SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-21 15:39:27,570 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:39:27,583 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:27,598 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 15:39:27,599 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:27,600 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 15:39:27,600 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:27,601 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 15:39:27,602 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:27,604 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 15:39:27,604 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:27,635 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2020-08-21 15:39:27,636 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:27,651 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-21 15:39:27,652 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:27,656 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43
[2020-08-21 15:39:27,661 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:27,668 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:39:27,668 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:27,669 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55
[2020-08-21 15:39:27,673 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:27,677 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61
[2020-08-21 15:39:27,678 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:27,744 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-08-21 15:39:27,745 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1264591500]
[2020-08-21 15:39:27,745 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 15:39:27,745 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2020-08-21 15:39:27,747 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406858957]
[2020-08-21 15:39:27,747 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-08-21 15:39:27,748 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 15:39:27,748 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-08-21 15:39:27,748 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2020-08-21 15:39:27,749 INFO  L87              Difference]: Start difference. First operand 294 states and 356 transitions. Second operand 9 states.
[2020-08-21 15:39:28,201 WARN  L193               SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-21 15:39:28,885 WARN  L193               SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-21 15:39:29,704 WARN  L193               SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-21 15:39:30,013 WARN  L193               SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-08-21 15:39:30,270 WARN  L193               SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-21 15:39:30,530 WARN  L193               SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-21 15:39:31,382 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 15:39:31,382 INFO  L93              Difference]: Finished difference Result 755 states and 986 transitions.
[2020-08-21 15:39:31,383 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2020-08-21 15:39:31,383 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 70
[2020-08-21 15:39:31,384 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 15:39:31,389 INFO  L225             Difference]: With dead ends: 755
[2020-08-21 15:39:31,389 INFO  L226             Difference]: Without dead ends: 489
[2020-08-21 15:39:31,392 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342
[2020-08-21 15:39:31,393 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 489 states.
[2020-08-21 15:39:31,485 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 421.
[2020-08-21 15:39:31,486 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 421 states.
[2020-08-21 15:39:31,489 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 507 transitions.
[2020-08-21 15:39:31,489 INFO  L78                 Accepts]: Start accepts. Automaton has 421 states and 507 transitions. Word has length 70
[2020-08-21 15:39:31,490 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 15:39:31,490 INFO  L479      AbstractCegarLoop]: Abstraction has 421 states and 507 transitions.
[2020-08-21 15:39:31,490 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-08-21 15:39:31,490 INFO  L276                IsEmpty]: Start isEmpty. Operand 421 states and 507 transitions.
[2020-08-21 15:39:31,493 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 94
[2020-08-21 15:39:31,493 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 15:39:31,493 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-21 15:39:31,493 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-08-21 15:39:31,494 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 15:39:31,494 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 15:39:31,494 INFO  L82        PathProgramCache]: Analyzing trace with hash -2085443903, now seen corresponding path program 1 times
[2020-08-21 15:39:31,494 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 15:39:31,495 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029576859]
[2020-08-21 15:39:31,495 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 15:39:31,522 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:31,757 WARN  L193               SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-21 15:39:31,758 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:39:31,763 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:31,774 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 15:39:31,774 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:31,776 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 15:39:31,776 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:31,777 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 15:39:31,777 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:31,778 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 15:39:31,779 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:31,785 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2020-08-21 15:39:31,786 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:31,787 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2020-08-21 15:39:31,787 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:31,789 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:39:31,789 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:31,797 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48
[2020-08-21 15:39:31,799 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:31,803 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 15:39:31,805 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:31,822 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 15:39:31,824 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:31,855 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 15:39:31,856 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:31,858 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16
[2020-08-21 15:39:31,858 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:31,860 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78
[2020-08-21 15:39:31,861 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:31,862 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84
[2020-08-21 15:39:31,862 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:31,875 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2020-08-21 15:39:31,876 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029576859]
[2020-08-21 15:39:31,876 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 15:39:31,876 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2020-08-21 15:39:31,876 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447938862]
[2020-08-21 15:39:31,877 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-08-21 15:39:31,877 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 15:39:31,877 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-08-21 15:39:31,878 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2020-08-21 15:39:31,878 INFO  L87              Difference]: Start difference. First operand 421 states and 507 transitions. Second operand 9 states.
