/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=SHALLOWEST --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_label01.c


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


This is Ultimate 0.2.0-0f64333
[2020-10-26 21:10:02,226 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-26 21:10:02,231 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-26 21:10:02,290 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-26 21:10:02,290 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-26 21:10:02,296 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-26 21:10:02,299 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-26 21:10:02,304 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-26 21:10:02,308 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-26 21:10:02,313 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-26 21:10:02,315 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-26 21:10:02,316 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-26 21:10:02,317 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-26 21:10:02,320 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-26 21:10:02,322 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-26 21:10:02,324 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-26 21:10:02,326 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-26 21:10:02,329 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-26 21:10:02,336 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-26 21:10:02,372 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-26 21:10:02,384 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-26 21:10:02,390 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-26 21:10:02,391 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-26 21:10:02,394 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-26 21:10:02,406 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-26 21:10:02,406 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-26 21:10:02,406 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-26 21:10:02,410 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-26 21:10:02,410 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-26 21:10:02,411 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-26 21:10:02,412 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-26 21:10:02,413 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-26 21:10:02,415 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-26 21:10:02,416 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-26 21:10:02,417 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-26 21:10:02,417 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-26 21:10:02,418 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-26 21:10:02,418 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-26 21:10:02,419 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-26 21:10:02,420 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-26 21:10:02,420 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-26 21:10:02,428 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
[2020-10-26 21:10:02,477 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-26 21:10:02,477 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-26 21:10:02,483 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-26 21:10:02,483 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-26 21:10:02,483 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-26 21:10:02,484 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-26 21:10:02,484 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-26 21:10:02,484 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-26 21:10:02,484 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-26 21:10:02,485 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-26 21:10:02,486 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-26 21:10:02,486 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-26 21:10:02,486 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-26 21:10:02,487 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-26 21:10:02,487 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-26 21:10:02,487 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-26 21:10:02,487 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-26 21:10:02,488 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-26 21:10:02,488 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-26 21:10:02,488 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-26 21:10:02,488 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-26 21:10:02,488 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-26 21:10:02,489 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-26 21:10:02,489 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-26 21:10:02,489 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-26 21:10:02,489 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-26 21:10:02,489 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-26 21:10:02,490 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-26 21:10:02,490 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-26 21:10:02,490 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true;
[2020-10-26 21:10:02,941 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-26 21:10:02,980 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-26 21:10:02,987 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-26 21:10:02,988 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-26 21:10:02,989 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-26 21:10:02,990 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label01.c
[2020-10-26 21:10:03,062 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/85dff8c43/cab2d3871f25403f962653fb08caff3a/FLAG23c9c3386
[2020-10-26 21:10:04,255 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-26 21:10:04,255 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label01.c
[2020-10-26 21:10:04,328 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/85dff8c43/cab2d3871f25403f962653fb08caff3a/FLAG23c9c3386
[2020-10-26 21:10:04,453 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/85dff8c43/cab2d3871f25403f962653fb08caff3a
[2020-10-26 21:10:04,457 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-26 21:10:04,466 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-26 21:10:04,470 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-26 21:10:04,471 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-26 21:10:04,475 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-26 21:10:04,476 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:10:04" (1/1) ...
[2020-10-26 21:10:04,483 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@179a4352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:10:04, skipping insertion in model container
[2020-10-26 21:10:04,484 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:10:04" (1/1) ...
[2020-10-26 21:10:04,497 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-26 21:10:04,753 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-26 21:10:07,326 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-26 21:10:07,393 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-26 21:10:08,851 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-26 21:10:08,977 INFO  L208         MainTranslator]: Completed translation
[2020-10-26 21:10:08,979 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:10:08 WrapperNode
[2020-10-26 21:10:08,979 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-26 21:10:08,980 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-26 21:10:08,981 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-26 21:10:08,981 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-26 21:10:08,995 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:10:08" (1/1) ...
[2020-10-26 21:10:08,997 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:10:08" (1/1) ...
[2020-10-26 21:10:09,150 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:10:08" (1/1) ...
[2020-10-26 21:10:09,150 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:10:08" (1/1) ...
[2020-10-26 21:10:09,365 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:10:08" (1/1) ...
[2020-10-26 21:10:09,424 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:10:08" (1/1) ...
[2020-10-26 21:10:09,469 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:10:08" (1/1) ...
