/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/Problem13_label51.c


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


This is Ultimate 0.2.0-0f64333
[2020-10-29 07:23:13,685 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-29 07:23:13,690 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-29 07:23:13,734 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-29 07:23:13,735 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-29 07:23:13,737 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-29 07:23:13,738 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-29 07:23:13,741 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-29 07:23:13,743 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-29 07:23:13,745 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-29 07:23:13,746 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-29 07:23:13,748 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-29 07:23:13,748 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-29 07:23:13,750 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-29 07:23:13,751 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-29 07:23:13,753 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-29 07:23:13,754 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-29 07:23:13,755 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-29 07:23:13,757 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-29 07:23:13,760 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-29 07:23:13,762 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-29 07:23:13,764 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-29 07:23:13,766 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-29 07:23:13,767 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-29 07:23:13,771 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-29 07:23:13,771 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-29 07:23:13,792 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-29 07:23:13,795 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-29 07:23:13,795 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-29 07:23:13,800 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-29 07:23:13,801 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-29 07:23:13,802 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-29 07:23:13,803 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-29 07:23:13,804 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-29 07:23:13,817 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-29 07:23:13,818 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-29 07:23:13,819 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-29 07:23:13,822 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-29 07:23:13,823 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-29 07:23:13,824 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-29 07:23:13,829 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-29 07:23:13,832 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
[2020-10-29 07:23:13,890 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-29 07:23:13,890 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-29 07:23:13,895 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-29 07:23:13,895 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-29 07:23:13,895 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-29 07:23:13,896 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-29 07:23:13,896 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-29 07:23:13,896 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-29 07:23:13,896 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-29 07:23:13,896 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-29 07:23:13,898 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-29 07:23:13,898 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-29 07:23:13,898 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-29 07:23:13,899 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-29 07:23:13,899 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-29 07:23:13,899 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-29 07:23:13,899 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-29 07:23:13,899 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-29 07:23:13,900 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-29 07:23:13,900 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-29 07:23:13,900 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-29 07:23:13,900 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-29 07:23:13,901 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-29 07:23:13,901 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-29 07:23:13,901 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-29 07:23:13,902 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-29 07:23:13,902 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-29 07:23:13,902 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-29 07:23:13,902 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-29 07:23:13,902 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true;
[2020-10-29 07:23:14,395 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-29 07:23:14,423 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-29 07:23:14,427 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-29 07:23:14,428 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-29 07:23:14,429 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-29 07:23:14,430 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label51.c
[2020-10-29 07:23:14,529 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1541dd93a/1c454cd764914001beeddb020e65e6d1/FLAGe05b3c718
[2020-10-29 07:23:15,753 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-29 07:23:15,753 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label51.c
[2020-10-29 07:23:15,793 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1541dd93a/1c454cd764914001beeddb020e65e6d1/FLAGe05b3c718
[2020-10-29 07:23:16,059 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1541dd93a/1c454cd764914001beeddb020e65e6d1
[2020-10-29 07:23:16,063 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-29 07:23:16,070 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-29 07:23:16,074 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-29 07:23:16,074 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-29 07:23:16,079 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-29 07:23:16,080 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:23:16" (1/1) ...
[2020-10-29 07:23:16,085 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6175e918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:23:16, skipping insertion in model container
[2020-10-29 07:23:16,086 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:23:16" (1/1) ...
[2020-10-29 07:23:16,096 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-29 07:23:16,276 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-29 07:23:18,088 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-29 07:23:18,146 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-29 07:23:19,024 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-29 07:23:19,064 INFO  L208         MainTranslator]: Completed translation
[2020-10-29 07:23:19,066 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:23:19 WrapperNode
[2020-10-29 07:23:19,066 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-29 07:23:19,067 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-29 07:23:19,068 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-29 07:23:19,068 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-29 07:23:19,083 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:23:19" (1/1) ...
[2020-10-29 07:23:19,085 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:23:19" (1/1) ...
[2020-10-29 07:23:19,164 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:23:19" (1/1) ...
[2020-10-29 07:23:19,165 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:23:19" (1/1) ...
[2020-10-29 07:23:19,362 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:23:19" (1/1) ...
[2020-10-29 07:23:19,399 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:23:19" (1/1) ...