[2020-08-21 15:39:33,049 WARN  L193               SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-21 15:39:33,281 WARN  L193               SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 194
[2020-08-21 15:39:33,532 WARN  L193               SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-08-21 15:39:33,767 WARN  L193               SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-08-21 15:39:34,566 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 15:39:34,566 INFO  L93              Difference]: Finished difference Result 903 states and 1149 transitions.
[2020-08-21 15:39:34,567 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-08-21 15:39:34,567 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 93
[2020-08-21 15:39:34,568 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 15:39:34,572 INFO  L225             Difference]: With dead ends: 903
[2020-08-21 15:39:34,572 INFO  L226             Difference]: Without dead ends: 510
[2020-08-21 15:39:34,574 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182
[2020-08-21 15:39:34,575 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 510 states.
[2020-08-21 15:39:34,659 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 434.
[2020-08-21 15:39:34,660 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 434 states.
[2020-08-21 15:39:34,662 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 521 transitions.
[2020-08-21 15:39:34,663 INFO  L78                 Accepts]: Start accepts. Automaton has 434 states and 521 transitions. Word has length 93
[2020-08-21 15:39:34,663 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 15:39:34,664 INFO  L479      AbstractCegarLoop]: Abstraction has 434 states and 521 transitions.
[2020-08-21 15:39:34,664 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-08-21 15:39:34,664 INFO  L276                IsEmpty]: Start isEmpty. Operand 434 states and 521 transitions.
[2020-08-21 15:39:34,665 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 94
[2020-08-21 15:39:34,666 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 15:39:34,666 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-21 15:39:34,666 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-08-21 15:39:34,666 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 15:39:34,667 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 15:39:34,667 INFO  L82        PathProgramCache]: Analyzing trace with hash -1383844029, now seen corresponding path program 1 times
[2020-08-21 15:39:34,667 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 15:39:34,667 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586452046]
[2020-08-21 15:39:34,667 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 15:39:34,691 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:34,969 WARN  L193               SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-21 15:39:34,970 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:39:34,976 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:34,986 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 15:39:34,986 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:34,987 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 15:39:34,987 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:34,988 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 15:39:34,989 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:35,019 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 15:39:35,020 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:35,028 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2020-08-21 15:39:35,028 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:35,030 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2020-08-21 15:39:35,031 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:35,032 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:39:35,032 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:35,042 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48
[2020-08-21 15:39:35,045 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:35,048 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 15:39:35,050 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:35,053 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 15:39:35,054 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:35,080 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 15:39:35,082 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:35,096 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16
[2020-08-21 15:39:35,097 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:35,100 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78
[2020-08-21 15:39:35,100 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:35,101 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84
[2020-08-21 15:39:35,102 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:35,114 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2020-08-21 15:39:35,114 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586452046]
[2020-08-21 15:39:35,114 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 15:39:35,115 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2020-08-21 15:39:35,115 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765156876]
[2020-08-21 15:39:35,115 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-08-21 15:39:35,116 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 15:39:35,116 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-08-21 15:39:35,116 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110
[2020-08-21 15:39:35,116 INFO  L87              Difference]: Start difference. First operand 434 states and 521 transitions. Second operand 11 states.
[2020-08-21 15:39:35,749 WARN  L193               SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-08-21 15:39:36,012 WARN  L193               SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-08-21 15:39:36,237 WARN  L193               SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-08-21 15:39:36,997 WARN  L193               SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-08-21 15:39:37,273 WARN  L193               SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-08-21 15:39:37,523 WARN  L193               SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-08-21 15:39:38,465 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 15:39:38,465 INFO  L93              Difference]: Finished difference Result 930 states and 1198 transitions.