[2020-10-26 21:10:09,530 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-26 21:10:09,532 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-26 21:10:09,532 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-26 21:10:09,533 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-26 21:10:09,534 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:10:08" (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
[2020-10-26 21:10:09,744 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-26 21:10:09,745 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-26 21:10:09,745 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2020-10-26 21:10:09,746 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-26 21:10:09,746 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-26 21:10:09,746 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-26 21:10:09,746 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-26 21:10:09,746 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-26 21:10:09,746 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-26 21:10:09,747 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-26 21:10:09,747 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-26 21:10:09,747 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-26 21:10:09,747 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-26 21:10:09,747 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-26 21:10:09,748 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-26 21:10:09,748 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-26 21:10:09,748 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-26 21:10:09,748 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-26 21:10:09,748 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-26 21:10:09,748 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-26 21:10:09,749 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-10-26 21:10:09,749 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-26 21:10:09,749 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2020-10-26 21:10:09,749 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-26 21:10:09,749 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-26 21:10:09,749 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-26 21:10:09,750 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-26 21:10:09,750 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-26 21:10:09,750 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-26 21:10:09,750 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-26 21:10:09,750 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-10-26 21:10:09,750 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-10-26 21:10:09,751 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-26 21:10:19,743 INFO  L293             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-26 21:10:19,743 INFO  L298             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-26 21:10:19,749 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:10:19 BoogieIcfgContainer
[2020-10-26 21:10:19,749 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-26 21:10:19,751 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-26 21:10:19,752 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-26 21:10:19,755 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-26 21:10:19,755 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:10:04" (1/3) ...
[2020-10-26 21:10:19,756 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dab9e6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:10:19, skipping insertion in model container
[2020-10-26 21:10:19,757 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:10:08" (2/3) ...
[2020-10-26 21:10:19,757 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dab9e6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:10:19, skipping insertion in model container
[2020-10-26 21:10:19,757 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:10:19" (3/3) ...
[2020-10-26 21:10:19,759 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem05_label01.c
[2020-10-26 21:10:19,771 INFO  L164   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-26 21:10:19,781 INFO  L176   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-26 21:10:19,795 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-26 21:10:19,835 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2020-10-26 21:10:19,836 INFO  L378      AbstractCegarLoop]: Hoare is true
[2020-10-26 21:10:19,836 INFO  L379      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-26 21:10:19,836 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-26 21:10:19,836 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-26 21:10:19,836 INFO  L382      AbstractCegarLoop]: Difference is false
[2020-10-26 21:10:19,836 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-26 21:10:19,836 INFO  L387      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-26 21:10:19,890 INFO  L276                IsEmpty]: Start isEmpty. Operand 2226 states.
[2020-10-26 21:10:20,025 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1666
[2020-10-26 21:10:20,025 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-26 21:10:20,028 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-26 21:10:20,029 INFO  L429      AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-26 21:10:20,037 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-26 21:10:20,039 INFO  L82        PathProgramCache]: Analyzing trace with hash 2019755065, now seen corresponding path program 1 times
[2020-10-26 21:10:20,050 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-26 21:10:20,051 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703405869]
[2020-10-26 21:10:20,052 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-26 21:10:21,172 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-26 21:10:21,718 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-26 21:10:26,262 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-26 21:10:26,263 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1689
[2020-10-26 21:10:26,263 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-26 21:10:26,264 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5080
[2020-10-26 21:10:26,266 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-26 21:10:26,266 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-26 21:10:26,266 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-26 21:10:26,266 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1680
[2020-10-26 21:10:26,267 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-10-26 21:10:28,330 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-26 21:10:28,346 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-26 21:10:28,352 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-26 21:10:28,384 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-26 21:10:28,386 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-26 21:10:28,386 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-26 21:10:28,386 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 37
[2020-10-26 21:10:28,386 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-26 21:10:28,387 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-26 21:10:28,387 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-26 21:10:28,387 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-26 21:10:28,387 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-26 21:10:31,104 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-26 21:10:31,105 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703405869]
[2020-10-26 21:10:31,107 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-26 21:10:31,108 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-10-26 21:10:31,109 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037009461]
[2020-10-26 21:10:31,120 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-26 21:10:31,121 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-26 21:10:31,136 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-26 21:10:31,137 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-26 21:10:31,139 INFO  L87              Difference]: Start difference. First operand 2226 states. Second operand 4 states.
[2020-10-26 21:10:54,582 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-26 21:10:54,582 INFO  L93              Difference]: Finished difference Result 6316 states and 11857 transitions.
[2020-10-26 21:10:54,583 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-26 21:10:54,585 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1665
[2020-10-26 21:10:54,595 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-26 21:10:54,647 INFO  L225             Difference]: With dead ends: 6316
[2020-10-26 21:10:54,647 INFO  L226             Difference]: Without dead ends: 4026
[2020-10-26 21:10:54,660 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
[2020-10-26 21:10:54,687 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4026 states.
