/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label38.c


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


This is Ultimate 0.2.0-0f64333
[2020-10-28 10:47:58,879 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-28 10:47:58,883 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-28 10:47:58,948 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-28 10:47:58,948 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-28 10:47:58,956 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-28 10:47:58,960 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-28 10:47:58,965 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-28 10:47:58,968 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-28 10:47:58,976 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-28 10:47:58,977 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-28 10:47:58,979 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-28 10:47:58,980 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-28 10:47:58,983 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-28 10:47:58,985 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-28 10:47:58,987 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-28 10:47:58,988 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-28 10:47:58,992 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-28 10:47:59,000 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-28 10:47:59,005 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-28 10:47:59,010 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-28 10:47:59,012 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-28 10:47:59,013 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-28 10:47:59,016 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-28 10:47:59,036 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-28 10:47:59,036 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-28 10:47:59,037 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-28 10:47:59,039 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-28 10:47:59,039 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-28 10:47:59,040 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-28 10:47:59,041 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-28 10:47:59,042 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-28 10:47:59,044 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-28 10:47:59,045 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-28 10:47:59,046 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-28 10:47:59,046 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-28 10:47:59,047 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-28 10:47:59,047 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-28 10:47:59,048 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-28 10:47:59,049 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-28 10:47:59,050 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-28 10:47:59,051 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
[2020-10-28 10:47:59,101 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-28 10:47:59,101 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-28 10:47:59,106 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-28 10:47:59,107 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-28 10:47:59,107 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-28 10:47:59,107 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-28 10:47:59,107 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-28 10:47:59,108 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-28 10:47:59,108 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-28 10:47:59,108 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-28 10:47:59,109 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-28 10:47:59,110 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-28 10:47:59,110 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-28 10:47:59,110 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-28 10:47:59,110 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-28 10:47:59,110 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-28 10:47:59,111 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-28 10:47:59,111 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-28 10:47:59,111 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-28 10:47:59,111 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-28 10:47:59,112 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-28 10:47:59,112 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-28 10:47:59,112 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-28 10:47:59,112 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-28 10:47:59,112 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-28 10:47:59,113 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-28 10:47:59,113 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-28 10:47:59,113 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-28 10:47:59,113 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-28 10:47:59,113 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true;
[2020-10-28 10:47:59,482 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-28 10:47:59,535 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-28 10:47:59,539 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-28 10:47:59,540 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-28 10:47:59,541 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-28 10:47:59,542 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label38.c
[2020-10-28 10:47:59,618 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/38a9113ec/be846fadea7c45fbb9ab4dd24e36e7dc/FLAGf359980ed
[2020-10-28 10:48:01,148 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-28 10:48:01,149 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label38.c
[2020-10-28 10:48:01,214 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/38a9113ec/be846fadea7c45fbb9ab4dd24e36e7dc/FLAGf359980ed
[2020-10-28 10:48:01,711 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/38a9113ec/be846fadea7c45fbb9ab4dd24e36e7dc
[2020-10-28 10:48:01,715 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-28 10:48:01,723 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-28 10:48:01,728 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-28 10:48:01,728 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-28 10:48:01,732 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-28 10:48:01,733 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:48:01" (1/1) ...
[2020-10-28 10:48:01,738 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74421ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:01, skipping insertion in model container
[2020-10-28 10:48:01,738 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:48:01" (1/1) ...
[2020-10-28 10:48:01,747 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-28 10:48:02,006 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-28 10:48:04,529 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-28 10:48:04,543 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-28 10:48:05,851 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-28 10:48:05,932 INFO  L208         MainTranslator]: Completed translation
[2020-10-28 10:48:05,934 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:05 WrapperNode
[2020-10-28 10:48:05,934 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-28 10:48:05,936 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-28 10:48:05,936 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-28 10:48:05,936 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-28 10:48:05,952 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:05" (1/1) ...
[2020-10-28 10:48:05,955 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:05" (1/1) ...
[2020-10-28 10:48:06,087 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:05" (1/1) ...
[2020-10-28 10:48:06,088 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:05" (1/1) ...
[2020-10-28 10:48:06,425 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:05" (1/1) ...
[2020-10-28 10:48:06,496 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:05" (1/1) ...