[2020-08-21 15:39:38,466 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-08-21 15:39:38,466 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 93
[2020-08-21 15:39:38,467 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 15:39:38,471 INFO  L225             Difference]: With dead ends: 930
[2020-08-21 15:39:38,471 INFO  L226             Difference]: Without dead ends: 524
[2020-08-21 15:39:38,473 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306
[2020-08-21 15:39:38,475 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 524 states.
[2020-08-21 15:39:38,556 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 442.
[2020-08-21 15:39:38,556 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 442 states.
[2020-08-21 15:39:38,559 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 529 transitions.
[2020-08-21 15:39:38,559 INFO  L78                 Accepts]: Start accepts. Automaton has 442 states and 529 transitions. Word has length 93
[2020-08-21 15:39:38,560 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 15:39:38,560 INFO  L479      AbstractCegarLoop]: Abstraction has 442 states and 529 transitions.
[2020-08-21 15:39:38,560 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-08-21 15:39:38,560 INFO  L276                IsEmpty]: Start isEmpty. Operand 442 states and 529 transitions.
[2020-08-21 15:39:38,562 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 94
[2020-08-21 15:39:38,562 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 15:39:38,562 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-21 15:39:38,563 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-08-21 15:39:38,563 INFO  L427      AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 15:39:38,563 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 15:39:38,563 INFO  L82        PathProgramCache]: Analyzing trace with hash 341636868, now seen corresponding path program 1 times
[2020-08-21 15:39:38,564 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 15:39:38,564 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447151637]
[2020-08-21 15:39:38,564 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 15:39:38,591 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:38,823 WARN  L193               SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-21 15:39:38,824 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:39:38,835 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:38,849 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 15:39:38,850 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:38,851 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 15:39:38,851 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:38,852 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 15:39:38,853 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:38,854 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 15:39:38,854 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:38,875 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2020-08-21 15:39:38,877 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:38,881 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2020-08-21 15:39:38,882 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:38,883 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:39:38,887 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:38,906 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48
[2020-08-21 15:39:38,908 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:38,921 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 15:39:38,923 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:38,933 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 15:39:38,935 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:38,949 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 15:39:38,950 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:38,964 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16
[2020-08-21 15:39:38,965 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:38,967 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78
[2020-08-21 15:39:38,968 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:38,969 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84
[2020-08-21 15:39:38,969 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:38,989 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2020-08-21 15:39:38,989 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447151637]
[2020-08-21 15:39:38,989 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 15:39:38,990 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-08-21 15:39:38,990 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532682376]
[2020-08-21 15:39:38,990 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-08-21 15:39:38,991 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 15:39:38,991 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-08-21 15:39:38,991 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2020-08-21 15:39:38,991 INFO  L87              Difference]: Start difference. First operand 442 states and 529 transitions. Second operand 7 states.
[2020-08-21 15:39:39,338 WARN  L193               SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-21 15:39:39,916 WARN  L193               SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-21 15:39:42,091 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 15:39:42,091 INFO  L93              Difference]: Finished difference Result 1411 states and 1828 transitions.
[2020-08-21 15:39:42,092 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-08-21 15:39:42,092 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 93
[2020-08-21 15:39:42,093 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 15:39:42,100 INFO  L225             Difference]: With dead ends: 1411
[2020-08-21 15:39:42,100 INFO  L226             Difference]: Without dead ends: 997
[2020-08-21 15:39:42,102 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210
[2020-08-21 15:39:42,104 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 997 states.
[2020-08-21 15:39:42,263 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 919.
[2020-08-21 15:39:42,263 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 919 states.
[2020-08-21 15:39:42,268 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1115 transitions.
[2020-08-21 15:39:42,268 INFO  L78                 Accepts]: Start accepts. Automaton has 919 states and 1115 transitions. Word has length 93
[2020-08-21 15:39:42,269 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 15:39:42,269 INFO  L479      AbstractCegarLoop]: Abstraction has 919 states and 1115 transitions.
