/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=DEEPEST --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_label30.c


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


This is Ultimate 0.2.0-0f64333
[2020-10-27 16:14:46,469 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-27 16:14:46,472 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-27 16:14:46,508 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-27 16:14:46,509 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-27 16:14:46,510 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-27 16:14:46,512 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-27 16:14:46,515 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-27 16:14:46,517 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-27 16:14:46,518 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-27 16:14:46,520 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-27 16:14:46,521 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-27 16:14:46,522 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-27 16:14:46,523 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-27 16:14:46,525 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-27 16:14:46,527 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-27 16:14:46,528 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-27 16:14:46,529 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-27 16:14:46,531 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-27 16:14:46,534 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-27 16:14:46,536 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-27 16:14:46,540 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-27 16:14:46,541 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-27 16:14:46,542 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-27 16:14:46,546 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-27 16:14:46,546 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-27 16:14:46,547 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-27 16:14:46,548 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-27 16:14:46,548 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-27 16:14:46,550 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-27 16:14:46,550 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-27 16:14:46,551 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-27 16:14:46,552 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-27 16:14:46,553 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-27 16:14:46,555 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-27 16:14:46,555 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-27 16:14:46,556 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-27 16:14:46,556 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-27 16:14:46,557 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-27 16:14:46,558 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-27 16:14:46,559 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-27 16:14:46,560 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
[2020-10-27 16:14:46,614 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-27 16:14:46,616 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-27 16:14:46,621 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-27 16:14:46,622 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-27 16:14:46,622 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-27 16:14:46,622 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-27 16:14:46,622 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-27 16:14:46,623 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-27 16:14:46,623 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-27 16:14:46,624 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-27 16:14:46,625 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-27 16:14:46,625 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-27 16:14:46,626 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-27 16:14:46,626 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-27 16:14:46,626 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-27 16:14:46,626 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-27 16:14:46,626 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-27 16:14:46,627 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-27 16:14:46,627 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-27 16:14:46,627 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-27 16:14:46,627 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-27 16:14:46,627 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-27 16:14:46,628 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-27 16:14:46,628 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-27 16:14:46,628 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-27 16:14:46,629 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-27 16:14:46,629 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-27 16:14:46,629 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-27 16:14:46,629 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-27 16:14:46,629 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true;
[2020-10-27 16:14:47,083 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-27 16:14:47,113 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-27 16:14:47,116 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-27 16:14:47,118 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-27 16:14:47,118 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-27 16:14:47,119 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label30.c
[2020-10-27 16:14:47,202 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b9a9553e/d9bea5a01dbb4d6cb3e257922042de10/FLAGc74bc4b5f
[2020-10-27 16:14:48,401 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-27 16:14:48,402 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label30.c
[2020-10-27 16:14:48,459 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b9a9553e/d9bea5a01dbb4d6cb3e257922042de10/FLAGc74bc4b5f
[2020-10-27 16:14:48,663 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b9a9553e/d9bea5a01dbb4d6cb3e257922042de10
[2020-10-27 16:14:48,667 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-27 16:14:48,673 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-27 16:14:48,676 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-27 16:14:48,676 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-27 16:14:48,684 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-27 16:14:48,685 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:14:48" (1/1) ...
[2020-10-27 16:14:48,726 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e74e755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:48, skipping insertion in model container
[2020-10-27 16:14:48,727 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:14:48" (1/1) ...
[2020-10-27 16:14:48,739 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-27 16:14:48,951 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-27 16:14:51,409 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-27 16:14:51,429 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-27 16:14:52,708 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-27 16:14:52,786 INFO  L208         MainTranslator]: Completed translation
[2020-10-27 16:14:52,787 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:52 WrapperNode
[2020-10-27 16:14:52,788 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-27 16:14:52,789 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-27 16:14:52,789 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-27 16:14:52,789 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-27 16:14:52,804 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:52" (1/1) ...
[2020-10-27 16:14:52,806 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:52" (1/1) ...
[2020-10-27 16:14:52,897 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:52" (1/1) ...
[2020-10-27 16:14:52,898 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:52" (1/1) ...
[2020-10-27 16:14:53,162 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:52" (1/1) ...
[2020-10-27 16:14:53,226 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:52" (1/1) ...
[2020-10-27 16:14:53,281 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:52" (1/1) ...