[2020-10-28 10:48:06,638 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:05" (1/1) ...
[2020-10-28 10:48:06,714 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-28 10:48:06,716 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-28 10:48:06,716 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-28 10:48:06,716 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-28 10:48:06,717 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:05" (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
[2020-10-28 10:48:06,803 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-28 10:48:06,803 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-28 10:48:06,804 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2020-10-28 10:48:06,804 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-28 10:48:06,804 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-28 10:48:06,804 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-28 10:48:06,805 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-28 10:48:06,805 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-28 10:48:06,805 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-28 10:48:06,805 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-28 10:48:06,806 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-28 10:48:06,806 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-28 10:48:06,806 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-28 10:48:06,806 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-28 10:48:06,807 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-28 10:48:06,807 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-28 10:48:06,808 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-28 10:48:06,808 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-28 10:48:06,808 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-28 10:48:06,809 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-28 10:48:06,809 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-10-28 10:48:06,809 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-28 10:48:06,809 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2020-10-28 10:48:06,809 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-28 10:48:06,809 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-28 10:48:06,810 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-28 10:48:06,810 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-28 10:48:06,810 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-28 10:48:06,810 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-28 10:48:06,810 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-28 10:48:06,810 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-10-28 10:48:06,810 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-10-28 10:48:06,811 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-28 10:48:15,883 INFO  L293             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-28 10:48:15,884 INFO  L298             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-28 10:48:15,890 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:48:15 BoogieIcfgContainer
[2020-10-28 10:48:15,891 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-28 10:48:15,893 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-28 10:48:15,893 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-28 10:48:15,897 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-28 10:48:15,898 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:48:01" (1/3) ...
[2020-10-28 10:48:15,899 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6340e27a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:48:15, skipping insertion in model container
[2020-10-28 10:48:15,899 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:05" (2/3) ...
[2020-10-28 10:48:15,900 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6340e27a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:48:15, skipping insertion in model container
[2020-10-28 10:48:15,900 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:48:15" (3/3) ...
[2020-10-28 10:48:15,902 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem05_label38.c
[2020-10-28 10:48:15,916 INFO  L164   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-28 10:48:15,923 INFO  L176   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-28 10:48:15,938 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-28 10:48:15,993 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2020-10-28 10:48:15,993 INFO  L378      AbstractCegarLoop]: Hoare is true
[2020-10-28 10:48:15,993 INFO  L379      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-28 10:48:15,993 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-28 10:48:15,993 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-28 10:48:15,993 INFO  L382      AbstractCegarLoop]: Difference is false
[2020-10-28 10:48:15,994 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-28 10:48:15,994 INFO  L387      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-28 10:48:16,058 INFO  L276                IsEmpty]: Start isEmpty. Operand 2226 states.
[2020-10-28 10:48:16,199 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1655
[2020-10-28 10:48:16,200 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:48:16,203 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-28 10:48:16,203 INFO  L429      AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:48:16,213 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:48:16,215 INFO  L82        PathProgramCache]: Analyzing trace with hash 182961567, now seen corresponding path program 1 times
[2020-10-28 10:48:16,225 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:48:16,225 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406628384]
[2020-10-28 10:48:16,227 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:48:17,228 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:48:17,694 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:48:22,280 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:48:22,280 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1678
[2020-10-28 10:48:22,280 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:48:22,281 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5041
[2020-10-28 10:48:22,283 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:48:22,283 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:48:22,283 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-28 10:48:22,283 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-28 10:48:22,284 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1669
[2020-10-28 10:48:22,284 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-28 10:48:24,136 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:48:24,153 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:48:24,160 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:48:24,193 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:48:24,193 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:48:24,194 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:48:24,195 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 39
[2020-10-28 10:48:24,195 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:48:24,195 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:48:24,195 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:48:24,195 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:48:24,196 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-28 10:48:24,196 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:48:27,428 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-28 10:48:27,429 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406628384]
[2020-10-28 10:48:27,431 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-28 10:48:27,432 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-10-28 10:48:27,432 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173709827]
[2020-10-28 10:48:27,442 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-28 10:48:27,442 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:48:27,456 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-28 10:48:27,457 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-28 10:48:27,459 INFO  L87              Difference]: Start difference. First operand 2226 states. Second operand 4 states.