[2020-08-21 15:39:42,269 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-08-21 15:39:42,269 INFO  L276                IsEmpty]: Start isEmpty. Operand 919 states and 1115 transitions.
[2020-08-21 15:39:42,271 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 98
[2020-08-21 15:39:42,271 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 15:39:42,272 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-21 15:39:42,272 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2020-08-21 15:39:42,272 INFO  L427      AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 15:39:42,272 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 15:39:42,273 INFO  L82        PathProgramCache]: Analyzing trace with hash -643321942, now seen corresponding path program 1 times
[2020-08-21 15:39:42,273 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 15:39:42,273 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164419956]
[2020-08-21 15:39:42,273 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 15:39:42,317 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:42,597 WARN  L193               SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-21 15:39:42,599 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:39:42,609 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:42,623 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 15:39:42,624 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:42,625 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 15:39:42,625 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:42,626 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 15:39:42,627 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:42,628 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 15:39:42,628 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:42,648 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2020-08-21 15:39:42,649 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:42,668 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32
[2020-08-21 15:39:42,670 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:42,718 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42
[2020-08-21 15:39:42,720 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:42,728 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:39:42,728 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:42,744 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52
[2020-08-21 15:39:42,746 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:42,750 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 15:39:42,750 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:42,755 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 15:39:42,756 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:42,758 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 15:39:42,759 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:42,760 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16
[2020-08-21 15:39:42,760 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:42,764 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82
[2020-08-21 15:39:42,765 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:42,781 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88
[2020-08-21 15:39:42,782 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:42,797 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2020-08-21 15:39:42,800 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164419956]
[2020-08-21 15:39:42,801 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 15:39:42,801 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12
[2020-08-21 15:39:42,804 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920182687]
[2020-08-21 15:39:42,805 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-08-21 15:39:42,806 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 15:39:42,806 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-08-21 15:39:42,806 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132
[2020-08-21 15:39:42,806 INFO  L87              Difference]: Start difference. First operand 919 states and 1115 transitions. Second operand 12 states.
[2020-08-21 15:39:43,245 WARN  L193               SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-21 15:39:43,893 WARN  L193               SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-21 15:39:44,620 WARN  L193               SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-21 15:39:44,965 WARN  L193               SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-21 15:39:45,231 WARN  L193               SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192
[2020-08-21 15:39:45,534 WARN  L193               SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-21 15:39:45,809 WARN  L193               SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-21 15:39:47,983 WARN  L193               SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-21 15:39:48,254 WARN  L193               SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-08-21 15:39:48,811 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 15:39:48,811 INFO  L93              Difference]: Finished difference Result 2611 states and 3380 transitions.
[2020-08-21 15:39:48,812 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. 
[2020-08-21 15:39:48,812 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states. Word has length 97
[2020-08-21 15:39:48,812 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 15:39:48,823 INFO  L225             Difference]: With dead ends: 2611
[2020-08-21 15:39:48,823 INFO  L226             Difference]: Without dead ends: 1912
[2020-08-21 15:39:48,827 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332
[2020-08-21 15:39:48,829 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1912 states.
[2020-08-21 15:39:49,128 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 1606.
[2020-08-21 15:39:49,129 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1606 states.
[2020-08-21 15:39:49,138 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 1936 transitions.
[2020-08-21 15:39:49,139 INFO  L78                 Accepts]: Start accepts. Automaton has 1606 states and 1936 transitions. Word has length 97
[2020-08-21 15:39:49,142 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 15:39:49,142 INFO  L479      AbstractCegarLoop]: Abstraction has 1606 states and 1936 transitions.
[2020-08-21 15:39:49,142 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-08-21 15:39:49,142 INFO  L276                IsEmpty]: Start isEmpty. Operand 1606 states and 1936 transitions.