[2020-10-29 07:23:19,472 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:23:19" (1/1) ...
[2020-10-29 07:23:19,635 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-29 07:23:19,639 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-29 07:23:19,639 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-29 07:23:19,640 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-29 07:23:19,641 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:23:19" (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
[2020-10-29 07:23:19,770 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-29 07:23:19,770 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-29 07:23:19,770 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2020-10-29 07:23:19,770 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-29 07:23:19,771 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-29 07:23:19,771 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-29 07:23:19,771 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-29 07:23:19,771 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-29 07:23:19,771 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-29 07:23:19,771 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-29 07:23:19,772 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-29 07:23:19,772 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-29 07:23:19,772 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-10-29 07:23:19,772 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-29 07:23:19,772 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2020-10-29 07:23:19,772 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-29 07:23:19,773 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-29 07:23:19,773 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-29 07:23:19,773 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-29 07:23:19,773 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-29 07:23:19,773 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-29 07:23:19,773 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-29 07:23:19,773 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-10-29 07:23:19,774 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-10-29 07:23:19,774 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-29 07:23:30,880 INFO  L293             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-29 07:23:30,880 INFO  L298             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-29 07:23:30,888 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:23:30 BoogieIcfgContainer
[2020-10-29 07:23:30,888 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-29 07:23:30,891 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-29 07:23:30,891 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-29 07:23:30,895 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-29 07:23:30,896 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:23:16" (1/3) ...
[2020-10-29 07:23:30,897 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@366ae6c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:23:30, skipping insertion in model container
[2020-10-29 07:23:30,897 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:23:19" (2/3) ...
[2020-10-29 07:23:30,898 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@366ae6c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:23:30, skipping insertion in model container
[2020-10-29 07:23:30,898 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:23:30" (3/3) ...
[2020-10-29 07:23:30,900 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem13_label51.c
[2020-10-29 07:23:30,912 INFO  L164   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-29 07:23:30,920 INFO  L176   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-29 07:23:30,939 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-29 07:23:31,003 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2020-10-29 07:23:31,003 INFO  L378      AbstractCegarLoop]: Hoare is true
[2020-10-29 07:23:31,003 INFO  L379      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-29 07:23:31,004 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-29 07:23:31,004 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-29 07:23:31,004 INFO  L382      AbstractCegarLoop]: Difference is false
[2020-10-29 07:23:31,004 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-29 07:23:31,004 INFO  L387      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-29 07:23:31,065 INFO  L276                IsEmpty]: Start isEmpty. Operand 1123 states.
[2020-10-29 07:23:31,074 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2020-10-29 07:23:31,075 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 07:23:31,076 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]
[2020-10-29 07:23:31,076 INFO  L429      AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 07:23:31,088 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 07:23:31,089 INFO  L82        PathProgramCache]: Analyzing trace with hash -707284782, now seen corresponding path program 1 times
[2020-10-29 07:23:31,101 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 07:23:31,102 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847032644]
[2020-10-29 07:23:31,103 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 07:23:31,420 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 07:23:31,471 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 07:23:31,944 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 07:23:31,945 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 41
[2020-10-29 07:23:31,945 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 07:23:31,945 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 519
[2020-10-29 07:23:31,948 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 07:23:31,948 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 07:23:31,948 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-29 07:23:31,949 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-29 07:23:31,949 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 32
[2020-10-29 07:23:31,949 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-29 07:23:32,257 WARN  L193               SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 64
[2020-10-29 07:23:32,260 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-29 07:23:32,274 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 07:23:32,288 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 07:23:32,326 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 07:23:32,326 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-29 07:23:32,327 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 07:23:32,327 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 49
[2020-10-29 07:23:32,328 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 07:23:32,328 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 07:23:32,329 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-29 07:23:32,329 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 07:23:32,329 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-29 07:23:32,330 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-29 07:23:32,357 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-29 07:23:32,358 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847032644]
[2020-10-29 07:23:32,361 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-29 07:23:32,362 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-10-29 07:23:32,363 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005107859]
[2020-10-29 07:23:32,369 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-29 07:23:32,370 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-29 07:23:32,393 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-29 07:23:32,395 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-29 07:23:32,399 INFO  L87              Difference]: Start difference. First operand 1123 states. Second operand 4 states.
[2020-10-29 07:23:32,622 WARN  L193               SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 66
[2020-10-29 07:23:48,998 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-29 07:23:48,999 INFO  L93              Difference]: Finished difference Result 3123 states and 5754 transitions.
[2020-10-29 07:23:49,000 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-29 07:23:49,002 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 31
[2020-10-29 07:23:49,002 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-29 07:23:49,042 INFO  L225             Difference]: With dead ends: 3123
[2020-10-29 07:23:49,042 INFO  L226             Difference]: Without dead ends: 1936
[2020-10-29 07:23:49,055 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-10-29 07:23:49,083 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1936 states.
[2020-10-29 07:23:49,245 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1936 to 1918.
[2020-10-29 07:23:49,247 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1918 states.
[2020-10-29 07:23:49,260 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1918 states to 1918 states and 2936 transitions.
[2020-10-29 07:23:49,262 INFO  L78                 Accepts]: Start accepts. Automaton has 1918 states and 2936 transitions. Word has length 31
[2020-10-29 07:23:49,264 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-29 07:23:49,264 INFO  L481      AbstractCegarLoop]: Abstraction has 1918 states and 2936 transitions.
[2020-10-29 07:23:49,265 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-29 07:23:49,265 INFO  L276                IsEmpty]: Start isEmpty. Operand 1918 states and 2936 transitions.
[2020-10-29 07:23:49,273 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 108
[2020-10-29 07:23:49,273 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 07:23:49,275 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-29 07:23:49,275 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-29 07:23:49,276 INFO  L429      AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 07:23:49,277 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 07:23:49,277 INFO  L82        PathProgramCache]: Analyzing trace with hash -537988296, now seen corresponding path program 1 times
[2020-10-29 07:23:49,277 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 07:23:49,278 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168960540]
[2020-10-29 07:23:49,278 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 07:23:49,371 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 07:23:49,421 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 07:23:49,902 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 07:23:51,003 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 07:23:51,118 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 07:23:51,119 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 119
[2020-10-29 07:23:51,119 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-29 07:23:51,120 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1744
[2020-10-29 07:23:51,122 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 07:23:51,126 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 07:23:51,126 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-29 07:23:51,127 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-29 07:23:51,127 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 82
[2020-10-29 07:23:51,127 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 6
[2020-10-29 07:23:51,262 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-29 07:23:51,269 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 07:23:51,276 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 07:23:51,307 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 07:23:51,311 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-29 07:23:51,311 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 07:23:51,312 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 36
[2020-10-29 07:23:51,313 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 07:23:51,313 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 07:23:51,313 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-29 07:23:51,313 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 07:23:51,314 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-29 07:23:51,314 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-29 07:23:51,362 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-29 07:23:51,393 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 07:23:51,413 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 07:23:51,606 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 07:23:51,607 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 77
[2020-10-29 07:23:51,607 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 07:23:51,607 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 212
[2020-10-29 07:23:51,607 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 07:23:51,608 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 07:23:51,608 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-29 07:23:51,608 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-29 07:23:51,608 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 77
[2020-10-29 07:23:51,609 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-29 07:23:51,748 INFO  L134       CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-29 07:23:51,749 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168960540]
[2020-10-29 07:23:51,749 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-29 07:23:51,749 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-29 07:23:51,750 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670374407]
[2020-10-29 07:23:51,752 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-29 07:23:51,753 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-29 07:23:51,755 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-29 07:23:51,755 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-29 07:23:51,756 INFO  L87              Difference]: Start difference. First operand 1918 states and 2936 transitions. Second operand 7 states.
[2020-10-29 07:24:23,627 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-29 07:24:23,627 INFO  L93              Difference]: Finished difference Result 5682 states and 8806 transitions.
[2020-10-29 07:24:23,629 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-29 07:24:23,629 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 107
[2020-10-29 07:24:23,630 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-29 07:24:23,657 INFO  L225             Difference]: With dead ends: 5682
[2020-10-29 07:24:23,657 INFO  L226             Difference]: Without dead ends: 3770
[2020-10-29 07:24:23,665 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-29 07:24:23,672 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3770 states.