[2020-10-28 10:48:48,230 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-28 10:48:48,230 INFO  L93              Difference]: Finished difference Result 6315 states and 11856 transitions.
[2020-10-28 10:48:48,231 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-28 10:48:48,232 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1654
[2020-10-28 10:48:48,245 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-28 10:48:48,293 INFO  L225             Difference]: With dead ends: 6315
[2020-10-28 10:48:48,293 INFO  L226             Difference]: Without dead ends: 4025
[2020-10-28 10:48:48,306 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-10-28 10:48:48,336 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4025 states.
[2020-10-28 10:48:48,537 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4025 to 3998.
[2020-10-28 10:48:48,539 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3998 states.
[2020-10-28 10:48:48,566 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3998 states to 3998 states and 6428 transitions.
[2020-10-28 10:48:48,569 INFO  L78                 Accepts]: Start accepts. Automaton has 3998 states and 6428 transitions. Word has length 1654
[2020-10-28 10:48:48,575 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-28 10:48:48,576 INFO  L481      AbstractCegarLoop]: Abstraction has 3998 states and 6428 transitions.
[2020-10-28 10:48:48,576 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-28 10:48:48,577 INFO  L276                IsEmpty]: Start isEmpty. Operand 3998 states and 6428 transitions.
[2020-10-28 10:48:48,855 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1664
[2020-10-28 10:48:48,856 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:48:48,857 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-28 10:48:48,858 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-28 10:48:48,860 INFO  L429      AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:48:48,860 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:48:48,861 INFO  L82        PathProgramCache]: Analyzing trace with hash -265386341, now seen corresponding path program 1 times
[2020-10-28 10:48:48,862 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:48:48,862 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145155195]
[2020-10-28 10:48:48,863 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:48:49,008 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:48:49,047 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:48:51,457 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:48:54,283 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:48:54,284 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1689
[2020-10-28 10:48:54,284 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-28 10:48:54,284 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5271
[2020-10-28 10:48:54,285 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:48:54,286 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:48:54,286 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-28 10:48:54,286 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-28 10:48:54,286 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 15
[2020-10-28 10:48:54,286 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:48:54,918 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:48:54,927 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:48:54,936 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:48:54,950 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:48:54,951 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:48:54,951 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:48:54,951 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 22
[2020-10-28 10:48:54,952 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:48:54,952 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:48:54,952 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:48:54,952 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:48:54,953 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-28 10:48:54,953 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:48:54,980 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-28 10:48:54,987 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:48:54,992 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:48:55,026 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:48:55,026 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-28 10:48:55,026 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:48:55,027 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 38
[2020-10-28 10:48:55,027 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:48:55,028 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:48:55,028 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:48:55,028 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-28 10:48:55,028 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-10-28 10:48:55,028 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:48:56,325 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-28 10:48:56,326 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1145155195]
[2020-10-28 10:48:56,326 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-28 10:48:56,326 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-28 10:48:56,327 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097600982]
[2020-10-28 10:48:56,331 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-28 10:48:56,331 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:48:56,332 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-28 10:48:56,333 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-28 10:48:56,333 INFO  L87              Difference]: Start difference. First operand 3998 states and 6428 transitions. Second operand 7 states.
[2020-10-28 10:49:24,819 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-28 10:49:24,820 INFO  L93              Difference]: Finished difference Result 11887 states and 19296 transitions.
[2020-10-28 10:49:24,821 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-10-28 10:49:24,821 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1663
[2020-10-28 10:49:24,821 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-28 10:49:24,871 INFO  L225             Difference]: With dead ends: 11887
[2020-10-28 10:49:24,871 INFO  L226             Difference]: Without dead ends: 7895
[2020-10-28 10:49:24,882 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132
[2020-10-28 10:49:24,895 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7895 states.
[2020-10-28 10:49:25,084 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7895 to 7668.
[2020-10-28 10:49:25,084 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 7668 states.
[2020-10-28 10:49:25,113 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7668 states to 7668 states and 11504 transitions.
[2020-10-28 10:49:25,114 INFO  L78                 Accepts]: Start accepts. Automaton has 7668 states and 11504 transitions. Word has length 1663
[2020-10-28 10:49:25,114 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-28 10:49:25,114 INFO  L481      AbstractCegarLoop]: Abstraction has 7668 states and 11504 transitions.