[2020-08-21 15:39:49,148 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 160
[2020-08-21 15:39:49,148 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 15:39:49,149 INFO  L422         BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:39:49,149 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2020-08-21 15:39:49,149 INFO  L427      AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 15:39:49,149 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 15:39:49,150 INFO  L82        PathProgramCache]: Analyzing trace with hash -1477147143, now seen corresponding path program 1 times
[2020-08-21 15:39:49,150 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 15:39:49,150 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903239007]
[2020-08-21 15:39:49,150 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 15:39:49,203 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:49,513 WARN  L193               SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-21 15:39:49,514 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:39:49,518 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:49,535 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 15:39:49,536 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:49,537 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 15:39:49,537 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:49,538 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 15:39:49,539 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:49,552 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 15:39:49,553 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:49,565 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2020-08-21 15:39:49,567 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:49,584 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32
[2020-08-21 15:39:49,585 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:49,612 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41
[2020-08-21 15:39:49,619 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:49,640 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:39:49,641 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:49,643 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:39:49,643 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:49,661 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-21 15:39:49,664 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:49,670 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 15:39:49,672 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:49,682 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 15:39:49,683 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:49,685 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 15:39:49,685 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:49,687 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16
[2020-08-21 15:39:49,688 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:49,691 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2020-08-21 15:39:49,693 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:49,695 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 15:39:49,698 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:49,706 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102
[2020-08-21 15:39:49,708 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:49,757 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:39:49,758 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:49,778 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111
[2020-08-21 15:39:49,779 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:49,780 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116
[2020-08-21 15:39:49,786 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:49,791 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 15:39:49,793 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:49,795 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 15:39:49,796 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:49,798 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2020-08-21 15:39:49,799 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:49,800 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 15:39:49,801 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:49,803 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144
[2020-08-21 15:39:49,805 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:49,806 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150
[2020-08-21 15:39:49,807 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:49,864 INFO  L134       CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2020-08-21 15:39:49,865 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903239007]
[2020-08-21 15:39:49,866 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-08-21 15:39:49,866 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16
[2020-08-21 15:39:49,867 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075580660]
[2020-08-21 15:39:49,867 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 16 states
[2020-08-21 15:39:49,868 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 15:39:49,868 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2020-08-21 15:39:49,868 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240
[2020-08-21 15:39:49,868 INFO  L87              Difference]: Start difference. First operand 1606 states and 1936 transitions. Second operand 16 states.
[2020-08-21 15:39:50,628 WARN  L193               SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 192
[2020-08-21 15:39:50,978 WARN  L193               SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 195
[2020-08-21 15:39:51,234 WARN  L193               SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 195
[2020-08-21 15:39:51,475 WARN  L193               SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 195
[2020-08-21 15:39:52,155 WARN  L193               SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-21 15:39:52,456 WARN  L193               SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-21 15:39:52,833 WARN  L193               SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 194
[2020-08-21 15:39:53,153 WARN  L193               SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 194
[2020-08-21 15:39:54,250 WARN  L193               SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-21 15:39:54,919 WARN  L193               SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-21 15:39:55,196 WARN  L193               SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-21 15:39:55,504 WARN  L193               SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192
[2020-08-21 15:39:56,072 WARN  L193               SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-08-21 15:39:56,459 WARN  L193               SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192
[2020-08-21 15:39:56,822 WARN  L193               SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 194
[2020-08-21 15:39:57,580 WARN  L193               SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192
[2020-08-21 15:39:57,892 WARN  L193               SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 194
[2020-08-21 15:39:58,693 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 15:39:58,693 INFO  L93              Difference]: Finished difference Result 3483 states and 4326 transitions.
[2020-08-21 15:39:58,693 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. 
[2020-08-21 15:39:58,694 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states. Word has length 159
[2020-08-21 15:39:58,694 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 15:39:58,706 INFO  L225             Difference]: With dead ends: 3483
[2020-08-21 15:39:58,706 INFO  L226             Difference]: Without dead ends: 2085
[2020-08-21 15:39:58,712 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=589, Invalid=2167, Unknown=0, NotChecked=0, Total=2756
[2020-08-21 15:39:58,715 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2085 states.