[2020-10-26 21:10:54,865 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 3997.
[2020-10-26 21:10:54,866 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3997 states.
[2020-10-26 21:10:54,889 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3997 states to 3997 states and 6428 transitions.
[2020-10-26 21:10:54,891 INFO  L78                 Accepts]: Start accepts. Automaton has 3997 states and 6428 transitions. Word has length 1665
[2020-10-26 21:10:54,896 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-26 21:10:54,896 INFO  L481      AbstractCegarLoop]: Abstraction has 3997 states and 6428 transitions.
[2020-10-26 21:10:54,896 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-26 21:10:54,896 INFO  L276                IsEmpty]: Start isEmpty. Operand 3997 states and 6428 transitions.
[2020-10-26 21:10:55,032 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1675
[2020-10-26 21:10:55,033 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-26 21:10:55,034 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-26 21:10:55,035 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-26 21:10:55,035 INFO  L429      AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-26 21:10:55,037 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-26 21:10:55,038 INFO  L82        PathProgramCache]: Analyzing trace with hash 2051214781, now seen corresponding path program 1 times
[2020-10-26 21:10:55,040 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-26 21:10:55,040 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532180645]
[2020-10-26 21:10:55,041 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-26 21:10:55,197 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-26 21:10:55,226 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-26 21:10:58,991 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-26 21:10:58,992 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1700
[2020-10-26 21:10:58,993 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-26 21:10:58,996 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3791
[2020-10-26 21:10:58,996 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-26 21:10:58,996 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-26 21:10:58,997 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-26 21:10:58,997 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 15
[2020-10-26 21:10:58,997 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-26 21:11:00,032 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-26 21:11:00,040 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-26 21:11:00,043 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-26 21:11:00,066 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-26 21:11:00,066 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-26 21:11:00,072 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-26 21:11:00,072 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 25
[2020-10-26 21:11:00,072 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-26 21:11:00,073 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-26 21:11:00,073 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-26 21:11:00,073 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-26 21:11:00,074 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-26 21:11:00,101 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-26 21:11:00,105 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-26 21:11:00,107 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-26 21:11:00,127 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-26 21:11:00,128 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-26 21:11:00,128 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-26 21:11:00,128 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 22
[2020-10-26 21:11:00,128 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-26 21:11:00,128 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-26 21:11:00,129 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-26 21:11:00,129 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-10-26 21:11:00,129 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-26 21:11:01,457 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-26 21:11:01,457 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532180645]
[2020-10-26 21:11:01,457 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-26 21:11:01,458 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-26 21:11:01,458 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109702469]
[2020-10-26 21:11:01,462 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-26 21:11:01,462 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-26 21:11:01,463 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-26 21:11:01,463 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-26 21:11:01,463 INFO  L87              Difference]: Start difference. First operand 3997 states and 6428 transitions. Second operand 7 states.
[2020-10-26 21:11:32,564 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-26 21:11:32,564 INFO  L93              Difference]: Finished difference Result 11925 states and 19334 transitions.
[2020-10-26 21:11:32,566 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-26 21:11:32,566 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1674
[2020-10-26 21:11:32,567 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-26 21:11:32,613 INFO  L225             Difference]: With dead ends: 11925
[2020-10-26 21:11:32,613 INFO  L226             Difference]: Without dead ends: 7934
[2020-10-26 21:11:32,626 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-26 21:11:32,638 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7934 states.
[2020-10-26 21:11:32,837 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7934 to 7713.
[2020-10-26 21:11:32,837 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 7713 states.
[2020-10-26 21:11:32,868 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7713 states to 7713 states and 11560 transitions.
[2020-10-26 21:11:32,868 INFO  L78                 Accepts]: Start accepts. Automaton has 7713 states and 11560 transitions. Word has length 1674
[2020-10-26 21:11:32,869 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-26 21:11:32,869 INFO  L481      AbstractCegarLoop]: Abstraction has 7713 states and 11560 transitions.
[2020-10-26 21:11:32,869 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-26 21:11:32,869 INFO  L276                IsEmpty]: Start isEmpty. Operand 7713 states and 11560 transitions.