[2020-10-27 16:14:53,349 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-27 16:14:53,351 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-27 16:14:53,351 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-27 16:14:53,352 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-27 16:14:53,353 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:52" (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
[2020-10-27 16:14:53,438 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-27 16:14:53,438 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-27 16:14:53,439 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2020-10-27 16:14:53,439 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-27 16:14:53,439 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-27 16:14:53,439 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-27 16:14:53,439 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-27 16:14:53,440 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-27 16:14:53,440 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-27 16:14:53,440 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-27 16:14:53,440 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-27 16:14:53,440 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-27 16:14:53,440 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-27 16:14:53,441 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-27 16:14:53,441 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-27 16:14:53,441 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-27 16:14:53,441 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-27 16:14:53,441 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-27 16:14:53,442 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-27 16:14:53,442 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-27 16:14:53,442 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-10-27 16:14:53,442 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-27 16:14:53,442 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2020-10-27 16:14:53,442 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-27 16:14:53,443 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-27 16:14:53,443 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-27 16:14:53,443 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-27 16:14:53,443 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-27 16:14:53,443 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-27 16:14:53,443 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-27 16:14:53,443 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-10-27 16:14:53,444 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-10-27 16:14:53,444 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-27 16:15:03,026 INFO  L293             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-27 16:15:03,027 INFO  L298             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-27 16:15:03,034 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:15:03 BoogieIcfgContainer
[2020-10-27 16:15:03,034 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-27 16:15:03,039 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-27 16:15:03,040 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-27 16:15:03,044 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-27 16:15:03,044 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:14:48" (1/3) ...
[2020-10-27 16:15:03,045 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da92b97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:15:03, skipping insertion in model container
[2020-10-27 16:15:03,046 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:52" (2/3) ...
[2020-10-27 16:15:03,046 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da92b97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:15:03, skipping insertion in model container
[2020-10-27 16:15:03,046 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:15:03" (3/3) ...
[2020-10-27 16:15:03,048 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem05_label30.c
[2020-10-27 16:15:03,062 INFO  L164   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-27 16:15:03,070 INFO  L176   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-27 16:15:03,086 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-27 16:15:03,142 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2020-10-27 16:15:03,142 INFO  L378      AbstractCegarLoop]: Hoare is true
[2020-10-27 16:15:03,143 INFO  L379      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-27 16:15:03,143 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-27 16:15:03,143 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-27 16:15:03,143 INFO  L382      AbstractCegarLoop]: Difference is false
[2020-10-27 16:15:03,143 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-27 16:15:03,143 INFO  L387      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-27 16:15:03,209 INFO  L276                IsEmpty]: Start isEmpty. Operand 2226 states.
[2020-10-27 16:15:03,493 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1676
[2020-10-27 16:15:03,493 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 16:15:03,497 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-27 16:15:03,498 INFO  L429      AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 16:15:03,513 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 16:15:03,515 INFO  L82        PathProgramCache]: Analyzing trace with hash -1069094879, now seen corresponding path program 1 times
[2020-10-27 16:15:03,525 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 16:15:03,527 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1110641238]
[2020-10-27 16:15:03,528 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 16:15:04,574 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:15:05,075 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:15:09,726 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:15:09,726 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1699
[2020-10-27 16:15:09,726 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 16:15:09,727 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5141
[2020-10-27 16:15:09,729 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:15:09,730 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-27 16:15:09,730 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-27 16:15:09,730 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1690
[2020-10-27 16:15:09,730 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-10-27 16:15:11,959 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 16:15:11,969 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:15:11,974 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:15:11,992 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:15:11,992 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 16:15:11,992 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 16:15:11,992 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 21
[2020-10-27 16:15:11,993 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:15:11,993 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-27 16:15:11,993 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 16:15:11,993 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-27 16:15:11,994 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:15:14,780 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-27 16:15:14,781 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1110641238]
[2020-10-27 16:15:14,782 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-27 16:15:14,783 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-10-27 16:15:14,783 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170453638]
[2020-10-27 16:15:14,792 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-27 16:15:14,792 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 16:15:14,804 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-27 16:15:14,805 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-27 16:15:14,806 INFO  L87              Difference]: Start difference. First operand 2226 states. Second operand 4 states.
[2020-10-27 16:15:39,381 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 16:15:39,382 INFO  L93              Difference]: Finished difference Result 6315 states and 11856 transitions.
[2020-10-27 16:15:39,383 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-27 16:15:39,384 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1675
[2020-10-27 16:15:39,393 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 16:15:39,453 INFO  L225             Difference]: With dead ends: 6315
[2020-10-27 16:15:39,454 INFO  L226             Difference]: Without dead ends: 4025
[2020-10-27 16:15:39,474 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
[2020-10-27 16:15:39,506 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4025 states.
[2020-10-27 16:15:39,712 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4025 to 3998.
[2020-10-27 16:15:39,714 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3998 states.
[2020-10-27 16:15:39,742 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3998 states to 3998 states and 6428 transitions.
[2020-10-27 16:15:39,745 INFO  L78                 Accepts]: Start accepts. Automaton has 3998 states and 6428 transitions. Word has length 1675
[2020-10-27 16:15:39,751 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 16:15:39,751 INFO  L481      AbstractCegarLoop]: Abstraction has 3998 states and 6428 transitions.
[2020-10-27 16:15:39,752 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-27 16:15:39,752 INFO  L276                IsEmpty]: Start isEmpty. Operand 3998 states and 6428 transitions.
[2020-10-27 16:15:39,896 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1685
[2020-10-27 16:15:39,897 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 16:15:39,898 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-27 16:15:39,899 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-27 16:15:39,899 INFO  L429      AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 16:15:39,900 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 16:15:39,901 INFO  L82        PathProgramCache]: Analyzing trace with hash -1168384859, now seen corresponding path program 1 times
[2020-10-27 16:15:39,901 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 16:15:39,902 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188899645]
[2020-10-27 16:15:39,902 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 16:15:40,100 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:15:40,132 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:15:42,560 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:15:45,165 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:15:45,169 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1710
[2020-10-27 16:15:45,172 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 16:15:45,173 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5062
[2020-10-27 16:15:45,174 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:15:45,174 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-10-27 16:15:45,174 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 19
[2020-10-27 16:15:45,174 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1687
[2020-10-27 16:15:45,174 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-27 16:15:46,405 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 16:15:46,411 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:15:46,413 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:15:46,424 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:15:46,432 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 16:15:46,432 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 16:15:46,432 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 12
[2020-10-27 16:15:46,433 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:15:46,433 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 16:15:46,433 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 16:15:46,433 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 16:15:46,434 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:15:46,460 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-27 16:15:46,469 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:15:46,471 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:15:46,506 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:15:46,507 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-27 16:15:46,507 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 16:15:46,507 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 36
[2020-10-27 16:15:46,507 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:15:46,508 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-27 16:15:46,508 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 16:15:46,508 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-27 16:15:46,508 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:15:49,539 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-27 16:15:49,540 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188899645]
[2020-10-27 16:15:49,540 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 16:15:49,541 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6
[2020-10-27 16:15:49,541 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649862884]
[2020-10-27 16:15:49,545 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-10-27 16:15:49,545 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 16:15:49,546 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-10-27 16:15:49,546 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-10-27 16:15:49,547 INFO  L87              Difference]: Start difference. First operand 3998 states and 6428 transitions. Second operand 6 states.
[2020-10-27 16:16:29,324 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 16:16:29,324 INFO  L93              Difference]: Finished difference Result 15230 states and 24994 transitions.
[2020-10-27 16:16:29,325 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-10-27 16:16:29,325 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 1684
[2020-10-27 16:16:29,330 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 16:16:29,413 INFO  L225             Difference]: With dead ends: 15230
[2020-10-27 16:16:29,414 INFO  L226             Difference]: Without dead ends: 11238
[2020-10-27 16:16:29,430 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56
[2020-10-27 16:16:29,446 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11238 states.
[2020-10-27 16:16:29,789 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11238 to 11081.
[2020-10-27 16:16:29,789 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 11081 states.
[2020-10-27 16:16:29,832 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11081 states to 11081 states and 17678 transitions.
[2020-10-27 16:16:29,832 INFO  L78                 Accepts]: Start accepts. Automaton has 11081 states and 17678 transitions. Word has length 1684
[2020-10-27 16:16:29,836 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 16:16:29,836 INFO  L481      AbstractCegarLoop]: Abstraction has 11081 states and 17678 transitions.
[2020-10-27 16:16:29,836 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-10-27 16:16:29,836 INFO  L276                IsEmpty]: Start isEmpty. Operand 11081 states and 17678 transitions.
[2020-10-27 16:16:29,892 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1693
[2020-10-27 16:16:29,893 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 16:16:29,894 INFO  L422         BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-27 16:16:29,895 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-27 16:16:29,895 INFO  L429      AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 16:16:29,896 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 16:16:29,898 INFO  L82        PathProgramCache]: Analyzing trace with hash -967927391, now seen corresponding path program 1 times
[2020-10-27 16:16:29,898 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 16:16:29,898 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393381310]
[2020-10-27 16:16:29,899 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 16:16:30,029 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:16:30,061 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:16:30,142 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:16:31,680 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:16:35,294 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:16:35,294 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1720
[2020-10-27 16:16:35,295 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-27 16:16:35,295 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5261
[2020-10-27 16:16:35,295 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:16:35,295 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-27 16:16:35,295 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 19
[2020-10-27 16:16:35,296 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 11
[2020-10-27 16:16:35,296 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:16:35,778 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 16:16:35,781 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:16:35,783 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:16:35,790 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:16:35,791 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 16:16:35,791 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 16:16:35,791 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-10-27 16:16:35,791 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:16:35,791 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 16:16:35,791 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 16:16:35,792 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 16:16:35,792 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:16:35,818 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-27 16:16:35,822 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:16:35,824 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:16:35,831 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:16:35,832 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-27 16:16:35,832 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 16:16:35,832 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-10-27 16:16:35,832 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:16:35,832 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-27 16:16:35,833 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 16:16:35,833 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-27 16:16:35,833 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:16:35,837 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2020-10-27 16:16:35,839 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:16:35,841 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:16:35,849 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:16:35,850 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-10-27 16:16:35,850 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 16:16:35,850 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-10-27 16:16:35,850 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:16:35,850 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-27 16:16:35,851 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-27 16:16:35,851 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-10-27 16:16:35,851 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:16:37,113 INFO  L134       CoverageAnalysis]: Checked inductivity of 19 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-27 16:16:37,113 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393381310]
[2020-10-27 16:16:37,114 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 16:16:37,114 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-27 16:16:37,114 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137461614]
[2020-10-27 16:16:37,116 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-27 16:16:37,116 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 16:16:37,117 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-27 16:16:37,117 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2020-10-27 16:16:37,117 INFO  L87              Difference]: Start difference. First operand 11081 states and 17678 transitions. Second operand 7 states.
[2020-10-27 16:17:08,319 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 16:17:08,319 INFO  L93              Difference]: Finished difference Result 32872 states and 53622 transitions.
[2020-10-27 16:17:08,320 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-10-27 16:17:08,320 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1692
[2020-10-27 16:17:08,320 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 16:17:08,423 INFO  L225             Difference]: With dead ends: 32872
[2020-10-27 16:17:08,423 INFO  L226             Difference]: Without dead ends: 21797
[2020-10-27 16:17:08,460 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110
[2020-10-27 16:17:08,486 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21797 states.
[2020-10-27 16:17:09,007 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21797 to 21771.
[2020-10-27 16:17:09,008 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 21771 states.
[2020-10-27 16:17:09,060 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 21771 states to 21771 states and 33698 transitions.
[2020-10-27 16:17:09,060 INFO  L78                 Accepts]: Start accepts. Automaton has 21771 states and 33698 transitions. Word has length 1692
[2020-10-27 16:17:09,061 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 16:17:09,061 INFO  L481      AbstractCegarLoop]: Abstraction has 21771 states and 33698 transitions.
[2020-10-27 16:17:09,061 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-27 16:17:09,061 INFO  L276                IsEmpty]: Start isEmpty. Operand 21771 states and 33698 transitions.
[2020-10-27 16:17:09,142 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1733
[2020-10-27 16:17:09,142 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 16:17:09,144 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-27 16:17:09,144 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-27 16:17:09,144 INFO  L429      AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 16:17:09,145 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 16:17:09,146 INFO  L82        PathProgramCache]: Analyzing trace with hash 254282342, now seen corresponding path program 1 times
[2020-10-27 16:17:09,146 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 16:17:09,146 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97394343]
[2020-10-27 16:17:09,147 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 16:17:09,267 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:17:09,292 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:17:09,374 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:17:14,455 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:17:14,456 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1760
[2020-10-27 16:17:14,456 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 16:17:14,456 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5184
[2020-10-27 16:17:14,456 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:17:14,456 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-27 16:17:14,458 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 19
[2020-10-27 16:17:14,458 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 51
[2020-10-27 16:17:14,458 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-10-27 16:17:14,922 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 16:17:14,925 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:17:14,927 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:17:14,931 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:17:14,931 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 16:17:14,932 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 16:17:14,932 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-10-27 16:17:14,932 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:17:14,932 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 16:17:14,932 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 16:17:14,932 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 16:17:14,933 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:17:14,959 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-27 16:17:14,963 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:17:14,964 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:17:14,970 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:17:14,971 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-27 16:17:14,971 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 16:17:14,971 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-10-27 16:17:14,971 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:17:14,971 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-27 16:17:14,972 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 16:17:14,972 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-27 16:17:14,972 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:17:14,991 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2020-10-27 16:17:15,000 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:17:15,009 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:17:15,083 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:17:15,083 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 49
[2020-10-27 16:17:15,083 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 16:17:15,084 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 81
[2020-10-27 16:17:15,084 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:17:15,084 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-27 16:17:15,084 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-27 16:17:15,084 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 49
[2020-10-27 16:17:15,084 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:17:16,627 INFO  L134       CoverageAnalysis]: Checked inductivity of 60 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-27 16:17:16,628 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97394343]
[2020-10-27 16:17:16,628 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 16:17:16,628 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-10-27 16:17:16,628 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029979411]
[2020-10-27 16:17:16,630 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-27 16:17:16,631 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 16:17:16,631 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-27 16:17:16,632 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-10-27 16:17:16,632 INFO  L87              Difference]: Start difference. First operand 21771 states and 33698 transitions. Second operand 8 states.
[2020-10-27 16:17:58,853 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 16:17:58,853 INFO  L93              Difference]: Finished difference Result 58685 states and 93344 transitions.
[2020-10-27 16:17:58,854 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-10-27 16:17:58,854 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 1732
[2020-10-27 16:17:58,854 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 16:17:59,006 INFO  L225             Difference]: With dead ends: 58685
[2020-10-27 16:17:59,006 INFO  L226             Difference]: Without dead ends: 36920
[2020-10-27 16:17:59,068 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240
[2020-10-27 16:17:59,113 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 36920 states.
[2020-10-27 16:18:00,045 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 36920 to 36654.
[2020-10-27 16:18:00,046 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 36654 states.
[2020-10-27 16:18:00,134 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 36654 states to 36654 states and 54570 transitions.
[2020-10-27 16:18:00,135 INFO  L78                 Accepts]: Start accepts. Automaton has 36654 states and 54570 transitions. Word has length 1732
[2020-10-27 16:18:00,135 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 16:18:00,136 INFO  L481      AbstractCegarLoop]: Abstraction has 36654 states and 54570 transitions.
[2020-10-27 16:18:00,136 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-27 16:18:00,136 INFO  L276                IsEmpty]: Start isEmpty. Operand 36654 states and 54570 transitions.
[2020-10-27 16:18:00,260 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1762
[2020-10-27 16:18:00,260 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 16:18:00,262 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1]
[2020-10-27 16:18:00,262 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-27 16:18:00,262 INFO  L429      AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 16:18:00,263 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 16:18:00,264 INFO  L82        PathProgramCache]: Analyzing trace with hash -1562946970, now seen corresponding path program 1 times
[2020-10-27 16:18:00,265 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 16:18:00,265 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024557231]
[2020-10-27 16:18:00,265 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 16:18:00,398 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:18:00,432 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:18:00,512 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:18:00,669 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:18:03,113 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:18:05,277 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:18:05,821 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:18:05,821 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1789
[2020-10-27 16:18:05,821 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 5
[2020-10-27 16:18:05,822 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5417
[2020-10-27 16:18:05,822 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:18:05,822 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-27 16:18:05,822 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 47
[2020-10-27 16:18:05,822 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 52
[2020-10-27 16:18:05,823 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:18:06,292 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 16:18:06,297 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:18:06,302 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:18:06,309 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:18:06,309 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 16:18:06,310 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 16:18:06,310 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-10-27 16:18:06,310 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:18:06,310 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 16:18:06,310 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 16:18:06,310 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 16:18:06,311 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:18:06,342 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-27 16:18:06,350 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:18:06,355 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:18:06,363 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:18:06,403 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:18:06,404 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 39
[2020-10-27 16:18:06,404 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 16:18:06,404 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 52
[2020-10-27 16:18:06,404 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:18:06,404 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-27 16:18:06,404 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 31
[2020-10-27 16:18:06,404 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-27 16:18:06,404 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:18:06,423 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46
[2020-10-27 16:18:06,432 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:18:06,439 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:18:06,491 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:18:06,491 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 49
[2020-10-27 16:18:06,492 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 16:18:06,492 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 58
[2020-10-27 16:18:06,492 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:18:06,492 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-27 16:18:06,492 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-27 16:18:06,492 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 49
[2020-10-27 16:18:06,492 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:18:07,666 INFO  L134       CoverageAnalysis]: Checked inductivity of 114 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-27 16:18:07,667 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024557231]
[2020-10-27 16:18:07,667 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 16:18:07,667 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-10-27 16:18:07,667 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487124485]
[2020-10-27 16:18:07,669 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-27 16:18:07,670 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 16:18:07,670 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-27 16:18:07,670 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2020-10-27 16:18:07,670 INFO  L87              Difference]: Start difference. First operand 36654 states and 54570 transitions. Second operand 8 states.