[2020-08-21 15:39:59,113 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2085 to 1893.
[2020-08-21 15:39:59,113 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1893 states.
[2020-08-21 15:39:59,123 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 2238 transitions.
[2020-08-21 15:39:59,124 INFO  L78                 Accepts]: Start accepts. Automaton has 1893 states and 2238 transitions. Word has length 159
[2020-08-21 15:39:59,125 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 15:39:59,125 INFO  L479      AbstractCegarLoop]: Abstraction has 1893 states and 2238 transitions.
[2020-08-21 15:39:59,125 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 16 states.
[2020-08-21 15:39:59,125 INFO  L276                IsEmpty]: Start isEmpty. Operand 1893 states and 2238 transitions.
[2020-08-21 15:39:59,133 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 282
[2020-08-21 15:39:59,133 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 15:39:59,134 INFO  L422         BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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]
[2020-08-21 15:39:59,134 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2020-08-21 15:39:59,134 INFO  L427      AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 15:39:59,134 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 15:39:59,135 INFO  L82        PathProgramCache]: Analyzing trace with hash -1275093309, now seen corresponding path program 1 times
[2020-08-21 15:39:59,135 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 15:39:59,135 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237496489]
[2020-08-21 15:39:59,135 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 15:39:59,195 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,458 WARN  L193               SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-21 15:39:59,459 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:39:59,463 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,476 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 15:39:59,477 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,478 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 15:39:59,479 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,479 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 15:39:59,480 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,481 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 15:39:59,482 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,490 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2020-08-21 15:39:59,491 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,504 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32
[2020-08-21 15:39:59,505 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,521 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41
[2020-08-21 15:39:59,525 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,540 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:39:59,541 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,543 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:39:59,543 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,558 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-21 15:39:59,560 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,568 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 15:39:59,569 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,571 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 15:39:59,577 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,581 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 15:39:59,582 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,583 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16
[2020-08-21 15:39:59,584 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,587 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2020-08-21 15:39:59,589 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,690 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 15:39:59,692 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,716 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101
[2020-08-21 15:39:59,721 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,763 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:39:59,764 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,766 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:39:59,766 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,767 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 15:39:59,768 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,770 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2020-08-21 15:39:59,772 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,774 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 15:39:59,775 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,776 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 15:39:59,777 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,778 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2020-08-21 15:39:59,780 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,781 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 15:39:59,782 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,784 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2020-08-21 15:39:59,787 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,847 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 15:39:59,848 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,861 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163
[2020-08-21 15:39:59,864 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,873 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:39:59,874 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,875 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:39:59,876 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,877 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 15:39:59,878 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,879 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2020-08-21 15:39:59,881 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,883 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 15:39:59,884 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,886 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 15:39:59,887 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,888 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2020-08-21 15:39:59,890 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,892 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2020-08-21 15:39:59,892 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,893 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 15:39:59,894 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,954 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216
[2020-08-21 15:39:59,956 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,957 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226
[2020-08-21 15:39:59,958 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,959 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:39:59,959 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,959 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236
[2020-08-21 15:39:59,960 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,963 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 15:39:59,964 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,965 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 15:39:59,966 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,967 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 15:39:59,967 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,970 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16
[2020-08-21 15:39:59,971 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,974 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266
[2020-08-21 15:39:59,974 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:39:59,975 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272
[2020-08-21 15:39:59,976 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:00,065 INFO  L134       CoverageAnalysis]: Checked inductivity of 274 backedges. 84 proven. 29 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked.
[2020-08-21 15:40:00,066 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237496489]
[2020-08-21 15:40:00,066 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-08-21 15:40:00,066 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15
[2020-08-21 15:40:00,066 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550412665]
[2020-08-21 15:40:00,068 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-08-21 15:40:00,068 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 15:40:00,069 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-08-21 15:40:00,069 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210
[2020-08-21 15:40:00,069 INFO  L87              Difference]: Start difference. First operand 1893 states and 2238 transitions. Second operand 15 states.