[2020-10-29 07:24:23,784 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3770 to 3661.
[2020-10-29 07:24:23,784 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3661 states.
[2020-10-29 07:24:23,802 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3661 states to 3661 states and 5428 transitions.
[2020-10-29 07:24:23,803 INFO  L78                 Accepts]: Start accepts. Automaton has 3661 states and 5428 transitions. Word has length 107
[2020-10-29 07:24:23,804 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-29 07:24:23,804 INFO  L481      AbstractCegarLoop]: Abstraction has 3661 states and 5428 transitions.
[2020-10-29 07:24:23,804 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-29 07:24:23,804 INFO  L276                IsEmpty]: Start isEmpty. Operand 3661 states and 5428 transitions.
[2020-10-29 07:24:23,815 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 122
[2020-10-29 07:24:23,816 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 07:24:23,816 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-29 07:24:23,816 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-29 07:24:23,816 INFO  L429      AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 07:24:23,817 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 07:24:23,818 INFO  L82        PathProgramCache]: Analyzing trace with hash 1785288923, now seen corresponding path program 1 times
[2020-10-29 07:24:23,818 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 07:24:23,819 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504427023]
[2020-10-29 07:24:23,820 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 07:24:23,880 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 07:24:23,915 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 07:24:24,245 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 07:24:25,084 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 07:24:25,084 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 133
[2020-10-29 07:24:25,084 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-29 07:24:25,085 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1200
[2020-10-29 07:24:25,087 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 07:24:25,087 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 07:24:25,088 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-29 07:24:25,088 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-29 07:24:25,088 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 94
[2020-10-29 07:24:25,088 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-29 07:24:25,229 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-29 07:24:25,241 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 07:24:25,250 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 07:24:25,286 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 07:24:25,287 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-29 07:24:25,287 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 07:24:25,287 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 44
[2020-10-29 07:24:25,287 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 07:24:25,288 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 07:24:25,288 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-29 07:24:25,291 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 07:24:25,291 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-29 07:24:25,292 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-10-29 07:24:25,359 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-29 07:24:25,393 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 07:24:25,414 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 07:24:25,601 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 07:24:25,602 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 91
[2020-10-29 07:24:25,602 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 07:24:25,602 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 205
[2020-10-29 07:24:25,602 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 07:24:25,603 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 07:24:25,603 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-29 07:24:25,603 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-29 07:24:25,603 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 91
[2020-10-29 07:24:25,604 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-29 07:24:25,796 INFO  L134       CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-29 07:24:25,797 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504427023]
[2020-10-29 07:24:25,797 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-29 07:24:25,797 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-10-29 07:24:25,798 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489581977]
[2020-10-29 07:24:25,799 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-29 07:24:25,800 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-29 07:24:25,801 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-29 07:24:25,802 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-10-29 07:24:25,802 INFO  L87              Difference]: Start difference. First operand 3661 states and 5428 transitions. Second operand 8 states.
[2020-10-29 07:25:00,320 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-29 07:25:00,322 INFO  L93              Difference]: Finished difference Result 14264 states and 21900 transitions.
[2020-10-29 07:25:00,324 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-10-29 07:25:00,324 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 121
[2020-10-29 07:25:00,325 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-29 07:25:00,404 INFO  L225             Difference]: With dead ends: 14264
[2020-10-29 07:25:00,404 INFO  L226             Difference]: Without dead ends: 10609
[2020-10-29 07:25:00,421 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210
[2020-10-29 07:25:00,438 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10609 states.
[2020-10-29 07:25:00,891 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10609 to 10544.
[2020-10-29 07:25:00,897 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 10544 states.
[2020-10-29 07:25:00,940 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10544 states to 10544 states and 14555 transitions.
[2020-10-29 07:25:00,941 INFO  L78                 Accepts]: Start accepts. Automaton has 10544 states and 14555 transitions. Word has length 121
[2020-10-29 07:25:00,942 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-29 07:25:00,943 INFO  L481      AbstractCegarLoop]: Abstraction has 10544 states and 14555 transitions.
[2020-10-29 07:25:00,943 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-29 07:25:00,943 INFO  L276                IsEmpty]: Start isEmpty. Operand 10544 states and 14555 transitions.
[2020-10-29 07:25:00,953 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 150
[2020-10-29 07:25:00,954 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 07:25:00,954 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-29 07:25:00,955 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-29 07:25:00,955 INFO  L429      AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 07:25:00,958 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 07:25:00,959 INFO  L82        PathProgramCache]: Analyzing trace with hash -439269793, now seen corresponding path program 1 times
[2020-10-29 07:25:00,959 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 07:25:00,960 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921575081]
[2020-10-29 07:25:00,961 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 07:25:01,007 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 07:25:01,041 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 07:25:01,391 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 07:25:01,539 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 07:25:02,895 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 07:25:02,895 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 161
[2020-10-29 07:25:02,896 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-29 07:25:02,896 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1883
[2020-10-29 07:25:02,896 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 07:25:02,897 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 07:25:02,897 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-29 07:25:02,897 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-29 07:25:02,897 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 122
[2020-10-29 07:25:02,897 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-29 07:25:03,065 WARN  L193               SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 64
[2020-10-29 07:25:03,067 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-29 07:25:03,139 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 07:25:03,147 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 07:25:03,160 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 07:25:03,161 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-29 07:25:03,161 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 07:25:03,161 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 20
[2020-10-29 07:25:03,161 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 07:25:03,162 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 07:25:03,162 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-29 07:25:03,162 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 07:25:03,163 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-29 07:25:03,163 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-29 07:25:03,213 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-29 07:25:03,245 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 07:25:03,271 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 07:25:03,469 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 07:25:03,469 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 119
[2020-10-29 07:25:03,469 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 07:25:03,470 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 223
[2020-10-29 07:25:03,473 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 07:25:03,473 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 07:25:03,473 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-29 07:25:03,474 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-29 07:25:03,474 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 119
[2020-10-29 07:25:03,474 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-29 07:25:03,617 INFO  L134       CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-29 07:25:03,619 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921575081]
[2020-10-29 07:25:03,620 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-29 07:25:03,620 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-29 07:25:03,620 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002686014]
[2020-10-29 07:25:03,621 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-29 07:25:03,621 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-29 07:25:03,621 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-29 07:25:03,622 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-29 07:25:03,622 INFO  L87              Difference]: Start difference. First operand 10544 states and 14555 transitions. Second operand 7 states.
[2020-10-29 07:25:03,770 WARN  L193               SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 66
[2020-10-29 07:25:36,691 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-29 07:25:36,692 INFO  L93              Difference]: Finished difference Result 31509 states and 45811 transitions.
[2020-10-29 07:25:36,694 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-10-29 07:25:36,695 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 149
[2020-10-29 07:25:36,699 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-29 07:25:36,822 INFO  L225             Difference]: With dead ends: 31509
[2020-10-29 07:25:36,822 INFO  L226             Difference]: Without dead ends: 20971
[2020-10-29 07:25:36,865 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132
[2020-10-29 07:25:36,896 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20971 states.
[2020-10-29 07:25:37,512 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20971 to 20866.
[2020-10-29 07:25:37,513 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 20866 states.
[2020-10-29 07:25:37,576 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20866 states to 20866 states and 27874 transitions.
[2020-10-29 07:25:37,577 INFO  L78                 Accepts]: Start accepts. Automaton has 20866 states and 27874 transitions. Word has length 149
[2020-10-29 07:25:37,579 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-29 07:25:37,580 INFO  L481      AbstractCegarLoop]: Abstraction has 20866 states and 27874 transitions.
[2020-10-29 07:25:37,580 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-29 07:25:37,580 INFO  L276                IsEmpty]: Start isEmpty. Operand 20866 states and 27874 transitions.
[2020-10-29 07:25:37,585 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 200
[2020-10-29 07:25:37,585 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 07:25:37,586 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2020-10-29 07:25:37,586 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-29 07:25:37,586 INFO  L429      AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 07:25:37,587 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 07:25:37,587 INFO  L82        PathProgramCache]: Analyzing trace with hash 1953469998, now seen corresponding path program 1 times
[2020-10-29 07:25:37,588 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 07:25:37,588 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842081106]
[2020-10-29 07:25:37,588 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 07:25:37,645 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 07:25:37,688 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 07:25:37,842 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 07:25:38,097 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 07:25:39,502 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 07:25:42,659 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 07:25:42,660 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 213
[2020-10-29 07:25:42,660 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-29 07:25:42,660 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5010
[2020-10-29 07:25:42,660 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 07:25:42,661 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 07:25:42,661 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-10-29 07:25:42,661 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-29 07:25:42,661 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 176
[2020-10-29 07:25:42,661 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 07:25:42,875 WARN  L193               SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 64
[2020-10-29 07:25:42,877 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-29 07:25:42,882 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 07:25:42,887 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 07:25:42,904 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 07:25:42,904 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-29 07:25:42,904 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 07:25:42,904 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 21
[2020-10-29 07:25:42,905 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 07:25:42,905 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 07:25:42,905 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-29 07:25:42,905 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 07:25:42,905 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-29 07:25:42,906 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 07:25:42,945 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-29 07:25:42,967 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 07:25:42,984 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 07:25:43,137 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 07:25:43,137 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 94
[2020-10-29 07:25:43,138 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 07:25:43,138 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 169
[2020-10-29 07:25:43,138 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 07:25:43,138 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 07:25:43,138 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-29 07:25:43,139 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-29 07:25:43,139 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 94
[2020-10-29 07:25:43,139 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-29 07:25:43,203 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101
[2020-10-29 07:25:43,229 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 07:25:43,241 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 07:25:43,359 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 07:25:43,360 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 76
[2020-10-29 07:25:43,360 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 07:25:43,360 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 129
[2020-10-29 07:25:43,360 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 07:25:43,360 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 07:25:43,360 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-29 07:25:43,361 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-29 07:25:43,361 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 76
[2020-10-29 07:25:43,361 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 07:25:43,515 INFO  L134       CoverageAnalysis]: Checked inductivity of 121 backedges. 47 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2020-10-29 07:25:43,516 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842081106]
[2020-10-29 07:25:43,516 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-29 07:25:43,516 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-29 07:25:43,516 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82141006]
[2020-10-29 07:25:43,517 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-29 07:25:43,517 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-29 07:25:43,518 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-29 07:25:43,518 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2020-10-29 07:25:43,518 INFO  L87              Difference]: Start difference. First operand 20866 states and 27874 transitions. Second operand 8 states.
[2020-10-29 07:25:43,664 WARN  L193               SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 66
[2020-10-29 07:25:47,993 WARN  L193               SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 66
[2020-10-29 07:26:23,356 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-29 07:26:23,356 INFO  L93              Difference]: Finished difference Result 62058 states and 90360 transitions.
[2020-10-29 07:26:23,358 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-10-29 07:26:23,358 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 199
[2020-10-29 07:26:23,359 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-29 07:26:23,546 INFO  L225             Difference]: With dead ends: 62058
[2020-10-29 07:26:23,546 INFO  L226             Difference]: Without dead ends: 41198
[2020-10-29 07:26:23,634 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210
[2020-10-29 07:26:23,687 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41198 states.
[2020-10-29 07:26:24,793 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41198 to 38312.
[2020-10-29 07:26:24,794 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 38312 states.
[2020-10-29 07:26:24,920 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 38312 states to 38312 states and 50710 transitions.
[2020-10-29 07:26:24,921 INFO  L78                 Accepts]: Start accepts. Automaton has 38312 states and 50710 transitions. Word has length 199
[2020-10-29 07:26:24,922 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-29 07:26:24,922 INFO  L481      AbstractCegarLoop]: Abstraction has 38312 states and 50710 transitions.
[2020-10-29 07:26:24,922 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-29 07:26:24,923 INFO  L276                IsEmpty]: Start isEmpty. Operand 38312 states and 50710 transitions.
[2020-10-29 07:26:24,927 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 232
[2020-10-29 07:26:24,928 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 07:26:24,928 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2020-10-29 07:26:24,928 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-10-29 07:26:24,928 INFO  L429      AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 07:26:24,929 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 07:26:24,929 INFO  L82        PathProgramCache]: Analyzing trace with hash -1119193746, now seen corresponding path program 1 times
[2020-10-29 07:26:24,929 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 07:26:24,930 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052544510]
[2020-10-29 07:26:24,930 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 07:26:24,992 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 07:26:25,037 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 07:26:25,127 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 07:26:25,215 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 07:26:30,025 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 07:26:30,025 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 245
[2020-10-29 07:26:30,026 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-29 07:26:30,026 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5028
[2020-10-29 07:26:30,026 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 07:26:30,026 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 07:26:30,026 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-29 07:26:30,026 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 103
[2020-10-29 07:26:30,027 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 110
[2020-10-29 07:26:30,027 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 07:26:30,207 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-29 07:26:30,210 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 07:26:30,211 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 07:26:30,220 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 07:26:30,220 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-29 07:26:30,220 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 07:26:30,221 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-10-29 07:26:30,221 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 07:26:30,221 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 07:26:30,221 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-29 07:26:30,221 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 07:26:30,222 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-29 07:26:30,222 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 07:26:30,259 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-29 07:26:30,278 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 07:26:30,294 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 07:26:30,377 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 07:26:30,377 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 94
[2020-10-29 07:26:30,378 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 07:26:30,378 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 98
[2020-10-29 07:26:30,378 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 07:26:30,378 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 07:26:30,378 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-29 07:26:30,378 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 07:26:30,379 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 88
[2020-10-29 07:26:30,379 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 07:26:30,418 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101
[2020-10-29 07:26:30,444 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 07:26:30,463 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 07:26:30,659 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 07:26:30,659 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 108
[2020-10-29 07:26:30,660 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 07:26:30,660 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 214
[2020-10-29 07:26:30,660 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 07:26:30,660 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 07:26:30,660 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-29 07:26:30,661 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-29 07:26:30,661 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 108
[2020-10-29 07:26:30,662 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 07:26:30,836 INFO  L134       CoverageAnalysis]: Checked inductivity of 139 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-29 07:26:30,836 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052544510]
[2020-10-29 07:26:30,838 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-29 07:26:30,838 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-29 07:26:30,838 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485111189]
[2020-10-29 07:26:30,839 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-29 07:26:30,839 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-29 07:26:30,841 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-29 07:26:30,841 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-29 07:26:30,841 INFO  L87              Difference]: Start difference. First operand 38312 states and 50710 transitions. Second operand 7 states.
[2020-10-29 07:26:31,000 WARN  L193               SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 66
[2020-10-29 07:27:00,318 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-29 07:27:00,318 INFO  L93              Difference]: Finished difference Result 105503 states and 143540 transitions.
[2020-10-29 07:27:00,324 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-10-29 07:27:00,324 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 231
[2020-10-29 07:27:00,325 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-29 07:27:00,750 INFO  L225             Difference]: With dead ends: 105503
[2020-10-29 07:27:00,750 INFO  L226             Difference]: Without dead ends: 67197
[2020-10-29 07:27:00,814 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-29 07:27:00,879 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 67197 states.
[2020-10-29 07:27:02,723 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 67197 to 65421.
[2020-10-29 07:27:02,724 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 65421 states.
[2020-10-29 07:27:03,336 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 65421 states to 65421 states and 89560 transitions.
[2020-10-29 07:27:03,338 INFO  L78                 Accepts]: Start accepts. Automaton has 65421 states and 89560 transitions. Word has length 231
[2020-10-29 07:27:03,339 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-29 07:27:03,339 INFO  L481      AbstractCegarLoop]: Abstraction has 65421 states and 89560 transitions.
[2020-10-29 07:27:03,339 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-29 07:27:03,339 INFO  L276                IsEmpty]: Start isEmpty. Operand 65421 states and 89560 transitions.
[2020-10-29 07:27:03,348 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 293
[2020-10-29 07:27:03,349 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 07:27:03,349 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-29 07:27:03,349 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-10-29 07:27:03,350 INFO  L429      AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 07:27:03,350 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 07:27:03,350 INFO  L82        PathProgramCache]: Analyzing trace with hash -2040627048, now seen corresponding path program 1 times
[2020-10-29 07:27:03,350 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 07:27:03,351 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148211712]
[2020-10-29 07:27:03,351 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 07:27:03,606 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 07:27:03,654 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 07:27:03,877 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 07:27:04,994 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 07:27:05,727 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 07:27:06,130 FATAL L256   erpolLogProxyWrapper]: Now shrinking...