[2020-10-26 21:11:32,917 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1689
[2020-10-26 21:11:32,918 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-26 21:11:32,919 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-26 21:11:32,920 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-26 21:11:32,920 INFO  L429      AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-26 21:11:32,921 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-26 21:11:32,921 INFO  L82        PathProgramCache]: Analyzing trace with hash -1643765179, now seen corresponding path program 1 times
[2020-10-26 21:11:32,922 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-26 21:11:32,922 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073022412]
[2020-10-26 21:11:32,923 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-26 21:11:33,077 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-26 21:11:33,114 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-26 21:11:33,417 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-26 21:11:34,282 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-26 21:11:38,275 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-26 21:11:38,275 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1716
[2020-10-26 21:11:38,275 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-26 21:11:38,275 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5193
[2020-10-26 21:11:38,278 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-26 21:11:38,278 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-26 21:11:38,279 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-26 21:11:38,279 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 17
[2020-10-26 21:11:38,279 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-26 21:11:38,935 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-26 21:11:38,940 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-26 21:11:38,943 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-26 21:11:38,971 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-26 21:11:38,971 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-26 21:11:38,971 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-26 21:11:38,971 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 29
[2020-10-26 21:11:38,971 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-26 21:11:38,971 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-26 21:11:38,972 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-26 21:11:38,972 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-26 21:11:38,972 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-26 21:11:39,002 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-26 21:11:39,008 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-26 21:11:39,011 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-26 21:11:39,033 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-26 21:11:39,033 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-10-26 21:11:39,033 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-26 21:11:39,034 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 24
[2020-10-26 21:11:39,034 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-26 21:11:39,034 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-26 21:11:39,034 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-26 21:11:39,034 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 12
[2020-10-26 21:11:39,035 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-26 21:11:39,068 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2020-10-26 21:11:39,071 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-26 21:11:39,073 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-26 21:11:39,078 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-26 21:11:39,079 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-10-26 21:11:39,079 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-26 21:11:39,079 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-10-26 21:11:39,079 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-26 21:11:39,079 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-26 21:11:39,079 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 10
[2020-10-26 21:11:39,080 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-26 21:11:39,080 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-26 21:11:40,411 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2020-10-26 21:11:40,417 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073022412]
[2020-10-26 21:11:40,418 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-26 21:11:40,419 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-10-26 21:11:40,419 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818690412]
[2020-10-26 21:11:40,422 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-26 21:11:40,422 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-26 21:11:40,422 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-26 21:11:40,425 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-10-26 21:11:40,426 INFO  L87              Difference]: Start difference. First operand 7713 states and 11560 transitions. Second operand 8 states.
[2020-10-26 21:12:41,178 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-26 21:12:41,179 INFO  L93              Difference]: Finished difference Result 37589 states and 59941 transitions.
[2020-10-26 21:12:41,183 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-10-26 21:12:41,183 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 1688
[2020-10-26 21:12:41,183 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-26 21:12:41,375 INFO  L225             Difference]: With dead ends: 37589
[2020-10-26 21:12:41,375 INFO  L226             Difference]: Without dead ends: 29882
[2020-10-26 21:12:41,417 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240
[2020-10-26 21:12:41,461 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 29882 states.
[2020-10-26 21:12:42,207 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 29882 to 29791.
[2020-10-26 21:12:42,207 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 29791 states.
[2020-10-26 21:12:42,476 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29791 states to 29791 states and 40514 transitions.
[2020-10-26 21:12:42,478 INFO  L78                 Accepts]: Start accepts. Automaton has 29791 states and 40514 transitions. Word has length 1688
[2020-10-26 21:12:42,479 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-26 21:12:42,479 INFO  L481      AbstractCegarLoop]: Abstraction has 29791 states and 40514 transitions.
[2020-10-26 21:12:42,479 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-26 21:12:42,480 INFO  L276                IsEmpty]: Start isEmpty. Operand 29791 states and 40514 transitions.
[2020-10-26 21:12:42,610 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1700
[2020-10-26 21:12:42,611 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-26 21:12:42,612 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-26 21:12:42,613 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-26 21:12:42,613 INFO  L429      AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-26 21:12:42,614 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-26 21:12:42,615 INFO  L82        PathProgramCache]: Analyzing trace with hash -346350756, now seen corresponding path program 1 times
[2020-10-26 21:12:42,615 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-26 21:12:42,616 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482302306]
[2020-10-26 21:12:42,616 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-26 21:12:42,744 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-26 21:12:42,776 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-26 21:12:42,844 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-26 21:12:43,111 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-26 21:12:47,902 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-26 21:12:47,903 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1727
[2020-10-26 21:12:47,903 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-26 21:12:47,903 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5152
[2020-10-26 21:12:47,903 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-26 21:12:47,903 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-10-26 21:12:47,904 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-26 21:12:47,904 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 42
[2020-10-26 21:12:47,904 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-26 21:12:48,512 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-26 21:12:48,517 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-26 21:12:48,525 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-26 21:12:48,535 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-26 21:12:48,535 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-26 21:12:48,535 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-26 21:12:48,535 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 16
[2020-10-26 21:12:48,535 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-26 21:12:48,535 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-26 21:12:48,536 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-26 21:12:48,536 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-26 21:12:48,536 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-26 21:12:48,566 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-26 21:12:48,571 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-26 21:12:48,575 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-26 21:12:48,589 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-26 21:12:48,608 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-26 21:12:48,608 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-10-26 21:12:48,609 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-26 21:12:48,609 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 36
[2020-10-26 21:12:48,609 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-26 21:12:48,609 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-26 21:12:48,609 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-26 21:12:48,609 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 23
[2020-10-26 21:12:48,609 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-26 21:12:48,638 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30
[2020-10-26 21:12:48,641 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-26 21:12:48,644 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-26 21:12:48,662 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-26 21:12:48,662 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-10-26 21:12:48,663 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-26 21:12:48,663 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 20
[2020-10-26 21:12:48,663 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-26 21:12:48,663 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-26 21:12:48,663 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-26 21:12:48,663 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 13
[2020-10-26 21:12:48,663 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-26 21:12:50,034 INFO  L134       CoverageAnalysis]: Checked inductivity of 40 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2020-10-26 21:12:50,034 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482302306]
[2020-10-26 21:12:50,034 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-26 21:12:50,035 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-26 21:12:50,035 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849077074]
[2020-10-26 21:12:50,037 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-26 21:12:50,037 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-26 21:12:50,038 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-26 21:12:50,038 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-10-26 21:12:50,038 INFO  L87              Difference]: Start difference. First operand 29791 states and 40514 transitions. Second operand 8 states.
[2020-10-26 21:13:36,138 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-26 21:13:36,138 INFO  L93              Difference]: Finished difference Result 87179 states and 131060 transitions.
[2020-10-26 21:13:36,140 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-10-26 21:13:36,140 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 1699
[2020-10-26 21:13:36,140 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-26 21:13:36,417 INFO  L225             Difference]: With dead ends: 87179
[2020-10-26 21:13:36,417 INFO  L226             Difference]: Without dead ends: 57394
[2020-10-26 21:13:36,534 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240
[2020-10-26 21:13:36,609 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 57394 states.
[2020-10-26 21:13:38,224 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 57394 to 57304.
[2020-10-26 21:13:38,225 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 57304 states.
[2020-10-26 21:13:38,428 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 57304 states to 57304 states and 81463 transitions.
[2020-10-26 21:13:38,431 INFO  L78                 Accepts]: Start accepts. Automaton has 57304 states and 81463 transitions. Word has length 1699
[2020-10-26 21:13:38,431 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-26 21:13:38,432 INFO  L481      AbstractCegarLoop]: Abstraction has 57304 states and 81463 transitions.
[2020-10-26 21:13:38,432 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-26 21:13:38,432 INFO  L276                IsEmpty]: Start isEmpty. Operand 57304 states and 81463 transitions.
[2020-10-26 21:13:38,636 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1706
[2020-10-26 21:13:38,637 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-26 21:13:38,638 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-26 21:13:38,639 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-26 21:13:38,639 INFO  L429      AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-26 21:13:38,639 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-26 21:13:38,640 INFO  L82        PathProgramCache]: Analyzing trace with hash 317124618, now seen corresponding path program 1 times
[2020-10-26 21:13:38,641 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-26 21:13:38,641 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033749064]
[2020-10-26 21:13:38,642 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-26 21:13:38,781 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-26 21:13:38,818 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-26 21:13:39,136 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-26 21:13:43,833 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-26 21:13:43,833 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1731
[2020-10-26 21:13:43,833 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-26 21:13:43,834 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5047
[2020-10-26 21:13:43,834 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-26 21:13:43,834 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-26 21:13:43,834 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-26 21:13:43,834 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 46
[2020-10-26 21:13:43,834 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-26 21:13:44,224 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-26 21:13:44,229 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-26 21:13:44,232 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-26 21:13:44,242 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-26 21:13:44,242 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-26 21:13:44,243 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-26 21:13:44,243 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 12
[2020-10-26 21:13:44,243 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-26 21:13:44,243 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-26 21:13:44,243 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-26 21:13:44,243 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-26 21:13:44,243 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-26 21:13:44,271 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-26 21:13:44,281 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-26 21:13:44,289 FATAL L256   erpolLogProxyWrapper]: Now shrinking...