[2020-08-21 15:40:01,333 WARN  L193               SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190
[2020-08-21 15:40:01,627 WARN  L193               SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 192
[2020-08-21 15:40:01,892 WARN  L193               SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192
[2020-08-21 15:40:02,160 WARN  L193               SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-21 15:40:03,154 WARN  L193               SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 192
[2020-08-21 15:40:04,931 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 15:40:04,932 INFO  L93              Difference]: Finished difference Result 5185 states and 6381 transitions.
[2020-08-21 15:40:04,933 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. 
[2020-08-21 15:40:04,933 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 281
[2020-08-21 15:40:04,934 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 15:40:04,951 INFO  L225             Difference]: With dead ends: 5185
[2020-08-21 15:40:04,951 INFO  L226             Difference]: Without dead ends: 3002
[2020-08-21 15:40:04,958 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 99 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992
[2020-08-21 15:40:04,961 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3002 states.
[2020-08-21 15:40:05,454 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3002 to 2604.
[2020-08-21 15:40:05,454 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2604 states.
[2020-08-21 15:40:05,464 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2604 states to 2604 states and 3157 transitions.
[2020-08-21 15:40:05,466 INFO  L78                 Accepts]: Start accepts. Automaton has 2604 states and 3157 transitions. Word has length 281
[2020-08-21 15:40:05,466 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 15:40:05,466 INFO  L479      AbstractCegarLoop]: Abstraction has 2604 states and 3157 transitions.
[2020-08-21 15:40:05,467 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-08-21 15:40:05,467 INFO  L276                IsEmpty]: Start isEmpty. Operand 2604 states and 3157 transitions.
[2020-08-21 15:40:05,478 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 288
[2020-08-21 15:40:05,478 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 15:40:05,478 INFO  L422         BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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]
[2020-08-21 15:40:05,479 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2020-08-21 15:40:05,479 INFO  L427      AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 15:40:05,479 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 15:40:05,479 INFO  L82        PathProgramCache]: Analyzing trace with hash -1375191224, now seen corresponding path program 1 times
[2020-08-21 15:40:05,479 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 15:40:05,480 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117795427]
[2020-08-21 15:40:05,480 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 15:40:05,524 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:05,805 WARN  L193               SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-21 15:40:05,806 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:40:05,810 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:05,825 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 15:40:05,826 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:05,827 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 15:40:05,827 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:05,828 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 15:40:05,828 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:05,839 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 15:40:05,839 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:05,849 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2020-08-21 15:40:05,850 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:05,860 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32
[2020-08-21 15:40:05,861 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:05,877 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41
[2020-08-21 15:40:05,880 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:05,895 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:40:05,895 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:05,897 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:40:05,897 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:05,908 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-21 15:40:05,910 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:05,913 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 15:40:05,915 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:05,918 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 15:40:05,919 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:05,922 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 15:40:05,923 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:05,924 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16
[2020-08-21 15:40:05,924 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:05,927 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2020-08-21 15:40:05,929 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:05,930 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 15:40:05,931 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:05,933 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101
[2020-08-21 15:40:05,937 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:05,941 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:40:05,942 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:05,943 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:40:05,943 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:05,944 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 15:40:05,945 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:05,946 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2020-08-21 15:40:05,948 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:05,950 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 15:40:05,951 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:05,952 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 15:40:05,953 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:05,954 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2020-08-21 15:40:05,954 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:05,956 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 15:40:05,956 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:05,957 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2020-08-21 15:40:05,963 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:06,023 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 15:40:06,024 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:06,025 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-08-21 15:40:06,026 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:06,051 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169
[2020-08-21 15:40:06,056 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:06,061 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:40:06,062 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:06,063 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:40:06,063 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:06,064 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 15:40:06,065 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:06,066 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2020-08-21 15:40:06,068 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:06,070 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 15:40:06,071 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:06,073 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 15:40:06,073 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:06,075 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2020-08-21 15:40:06,076 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:06,077 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2020-08-21 15:40:06,078 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:06,080 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 15:40:06,080 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:06,082 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222
[2020-08-21 15:40:06,083 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:06,083 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232
[2020-08-21 15:40:06,084 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:06,085 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:40:06,086 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:06,087 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242
[2020-08-21 15:40:06,089 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:06,092 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 15:40:06,093 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:06,096 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 15:40:06,097 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:06,099 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-21 15:40:06,100 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:06,101 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16
[2020-08-21 15:40:06,102 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:06,104 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272
[2020-08-21 15:40:06,104 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:06,105 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278
[2020-08-21 15:40:06,106 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:40:06,234 INFO  L134       CoverageAnalysis]: Checked inductivity of 292 backedges. 91 proven. 36 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked.