[2020-10-28 10:49:25,114 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-28 10:49:25,114 INFO  L276                IsEmpty]: Start isEmpty. Operand 7668 states and 11504 transitions.
[2020-10-28 10:49:25,160 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1678
[2020-10-28 10:49:25,160 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:49:25,162 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-28 10:49:25,162 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-28 10:49:25,162 INFO  L429      AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:49:25,163 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:49:25,164 INFO  L82        PathProgramCache]: Analyzing trace with hash -829753581, now seen corresponding path program 1 times
[2020-10-28 10:49:25,164 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:49:25,164 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373558021]
[2020-10-28 10:49:25,165 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:49:25,302 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:49:25,333 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:49:25,583 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:49:30,448 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:49:30,449 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1705
[2020-10-28 10:49:30,449 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-28 10:49:30,449 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5143
[2020-10-28 10:49:30,449 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:49:30,449 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:49:30,449 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:49:30,449 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 21
[2020-10-28 10:49:30,450 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 15
[2020-10-28 10:49:30,450 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:49:31,463 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:49:31,469 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:49:31,470 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:49:31,476 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:49:31,477 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:49:31,477 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:49:31,477 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-10-28 10:49:31,477 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:49:31,477 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:49:31,478 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-28 10:49:31,478 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:49:31,478 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-28 10:49:31,478 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:49:31,503 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-28 10:49:31,510 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:49:31,512 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:49:31,526 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:49:31,527 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-10-28 10:49:31,527 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:49:31,527 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 15
[2020-10-28 10:49:31,527 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:49:31,527 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:49:31,528 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:49:31,528 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:49:31,528 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-10-28 10:49:31,528 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:49:31,535 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2020-10-28 10:49:31,543 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:49:31,546 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:49:31,570 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:49:31,571 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-10-28 10:49:31,571 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:49:31,571 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 26
[2020-10-28 10:49:31,571 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:49:31,571 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:49:31,572 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:49:31,572 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-28 10:49:31,572 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 13
[2020-10-28 10:49:31,572 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:49:32,790 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-28 10:49:32,790 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [373558021]
[2020-10-28 10:49:32,790 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-28 10:49:32,791 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-28 10:49:32,791 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754819939]
[2020-10-28 10:49:32,797 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-28 10:49:32,797 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:49:32,798 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-28 10:49:32,798 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-28 10:49:32,798 INFO  L87              Difference]: Start difference. First operand 7668 states and 11504 transitions. Second operand 7 states.
[2020-10-28 10:50:00,664 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-28 10:50:00,664 INFO  L93              Difference]: Finished difference Result 23163 states and 35635 transitions.
[2020-10-28 10:50:00,665 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-28 10:50:00,665 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1677
[2020-10-28 10:50:00,665 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-28 10:50:00,762 INFO  L225             Difference]: With dead ends: 23163
[2020-10-28 10:50:00,763 INFO  L226             Difference]: Without dead ends: 15501
[2020-10-28 10:50:00,788 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-28 10:50:00,808 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15501 states.
[2020-10-28 10:50:01,283 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15501 to 15210.
[2020-10-28 10:50:01,284 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 15210 states.
[2020-10-28 10:50:01,325 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15210 states to 15210 states and 21323 transitions.
[2020-10-28 10:50:01,325 INFO  L78                 Accepts]: Start accepts. Automaton has 15210 states and 21323 transitions. Word has length 1677
[2020-10-28 10:50:01,326 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-28 10:50:01,326 INFO  L481      AbstractCegarLoop]: Abstraction has 15210 states and 21323 transitions.
[2020-10-28 10:50:01,326 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-28 10:50:01,326 INFO  L276                IsEmpty]: Start isEmpty. Operand 15210 states and 21323 transitions.
[2020-10-28 10:50:01,396 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1695
[2020-10-28 10:50:01,396 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:50:01,397 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-28 10:50:01,398 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-28 10:50:01,398 INFO  L429      AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:50:01,399 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:50:01,399 INFO  L82        PathProgramCache]: Analyzing trace with hash -1669262738, now seen corresponding path program 1 times
[2020-10-28 10:50:01,400 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:50:01,400 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154890148]
[2020-10-28 10:50:01,400 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:50:01,578 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:50:01,609 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:50:01,871 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:50:06,670 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:50:06,671 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1720
[2020-10-28 10:50:06,671 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-28 10:50:06,671 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5089
[2020-10-28 10:50:06,671 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:50:06,671 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:50:06,672 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-28 10:50:06,672 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-28 10:50:06,672 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 46
[2020-10-28 10:50:06,672 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:50:07,175 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:50:07,181 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:50:07,185 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:50:07,200 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:50:07,201 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:50:07,201 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:50:07,201 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 19
[2020-10-28 10:50:07,201 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:50:07,202 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:50:07,202 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:50:07,202 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:50:07,202 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-28 10:50:07,202 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:50:07,225 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-28 10:50:07,241 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:50:07,252 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:50:07,321 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:50:07,321 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 41
[2020-10-28 10:50:07,322 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:50:07,322 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 79
[2020-10-28 10:50:07,322 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:50:07,322 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:50:07,322 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:50:07,322 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-28 10:50:07,323 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 41
[2020-10-28 10:50:07,323 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:50:08,645 INFO  L134       CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-28 10:50:08,645 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154890148]
[2020-10-28 10:50:08,645 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-28 10:50:08,645 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-28 10:50:08,646 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774764428]
[2020-10-28 10:50:08,648 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-28 10:50:08,648 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:50:08,648 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-28 10:50:08,649 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-28 10:50:08,649 INFO  L87              Difference]: Start difference. First operand 15210 states and 21323 transitions. Second operand 7 states.
[2020-10-28 10:50:35,361 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-28 10:50:35,362 INFO  L93              Difference]: Finished difference Result 46514 states and 68572 transitions.
[2020-10-28 10:50:35,363 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-28 10:50:35,363 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1694
[2020-10-28 10:50:35,363 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-28 10:50:35,481 INFO  L225             Difference]: With dead ends: 46514
[2020-10-28 10:50:35,482 INFO  L226             Difference]: Without dead ends: 31310
[2020-10-28 10:50:35,524 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-28 10:50:35,563 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 31310 states.
[2020-10-28 10:50:36,237 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 31310 to 30749.
[2020-10-28 10:50:36,237 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30749 states.
[2020-10-28 10:50:36,320 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30749 states to 30749 states and 40999 transitions.
[2020-10-28 10:50:36,321 INFO  L78                 Accepts]: Start accepts. Automaton has 30749 states and 40999 transitions. Word has length 1694
[2020-10-28 10:50:36,321 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-28 10:50:36,321 INFO  L481      AbstractCegarLoop]: Abstraction has 30749 states and 40999 transitions.
[2020-10-28 10:50:36,321 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-28 10:50:36,321 INFO  L276                IsEmpty]: Start isEmpty. Operand 30749 states and 40999 transitions.
[2020-10-28 10:50:36,440 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1696
[2020-10-28 10:50:36,440 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:50:36,441 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-28 10:50:36,442 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-28 10:50:36,442 INFO  L429      AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:50:36,442 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:50:36,443 INFO  L82        PathProgramCache]: Analyzing trace with hash 17440557, now seen corresponding path program 1 times
[2020-10-28 10:50:36,444 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:50:36,445 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650677665]
[2020-10-28 10:50:36,445 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:50:36,567 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:50:36,596 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:50:38,418 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:50:41,672 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:50:41,672 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1721
[2020-10-28 10:50:41,672 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-28 10:50:41,672 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5102
[2020-10-28 10:50:41,673 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:50:41,673 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:50:41,673 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-28 10:50:41,673 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-28 10:50:41,673 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 47
[2020-10-28 10:50:41,673 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:50:42,162 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:50:42,168 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:50:42,171 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:50:42,181 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:50:42,181 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:50:42,182 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:50:42,182 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 12
[2020-10-28 10:50:42,182 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:50:42,182 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:50:42,182 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:50:42,183 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:50:42,183 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-28 10:50:42,183 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:50:42,217 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-28 10:50:42,230 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:50:42,238 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:50:42,280 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:50:42,280 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 42
[2020-10-28 10:50:42,280 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:50:42,280 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 49
[2020-10-28 10:50:42,281 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:50:42,281 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:50:42,281 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:50:42,281 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-28 10:50:42,281 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 42
[2020-10-28 10:50:42,281 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:50:43,699 INFO  L134       CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-28 10:50:43,699 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650677665]
[2020-10-28 10:50:43,700 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-28 10:50:43,700 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-28 10:50:43,700 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156359314]
[2020-10-28 10:50:43,701 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-28 10:50:43,702 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:50:43,702 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-28 10:50:43,702 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2020-10-28 10:50:43,702 INFO  L87              Difference]: Start difference. First operand 30749 states and 40999 transitions. Second operand 7 states.
[2020-10-28 10:51:10,122 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-28 10:51:10,122 INFO  L93              Difference]: Finished difference Result 76383 states and 102665 transitions.
[2020-10-28 10:51:10,123 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-10-28 10:51:10,123 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1695
[2020-10-28 10:51:10,123 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-28 10:51:10,283 INFO  L225             Difference]: With dead ends: 76383
[2020-10-28 10:51:10,283 INFO  L226             Difference]: Without dead ends: 45640
[2020-10-28 10:51:10,348 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110
[2020-10-28 10:51:10,397 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 45640 states.
[2020-10-28 10:51:11,312 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 45640 to 45419.
[2020-10-28 10:51:11,313 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 45419 states.
[2020-10-28 10:51:11,418 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 45419 states to 45419 states and 56061 transitions.
[2020-10-28 10:51:11,420 INFO  L78                 Accepts]: Start accepts. Automaton has 45419 states and 56061 transitions. Word has length 1695
[2020-10-28 10:51:11,421 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-28 10:51:11,421 INFO  L481      AbstractCegarLoop]: Abstraction has 45419 states and 56061 transitions.
[2020-10-28 10:51:11,421 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-28 10:51:11,421 INFO  L276                IsEmpty]: Start isEmpty. Operand 45419 states and 56061 transitions.
[2020-10-28 10:51:11,576 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1717
[2020-10-28 10:51:11,576 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:51:11,578 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-28 10:51:11,578 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-10-28 10:51:11,578 INFO  L429      AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:51:11,579 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:51:11,579 INFO  L82        PathProgramCache]: Analyzing trace with hash 1050975535, now seen corresponding path program 1 times
[2020-10-28 10:51:11,580 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:51:11,580 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702722979]
[2020-10-28 10:51:11,580 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:51:11,711 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:51:11,742 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:51:11,937 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:51:12,775 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:51:16,721 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:51:16,721 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1744
[2020-10-28 10:51:16,721 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-28 10:51:16,721 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5006
[2020-10-28 10:51:16,721 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:51:16,722 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:51:16,722 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:51:16,722 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 32
[2020-10-28 10:51:16,722 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 43
[2020-10-28 10:51:16,722 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:51:17,124 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:51:17,127 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:51:17,129 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:51:17,135 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:51:17,136 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:51:17,136 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:51:17,136 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-10-28 10:51:17,136 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:51:17,136 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:51:17,136 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-28 10:51:17,136 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:51:17,136 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-28 10:51:17,137 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:51:17,164 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-28 10:51:17,171 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:51:17,176 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:51:17,192 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:51:17,192 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-10-28 10:51:17,193 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:51:17,193 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 20
[2020-10-28 10:51:17,193 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:51:17,193 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:51:17,193 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:51:17,193 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:51:17,193 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 17
[2020-10-28 10:51:17,193 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:51:17,205 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30
[2020-10-28 10:51:17,214 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:51:17,220 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:51:17,273 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:51:17,274 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 41
[2020-10-28 10:51:17,274 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:51:17,274 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 59
[2020-10-28 10:51:17,274 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:51:17,274 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:51:17,274 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:51:17,274 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-28 10:51:17,275 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 41
[2020-10-28 10:51:17,275 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:51:18,424 INFO  L134       CoverageAnalysis]: Checked inductivity of 78 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-28 10:51:18,424 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702722979]
[2020-10-28 10:51:18,424 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-28 10:51:18,425 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-10-28 10:51:18,425 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084422129]
[2020-10-28 10:51:18,427 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-28 10:51:18,427 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:51:18,427 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-28 10:51:18,428 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-10-28 10:51:18,428 INFO  L87              Difference]: Start difference. First operand 45419 states and 56061 transitions. Second operand 8 states.