[2020-08-21 15:40:06,239 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117795427]
[2020-08-21 15:40:06,240 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-08-21 15:40:06,240 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16
[2020-08-21 15:40:06,240 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079264841]
[2020-08-21 15:40:06,241 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 16 states
[2020-08-21 15:40:06,241 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 15:40:06,242 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2020-08-21 15:40:06,243 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240
[2020-08-21 15:40:06,243 INFO  L87              Difference]: Start difference. First operand 2604 states and 3157 transitions. Second operand 16 states.
[2020-08-21 15:40:06,957 WARN  L193               SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-21 15:40:07,319 WARN  L193               SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 192
[2020-08-21 15:40:07,576 WARN  L193               SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 192
[2020-08-21 15:40:07,819 WARN  L193               SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192
[2020-08-21 15:40:08,510 WARN  L193               SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-21 15:40:09,463 WARN  L193               SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-08-21 15:40:09,766 WARN  L193               SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-21 15:40:10,045 WARN  L193               SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-21 15:40:10,583 WARN  L193               SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-21 15:40:11,386 WARN  L193               SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-21 15:40:11,636 WARN  L193               SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-08-21 15:40:12,567 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 15:40:12,567 INFO  L93              Difference]: Finished difference Result 4984 states and 6131 transitions.
[2020-08-21 15:40:12,567 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. 
[2020-08-21 15:40:12,568 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states. Word has length 287
[2020-08-21 15:40:12,568 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 15:40:12,583 INFO  L225             Difference]: With dead ends: 4984
[2020-08-21 15:40:12,583 INFO  L226             Difference]: Without dead ends: 2611
[2020-08-21 15:40:12,592 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482
[2020-08-21 15:40:12,595 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2611 states.
[2020-08-21 15:40:13,197 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2535.
[2020-08-21 15:40:13,198 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2535 states.
[2020-08-21 15:40:13,205 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2535 states to 2535 states and 3048 transitions.
[2020-08-21 15:40:13,206 INFO  L78                 Accepts]: Start accepts. Automaton has 2535 states and 3048 transitions. Word has length 287
[2020-08-21 15:40:13,206 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 15:40:13,206 INFO  L479      AbstractCegarLoop]: Abstraction has 2535 states and 3048 transitions.
[2020-08-21 15:40:13,207 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 16 states.
[2020-08-21 15:40:13,207 INFO  L276                IsEmpty]: Start isEmpty. Operand 2535 states and 3048 transitions.
[2020-08-21 15:40:13,219 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 285
[2020-08-21 15:40:13,219 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 15:40:13,219 INFO  L422         BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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]
[2020-08-21 15:40:13,220 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2020-08-21 15:40:13,220 INFO  L427      AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 15:40:13,220 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 15:40:13,220 INFO  L82        PathProgramCache]: Analyzing trace with hash -344117058, now seen corresponding path program 1 times
[2020-08-21 15:40:13,220 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 15:40:13,221 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271760401]
[2020-08-21 15:40:13,221 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 15:40:13,272 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat