/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/reducercommutativity/sep40-1.i


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


This is Ultimate 0.2.0-0f64333
[2020-10-27 04:13:33,184 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-27 04:13:33,188 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-27 04:13:33,243 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-27 04:13:33,244 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-27 04:13:33,250 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-27 04:13:33,253 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-27 04:13:33,257 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-27 04:13:33,261 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-27 04:13:33,267 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2020-10-27 04:13:33,270 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-27 04:13:33,270 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-27 04:13:33,273 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-27 04:13:33,275 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-27 04:13:33,277 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-27 04:13:33,278 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-27 04:13:33,281 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-27 04:13:33,288 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-27 04:13:33,296 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-27 04:13:33,298 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-27 04:13:33,299 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-27 04:13:33,300 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-27 04:13:33,303 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-27 04:13:33,313 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-27 04:13:33,313 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-27 04:13:33,314 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-27 04:13:33,316 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-27 04:13:33,317 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-27 04:13:33,318 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-27 04:13:33,318 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-27 04:13:33,319 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-27 04:13:33,321 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-27 04:13:33,322 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-27 04:13:33,323 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-27 04:13:33,323 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-27 04:13:33,324 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-27 04:13:33,324 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-27 04:13:33,325 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-10-27 04:13:33,326 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-27 04:13:33,334 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 04:13:33,381 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-27 04:13:33,381 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-27 04:13:33,386 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-27 04:13:33,386 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-27 04:13:33,387 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-27 04:13:33,387 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-27 04:13:33,387 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-27 04:13:33,387 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-27 04:13:33,388 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-27 04:13:33,388 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-27 04:13:33,389 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-27 04:13:33,389 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-27 04:13:33,390 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-27 04:13:33,390 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-27 04:13:33,390 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-27 04:13:33,390 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-27 04:13:33,391 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-27 04:13:33,391 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-27 04:13:33,391 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-27 04:13:33,391 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-27 04:13:33,392 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-27 04:13:33,392 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-27 04:13:33,392 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-27 04:13:33,392 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-27 04:13:33,393 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-27 04:13:33,393 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-27 04:13:33,393 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-27 04:13:33,393 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-27 04:13:33,394 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-27 04:13:33,394 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true;
[2020-10-27 04:13:33,814 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-27 04:13:33,849 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-27 04:13:33,853 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-27 04:13:33,854 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-27 04:13:33,855 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-27 04:13:33,856 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sep40-1.i
[2020-10-27 04:13:33,931 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/362db41e9/4f8836c43eba4e9bbf0315af62ed436d/FLAGbe3090623
[2020-10-27 04:13:34,521 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-27 04:13:34,522 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/sep40-1.i
[2020-10-27 04:13:34,530 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/362db41e9/4f8836c43eba4e9bbf0315af62ed436d/FLAGbe3090623
[2020-10-27 04:13:34,842 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/362db41e9/4f8836c43eba4e9bbf0315af62ed436d
[2020-10-27 04:13:34,846 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-27 04:13:34,853 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-27 04:13:34,857 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-27 04:13:34,857 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-27 04:13:34,861 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-27 04:13:34,862 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:13:34" (1/1) ...
[2020-10-27 04:13:34,870 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49e9d8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:34, skipping insertion in model container
[2020-10-27 04:13:34,870 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:13:34" (1/1) ...
[2020-10-27 04:13:34,880 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-27 04:13:34,901 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-27 04:13:35,152 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-27 04:13:35,164 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-27 04:13:35,212 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-27 04:13:35,231 INFO  L208         MainTranslator]: Completed translation
[2020-10-27 04:13:35,233 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:35 WrapperNode
[2020-10-27 04:13:35,233 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-27 04:13:35,234 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-27 04:13:35,234 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-27 04:13:35,235 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-27 04:13:35,248 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:35" (1/1) ...
[2020-10-27 04:13:35,250 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:35" (1/1) ...
[2020-10-27 04:13:35,271 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:35" (1/1) ...
[2020-10-27 04:13:35,271 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:35" (1/1) ...
[2020-10-27 04:13:35,295 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:35" (1/1) ...
[2020-10-27 04:13:35,303 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:35" (1/1) ...
[2020-10-27 04:13:35,305 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:35" (1/1) ...
[2020-10-27 04:13:35,307 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-27 04:13:35,308 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-27 04:13:35,309 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-27 04:13:35,309 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-27 04:13:35,310 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:35" (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 04:13:35,374 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-27 04:13:35,374 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-27 04:13:35,374 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2020-10-27 04:13:35,375 INFO  L138     BoogieDeclarations]: Found implementation of procedure sep
[2020-10-27 04:13:35,375 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-27 04:13:35,375 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-10-27 04:13:35,375 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-27 04:13:35,375 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_perror_fail
[2020-10-27 04:13:35,376 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert
[2020-10-27 04:13:35,376 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2020-10-27 04:13:35,376 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-27 04:13:35,376 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-27 04:13:35,376 INFO  L130     BoogieDeclarations]: Found specification of procedure sep
[2020-10-27 04:13:35,376 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-10-27 04:13:35,377 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-27 04:13:35,377 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-10-27 04:13:35,377 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-27 04:13:35,377 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-27 04:13:35,377 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-27 04:13:35,378 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-27 04:13:35,717 INFO  L293             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-27 04:13:35,717 INFO  L298             CfgBuilder]: Removed 3 assume(true) statements.
[2020-10-27 04:13:35,719 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:13:35 BoogieIcfgContainer
[2020-10-27 04:13:35,719 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-27 04:13:35,721 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-27 04:13:35,721 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-27 04:13:35,725 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-27 04:13:35,725 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:13:34" (1/3) ...
[2020-10-27 04:13:35,726 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cdaa53e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:13:35, skipping insertion in model container
[2020-10-27 04:13:35,726 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:35" (2/3) ...
[2020-10-27 04:13:35,727 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cdaa53e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:13:35, skipping insertion in model container
[2020-10-27 04:13:35,727 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:13:35" (3/3) ...
[2020-10-27 04:13:35,728 INFO  L111   eAbstractionObserver]: Analyzing ICFG sep40-1.i
[2020-10-27 04:13:35,741 INFO  L164   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-27 04:13:35,746 INFO  L176   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-27 04:13:35,760 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-27 04:13:35,786 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2020-10-27 04:13:35,787 INFO  L378      AbstractCegarLoop]: Hoare is true
[2020-10-27 04:13:35,787 INFO  L379      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-27 04:13:35,787 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-27 04:13:35,787 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-27 04:13:35,787 INFO  L382      AbstractCegarLoop]: Difference is false
[2020-10-27 04:13:35,787 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-27 04:13:35,788 INFO  L387      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-27 04:13:35,824 INFO  L276                IsEmpty]: Start isEmpty. Operand 36 states.
[2020-10-27 04:13:35,835 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2020-10-27 04:13:35,835 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 04:13:35,836 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 04:13:35,836 INFO  L429      AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:13:35,843 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:13:35,843 INFO  L82        PathProgramCache]: Analyzing trace with hash -1788891338, now seen corresponding path program 1 times
[2020-10-27 04:13:35,852 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:13:35,853 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359756529]
[2020-10-27 04:13:35,853 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:13:35,993 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:13:36,055 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:36,121 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:36,156 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:36,205 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:36,501 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:36,672 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:37,457 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:13:37,457 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 48
[2020-10-27 04:13:37,457 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 6
[2020-10-27 04:13:37,457 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1454
[2020-10-27 04:13:37,460 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:13:37,460 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:13:37,460 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 12
[2020-10-27 04:13:37,460 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:13:37,461 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-10-27 04:13:37,539 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:13:37,544 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:13:37,546 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:37,549 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:13:37,550 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:13:37,550 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:13:37,550 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-10-27 04:13:37,550 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:13:37,550 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:13:37,551 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:13:37,551 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:13:37,551 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:13:37,556 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-10-27 04:13:37,558 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:13:37,559 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:37,561 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:37,565 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:13:37,565 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-27 04:13:37,566 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:13:37,566 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-10-27 04:13:37,566 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:13:37,566 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:13:37,566 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-10-27 04:13:37,567 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:13:37,567 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:13:37,568 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2020-10-27 04:13:37,571 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:13:37,572 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:37,574 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:37,577 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:13:37,578 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-27 04:13:37,578 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:13:37,578 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-10-27 04:13:37,578 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:13:37,578 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:13:37,579 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-10-27 04:13:37,579 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:13:37,579 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:13:37,581 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-10-27 04:13:37,583 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:13:37,584 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:37,586 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:37,590 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:13:37,590 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-27 04:13:37,590 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:13:37,590 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-10-27 04:13:37,591 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:13:37,591 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:13:37,591 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-10-27 04:13:37,591 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:13:37,591 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:13:37,599 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2020-10-27 04:13:37,599 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359756529]
[2020-10-27 04:13:37,601 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-27 04:13:37,601 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-10-27 04:13:37,602 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848579876]
[2020-10-27 04:13:37,607 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-10-27 04:13:37,607 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:13:37,621 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-10-27 04:13:37,622 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-10-27 04:13:37,624 INFO  L87              Difference]: Start difference. First operand 36 states. Second operand 3 states.
[2020-10-27 04:13:37,720 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:13:37,720 INFO  L93              Difference]: Finished difference Result 62 states and 84 transitions.
[2020-10-27 04:13:37,721 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-10-27 04:13:37,722 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 34
[2020-10-27 04:13:37,723 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:13:37,731 INFO  L225             Difference]: With dead ends: 62
[2020-10-27 04:13:37,731 INFO  L226             Difference]: Without dead ends: 29
[2020-10-27 04:13:37,734 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-10-27 04:13:37,752 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2020-10-27 04:13:37,774 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29.
[2020-10-27 04:13:37,775 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 29 states.
[2020-10-27 04:13:37,777 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions.
[2020-10-27 04:13:37,778 INFO  L78                 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 34
[2020-10-27 04:13:37,778 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:13:37,779 INFO  L481      AbstractCegarLoop]: Abstraction has 29 states and 34 transitions.
[2020-10-27 04:13:37,779 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-10-27 04:13:37,779 INFO  L276                IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions.
[2020-10-27 04:13:37,781 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2020-10-27 04:13:37,781 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 04:13:37,781 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 04:13:37,782 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-27 04:13:37,782 INFO  L429      AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:13:37,783 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:13:37,783 INFO  L82        PathProgramCache]: Analyzing trace with hash 1899018129, now seen corresponding path program 1 times
[2020-10-27 04:13:37,783 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:13:37,783 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903830669]
[2020-10-27 04:13:37,784 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:13:37,796 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:13:37,801 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:37,814 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:37,830 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:37,844 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:37,905 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:38,149 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:39,364 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:13:39,364 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 48
[2020-10-27 04:13:39,364 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 6
[2020-10-27 04:13:39,365 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1567
[2020-10-27 04:13:39,365 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:13:39,365 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-27 04:13:39,365 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:13:39,365 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-27 04:13:39,365 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:13:39,399 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:13:39,401 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:13:39,402 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:39,405 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:13:39,405 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:13:39,405 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:13:39,405 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-27 04:13:39,406 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:13:39,406 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:13:39,406 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:13:39,406 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:13:39,406 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:13:39,409 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-10-27 04:13:39,411 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:13:39,412 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:39,413 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:39,419 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:13:39,419 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-27 04:13:39,420 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:13:39,420 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-10-27 04:13:39,420 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:13:39,420 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-27 04:13:39,420 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:13:39,421 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-27 04:13:39,421 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:13:39,429 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2020-10-27 04:13:39,431 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:13:39,432 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:39,434 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:39,439 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:13:39,439 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-27 04:13:39,440 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:13:39,440 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-10-27 04:13:39,440 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:13:39,440 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-27 04:13:39,441 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:13:39,441 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-27 04:13:39,441 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:13:39,443 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-10-27 04:13:39,445 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:13:39,446 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:39,449 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:39,454 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:13:39,454 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-27 04:13:39,454 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:13:39,455 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-10-27 04:13:39,455 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:13:39,455 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-27 04:13:39,455 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:13:39,455 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-27 04:13:39,456 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:13:39,462 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2020-10-27 04:13:39,463 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903830669]
[2020-10-27 04:13:39,463 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-27 04:13:39,463 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-10-27 04:13:39,464 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846101914]
[2020-10-27 04:13:39,468 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-27 04:13:39,469 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:13:39,469 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-27 04:13:39,470 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-10-27 04:13:39,470 INFO  L87              Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 5 states.
[2020-10-27 04:13:39,664 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:13:39,664 INFO  L93              Difference]: Finished difference Result 55 states and 70 transitions.
[2020-10-27 04:13:39,665 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-27 04:13:39,665 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 34
[2020-10-27 04:13:39,665 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:13:39,666 INFO  L225             Difference]: With dead ends: 55
[2020-10-27 04:13:39,666 INFO  L226             Difference]: Without dead ends: 34
[2020-10-27 04:13:39,669 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-10-27 04:13:39,669 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 34 states.
[2020-10-27 04:13:39,683 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31.
[2020-10-27 04:13:39,684 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 31 states.
[2020-10-27 04:13:39,689 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions.
[2020-10-27 04:13:39,689 INFO  L78                 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 34
[2020-10-27 04:13:39,690 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:13:39,690 INFO  L481      AbstractCegarLoop]: Abstraction has 31 states and 36 transitions.
[2020-10-27 04:13:39,690 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-27 04:13:39,690 INFO  L276                IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions.
[2020-10-27 04:13:39,694 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2020-10-27 04:13:39,694 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 04:13:39,694 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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 04:13:39,695 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-27 04:13:39,695 INFO  L429      AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:13:39,696 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:13:39,696 INFO  L82        PathProgramCache]: Analyzing trace with hash -1088396992, now seen corresponding path program 1 times
[2020-10-27 04:13:39,697 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:13:39,698 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705261344]
[2020-10-27 04:13:39,700 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:13:39,718 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:13:39,728 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:39,742 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:39,766 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:39,783 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:39,919 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:40,950 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:44,729 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:13:44,730 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 59
[2020-10-27 04:13:44,730 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 6
[2020-10-27 04:13:44,730 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5009
[2020-10-27 04:13:44,730 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:13:44,730 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-10-27 04:13:44,731 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:13:44,731 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-27 04:13:44,731 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:13:44,767 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:13:44,770 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:13:44,771 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:44,773 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:13:44,774 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:13:44,774 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:13:44,774 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-27 04:13:44,774 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:13:44,774 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:13:44,775 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:13:44,775 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:13:44,775 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:13:44,777 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-10-27 04:13:44,781 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:13:44,783 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:44,787 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:44,804 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:13:44,804 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-10-27 04:13:44,805 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:13:44,805 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 22
[2020-10-27 04:13:44,805 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:13:44,805 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-10-27 04:13:44,805 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:13:44,806 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-10-27 04:13:44,806 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:13:44,824 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2020-10-27 04:13:44,827 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:13:44,830 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:44,834 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:44,851 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:13:44,851 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-10-27 04:13:44,851 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:13:44,851 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 22
[2020-10-27 04:13:44,852 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:13:44,852 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-10-27 04:13:44,852 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:13:44,852 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-10-27 04:13:44,852 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:13:44,856 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31
[2020-10-27 04:13:44,858 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:13:44,860 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:44,865 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:44,881 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:13:44,882 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-10-27 04:13:44,882 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:13:44,882 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 22
[2020-10-27 04:13:44,882 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:13:44,883 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-10-27 04:13:44,883 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:13:44,883 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-10-27 04:13:44,883 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:13:44,890 INFO  L134       CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2020-10-27 04:13:44,890 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705261344]
[2020-10-27 04:13:44,891 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 04:13:44,891 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-27 04:13:44,891 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918901769]
[2020-10-27 04:13:44,892 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-27 04:13:44,892 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:13:44,893 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-27 04:13:44,893 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2020-10-27 04:13:44,893 INFO  L87              Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 7 states.
[2020-10-27 04:13:45,075 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:13:45,076 INFO  L93              Difference]: Finished difference Result 61 states and 77 transitions.
[2020-10-27 04:13:45,076 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-10-27 04:13:45,076 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 45
[2020-10-27 04:13:45,077 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:13:45,078 INFO  L225             Difference]: With dead ends: 61
[2020-10-27 04:13:45,078 INFO  L226             Difference]: Without dead ends: 39
[2020-10-27 04:13:45,079 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72
[2020-10-27 04:13:45,079 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2020-10-27 04:13:45,086 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36.
[2020-10-27 04:13:45,086 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 36 states.
[2020-10-27 04:13:45,087 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions.
[2020-10-27 04:13:45,088 INFO  L78                 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 45
[2020-10-27 04:13:45,088 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:13:45,088 INFO  L481      AbstractCegarLoop]: Abstraction has 36 states and 42 transitions.
[2020-10-27 04:13:45,088 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-27 04:13:45,088 INFO  L276                IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions.
[2020-10-27 04:13:45,089 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 57
[2020-10-27 04:13:45,090 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 04:13:45,090 INFO  L422         BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 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 04:13:45,090 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-27 04:13:45,090 INFO  L429      AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:13:45,091 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:13:45,091 INFO  L82        PathProgramCache]: Analyzing trace with hash -1287598475, now seen corresponding path program 2 times
[2020-10-27 04:13:45,091 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:13:45,091 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943556361]
[2020-10-27 04:13:45,092 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:13:45,110 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:13:45,124 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:45,148 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:45,173 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:45,194 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:47,098 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:50,132 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:13:50,132 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 70
[2020-10-27 04:13:50,132 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 5
[2020-10-27 04:13:50,132 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5020
[2020-10-27 04:13:50,132 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:13:50,133 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-27 04:13:50,133 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:13:50,133 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-10-27 04:13:50,133 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:13:50,203 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:13:50,205 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:13:50,206 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:50,210 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:13:50,210 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:13:50,210 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:13:50,213 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-10-27 04:13:50,213 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:13:50,213 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:13:50,213 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:13:50,213 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:13:50,214 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:13:50,216 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2020-10-27 04:13:50,221 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:13:50,224 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:50,229 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:50,285 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:13:50,285 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 16
[2020-10-27 04:13:50,288 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:13:50,288 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 63
[2020-10-27 04:13:50,288 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:13:50,289 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-27 04:13:50,289 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:13:50,289 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-10-27 04:13:50,289 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:13:50,336 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24
[2020-10-27 04:13:50,344 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:13:50,351 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:50,356 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:50,405 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:13:50,405 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 16
[2020-10-27 04:13:50,405 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:13:50,406 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 59
[2020-10-27 04:13:50,406 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:13:50,406 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-27 04:13:50,406 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:13:50,407 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-10-27 04:13:50,407 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:13:50,415 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39
[2020-10-27 04:13:50,420 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:13:50,423 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:50,429 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:50,477 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:13:50,478 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 16
[2020-10-27 04:13:50,478 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:13:50,478 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 56
[2020-10-27 04:13:50,479 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:13:50,479 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-27 04:13:50,479 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:13:50,479 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-10-27 04:13:50,479 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:13:50,494 INFO  L134       CoverageAnalysis]: Checked inductivity of 82 backedges. 15 proven. 34 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked.
[2020-10-27 04:13:50,495 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943556361]
[2020-10-27 04:13:50,495 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 04:13:50,495 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9
[2020-10-27 04:13:50,496 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868611766]
[2020-10-27 04:13:50,496 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-10-27 04:13:50,497 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:13:50,499 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-10-27 04:13:50,500 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72
[2020-10-27 04:13:50,500 INFO  L87              Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 9 states.
[2020-10-27 04:13:50,774 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:13:50,774 INFO  L93              Difference]: Finished difference Result 69 states and 87 transitions.
[2020-10-27 04:13:50,775 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-10-27 04:13:50,775 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 56
[2020-10-27 04:13:50,775 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:13:50,776 INFO  L225             Difference]: With dead ends: 69
[2020-10-27 04:13:50,776 INFO  L226             Difference]: Without dead ends: 44
[2020-10-27 04:13:50,777 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132
[2020-10-27 04:13:50,778 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 44 states.
[2020-10-27 04:13:50,784 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41.
[2020-10-27 04:13:50,784 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 41 states.
[2020-10-27 04:13:50,785 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions.
[2020-10-27 04:13:50,786 INFO  L78                 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 56
[2020-10-27 04:13:50,786 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:13:50,786 INFO  L481      AbstractCegarLoop]: Abstraction has 41 states and 48 transitions.
[2020-10-27 04:13:50,786 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-10-27 04:13:50,786 INFO  L276                IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions.
[2020-10-27 04:13:50,787 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2020-10-27 04:13:50,787 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 04:13:50,788 INFO  L422         BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 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 04:13:50,788 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-27 04:13:50,788 INFO  L429      AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:13:50,788 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:13:50,789 INFO  L82        PathProgramCache]: Analyzing trace with hash 317614428, now seen corresponding path program 3 times
[2020-10-27 04:13:50,789 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:13:50,789 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723549728]
[2020-10-27 04:13:50,789 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:13:50,812 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:13:50,826 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:50,862 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:50,893 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:50,921 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:55,199 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:55,820 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:13:55,821 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 81
[2020-10-27 04:13:55,821 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 5
[2020-10-27 04:13:55,821 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5006
[2020-10-27 04:13:55,821 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:13:55,821 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-10-27 04:13:55,821 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:13:55,822 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-10-27 04:13:55,822 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:13:55,896 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:13:55,898 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:13:55,899 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:55,903 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:13:55,903 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:13:55,903 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:13:55,903 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-10-27 04:13:55,903 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:13:55,903 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:13:55,904 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:13:55,904 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:13:55,904 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:13:55,906 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13
[2020-10-27 04:13:55,911 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:13:55,917 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:55,922 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:55,983 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:13:55,984 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 19
[2020-10-27 04:13:55,984 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:13:55,984 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 70
[2020-10-27 04:13:55,984 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:13:55,984 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-10-27 04:13:55,984 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:13:55,985 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 11
[2020-10-27 04:13:55,985 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:13:56,030 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29
[2020-10-27 04:13:56,034 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:13:56,037 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:56,042 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:56,105 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:13:56,106 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 19
[2020-10-27 04:13:56,106 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:13:56,106 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 70
[2020-10-27 04:13:56,106 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:13:56,106 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-10-27 04:13:56,106 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:13:56,107 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 11
[2020-10-27 04:13:56,107 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:13:56,116 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47
[2020-10-27 04:13:56,120 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:13:56,124 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:56,129 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:56,194 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:13:56,194 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 19
[2020-10-27 04:13:56,194 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:13:56,194 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 72
[2020-10-27 04:13:56,195 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:13:56,195 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-10-27 04:13:56,195 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:13:56,195 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 11
[2020-10-27 04:13:56,195 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:13:56,214 INFO  L134       CoverageAnalysis]: Checked inductivity of 159 backedges. 36 proven. 81 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked.
[2020-10-27 04:13:56,215 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723549728]
[2020-10-27 04:13:56,215 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 04:13:56,215 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11
[2020-10-27 04:13:56,216 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524673730]
[2020-10-27 04:13:56,217 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-10-27 04:13:56,217 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:13:56,217 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-10-27 04:13:56,218 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110
[2020-10-27 04:13:56,218 INFO  L87              Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 11 states.
[2020-10-27 04:13:56,507 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:13:56,507 INFO  L93              Difference]: Finished difference Result 77 states and 97 transitions.
[2020-10-27 04:13:56,507 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-27 04:13:56,507 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 67
[2020-10-27 04:13:56,508 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:13:56,508 INFO  L225             Difference]: With dead ends: 77
[2020-10-27 04:13:56,509 INFO  L226             Difference]: Without dead ends: 49
[2020-10-27 04:13:56,510 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210
[2020-10-27 04:13:56,511 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2020-10-27 04:13:56,522 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46.
[2020-10-27 04:13:56,522 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 46 states.
[2020-10-27 04:13:56,524 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions.
[2020-10-27 04:13:56,524 INFO  L78                 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 67
[2020-10-27 04:13:56,524 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:13:56,525 INFO  L481      AbstractCegarLoop]: Abstraction has 46 states and 54 transitions.
[2020-10-27 04:13:56,525 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-10-27 04:13:56,525 INFO  L276                IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions.
[2020-10-27 04:13:56,529 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 79
[2020-10-27 04:13:56,529 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 04:13:56,529 INFO  L422         BasicCegarLoop]: trace histogram [12, 12, 12, 4, 4, 3, 3, 3, 3, 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 04:13:56,529 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-10-27 04:13:56,529 INFO  L429      AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:13:56,530 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:13:56,531 INFO  L82        PathProgramCache]: Analyzing trace with hash 58083673, now seen corresponding path program 4 times
[2020-10-27 04:13:56,531 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:13:56,532 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685312224]
[2020-10-27 04:13:56,532 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:13:56,558 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:13:56,575 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:56,602 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:56,635 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:13:56,664 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:01,579 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:01,579 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 92
[2020-10-27 04:14:01,579 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-27 04:14:01,579 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5015
[2020-10-27 04:14:01,580 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:01,580 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-27 04:14:01,580 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:14:01,580 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-10-27 04:14:01,580 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:01,645 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:14:01,647 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:01,650 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:01,654 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:01,654 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:14:01,654 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:14:01,654 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-10-27 04:14:01,654 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:01,655 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:14:01,655 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:14:01,655 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:14:01,655 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:01,658 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2020-10-27 04:14:01,663 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:01,667 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:01,673 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:01,762 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:01,763 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 22
[2020-10-27 04:14:01,763 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:14:01,763 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 99
[2020-10-27 04:14:01,763 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:01,763 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-27 04:14:01,764 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:14:01,764 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 14
[2020-10-27 04:14:01,764 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:01,828 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34
[2020-10-27 04:14:01,837 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:01,841 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:01,846 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:01,928 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:01,929 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 22
[2020-10-27 04:14:01,929 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:14:01,929 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 90
[2020-10-27 04:14:01,929 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:01,929 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-27 04:14:01,929 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:14:01,930 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 14
[2020-10-27 04:14:01,930 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:01,941 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55
[2020-10-27 04:14:01,946 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:01,949 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:01,954 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:02,040 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:02,041 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 22
[2020-10-27 04:14:02,041 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:14:02,041 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 94
[2020-10-27 04:14:02,041 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:02,042 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-27 04:14:02,042 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:14:02,042 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 14
[2020-10-27 04:14:02,042 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:02,062 INFO  L134       CoverageAnalysis]: Checked inductivity of 265 backedges. 66 proven. 148 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked.
[2020-10-27 04:14:02,062 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685312224]
[2020-10-27 04:14:02,064 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 04:14:02,064 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13
[2020-10-27 04:14:02,064 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068300455]
[2020-10-27 04:14:02,065 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-27 04:14:02,066 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:14:02,066 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-27 04:14:02,067 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156
[2020-10-27 04:14:02,067 INFO  L87              Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 13 states.
[2020-10-27 04:14:02,394 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:14:02,394 INFO  L93              Difference]: Finished difference Result 85 states and 107 transitions.
[2020-10-27 04:14:02,394 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-10-27 04:14:02,394 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 78
[2020-10-27 04:14:02,395 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:14:02,396 INFO  L225             Difference]: With dead ends: 85
[2020-10-27 04:14:02,396 INFO  L226             Difference]: Without dead ends: 54
[2020-10-27 04:14:02,397 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306
[2020-10-27 04:14:02,397 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 54 states.
[2020-10-27 04:14:02,403 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51.
[2020-10-27 04:14:02,404 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 51 states.
[2020-10-27 04:14:02,404 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions.
[2020-10-27 04:14:02,404 INFO  L78                 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 78
[2020-10-27 04:14:02,405 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:14:02,405 INFO  L481      AbstractCegarLoop]: Abstraction has 51 states and 60 transitions.
[2020-10-27 04:14:02,405 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-27 04:14:02,405 INFO  L276                IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions.
[2020-10-27 04:14:02,406 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 90
[2020-10-27 04:14:02,407 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 04:14:02,407 INFO  L422         BasicCegarLoop]: trace histogram [15, 15, 15, 5, 5, 3, 3, 3, 3, 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 04:14:02,407 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-10-27 04:14:02,407 INFO  L429      AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:14:02,407 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:14:02,408 INFO  L82        PathProgramCache]: Analyzing trace with hash -34804360, now seen corresponding path program 5 times
[2020-10-27 04:14:02,408 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:14:02,408 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225847616]
[2020-10-27 04:14:02,408 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:14:02,431 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:02,450 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:02,486 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:02,518 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:02,548 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:07,448 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:07,448 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 103
[2020-10-27 04:14:07,448 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-27 04:14:07,448 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5014
[2020-10-27 04:14:07,449 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:07,449 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-10-27 04:14:07,449 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:14:07,449 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 12
[2020-10-27 04:14:07,449 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:07,532 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:14:07,534 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:07,535 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:07,537 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:07,538 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:14:07,538 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:14:07,538 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-27 04:14:07,538 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:07,538 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:14:07,538 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:14:07,539 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:14:07,539 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:07,540 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2020-10-27 04:14:07,548 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:07,552 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:07,558 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:07,666 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:07,666 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-10-27 04:14:07,666 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:14:07,666 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 117
[2020-10-27 04:14:07,666 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:07,667 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-10-27 04:14:07,667 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:14:07,667 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 17
[2020-10-27 04:14:07,667 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:07,737 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39
[2020-10-27 04:14:07,742 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:07,746 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:07,753 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:07,883 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:07,884 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-10-27 04:14:07,884 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:14:07,884 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 140
[2020-10-27 04:14:07,884 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:07,884 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-10-27 04:14:07,884 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:14:07,884 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 17
[2020-10-27 04:14:07,885 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:07,892 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63
[2020-10-27 04:14:07,898 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:07,902 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:07,908 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:08,011 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:08,011 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-10-27 04:14:08,011 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:14:08,011 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 112
[2020-10-27 04:14:08,011 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:08,011 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-10-27 04:14:08,012 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:14:08,012 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 17
[2020-10-27 04:14:08,012 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:08,036 INFO  L134       CoverageAnalysis]: Checked inductivity of 400 backedges. 105 proven. 235 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked.
[2020-10-27 04:14:08,036 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225847616]
[2020-10-27 04:14:08,036 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 04:14:08,037 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15
[2020-10-27 04:14:08,037 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646905413]
[2020-10-27 04:14:08,037 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-27 04:14:08,038 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:14:08,038 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-27 04:14:08,038 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210
[2020-10-27 04:14:08,039 INFO  L87              Difference]: Start difference. First operand 51 states and 60 transitions. Second operand 15 states.
[2020-10-27 04:14:08,449 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:14:08,449 INFO  L93              Difference]: Finished difference Result 93 states and 117 transitions.
[2020-10-27 04:14:08,450 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-10-27 04:14:08,450 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 89
[2020-10-27 04:14:08,450 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:14:08,452 INFO  L225             Difference]: With dead ends: 93
[2020-10-27 04:14:08,452 INFO  L226             Difference]: Without dead ends: 59
[2020-10-27 04:14:08,453 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420
[2020-10-27 04:14:08,454 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 59 states.
[2020-10-27 04:14:08,461 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56.
[2020-10-27 04:14:08,461 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 56 states.
[2020-10-27 04:14:08,462 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions.
[2020-10-27 04:14:08,462 INFO  L78                 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 89
[2020-10-27 04:14:08,463 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:14:08,463 INFO  L481      AbstractCegarLoop]: Abstraction has 56 states and 66 transitions.
[2020-10-27 04:14:08,463 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-27 04:14:08,463 INFO  L276                IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions.
[2020-10-27 04:14:08,464 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 101
[2020-10-27 04:14:08,464 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 04:14:08,465 INFO  L422         BasicCegarLoop]: trace histogram [18, 18, 18, 6, 6, 3, 3, 3, 3, 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 04:14:08,465 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2020-10-27 04:14:08,465 INFO  L429      AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:14:08,465 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:14:08,465 INFO  L82        PathProgramCache]: Analyzing trace with hash 1929013309, now seen corresponding path program 6 times
[2020-10-27 04:14:08,466 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:14:08,466 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948283552]
[2020-10-27 04:14:08,466 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:14:08,491 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:08,510 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:08,543 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:08,578 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:08,611 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:13,511 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:13,512 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 114
[2020-10-27 04:14:13,512 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-27 04:14:13,512 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5018
[2020-10-27 04:14:13,512 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:13,512 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-10-27 04:14:13,512 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:14:13,512 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 14
[2020-10-27 04:14:13,513 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:13,619 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:14:13,621 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:13,622 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:13,624 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:13,624 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:14:13,624 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:14:13,625 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-27 04:14:13,625 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:13,625 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:14:13,625 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:14:13,625 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:14:13,625 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:13,630 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2020-10-27 04:14:13,637 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:13,641 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:13,648 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:13,814 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:13,814 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 28
[2020-10-27 04:14:13,815 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:14:13,815 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 176
[2020-10-27 04:14:13,815 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:13,815 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-10-27 04:14:13,815 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:14:13,815 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-10-27 04:14:13,815 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:13,935 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44
[2020-10-27 04:14:13,940 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:13,944 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:13,949 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:14,053 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:14,053 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 28
[2020-10-27 04:14:14,054 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:14:14,054 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 112
[2020-10-27 04:14:14,054 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:14,054 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-10-27 04:14:14,054 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:14:14,054 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-10-27 04:14:14,054 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:14,063 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71
[2020-10-27 04:14:14,069 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:14,073 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:14,080 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:14,186 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:14,186 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 28
[2020-10-27 04:14:14,186 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:14:14,187 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 117
[2020-10-27 04:14:14,187 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:14,187 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-10-27 04:14:14,187 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:14:14,187 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-10-27 04:14:14,187 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:14,206 INFO  L134       CoverageAnalysis]: Checked inductivity of 564 backedges. 153 proven. 342 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked.
[2020-10-27 04:14:14,206 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948283552]
[2020-10-27 04:14:14,206 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 04:14:14,206 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17
[2020-10-27 04:14:14,207 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41025598]
[2020-10-27 04:14:14,207 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-27 04:14:14,207 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:14:14,208 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-27 04:14:14,208 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272
[2020-10-27 04:14:14,208 INFO  L87              Difference]: Start difference. First operand 56 states and 66 transitions. Second operand 17 states.
[2020-10-27 04:14:14,812 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:14:14,813 INFO  L93              Difference]: Finished difference Result 101 states and 127 transitions.
[2020-10-27 04:14:14,813 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2020-10-27 04:14:14,813 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 100
[2020-10-27 04:14:14,813 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:14:14,814 INFO  L225             Difference]: With dead ends: 101
[2020-10-27 04:14:14,814 INFO  L226             Difference]: Without dead ends: 64
[2020-10-27 04:14:14,818 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552
[2020-10-27 04:14:14,818 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 64 states.
[2020-10-27 04:14:14,832 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61.
[2020-10-27 04:14:14,834 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 61 states.
[2020-10-27 04:14:14,835 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 72 transitions.
[2020-10-27 04:14:14,836 INFO  L78                 Accepts]: Start accepts. Automaton has 61 states and 72 transitions. Word has length 100
[2020-10-27 04:14:14,836 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:14:14,836 INFO  L481      AbstractCegarLoop]: Abstraction has 61 states and 72 transitions.
[2020-10-27 04:14:14,836 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-27 04:14:14,836 INFO  L276                IsEmpty]: Start isEmpty. Operand 61 states and 72 transitions.
[2020-10-27 04:14:14,841 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 112
[2020-10-27 04:14:14,841 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 04:14:14,841 INFO  L422         BasicCegarLoop]: trace histogram [21, 21, 21, 7, 7, 3, 3, 3, 3, 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 04:14:14,842 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2020-10-27 04:14:14,842 INFO  L429      AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:14:14,842 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:14:14,842 INFO  L82        PathProgramCache]: Analyzing trace with hash 506637716, now seen corresponding path program 7 times
[2020-10-27 04:14:14,843 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:14:14,845 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555540767]
[2020-10-27 04:14:14,845 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:14:14,877 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:14,899 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:14,936 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:14,976 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:15,009 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:19,900 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:19,900 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 125
[2020-10-27 04:14:19,901 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-27 04:14:19,901 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5020
[2020-10-27 04:14:19,901 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:19,901 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-10-27 04:14:19,901 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:14:19,901 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 16
[2020-10-27 04:14:19,901 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:20,010 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:14:20,012 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:20,013 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:20,017 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:20,017 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:14:20,017 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:14:20,018 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-10-27 04:14:20,018 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:20,018 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:14:20,018 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:14:20,018 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:14:20,018 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:20,020 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-10-27 04:14:20,026 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:20,030 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:20,036 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:20,179 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:20,179 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 31
[2020-10-27 04:14:20,179 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:14:20,179 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 152
[2020-10-27 04:14:20,180 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:20,180 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-10-27 04:14:20,180 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:14:20,180 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 23
[2020-10-27 04:14:20,180 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:20,323 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49
[2020-10-27 04:14:20,330 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:20,335 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:20,343 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:20,464 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:20,464 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 31
[2020-10-27 04:14:20,464 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:14:20,464 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 133
[2020-10-27 04:14:20,464 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:20,465 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-10-27 04:14:20,465 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:14:20,465 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 23
[2020-10-27 04:14:20,465 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:20,471 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79
[2020-10-27 04:14:20,477 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:20,480 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:20,486 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:20,612 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:20,613 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 31
[2020-10-27 04:14:20,613 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:14:20,613 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 135
[2020-10-27 04:14:20,613 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:20,613 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-10-27 04:14:20,613 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:14:20,613 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 23
[2020-10-27 04:14:20,613 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:20,631 INFO  L134       CoverageAnalysis]: Checked inductivity of 757 backedges. 210 proven. 469 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked.
[2020-10-27 04:14:20,631 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555540767]
[2020-10-27 04:14:20,631 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 04:14:20,632 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19
[2020-10-27 04:14:20,632 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651115714]
[2020-10-27 04:14:20,632 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 19 states
[2020-10-27 04:14:20,633 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:14:20,633 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2020-10-27 04:14:20,634 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342
[2020-10-27 04:14:20,634 INFO  L87              Difference]: Start difference. First operand 61 states and 72 transitions. Second operand 19 states.
[2020-10-27 04:14:21,226 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:14:21,227 INFO  L93              Difference]: Finished difference Result 109 states and 137 transitions.
[2020-10-27 04:14:21,227 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2020-10-27 04:14:21,227 INFO  L78                 Accepts]: Start accepts. Automaton has 19 states. Word has length 111
[2020-10-27 04:14:21,227 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:14:21,228 INFO  L225             Difference]: With dead ends: 109
[2020-10-27 04:14:21,228 INFO  L226             Difference]: Without dead ends: 69
[2020-10-27 04:14:21,231 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702
[2020-10-27 04:14:21,231 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 69 states.
[2020-10-27 04:14:21,240 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 66.
[2020-10-27 04:14:21,240 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 66 states.
[2020-10-27 04:14:21,241 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions.
[2020-10-27 04:14:21,241 INFO  L78                 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 111
[2020-10-27 04:14:21,241 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:14:21,241 INFO  L481      AbstractCegarLoop]: Abstraction has 66 states and 78 transitions.
[2020-10-27 04:14:21,241 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 19 states.
[2020-10-27 04:14:21,241 INFO  L276                IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions.
[2020-10-27 04:14:21,242 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 123
[2020-10-27 04:14:21,242 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 04:14:21,243 INFO  L422         BasicCegarLoop]: trace histogram [24, 24, 24, 8, 8, 3, 3, 3, 3, 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 04:14:21,243 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2020-10-27 04:14:21,243 INFO  L429      AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:14:21,245 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:14:21,245 INFO  L82        PathProgramCache]: Analyzing trace with hash 234253089, now seen corresponding path program 8 times
[2020-10-27 04:14:21,245 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:14:21,246 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262273172]
[2020-10-27 04:14:21,246 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:14:21,291 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:21,312 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:21,351 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:21,396 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:21,436 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:26,293 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:26,293 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 136
[2020-10-27 04:14:26,294 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-27 04:14:26,294 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5000
[2020-10-27 04:14:26,294 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:26,294 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 10
[2020-10-27 04:14:26,294 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:14:26,294 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 18
[2020-10-27 04:14:26,294 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:26,415 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:14:26,417 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:26,419 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:26,421 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:26,421 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:14:26,422 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:14:26,422 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-27 04:14:26,422 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:26,422 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:14:26,422 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:14:26,423 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:14:26,423 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:26,425 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-10-27 04:14:26,432 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:26,438 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:26,448 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:26,673 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:26,673 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 34
[2020-10-27 04:14:26,673 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:14:26,674 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 240
[2020-10-27 04:14:26,674 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:26,675 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 10
[2020-10-27 04:14:26,675 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:14:26,675 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 26
[2020-10-27 04:14:26,675 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:26,825 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54
[2020-10-27 04:14:26,832 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:26,837 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:26,846 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:26,992 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:26,993 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 34
[2020-10-27 04:14:26,993 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:14:26,993 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 159
[2020-10-27 04:14:26,993 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:26,993 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 10
[2020-10-27 04:14:26,994 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:14:26,994 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 26
[2020-10-27 04:14:26,994 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-27 04:14:27,005 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87
[2020-10-27 04:14:27,015 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:27,020 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:27,031 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:27,325 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:27,325 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 34
[2020-10-27 04:14:27,325 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:14:27,325 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 309
[2020-10-27 04:14:27,326 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:27,326 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 10
[2020-10-27 04:14:27,326 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:14:27,326 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 26
[2020-10-27 04:14:27,326 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:27,365 INFO  L134       CoverageAnalysis]: Checked inductivity of 979 backedges. 276 proven. 616 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked.
[2020-10-27 04:14:27,366 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262273172]
[2020-10-27 04:14:27,366 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 04:14:27,366 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21
[2020-10-27 04:14:27,367 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215409389]
[2020-10-27 04:14:27,367 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 21 states
[2020-10-27 04:14:27,368 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:14:27,368 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2020-10-27 04:14:27,369 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420
[2020-10-27 04:14:27,369 INFO  L87              Difference]: Start difference. First operand 66 states and 78 transitions. Second operand 21 states.
[2020-10-27 04:14:27,984 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:14:27,984 INFO  L93              Difference]: Finished difference Result 117 states and 147 transitions.
[2020-10-27 04:14:27,984 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. 
[2020-10-27 04:14:27,984 INFO  L78                 Accepts]: Start accepts. Automaton has 21 states. Word has length 122
[2020-10-27 04:14:27,985 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:14:27,985 INFO  L225             Difference]: With dead ends: 117
[2020-10-27 04:14:27,985 INFO  L226             Difference]: Without dead ends: 74
[2020-10-27 04:14:27,986 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=219, Invalid=651, Unknown=0, NotChecked=0, Total=870
[2020-10-27 04:14:27,987 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 74 states.
[2020-10-27 04:14:27,993 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71.
[2020-10-27 04:14:27,994 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 71 states.
[2020-10-27 04:14:27,999 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 84 transitions.
[2020-10-27 04:14:27,999 INFO  L78                 Accepts]: Start accepts. Automaton has 71 states and 84 transitions. Word has length 122
[2020-10-27 04:14:27,999 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:14:28,000 INFO  L481      AbstractCegarLoop]: Abstraction has 71 states and 84 transitions.
[2020-10-27 04:14:28,000 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 21 states.
[2020-10-27 04:14:28,000 INFO  L276                IsEmpty]: Start isEmpty. Operand 71 states and 84 transitions.
[2020-10-27 04:14:28,001 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 134
[2020-10-27 04:14:28,001 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 04:14:28,001 INFO  L422         BasicCegarLoop]: trace histogram [27, 27, 27, 9, 9, 3, 3, 3, 3, 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 04:14:28,001 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2020-10-27 04:14:28,002 INFO  L429      AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:14:28,007 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:14:28,007 INFO  L82        PathProgramCache]: Analyzing trace with hash 349596080, now seen corresponding path program 9 times
[2020-10-27 04:14:28,008 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:14:28,008 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649714315]
[2020-10-27 04:14:28,008 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:14:28,040 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:28,061 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:28,103 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:28,152 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:28,194 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:33,068 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:33,069 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 147
[2020-10-27 04:14:33,069 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-27 04:14:33,069 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5026
[2020-10-27 04:14:33,069 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:33,069 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 11
[2020-10-27 04:14:33,069 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:14:33,069 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-10-27 04:14:33,069 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:33,197 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:14:33,198 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:33,199 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:33,201 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:33,201 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:14:33,201 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:14:33,202 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-27 04:14:33,202 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:33,202 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:14:33,202 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:14:33,202 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:14:33,202 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:33,208 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2020-10-27 04:14:33,220 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:33,226 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:33,236 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:33,521 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:33,521 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 37
[2020-10-27 04:14:33,523 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:14:33,523 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 300
[2020-10-27 04:14:33,523 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:33,523 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 11
[2020-10-27 04:14:33,523 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:14:33,523 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 29
[2020-10-27 04:14:33,524 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:33,699 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59
[2020-10-27 04:14:33,708 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:33,715 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:33,725 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:33,975 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:33,975 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 37
[2020-10-27 04:14:33,976 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:14:33,976 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 266
[2020-10-27 04:14:33,976 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:33,976 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 11
[2020-10-27 04:14:33,976 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:14:33,976 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 29
[2020-10-27 04:14:33,976 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:33,985 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95
[2020-10-27 04:14:33,990 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:33,994 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:34,002 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:34,183 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:34,183 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 37
[2020-10-27 04:14:34,183 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:14:34,183 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 192
[2020-10-27 04:14:34,183 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:34,183 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 11
[2020-10-27 04:14:34,183 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:14:34,183 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 29
[2020-10-27 04:14:34,183 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:34,210 INFO  L134       CoverageAnalysis]: Checked inductivity of 1230 backedges. 351 proven. 783 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked.
[2020-10-27 04:14:34,211 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649714315]
[2020-10-27 04:14:34,211 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 04:14:34,211 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23
[2020-10-27 04:14:34,211 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323020111]
[2020-10-27 04:14:34,212 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 23 states
[2020-10-27 04:14:34,212 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:14:34,213 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2020-10-27 04:14:34,213 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506
[2020-10-27 04:14:34,213 INFO  L87              Difference]: Start difference. First operand 71 states and 84 transitions. Second operand 23 states.
[2020-10-27 04:14:34,942 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:14:34,943 INFO  L93              Difference]: Finished difference Result 125 states and 157 transitions.
[2020-10-27 04:14:34,943 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. 
[2020-10-27 04:14:34,943 INFO  L78                 Accepts]: Start accepts. Automaton has 23 states. Word has length 133
[2020-10-27 04:14:34,943 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:14:34,945 INFO  L225             Difference]: With dead ends: 125
[2020-10-27 04:14:34,945 INFO  L226             Difference]: Without dead ends: 79
[2020-10-27 04:14:34,947 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056
[2020-10-27 04:14:34,947 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 79 states.
[2020-10-27 04:14:34,954 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76.
[2020-10-27 04:14:34,954 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 76 states.
[2020-10-27 04:14:34,955 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 90 transitions.
[2020-10-27 04:14:34,955 INFO  L78                 Accepts]: Start accepts. Automaton has 76 states and 90 transitions. Word has length 133
[2020-10-27 04:14:34,955 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:14:34,955 INFO  L481      AbstractCegarLoop]: Abstraction has 76 states and 90 transitions.
[2020-10-27 04:14:34,955 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 23 states.
[2020-10-27 04:14:34,956 INFO  L276                IsEmpty]: Start isEmpty. Operand 76 states and 90 transitions.
[2020-10-27 04:14:34,957 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 145
[2020-10-27 04:14:34,957 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 04:14:34,957 INFO  L422         BasicCegarLoop]: trace histogram [30, 30, 30, 10, 10, 3, 3, 3, 3, 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 04:14:34,957 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2020-10-27 04:14:34,958 INFO  L429      AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:14:34,958 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:14:34,958 INFO  L82        PathProgramCache]: Analyzing trace with hash 529764869, now seen corresponding path program 10 times
[2020-10-27 04:14:34,958 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:14:34,959 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109193897]
[2020-10-27 04:14:34,959 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:14:34,988 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:35,009 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:35,041 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:35,072 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:35,102 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:40,011 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:40,012 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 158
[2020-10-27 04:14:40,012 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-27 04:14:40,012 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5021
[2020-10-27 04:14:40,012 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:40,012 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 12
[2020-10-27 04:14:40,012 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:14:40,012 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 22
[2020-10-27 04:14:40,012 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:40,153 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:14:40,155 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:40,156 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:40,158 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:40,158 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:14:40,158 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:14:40,158 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-27 04:14:40,158 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:40,158 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:14:40,158 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:14:40,158 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:14:40,159 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:40,160 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27
[2020-10-27 04:14:40,166 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:40,171 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:40,179 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:40,386 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:40,386 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 40
[2020-10-27 04:14:40,387 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:14:40,387 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 220
[2020-10-27 04:14:40,387 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:40,387 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 12
[2020-10-27 04:14:40,387 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:14:40,387 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 32
[2020-10-27 04:14:40,387 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:40,597 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2020-10-27 04:14:40,605 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:40,611 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:40,622 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:40,883 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:40,883 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 40
[2020-10-27 04:14:40,883 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:14:40,883 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 276
[2020-10-27 04:14:40,883 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:40,883 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 12
[2020-10-27 04:14:40,883 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:14:40,883 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 32
[2020-10-27 04:14:40,883 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:40,894 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103
[2020-10-27 04:14:40,901 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:40,906 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:40,914 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:41,123 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:41,123 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 40
[2020-10-27 04:14:41,123 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:14:41,123 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 221
[2020-10-27 04:14:41,123 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:41,124 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 12
[2020-10-27 04:14:41,124 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:14:41,124 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 32
[2020-10-27 04:14:41,124 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:41,147 INFO  L134       CoverageAnalysis]: Checked inductivity of 1510 backedges. 435 proven. 970 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked.
[2020-10-27 04:14:41,148 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109193897]
[2020-10-27 04:14:41,148 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 04:14:41,148 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25
[2020-10-27 04:14:41,148 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610661018]
[2020-10-27 04:14:41,149 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 25 states
[2020-10-27 04:14:41,149 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:14:41,149 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2020-10-27 04:14:41,150 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600
[2020-10-27 04:14:41,150 INFO  L87              Difference]: Start difference. First operand 76 states and 90 transitions. Second operand 25 states.
[2020-10-27 04:14:41,974 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:14:41,974 INFO  L93              Difference]: Finished difference Result 133 states and 167 transitions.
[2020-10-27 04:14:41,975 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. 
[2020-10-27 04:14:41,975 INFO  L78                 Accepts]: Start accepts. Automaton has 25 states. Word has length 144
[2020-10-27 04:14:41,975 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:14:41,976 INFO  L225             Difference]: With dead ends: 133
[2020-10-27 04:14:41,976 INFO  L226             Difference]: Without dead ends: 84
[2020-10-27 04:14:41,977 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260
[2020-10-27 04:14:41,978 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 84 states.
[2020-10-27 04:14:41,985 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81.
[2020-10-27 04:14:41,985 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 81 states.
[2020-10-27 04:14:41,986 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 96 transitions.
[2020-10-27 04:14:41,986 INFO  L78                 Accepts]: Start accepts. Automaton has 81 states and 96 transitions. Word has length 144
[2020-10-27 04:14:41,986 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:14:41,986 INFO  L481      AbstractCegarLoop]: Abstraction has 81 states and 96 transitions.
[2020-10-27 04:14:41,987 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 25 states.
[2020-10-27 04:14:41,987 INFO  L276                IsEmpty]: Start isEmpty. Operand 81 states and 96 transitions.
[2020-10-27 04:14:41,988 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 156
[2020-10-27 04:14:41,988 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 04:14:41,989 INFO  L422         BasicCegarLoop]: trace histogram [33, 33, 33, 11, 11, 3, 3, 3, 3, 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 04:14:41,989 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2020-10-27 04:14:41,989 INFO  L429      AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:14:41,989 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:14:41,989 INFO  L82        PathProgramCache]: Analyzing trace with hash 1106174412, now seen corresponding path program 11 times
[2020-10-27 04:14:41,990 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:14:41,990 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410504435]
[2020-10-27 04:14:41,990 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:14:42,019 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:42,039 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:42,068 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:42,106 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:42,138 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:47,059 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:47,059 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 169
[2020-10-27 04:14:47,059 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-27 04:14:47,059 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5038
[2020-10-27 04:14:47,060 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:47,060 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 13
[2020-10-27 04:14:47,060 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:14:47,060 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 24
[2020-10-27 04:14:47,060 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:47,221 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:14:47,223 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:47,225 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:47,226 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:47,226 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:14:47,226 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:14:47,227 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-27 04:14:47,227 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:47,227 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:14:47,227 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:14:47,227 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:14:47,227 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:47,228 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29
[2020-10-27 04:14:47,234 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:47,239 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:47,247 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:47,522 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:47,522 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 43
[2020-10-27 04:14:47,523 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:14:47,523 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 287
[2020-10-27 04:14:47,523 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:47,523 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 13
[2020-10-27 04:14:47,523 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:14:47,523 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 35
[2020-10-27 04:14:47,523 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:47,778 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69
[2020-10-27 04:14:47,785 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:47,790 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:47,799 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:48,072 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:48,072 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 43
[2020-10-27 04:14:48,072 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:14:48,072 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 286
[2020-10-27 04:14:48,072 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:48,073 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 13
[2020-10-27 04:14:48,073 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:14:48,073 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 35
[2020-10-27 04:14:48,073 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:48,084 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111
[2020-10-27 04:14:48,093 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:48,100 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:48,111 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:48,362 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:48,362 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 43
[2020-10-27 04:14:48,362 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:14:48,362 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 267
[2020-10-27 04:14:48,362 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:48,362 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 13
[2020-10-27 04:14:48,363 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:14:48,363 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 35
[2020-10-27 04:14:48,363 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:48,402 INFO  L134       CoverageAnalysis]: Checked inductivity of 1819 backedges. 528 proven. 1177 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked.
[2020-10-27 04:14:48,403 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410504435]
[2020-10-27 04:14:48,403 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 04:14:48,403 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27
[2020-10-27 04:14:48,403 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590393010]
[2020-10-27 04:14:48,404 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 27 states
[2020-10-27 04:14:48,404 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:14:48,404 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants.
[2020-10-27 04:14:48,405 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702
[2020-10-27 04:14:48,405 INFO  L87              Difference]: Start difference. First operand 81 states and 96 transitions. Second operand 27 states.
[2020-10-27 04:14:49,230 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:14:49,230 INFO  L93              Difference]: Finished difference Result 141 states and 177 transitions.
[2020-10-27 04:14:49,231 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. 
[2020-10-27 04:14:49,231 INFO  L78                 Accepts]: Start accepts. Automaton has 27 states. Word has length 155
[2020-10-27 04:14:49,231 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:14:49,232 INFO  L225             Difference]: With dead ends: 141
[2020-10-27 04:14:49,232 INFO  L226             Difference]: Without dead ends: 89
[2020-10-27 04:14:49,233 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=363, Invalid=1119, Unknown=0, NotChecked=0, Total=1482
[2020-10-27 04:14:49,233 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 89 states.
[2020-10-27 04:14:49,240 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86.
[2020-10-27 04:14:49,240 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 86 states.
[2020-10-27 04:14:49,241 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 102 transitions.
[2020-10-27 04:14:49,241 INFO  L78                 Accepts]: Start accepts. Automaton has 86 states and 102 transitions. Word has length 155
[2020-10-27 04:14:49,242 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:14:49,242 INFO  L481      AbstractCegarLoop]: Abstraction has 86 states and 102 transitions.
[2020-10-27 04:14:49,242 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 27 states.
[2020-10-27 04:14:49,242 INFO  L276                IsEmpty]: Start isEmpty. Operand 86 states and 102 transitions.
[2020-10-27 04:14:49,244 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 167
[2020-10-27 04:14:49,244 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 04:14:49,244 INFO  L422         BasicCegarLoop]: trace histogram [36, 36, 36, 12, 12, 3, 3, 3, 3, 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 04:14:49,244 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2020-10-27 04:14:49,244 INFO  L429      AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:14:49,245 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:14:49,245 INFO  L82        PathProgramCache]: Analyzing trace with hash 1979391209, now seen corresponding path program 12 times
[2020-10-27 04:14:49,245 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:14:49,245 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512267392]
[2020-10-27 04:14:49,245 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:14:49,274 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:49,296 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:49,340 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:49,411 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:49,473 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:54,276 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:54,277 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 180
[2020-10-27 04:14:54,277 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-27 04:14:54,277 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5000
[2020-10-27 04:14:54,277 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:54,277 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 14
[2020-10-27 04:14:54,277 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:14:54,277 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 26
[2020-10-27 04:14:54,277 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:54,457 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:14:54,459 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:54,459 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:54,461 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:54,461 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:14:54,461 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:14:54,461 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-10-27 04:14:54,461 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:54,461 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:14:54,461 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:14:54,461 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:14:54,462 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:54,463 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31
[2020-10-27 04:14:54,468 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:54,473 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:54,481 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:54,773 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:54,773 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 46
[2020-10-27 04:14:54,773 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:14:54,774 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 304
[2020-10-27 04:14:54,774 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:54,774 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 14
[2020-10-27 04:14:54,774 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:14:54,774 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 38
[2020-10-27 04:14:54,774 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:55,061 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74
[2020-10-27 04:14:55,073 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:55,079 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:55,087 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:55,401 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:55,401 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 46
[2020-10-27 04:14:55,401 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:14:55,401 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 327
[2020-10-27 04:14:55,401 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:55,401 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 14
[2020-10-27 04:14:55,401 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:14:55,401 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 38
[2020-10-27 04:14:55,401 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:55,411 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119
[2020-10-27 04:14:55,419 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:55,424 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:55,433 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:55,768 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:14:55,768 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 46
[2020-10-27 04:14:55,768 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:14:55,768 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 348
[2020-10-27 04:14:55,768 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:14:55,768 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 14
[2020-10-27 04:14:55,768 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:14:55,768 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 38
[2020-10-27 04:14:55,768 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:14:55,799 INFO  L134       CoverageAnalysis]: Checked inductivity of 2157 backedges. 630 proven. 1404 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked.
[2020-10-27 04:14:55,799 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512267392]
[2020-10-27 04:14:55,799 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 04:14:55,799 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29
[2020-10-27 04:14:55,799 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622498708]
[2020-10-27 04:14:55,800 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 29 states
[2020-10-27 04:14:55,800 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:14:55,800 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants.
[2020-10-27 04:14:55,801 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=601, Unknown=0, NotChecked=0, Total=812
[2020-10-27 04:14:55,801 INFO  L87              Difference]: Start difference. First operand 86 states and 102 transitions. Second operand 29 states.
[2020-10-27 04:14:56,828 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:14:56,828 INFO  L93              Difference]: Finished difference Result 149 states and 187 transitions.
[2020-10-27 04:14:56,829 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. 
[2020-10-27 04:14:56,829 INFO  L78                 Accepts]: Start accepts. Automaton has 29 states. Word has length 166
[2020-10-27 04:14:56,829 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:14:56,830 INFO  L225             Difference]: With dead ends: 149
[2020-10-27 04:14:56,830 INFO  L226             Difference]: Without dead ends: 94
[2020-10-27 04:14:56,831 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=419, Invalid=1303, Unknown=0, NotChecked=0, Total=1722
[2020-10-27 04:14:56,832 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 94 states.
[2020-10-27 04:14:56,839 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 91.
[2020-10-27 04:14:56,839 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 91 states.
[2020-10-27 04:14:56,840 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 108 transitions.
[2020-10-27 04:14:56,841 INFO  L78                 Accepts]: Start accepts. Automaton has 91 states and 108 transitions. Word has length 166
[2020-10-27 04:14:56,841 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:14:56,841 INFO  L481      AbstractCegarLoop]: Abstraction has 91 states and 108 transitions.
[2020-10-27 04:14:56,841 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 29 states.
[2020-10-27 04:14:56,841 INFO  L276                IsEmpty]: Start isEmpty. Operand 91 states and 108 transitions.
[2020-10-27 04:14:56,843 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 178
[2020-10-27 04:14:56,843 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 04:14:56,843 INFO  L422         BasicCegarLoop]: trace histogram [39, 39, 39, 13, 13, 3, 3, 3, 3, 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 04:14:56,844 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2020-10-27 04:14:56,844 INFO  L429      AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:14:56,844 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:14:56,844 INFO  L82        PathProgramCache]: Analyzing trace with hash -2137860632, now seen corresponding path program 13 times
[2020-10-27 04:14:56,845 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:14:56,845 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273349993]
[2020-10-27 04:14:56,845 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:14:56,883 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:14:56,915 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:56,974 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:57,042 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:14:57,100 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:01,994 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:15:01,994 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 191
[2020-10-27 04:15:01,994 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-27 04:15:01,994 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5108
[2020-10-27 04:15:01,994 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:15:01,994 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 15
[2020-10-27 04:15:01,995 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:15:01,995 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 28
[2020-10-27 04:15:01,995 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:15:02,234 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:15:02,236 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:15:02,237 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:02,239 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:15:02,239 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:15:02,240 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:15:02,240 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-27 04:15:02,240 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:15:02,240 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:15:02,240 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:15:02,240 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:15:02,240 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:15:02,242 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33
[2020-10-27 04:15:02,255 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:15:02,262 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:02,276 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:02,782 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:15:02,782 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 49
[2020-10-27 04:15:02,782 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:15:02,782 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 526
[2020-10-27 04:15:02,782 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:15:02,782 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 15
[2020-10-27 04:15:02,782 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:15:02,783 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 41
[2020-10-27 04:15:02,783 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:15:03,114 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79
[2020-10-27 04:15:03,122 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:15:03,127 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:03,137 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:03,502 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:15:03,502 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 49
[2020-10-27 04:15:03,502 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:15:03,503 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 380
[2020-10-27 04:15:03,503 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:15:03,503 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 15
[2020-10-27 04:15:03,503 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:15:03,503 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 41
[2020-10-27 04:15:03,503 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:15:03,514 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127
[2020-10-27 04:15:03,525 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:15:03,533 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:03,548 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:03,969 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:15:03,969 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 49
[2020-10-27 04:15:03,969 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:15:03,969 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 443
[2020-10-27 04:15:03,969 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:15:03,969 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 15
[2020-10-27 04:15:03,970 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:15:03,970 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 41
[2020-10-27 04:15:03,970 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:15:04,004 INFO  L134       CoverageAnalysis]: Checked inductivity of 2524 backedges. 741 proven. 1651 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked.
[2020-10-27 04:15:04,005 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273349993]
[2020-10-27 04:15:04,005 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 04:15:04,005 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31
[2020-10-27 04:15:04,005 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226708200]
[2020-10-27 04:15:04,006 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 31 states
[2020-10-27 04:15:04,006 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:15:04,006 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants.
[2020-10-27 04:15:04,007 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=689, Unknown=0, NotChecked=0, Total=930
[2020-10-27 04:15:04,007 INFO  L87              Difference]: Start difference. First operand 91 states and 108 transitions. Second operand 31 states.
[2020-10-27 04:15:05,083 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:15:05,083 INFO  L93              Difference]: Finished difference Result 157 states and 197 transitions.
[2020-10-27 04:15:05,084 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. 
[2020-10-27 04:15:05,084 INFO  L78                 Accepts]: Start accepts. Automaton has 31 states. Word has length 177
[2020-10-27 04:15:05,084 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:15:05,085 INFO  L225             Difference]: With dead ends: 157
[2020-10-27 04:15:05,086 INFO  L226             Difference]: Without dead ends: 99
[2020-10-27 04:15:05,088 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=479, Invalid=1501, Unknown=0, NotChecked=0, Total=1980
[2020-10-27 04:15:05,088 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 99 states.
[2020-10-27 04:15:05,095 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 96.
[2020-10-27 04:15:05,095 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 96 states.
[2020-10-27 04:15:05,096 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 114 transitions.
[2020-10-27 04:15:05,096 INFO  L78                 Accepts]: Start accepts. Automaton has 96 states and 114 transitions. Word has length 177
[2020-10-27 04:15:05,097 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:15:05,097 INFO  L481      AbstractCegarLoop]: Abstraction has 96 states and 114 transitions.
[2020-10-27 04:15:05,097 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 31 states.
[2020-10-27 04:15:05,097 INFO  L276                IsEmpty]: Start isEmpty. Operand 96 states and 114 transitions.
[2020-10-27 04:15:05,099 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 189
[2020-10-27 04:15:05,099 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 04:15:05,099 INFO  L422         BasicCegarLoop]: trace histogram [42, 42, 42, 14, 14, 3, 3, 3, 3, 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 04:15:05,099 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14
[2020-10-27 04:15:05,099 INFO  L429      AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:15:05,100 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:15:05,100 INFO  L82        PathProgramCache]: Analyzing trace with hash -1504293939, now seen corresponding path program 14 times
[2020-10-27 04:15:05,100 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:15:05,100 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276203805]
[2020-10-27 04:15:05,101 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:15:05,142 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:15:05,170 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:05,215 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:05,264 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:05,323 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:10,161 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:15:10,161 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 202
[2020-10-27 04:15:10,161 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-27 04:15:10,161 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5015
[2020-10-27 04:15:10,161 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:15:10,161 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 16
[2020-10-27 04:15:10,162 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:15:10,162 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 30
[2020-10-27 04:15:10,162 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:15:10,386 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:15:10,388 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:15:10,389 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:10,391 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:15:10,391 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:15:10,391 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:15:10,391 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-27 04:15:10,391 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:15:10,391 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:15:10,391 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:15:10,391 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:15:10,391 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:15:10,392 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35
[2020-10-27 04:15:10,402 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:15:10,407 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:10,568 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:10,721 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:15:10,721 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 52
[2020-10-27 04:15:10,721 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:15:10,722 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 319
[2020-10-27 04:15:10,722 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:15:10,722 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 16
[2020-10-27 04:15:10,722 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:15:10,722 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 44
[2020-10-27 04:15:10,722 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:15:11,095 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84
[2020-10-27 04:15:11,103 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:15:11,109 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:11,118 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:11,539 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:15:11,539 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 52
[2020-10-27 04:15:11,539 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:15:11,539 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 435
[2020-10-27 04:15:11,539 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:15:11,539 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 16
[2020-10-27 04:15:11,539 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:15:11,539 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 44
[2020-10-27 04:15:11,540 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:15:11,550 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135
[2020-10-27 04:15:11,559 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:15:11,566 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:11,608 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:12,030 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:15:12,031 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 52
[2020-10-27 04:15:12,031 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:15:12,031 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 470
[2020-10-27 04:15:12,031 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:15:12,031 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 16
[2020-10-27 04:15:12,031 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:15:12,031 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 44
[2020-10-27 04:15:12,031 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:15:12,070 INFO  L134       CoverageAnalysis]: Checked inductivity of 2920 backedges. 861 proven. 1918 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked.
[2020-10-27 04:15:12,070 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276203805]
[2020-10-27 04:15:12,070 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 04:15:12,070 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33
[2020-10-27 04:15:12,071 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139271584]
[2020-10-27 04:15:12,071 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 33 states
[2020-10-27 04:15:12,071 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:15:12,072 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants.
[2020-10-27 04:15:12,072 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=783, Unknown=0, NotChecked=0, Total=1056
[2020-10-27 04:15:12,072 INFO  L87              Difference]: Start difference. First operand 96 states and 114 transitions. Second operand 33 states.
[2020-10-27 04:15:13,212 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:15:13,213 INFO  L93              Difference]: Finished difference Result 165 states and 207 transitions.
[2020-10-27 04:15:13,214 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. 
[2020-10-27 04:15:13,214 INFO  L78                 Accepts]: Start accepts. Automaton has 33 states. Word has length 188
[2020-10-27 04:15:13,215 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:15:13,215 INFO  L225             Difference]: With dead ends: 165
[2020-10-27 04:15:13,216 INFO  L226             Difference]: Without dead ends: 104
[2020-10-27 04:15:13,217 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=543, Invalid=1713, Unknown=0, NotChecked=0, Total=2256
[2020-10-27 04:15:13,218 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 104 states.
[2020-10-27 04:15:13,223 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101.
[2020-10-27 04:15:13,224 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 101 states.
[2020-10-27 04:15:13,225 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 120 transitions.
[2020-10-27 04:15:13,226 INFO  L78                 Accepts]: Start accepts. Automaton has 101 states and 120 transitions. Word has length 188
[2020-10-27 04:15:13,227 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:15:13,227 INFO  L481      AbstractCegarLoop]: Abstraction has 101 states and 120 transitions.
[2020-10-27 04:15:13,227 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 33 states.
[2020-10-27 04:15:13,227 INFO  L276                IsEmpty]: Start isEmpty. Operand 101 states and 120 transitions.
[2020-10-27 04:15:13,230 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 200
[2020-10-27 04:15:13,230 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 04:15:13,230 INFO  L422         BasicCegarLoop]: trace histogram [45, 45, 45, 15, 15, 3, 3, 3, 3, 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 04:15:13,230 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15
[2020-10-27 04:15:13,230 INFO  L429      AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:15:13,231 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:15:13,231 INFO  L82        PathProgramCache]: Analyzing trace with hash -489093628, now seen corresponding path program 15 times
[2020-10-27 04:15:13,231 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:15:13,231 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912267366]
[2020-10-27 04:15:13,231 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:15:13,275 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:15:13,310 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:13,355 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:13,408 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:13,456 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:18,286 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:15:18,286 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 213
[2020-10-27 04:15:18,286 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-27 04:15:18,286 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5008
[2020-10-27 04:15:18,286 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:15:18,286 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 17
[2020-10-27 04:15:18,287 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:15:18,287 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 32
[2020-10-27 04:15:18,287 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:15:18,559 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:15:18,562 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:15:18,563 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:18,564 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:15:18,564 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:15:18,564 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:15:18,564 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-10-27 04:15:18,565 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:15:18,565 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:15:18,565 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:15:18,565 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:15:18,565 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:15:18,566 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-10-27 04:15:18,575 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:15:18,583 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:18,593 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:19,062 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:15:19,063 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 55
[2020-10-27 04:15:19,063 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:15:19,063 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 486
[2020-10-27 04:15:19,063 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:15:19,063 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 17
[2020-10-27 04:15:19,063 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:15:19,063 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 47
[2020-10-27 04:15:19,063 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:15:19,473 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2020-10-27 04:15:19,489 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:15:19,499 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:19,519 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:20,186 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:15:20,186 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 55
[2020-10-27 04:15:20,186 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:15:20,187 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 696
[2020-10-27 04:15:20,187 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:15:20,187 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 17
[2020-10-27 04:15:20,187 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:15:20,187 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 47
[2020-10-27 04:15:20,187 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:15:20,223 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143
[2020-10-27 04:15:20,231 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:15:20,237 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:20,248 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:20,739 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:15:20,739 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 55
[2020-10-27 04:15:20,739 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:15:20,739 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 507
[2020-10-27 04:15:20,739 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:15:20,739 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 17
[2020-10-27 04:15:20,739 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:15:20,739 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 47
[2020-10-27 04:15:20,740 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:15:20,782 INFO  L134       CoverageAnalysis]: Checked inductivity of 3345 backedges. 990 proven. 2205 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked.
[2020-10-27 04:15:20,783 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912267366]
[2020-10-27 04:15:20,783 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 04:15:20,783 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35
[2020-10-27 04:15:20,783 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909954099]
[2020-10-27 04:15:20,783 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 35 states
[2020-10-27 04:15:20,784 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:15:20,784 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2020-10-27 04:15:20,785 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=883, Unknown=0, NotChecked=0, Total=1190
[2020-10-27 04:15:20,785 INFO  L87              Difference]: Start difference. First operand 101 states and 120 transitions. Second operand 35 states.
[2020-10-27 04:15:22,013 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:15:22,013 INFO  L93              Difference]: Finished difference Result 173 states and 217 transitions.
[2020-10-27 04:15:22,014 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. 
[2020-10-27 04:15:22,014 INFO  L78                 Accepts]: Start accepts. Automaton has 35 states. Word has length 199
[2020-10-27 04:15:22,014 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:15:22,015 INFO  L225             Difference]: With dead ends: 173
[2020-10-27 04:15:22,015 INFO  L226             Difference]: Without dead ends: 109
[2020-10-27 04:15:22,017 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=611, Invalid=1939, Unknown=0, NotChecked=0, Total=2550
[2020-10-27 04:15:22,018 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 109 states.
[2020-10-27 04:15:22,024 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106.
[2020-10-27 04:15:22,024 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 106 states.
[2020-10-27 04:15:22,025 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 126 transitions.
[2020-10-27 04:15:22,025 INFO  L78                 Accepts]: Start accepts. Automaton has 106 states and 126 transitions. Word has length 199
[2020-10-27 04:15:22,025 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:15:22,025 INFO  L481      AbstractCegarLoop]: Abstraction has 106 states and 126 transitions.
[2020-10-27 04:15:22,026 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 35 states.
[2020-10-27 04:15:22,026 INFO  L276                IsEmpty]: Start isEmpty. Operand 106 states and 126 transitions.
[2020-10-27 04:15:22,033 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 211
[2020-10-27 04:15:22,033 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 04:15:22,033 INFO  L422         BasicCegarLoop]: trace histogram [48, 48, 48, 16, 16, 3, 3, 3, 3, 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 04:15:22,033 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16
[2020-10-27 04:15:22,033 INFO  L429      AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:15:22,034 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:15:22,034 INFO  L82        PathProgramCache]: Analyzing trace with hash 1355701937, now seen corresponding path program 16 times
[2020-10-27 04:15:22,034 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:15:22,034 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704185882]
[2020-10-27 04:15:22,034 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:15:22,076 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:15:22,101 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:22,148 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:22,202 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:22,251 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:27,128 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:15:27,128 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 224
[2020-10-27 04:15:27,128 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-27 04:15:27,128 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5049
[2020-10-27 04:15:27,128 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:15:27,128 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-10-27 04:15:27,128 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:15:27,128 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 34
[2020-10-27 04:15:27,128 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:15:27,404 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:15:27,406 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:15:27,406 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:27,408 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:15:27,409 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:15:27,409 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:15:27,409 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-27 04:15:27,409 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:15:27,409 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:15:27,409 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:15:27,409 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:15:27,410 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:15:27,411 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39
[2020-10-27 04:15:27,426 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:15:27,437 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:27,457 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:28,157 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:15:28,158 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 58
[2020-10-27 04:15:28,158 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:15:28,158 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 730
[2020-10-27 04:15:28,158 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:15:28,158 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-10-27 04:15:28,158 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:15:28,158 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 50
[2020-10-27 04:15:28,158 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:15:28,628 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94
[2020-10-27 04:15:28,637 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:15:28,645 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:28,656 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:29,241 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:15:29,241 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 58
[2020-10-27 04:15:29,242 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:15:29,242 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 603
[2020-10-27 04:15:29,242 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:15:29,242 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-10-27 04:15:29,242 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:15:29,242 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 50
[2020-10-27 04:15:29,242 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:15:29,260 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151
[2020-10-27 04:15:29,272 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:15:29,281 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:29,297 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:29,867 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:15:29,868 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 58
[2020-10-27 04:15:29,868 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:15:29,868 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 594
[2020-10-27 04:15:29,868 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:15:29,868 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-10-27 04:15:29,868 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:15:29,868 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 50
[2020-10-27 04:15:29,868 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:15:29,916 INFO  L134       CoverageAnalysis]: Checked inductivity of 3799 backedges. 1128 proven. 2512 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked.
[2020-10-27 04:15:29,916 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704185882]
[2020-10-27 04:15:29,916 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 04:15:29,916 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37
[2020-10-27 04:15:29,917 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986993654]
[2020-10-27 04:15:29,917 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 37 states
[2020-10-27 04:15:29,917 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:15:29,918 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2020-10-27 04:15:29,919 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=343, Invalid=989, Unknown=0, NotChecked=0, Total=1332
[2020-10-27 04:15:29,919 INFO  L87              Difference]: Start difference. First operand 106 states and 126 transitions. Second operand 37 states.
[2020-10-27 04:15:31,165 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:15:31,165 INFO  L93              Difference]: Finished difference Result 181 states and 227 transitions.
[2020-10-27 04:15:31,166 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. 
[2020-10-27 04:15:31,166 INFO  L78                 Accepts]: Start accepts. Automaton has 37 states. Word has length 210
[2020-10-27 04:15:31,166 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:15:31,168 INFO  L225             Difference]: With dead ends: 181
[2020-10-27 04:15:31,168 INFO  L226             Difference]: Without dead ends: 114
[2020-10-27 04:15:31,170 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=683, Invalid=2179, Unknown=0, NotChecked=0, Total=2862
[2020-10-27 04:15:31,170 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 114 states.
[2020-10-27 04:15:31,176 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 111.
[2020-10-27 04:15:31,176 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 111 states.
[2020-10-27 04:15:31,177 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 132 transitions.
[2020-10-27 04:15:31,177 INFO  L78                 Accepts]: Start accepts. Automaton has 111 states and 132 transitions. Word has length 210
[2020-10-27 04:15:31,178 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:15:31,178 INFO  L481      AbstractCegarLoop]: Abstraction has 111 states and 132 transitions.
[2020-10-27 04:15:31,178 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 37 states.
[2020-10-27 04:15:31,178 INFO  L276                IsEmpty]: Start isEmpty. Operand 111 states and 132 transitions.
[2020-10-27 04:15:31,180 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 222
[2020-10-27 04:15:31,180 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 04:15:31,181 INFO  L422         BasicCegarLoop]: trace histogram [51, 51, 51, 17, 17, 3, 3, 3, 3, 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 04:15:31,181 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17
[2020-10-27 04:15:31,181 INFO  L429      AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:15:31,181 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:15:31,181 INFO  L82        PathProgramCache]: Analyzing trace with hash 1842885152, now seen corresponding path program 17 times
[2020-10-27 04:15:31,182 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:15:31,182 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210976699]
[2020-10-27 04:15:31,182 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:15:31,230 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:15:31,258 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:31,304 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:31,359 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:31,410 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:36,265 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:15:36,265 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 235
[2020-10-27 04:15:36,265 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-27 04:15:36,265 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5032
[2020-10-27 04:15:36,265 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:15:36,265 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 19
[2020-10-27 04:15:36,265 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:15:36,265 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 36
[2020-10-27 04:15:36,266 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:15:36,585 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:15:36,587 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:15:36,588 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:36,590 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:15:36,590 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:15:36,590 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:15:36,590 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-27 04:15:36,590 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:15:36,590 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:15:36,591 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:15:36,591 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:15:36,591 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:15:36,592 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41
[2020-10-27 04:15:36,605 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:15:36,615 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:36,655 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:37,248 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:15:37,249 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 61
[2020-10-27 04:15:37,249 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:15:37,249 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 642
[2020-10-27 04:15:37,249 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:15:37,249 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 19
[2020-10-27 04:15:37,249 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:15:37,249 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 53
[2020-10-27 04:15:37,249 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:15:37,774 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2020-10-27 04:15:37,784 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:15:37,790 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:37,815 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:38,305 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:15:38,305 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 61
[2020-10-27 04:15:38,305 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:15:38,305 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 520
[2020-10-27 04:15:38,306 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:15:38,306 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 19
[2020-10-27 04:15:38,306 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:15:38,306 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 53
[2020-10-27 04:15:38,306 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:15:38,333 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159
[2020-10-27 04:15:38,349 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:15:38,359 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:38,399 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:38,911 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:15:38,911 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 61
[2020-10-27 04:15:38,911 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:15:38,911 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 561
[2020-10-27 04:15:38,911 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:15:38,911 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 19
[2020-10-27 04:15:38,911 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:15:38,912 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 53
[2020-10-27 04:15:38,912 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:15:38,988 INFO  L134       CoverageAnalysis]: Checked inductivity of 4282 backedges. 1275 proven. 2839 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked.
[2020-10-27 04:15:38,989 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [210976699]
[2020-10-27 04:15:38,989 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 04:15:38,989 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39
[2020-10-27 04:15:38,989 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730093160]
[2020-10-27 04:15:38,990 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 39 states
[2020-10-27 04:15:38,990 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:15:38,991 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants.
[2020-10-27 04:15:38,991 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=1101, Unknown=0, NotChecked=0, Total=1482
[2020-10-27 04:15:38,991 INFO  L87              Difference]: Start difference. First operand 111 states and 132 transitions. Second operand 39 states.
[2020-10-27 04:15:40,393 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:15:40,394 INFO  L93              Difference]: Finished difference Result 189 states and 237 transitions.
[2020-10-27 04:15:40,395 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. 
[2020-10-27 04:15:40,395 INFO  L78                 Accepts]: Start accepts. Automaton has 39 states. Word has length 221
[2020-10-27 04:15:40,396 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:15:40,397 INFO  L225             Difference]: With dead ends: 189
[2020-10-27 04:15:40,397 INFO  L226             Difference]: Without dead ends: 119
[2020-10-27 04:15:40,399 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=759, Invalid=2433, Unknown=0, NotChecked=0, Total=3192
[2020-10-27 04:15:40,399 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 119 states.
[2020-10-27 04:15:40,405 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 116.
[2020-10-27 04:15:40,405 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 116 states.
[2020-10-27 04:15:40,406 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 138 transitions.
[2020-10-27 04:15:40,406 INFO  L78                 Accepts]: Start accepts. Automaton has 116 states and 138 transitions. Word has length 221
[2020-10-27 04:15:40,407 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:15:40,407 INFO  L481      AbstractCegarLoop]: Abstraction has 116 states and 138 transitions.
[2020-10-27 04:15:40,407 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 39 states.
[2020-10-27 04:15:40,407 INFO  L276                IsEmpty]: Start isEmpty. Operand 116 states and 138 transitions.
[2020-10-27 04:15:40,408 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 233
[2020-10-27 04:15:40,409 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 04:15:40,409 INFO  L422         BasicCegarLoop]: trace histogram [54, 54, 54, 18, 18, 3, 3, 3, 3, 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 04:15:40,409 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18
[2020-10-27 04:15:40,409 INFO  L429      AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:15:40,409 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:15:40,410 INFO  L82        PathProgramCache]: Analyzing trace with hash 1686934933, now seen corresponding path program 18 times
[2020-10-27 04:15:40,410 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:15:40,410 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271850866]
[2020-10-27 04:15:40,410 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:15:40,461 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:15:40,501 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:40,575 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:40,639 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:40,696 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:45,525 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:15:45,525 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 246
[2020-10-27 04:15:45,525 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-27 04:15:45,525 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5060
[2020-10-27 04:15:45,525 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:15:45,525 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-27 04:15:45,525 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:15:45,526 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 38
[2020-10-27 04:15:45,526 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:15:45,845 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:15:45,846 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:15:45,847 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:45,850 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:15:45,850 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:15:45,850 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:15:45,850 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-27 04:15:45,850 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:15:45,850 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:15:45,850 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:15:45,851 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:15:45,851 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:15:45,852 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43
[2020-10-27 04:15:45,859 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:15:45,866 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:45,892 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:46,460 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:15:46,460 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 64
[2020-10-27 04:15:46,461 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:15:46,461 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 600
[2020-10-27 04:15:46,461 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:15:46,461 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-27 04:15:46,461 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:15:46,461 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 56
[2020-10-27 04:15:46,461 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:15:47,024 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104
[2020-10-27 04:15:47,034 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:15:47,041 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:47,069 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:47,596 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:15:47,596 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 64
[2020-10-27 04:15:47,596 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:15:47,596 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 561
[2020-10-27 04:15:47,596 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:15:47,596 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-27 04:15:47,596 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:15:47,597 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 56
[2020-10-27 04:15:47,597 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:15:47,611 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167
[2020-10-27 04:15:47,624 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:15:47,632 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:47,661 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:48,256 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:15:48,256 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 64
[2020-10-27 04:15:48,256 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:15:48,257 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 631
[2020-10-27 04:15:48,257 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:15:48,257 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-27 04:15:48,257 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:15:48,257 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 56
[2020-10-27 04:15:48,257 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:15:48,312 INFO  L134       CoverageAnalysis]: Checked inductivity of 4794 backedges. 1431 proven. 3186 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked.
[2020-10-27 04:15:48,312 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271850866]
[2020-10-27 04:15:48,312 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 04:15:48,312 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41
[2020-10-27 04:15:48,312 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443651757]
[2020-10-27 04:15:48,313 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 41 states
[2020-10-27 04:15:48,313 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:15:48,313 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants.
[2020-10-27 04:15:48,314 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=1219, Unknown=0, NotChecked=0, Total=1640
[2020-10-27 04:15:48,314 INFO  L87              Difference]: Start difference. First operand 116 states and 138 transitions. Second operand 41 states.
[2020-10-27 04:15:49,946 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:15:49,947 INFO  L93              Difference]: Finished difference Result 197 states and 247 transitions.
[2020-10-27 04:15:49,947 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. 
[2020-10-27 04:15:49,947 INFO  L78                 Accepts]: Start accepts. Automaton has 41 states. Word has length 232
[2020-10-27 04:15:49,948 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:15:49,949 INFO  L225             Difference]: With dead ends: 197
[2020-10-27 04:15:49,949 INFO  L226             Difference]: Without dead ends: 124
[2020-10-27 04:15:49,951 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=839, Invalid=2701, Unknown=0, NotChecked=0, Total=3540
[2020-10-27 04:15:49,951 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 124 states.
[2020-10-27 04:15:49,957 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 121.
[2020-10-27 04:15:49,957 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 121 states.
[2020-10-27 04:15:49,958 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 144 transitions.
[2020-10-27 04:15:49,958 INFO  L78                 Accepts]: Start accepts. Automaton has 121 states and 144 transitions. Word has length 232
[2020-10-27 04:15:49,959 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:15:49,959 INFO  L481      AbstractCegarLoop]: Abstraction has 121 states and 144 transitions.
[2020-10-27 04:15:49,959 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 41 states.
[2020-10-27 04:15:49,959 INFO  L276                IsEmpty]: Start isEmpty. Operand 121 states and 144 transitions.
[2020-10-27 04:15:49,960 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 244
[2020-10-27 04:15:49,960 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 04:15:49,960 INFO  L422         BasicCegarLoop]: trace histogram [57, 57, 57, 19, 19, 3, 3, 3, 3, 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 04:15:49,960 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19
[2020-10-27 04:15:49,961 INFO  L429      AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:15:49,961 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:15:49,961 INFO  L82        PathProgramCache]: Analyzing trace with hash -710469060, now seen corresponding path program 19 times
[2020-10-27 04:15:49,961 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:15:49,962 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854795896]
[2020-10-27 04:15:49,962 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:15:50,001 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:15:50,028 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:50,078 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:50,142 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:50,198 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:55,115 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:15:55,116 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 257
[2020-10-27 04:15:55,116 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-27 04:15:55,116 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5112
[2020-10-27 04:15:55,116 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:15:55,116 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 21
[2020-10-27 04:15:55,116 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:15:55,116 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 40
[2020-10-27 04:15:55,116 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:15:55,466 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:15:55,468 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:15:55,469 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:55,471 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:15:55,472 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:15:55,472 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:15:55,472 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-27 04:15:55,472 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:15:55,472 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:15:55,472 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:15:55,472 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:15:55,472 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:15:55,474 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2020-10-27 04:15:55,482 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:15:55,490 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:55,519 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:56,128 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:15:56,128 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 67
[2020-10-27 04:15:56,128 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:15:56,128 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 645
[2020-10-27 04:15:56,128 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:15:56,128 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 21
[2020-10-27 04:15:56,129 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:15:56,129 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 59
[2020-10-27 04:15:56,129 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:15:56,778 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109
[2020-10-27 04:15:56,788 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:15:56,795 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:56,823 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:57,423 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:15:57,424 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 67
[2020-10-27 04:15:57,424 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:15:57,424 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 635
[2020-10-27 04:15:57,424 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:15:57,424 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 21
[2020-10-27 04:15:57,424 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:15:57,424 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 59
[2020-10-27 04:15:57,424 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:15:57,450 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175
[2020-10-27 04:15:57,466 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:15:57,477 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:57,524 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:15:58,498 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:15:58,499 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 67
[2020-10-27 04:15:58,499 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:15:58,499 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1032
[2020-10-27 04:15:58,499 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:15:58,499 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 21
[2020-10-27 04:15:58,499 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:15:58,499 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 59
[2020-10-27 04:15:58,499 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:15:58,615 INFO  L134       CoverageAnalysis]: Checked inductivity of 5335 backedges. 1596 proven. 3553 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked.
[2020-10-27 04:15:58,617 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854795896]
[2020-10-27 04:15:58,618 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 04:15:58,618 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43
[2020-10-27 04:15:58,618 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20677132]
[2020-10-27 04:15:58,619 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 43 states
[2020-10-27 04:15:58,619 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:15:58,620 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants.
[2020-10-27 04:15:58,621 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=1343, Unknown=0, NotChecked=0, Total=1806
[2020-10-27 04:15:58,621 INFO  L87              Difference]: Start difference. First operand 121 states and 144 transitions. Second operand 43 states.
[2020-10-27 04:16:00,214 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:16:00,214 INFO  L93              Difference]: Finished difference Result 205 states and 257 transitions.
[2020-10-27 04:16:00,215 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. 
[2020-10-27 04:16:00,215 INFO  L78                 Accepts]: Start accepts. Automaton has 43 states. Word has length 243
[2020-10-27 04:16:00,215 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:16:00,216 INFO  L225             Difference]: With dead ends: 205
[2020-10-27 04:16:00,216 INFO  L226             Difference]: Without dead ends: 129
[2020-10-27 04:16:00,219 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=923, Invalid=2983, Unknown=0, NotChecked=0, Total=3906
[2020-10-27 04:16:00,219 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 129 states.
[2020-10-27 04:16:00,225 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 126.
[2020-10-27 04:16:00,225 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 126 states.
[2020-10-27 04:16:00,226 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 150 transitions.
[2020-10-27 04:16:00,226 INFO  L78                 Accepts]: Start accepts. Automaton has 126 states and 150 transitions. Word has length 243
[2020-10-27 04:16:00,227 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:16:00,227 INFO  L481      AbstractCegarLoop]: Abstraction has 126 states and 150 transitions.
[2020-10-27 04:16:00,227 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 43 states.
[2020-10-27 04:16:00,227 INFO  L276                IsEmpty]: Start isEmpty. Operand 126 states and 150 transitions.
[2020-10-27 04:16:00,228 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 255
[2020-10-27 04:16:00,228 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 04:16:00,229 INFO  L422         BasicCegarLoop]: trace histogram [60, 60, 60, 20, 20, 3, 3, 3, 3, 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 04:16:00,229 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20
[2020-10-27 04:16:00,229 INFO  L429      AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:16:00,229 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:16:00,229 INFO  L82        PathProgramCache]: Analyzing trace with hash 1673146489, now seen corresponding path program 20 times
[2020-10-27 04:16:00,230 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:16:00,230 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115603780]
[2020-10-27 04:16:00,230 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:16:00,294 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:16:00,342 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:00,435 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:00,547 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:00,648 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:05,307 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:16:05,308 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 268
[2020-10-27 04:16:05,308 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-27 04:16:05,308 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5010
[2020-10-27 04:16:05,308 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:16:05,308 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 22
[2020-10-27 04:16:05,308 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:16:05,308 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 42
[2020-10-27 04:16:05,308 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:16:05,690 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:16:05,693 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:16:05,694 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:05,695 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:16:05,696 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:16:05,696 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:16:05,696 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-27 04:16:05,696 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:16:05,696 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:16:05,696 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:16:05,696 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:16:05,696 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:16:05,697 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47
[2020-10-27 04:16:05,740 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:16:05,747 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:05,775 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:06,460 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:16:06,460 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 70
[2020-10-27 04:16:06,460 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:16:06,460 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 719
[2020-10-27 04:16:06,460 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:16:06,460 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 22
[2020-10-27 04:16:06,460 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:16:06,461 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 62
[2020-10-27 04:16:06,461 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:16:07,145 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114
[2020-10-27 04:16:07,154 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:16:07,162 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:07,192 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:07,904 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:16:07,904 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 70
[2020-10-27 04:16:07,904 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:16:07,904 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 748
[2020-10-27 04:16:07,904 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:16:07,904 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 22
[2020-10-27 04:16:07,904 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:16:07,904 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 62
[2020-10-27 04:16:07,904 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:16:07,920 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183
[2020-10-27 04:16:07,934 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:16:07,945 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:07,977 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:08,738 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:16:08,738 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 70
[2020-10-27 04:16:08,738 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:16:08,738 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 803
[2020-10-27 04:16:08,738 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:16:08,738 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 22
[2020-10-27 04:16:08,738 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:16:08,739 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 62
[2020-10-27 04:16:08,739 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:16:08,812 INFO  L134       CoverageAnalysis]: Checked inductivity of 5905 backedges. 1770 proven. 3940 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked.
[2020-10-27 04:16:08,812 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115603780]
[2020-10-27 04:16:08,813 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 04:16:08,813 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45
[2020-10-27 04:16:08,813 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682702553]
[2020-10-27 04:16:08,813 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 45 states
[2020-10-27 04:16:08,814 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:16:08,814 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants.
[2020-10-27 04:16:08,814 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=507, Invalid=1473, Unknown=0, NotChecked=0, Total=1980
[2020-10-27 04:16:08,815 INFO  L87              Difference]: Start difference. First operand 126 states and 150 transitions. Second operand 45 states.
[2020-10-27 04:16:10,661 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:16:10,662 INFO  L93              Difference]: Finished difference Result 213 states and 267 transitions.
[2020-10-27 04:16:10,663 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. 
[2020-10-27 04:16:10,663 INFO  L78                 Accepts]: Start accepts. Automaton has 45 states. Word has length 254
[2020-10-27 04:16:10,663 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:16:10,664 INFO  L225             Difference]: With dead ends: 213
[2020-10-27 04:16:10,664 INFO  L226             Difference]: Without dead ends: 134
[2020-10-27 04:16:10,667 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1011, Invalid=3279, Unknown=0, NotChecked=0, Total=4290
[2020-10-27 04:16:10,668 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 134 states.
[2020-10-27 04:16:10,675 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 131.
[2020-10-27 04:16:10,676 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 131 states.
[2020-10-27 04:16:10,677 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 156 transitions.
[2020-10-27 04:16:10,677 INFO  L78                 Accepts]: Start accepts. Automaton has 131 states and 156 transitions. Word has length 254
[2020-10-27 04:16:10,677 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:16:10,677 INFO  L481      AbstractCegarLoop]: Abstraction has 131 states and 156 transitions.
[2020-10-27 04:16:10,677 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 45 states.
[2020-10-27 04:16:10,677 INFO  L276                IsEmpty]: Start isEmpty. Operand 131 states and 156 transitions.
[2020-10-27 04:16:10,679 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 266
[2020-10-27 04:16:10,679 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 04:16:10,679 INFO  L422         BasicCegarLoop]: trace histogram [63, 63, 63, 21, 21, 3, 3, 3, 3, 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 04:16:10,679 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21
[2020-10-27 04:16:10,680 INFO  L429      AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:16:10,680 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:16:10,680 INFO  L82        PathProgramCache]: Analyzing trace with hash 962362968, now seen corresponding path program 21 times
[2020-10-27 04:16:10,680 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:16:10,681 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842932271]
[2020-10-27 04:16:10,681 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:16:10,721 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:16:10,754 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:10,811 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:10,886 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:10,957 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:15,746 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:16:15,746 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 279
[2020-10-27 04:16:15,746 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-27 04:16:15,746 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5021
[2020-10-27 04:16:15,747 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:16:15,747 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 23
[2020-10-27 04:16:15,747 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:16:15,747 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 44
[2020-10-27 04:16:15,747 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:16:16,126 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:16:16,128 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:16:16,129 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:16,130 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:16:16,131 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:16:16,131 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:16:16,131 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-27 04:16:16,131 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:16:16,131 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:16:16,131 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:16:16,131 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:16:16,131 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:16:16,133 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49
[2020-10-27 04:16:16,143 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:16:16,152 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:16,192 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:17,093 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:16:17,093 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 73
[2020-10-27 04:16:17,093 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:16:17,093 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 949
[2020-10-27 04:16:17,093 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:16:17,093 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 23
[2020-10-27 04:16:17,093 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:16:17,094 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 65
[2020-10-27 04:16:17,094 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:16:17,839 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119
[2020-10-27 04:16:17,850 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:16:17,857 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:17,891 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:18,743 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:16:18,743 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 73
[2020-10-27 04:16:18,743 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:16:18,743 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 892
[2020-10-27 04:16:18,743 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:16:18,743 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 23
[2020-10-27 04:16:18,743 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:16:18,743 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 65
[2020-10-27 04:16:18,743 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:16:18,759 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191
[2020-10-27 04:16:18,769 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:16:18,776 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:18,810 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:19,600 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:16:19,600 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 73
[2020-10-27 04:16:19,600 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:16:19,600 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 830
[2020-10-27 04:16:19,600 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:16:19,600 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 23
[2020-10-27 04:16:19,600 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:16:19,600 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 65
[2020-10-27 04:16:19,601 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:16:19,678 INFO  L134       CoverageAnalysis]: Checked inductivity of 6504 backedges. 1953 proven. 4347 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked.
[2020-10-27 04:16:19,679 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842932271]
[2020-10-27 04:16:19,679 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 04:16:19,679 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47
[2020-10-27 04:16:19,680 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336272685]
[2020-10-27 04:16:19,680 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 47 states
[2020-10-27 04:16:19,680 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:16:19,682 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants.
[2020-10-27 04:16:19,682 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=553, Invalid=1609, Unknown=0, NotChecked=0, Total=2162
[2020-10-27 04:16:19,683 INFO  L87              Difference]: Start difference. First operand 131 states and 156 transitions. Second operand 47 states.
[2020-10-27 04:16:21,673 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:16:21,673 INFO  L93              Difference]: Finished difference Result 221 states and 277 transitions.
[2020-10-27 04:16:21,675 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. 
[2020-10-27 04:16:21,675 INFO  L78                 Accepts]: Start accepts. Automaton has 47 states. Word has length 265
[2020-10-27 04:16:21,675 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:16:21,676 INFO  L225             Difference]: With dead ends: 221
[2020-10-27 04:16:21,676 INFO  L226             Difference]: Without dead ends: 139
[2020-10-27 04:16:21,678 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1103, Invalid=3589, Unknown=0, NotChecked=0, Total=4692
[2020-10-27 04:16:21,679 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 139 states.
[2020-10-27 04:16:21,685 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 136.
[2020-10-27 04:16:21,685 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 136 states.
[2020-10-27 04:16:21,686 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 162 transitions.
[2020-10-27 04:16:21,686 INFO  L78                 Accepts]: Start accepts. Automaton has 136 states and 162 transitions. Word has length 265
[2020-10-27 04:16:21,686 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:16:21,686 INFO  L481      AbstractCegarLoop]: Abstraction has 136 states and 162 transitions.
[2020-10-27 04:16:21,686 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 47 states.
[2020-10-27 04:16:21,686 INFO  L276                IsEmpty]: Start isEmpty. Operand 136 states and 162 transitions.
[2020-10-27 04:16:21,688 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 277
[2020-10-27 04:16:21,688 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 04:16:21,688 INFO  L422         BasicCegarLoop]: trace histogram [66, 66, 66, 22, 22, 3, 3, 3, 3, 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 04:16:21,688 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22
[2020-10-27 04:16:21,688 INFO  L429      AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:16:21,689 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:16:21,689 INFO  L82        PathProgramCache]: Analyzing trace with hash -1484755107, now seen corresponding path program 22 times
[2020-10-27 04:16:21,689 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:16:21,689 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002988792]
[2020-10-27 04:16:21,689 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:16:21,735 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:16:21,767 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:21,822 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:21,895 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:21,967 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:26,868 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:16:26,868 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 290
[2020-10-27 04:16:26,868 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-27 04:16:26,868 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5128
[2020-10-27 04:16:26,869 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:16:26,869 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 24
[2020-10-27 04:16:26,869 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:16:26,869 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 46
[2020-10-27 04:16:26,869 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:16:27,307 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:16:27,308 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:16:27,309 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:27,310 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:16:27,311 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:16:27,311 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:16:27,311 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-10-27 04:16:27,311 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:16:27,311 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:16:27,311 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:16:27,311 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:16:27,311 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:16:27,312 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2020-10-27 04:16:27,321 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:16:27,329 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:27,362 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:28,212 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:16:28,212 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 76
[2020-10-27 04:16:28,212 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:16:28,212 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 890
[2020-10-27 04:16:28,212 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:16:28,212 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 24
[2020-10-27 04:16:28,213 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:16:28,213 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 68
[2020-10-27 04:16:28,213 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:16:29,011 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124
[2020-10-27 04:16:29,023 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:16:29,032 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:29,109 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:30,007 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:16:30,007 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 76
[2020-10-27 04:16:30,007 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:16:30,007 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 983
[2020-10-27 04:16:30,007 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:16:30,008 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 24
[2020-10-27 04:16:30,008 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:16:30,008 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 68
[2020-10-27 04:16:30,008 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:16:30,025 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199
[2020-10-27 04:16:30,035 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:16:30,043 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:30,076 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:31,001 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:16:31,001 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 76
[2020-10-27 04:16:31,001 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:16:31,001 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 966
[2020-10-27 04:16:31,001 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:16:31,002 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 24
[2020-10-27 04:16:31,002 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:16:31,002 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 68
[2020-10-27 04:16:31,002 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:16:31,073 INFO  L134       CoverageAnalysis]: Checked inductivity of 7132 backedges. 2145 proven. 4774 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked.
[2020-10-27 04:16:31,073 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002988792]
[2020-10-27 04:16:31,073 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 04:16:31,073 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49
[2020-10-27 04:16:31,073 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481952395]
[2020-10-27 04:16:31,074 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 49 states
[2020-10-27 04:16:31,074 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:16:31,074 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants.
[2020-10-27 04:16:31,075 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=601, Invalid=1751, Unknown=0, NotChecked=0, Total=2352
[2020-10-27 04:16:31,075 INFO  L87              Difference]: Start difference. First operand 136 states and 162 transitions. Second operand 49 states.
[2020-10-27 04:16:33,027 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:16:33,027 INFO  L93              Difference]: Finished difference Result 229 states and 287 transitions.
[2020-10-27 04:16:33,027 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. 
[2020-10-27 04:16:33,027 INFO  L78                 Accepts]: Start accepts. Automaton has 49 states. Word has length 276
[2020-10-27 04:16:33,028 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:16:33,029 INFO  L225             Difference]: With dead ends: 229
[2020-10-27 04:16:33,029 INFO  L226             Difference]: Without dead ends: 144
[2020-10-27 04:16:33,032 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 781 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1199, Invalid=3913, Unknown=0, NotChecked=0, Total=5112
[2020-10-27 04:16:33,032 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 144 states.
[2020-10-27 04:16:33,038 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 141.
[2020-10-27 04:16:33,039 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 141 states.
[2020-10-27 04:16:33,040 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 168 transitions.
[2020-10-27 04:16:33,040 INFO  L78                 Accepts]: Start accepts. Automaton has 141 states and 168 transitions. Word has length 276
[2020-10-27 04:16:33,040 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:16:33,040 INFO  L481      AbstractCegarLoop]: Abstraction has 141 states and 168 transitions.
[2020-10-27 04:16:33,040 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 49 states.
[2020-10-27 04:16:33,040 INFO  L276                IsEmpty]: Start isEmpty. Operand 141 states and 168 transitions.
[2020-10-27 04:16:33,042 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 288
[2020-10-27 04:16:33,042 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 04:16:33,042 INFO  L422         BasicCegarLoop]: trace histogram [69, 69, 69, 23, 23, 3, 3, 3, 3, 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 04:16:33,043 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23
[2020-10-27 04:16:33,043 INFO  L429      AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:16:33,043 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:16:33,043 INFO  L82        PathProgramCache]: Analyzing trace with hash -552657292, now seen corresponding path program 23 times
[2020-10-27 04:16:33,044 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:16:33,044 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67154079]
[2020-10-27 04:16:33,044 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:16:33,092 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:16:33,136 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:33,208 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:33,316 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:33,494 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:38,221 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:16:38,226 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 301
[2020-10-27 04:16:38,226 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-27 04:16:38,226 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5126
[2020-10-27 04:16:38,226 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:16:38,227 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 25
[2020-10-27 04:16:38,227 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:16:38,227 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 48
[2020-10-27 04:16:38,227 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:16:38,712 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:16:38,714 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:16:38,715 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:38,717 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:16:38,717 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:16:38,718 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:16:38,718 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-27 04:16:38,718 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:16:38,718 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:16:38,718 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:16:38,718 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:16:38,718 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:16:38,719 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53
[2020-10-27 04:16:38,729 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:16:38,737 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:38,779 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:39,780 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:16:39,780 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 79
[2020-10-27 04:16:39,780 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:16:39,780 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1050
[2020-10-27 04:16:39,780 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:16:39,781 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 25
[2020-10-27 04:16:39,781 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:16:39,781 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 71
[2020-10-27 04:16:39,781 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:16:40,670 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129
[2020-10-27 04:16:40,687 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:16:40,701 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:40,763 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:41,812 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:16:41,812 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 79
[2020-10-27 04:16:41,812 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:16:41,812 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1123
[2020-10-27 04:16:41,812 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:16:41,812 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 25
[2020-10-27 04:16:41,812 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:16:41,812 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 71
[2020-10-27 04:16:41,812 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:16:41,837 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207
[2020-10-27 04:16:41,854 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:16:41,867 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:41,915 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:42,914 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:16:42,915 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 79
[2020-10-27 04:16:42,915 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:16:42,915 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1060
[2020-10-27 04:16:42,915 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:16:42,915 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 25
[2020-10-27 04:16:42,915 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:16:42,915 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 71
[2020-10-27 04:16:42,915 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:16:43,034 INFO  L134       CoverageAnalysis]: Checked inductivity of 7789 backedges. 2346 proven. 5221 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked.
[2020-10-27 04:16:43,035 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67154079]
[2020-10-27 04:16:43,035 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 04:16:43,035 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51
[2020-10-27 04:16:43,035 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781955256]
[2020-10-27 04:16:43,036 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 51 states
[2020-10-27 04:16:43,036 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:16:43,036 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants.
[2020-10-27 04:16:43,037 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=651, Invalid=1899, Unknown=0, NotChecked=0, Total=2550
[2020-10-27 04:16:43,037 INFO  L87              Difference]: Start difference. First operand 141 states and 168 transitions. Second operand 51 states.
[2020-10-27 04:16:45,314 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:16:45,314 INFO  L93              Difference]: Finished difference Result 237 states and 297 transitions.
[2020-10-27 04:16:45,315 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. 
[2020-10-27 04:16:45,315 INFO  L78                 Accepts]: Start accepts. Automaton has 51 states. Word has length 287
[2020-10-27 04:16:45,315 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:16:45,317 INFO  L225             Difference]: With dead ends: 237
[2020-10-27 04:16:45,317 INFO  L226             Difference]: Without dead ends: 149
[2020-10-27 04:16:45,319 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 851 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1299, Invalid=4251, Unknown=0, NotChecked=0, Total=5550
[2020-10-27 04:16:45,319 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 149 states.
[2020-10-27 04:16:45,326 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 146.
[2020-10-27 04:16:45,326 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 146 states.
[2020-10-27 04:16:45,327 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 174 transitions.
[2020-10-27 04:16:45,327 INFO  L78                 Accepts]: Start accepts. Automaton has 146 states and 174 transitions. Word has length 287
[2020-10-27 04:16:45,327 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:16:45,327 INFO  L481      AbstractCegarLoop]: Abstraction has 146 states and 174 transitions.
[2020-10-27 04:16:45,327 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 51 states.
[2020-10-27 04:16:45,327 INFO  L276                IsEmpty]: Start isEmpty. Operand 146 states and 174 transitions.
[2020-10-27 04:16:45,329 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 299
[2020-10-27 04:16:45,329 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 04:16:45,329 INFO  L422         BasicCegarLoop]: trace histogram [72, 72, 72, 24, 24, 3, 3, 3, 3, 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 04:16:45,330 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24
[2020-10-27 04:16:45,330 INFO  L429      AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:16:45,330 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:16:45,330 INFO  L82        PathProgramCache]: Analyzing trace with hash -1542942143, now seen corresponding path program 24 times
[2020-10-27 04:16:45,330 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:16:45,331 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212641558]
[2020-10-27 04:16:45,331 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:16:45,374 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:16:45,404 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:45,463 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:45,560 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:45,645 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:50,424 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:16:50,424 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 312
[2020-10-27 04:16:50,424 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-27 04:16:50,424 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5046
[2020-10-27 04:16:50,424 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:16:50,424 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 26
[2020-10-27 04:16:50,424 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:16:50,424 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 50
[2020-10-27 04:16:50,424 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:16:50,949 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:16:50,951 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:16:50,951 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:50,953 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:16:50,953 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:16:50,953 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:16:50,953 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-10-27 04:16:50,953 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:16:50,953 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:16:50,953 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:16:50,954 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:16:50,954 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:16:50,955 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55
[2020-10-27 04:16:50,965 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:16:50,975 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:51,012 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:52,066 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:16:52,066 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 82
[2020-10-27 04:16:52,066 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:16:52,066 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1100
[2020-10-27 04:16:52,066 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:16:52,066 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 26
[2020-10-27 04:16:52,066 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:16:52,066 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 74
[2020-10-27 04:16:52,066 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:16:53,059 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134
[2020-10-27 04:16:53,073 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:16:53,084 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:53,124 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:54,240 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:16:54,240 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 82
[2020-10-27 04:16:54,240 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:16:54,240 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1165
[2020-10-27 04:16:54,240 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:16:54,240 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 26
[2020-10-27 04:16:54,240 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:16:54,240 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 74
[2020-10-27 04:16:54,240 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:16:54,258 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215
[2020-10-27 04:16:54,274 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:16:54,286 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:54,326 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:55,392 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:16:55,392 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 82
[2020-10-27 04:16:55,392 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:16:55,392 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1116
[2020-10-27 04:16:55,392 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:16:55,392 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 26
[2020-10-27 04:16:55,392 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:16:55,392 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 74
[2020-10-27 04:16:55,393 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:16:55,521 INFO  L134       CoverageAnalysis]: Checked inductivity of 8475 backedges. 2556 proven. 5688 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked.
[2020-10-27 04:16:55,521 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212641558]
[2020-10-27 04:16:55,521 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 04:16:55,521 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53
[2020-10-27 04:16:55,521 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268775627]
[2020-10-27 04:16:55,522 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 53 states
[2020-10-27 04:16:55,522 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:16:55,523 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants.
[2020-10-27 04:16:55,523 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=2053, Unknown=0, NotChecked=0, Total=2756
[2020-10-27 04:16:55,523 INFO  L87              Difference]: Start difference. First operand 146 states and 174 transitions. Second operand 53 states.
[2020-10-27 04:16:57,753 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:16:57,753 INFO  L93              Difference]: Finished difference Result 245 states and 307 transitions.
[2020-10-27 04:16:57,753 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. 
[2020-10-27 04:16:57,753 INFO  L78                 Accepts]: Start accepts. Automaton has 53 states. Word has length 298
[2020-10-27 04:16:57,754 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:16:57,754 INFO  L225             Difference]: With dead ends: 245
[2020-10-27 04:16:57,754 INFO  L226             Difference]: Without dead ends: 154
[2020-10-27 04:16:57,756 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 924 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1403, Invalid=4603, Unknown=0, NotChecked=0, Total=6006
[2020-10-27 04:16:57,756 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 154 states.
[2020-10-27 04:16:57,763 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 151.
[2020-10-27 04:16:57,763 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 151 states.
[2020-10-27 04:16:57,764 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 180 transitions.
[2020-10-27 04:16:57,765 INFO  L78                 Accepts]: Start accepts. Automaton has 151 states and 180 transitions. Word has length 298
[2020-10-27 04:16:57,765 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:16:57,765 INFO  L481      AbstractCegarLoop]: Abstraction has 151 states and 180 transitions.
[2020-10-27 04:16:57,765 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 53 states.
[2020-10-27 04:16:57,765 INFO  L276                IsEmpty]: Start isEmpty. Operand 151 states and 180 transitions.
[2020-10-27 04:16:57,767 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 310
[2020-10-27 04:16:57,767 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 04:16:57,767 INFO  L422         BasicCegarLoop]: trace histogram [75, 75, 75, 25, 25, 3, 3, 3, 3, 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 04:16:57,768 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25
[2020-10-27 04:16:57,768 INFO  L429      AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:16:57,768 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:16:57,768 INFO  L82        PathProgramCache]: Analyzing trace with hash -271205744, now seen corresponding path program 25 times
[2020-10-27 04:16:57,768 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:16:57,769 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643578959]
[2020-10-27 04:16:57,769 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:16:57,821 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:16:57,850 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:57,912 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:58,002 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:16:58,084 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:17:03,019 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:17:03,020 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 323
[2020-10-27 04:17:03,020 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-27 04:17:03,020 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5195
[2020-10-27 04:17:03,020 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:17:03,020 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 27
[2020-10-27 04:17:03,020 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:17:03,020 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 52
[2020-10-27 04:17:03,020 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:17:03,580 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:17:03,582 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:17:03,583 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:17:03,584 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:17:03,584 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:17:03,584 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:17:03,585 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-27 04:17:03,585 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:17:03,585 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:17:03,585 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:17:03,585 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:17:03,585 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:17:03,586 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57
[2020-10-27 04:17:03,599 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:17:03,608 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:17:03,649 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:17:04,867 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:17:04,867 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 85
[2020-10-27 04:17:04,867 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:17:04,867 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1267
[2020-10-27 04:17:04,868 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:17:04,868 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 27
[2020-10-27 04:17:04,868 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:17:04,868 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 77
[2020-10-27 04:17:04,868 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:17:05,902 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139
[2020-10-27 04:17:05,914 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:17:05,923 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:17:05,965 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:17:07,186 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:17:07,187 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 85
[2020-10-27 04:17:07,187 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:17:07,187 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1272
[2020-10-27 04:17:07,187 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:17:07,187 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 27
[2020-10-27 04:17:07,187 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:17:07,187 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 77
[2020-10-27 04:17:07,187 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:17:07,206 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223
[2020-10-27 04:17:07,218 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:17:07,227 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:17:07,269 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:17:08,539 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:17:08,539 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 85
[2020-10-27 04:17:08,539 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:17:08,539 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1321
[2020-10-27 04:17:08,539 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:17:08,539 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 27
[2020-10-27 04:17:08,540 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:17:08,540 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 77
[2020-10-27 04:17:08,540 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:17:08,625 INFO  L134       CoverageAnalysis]: Checked inductivity of 9190 backedges. 2775 proven. 6175 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked.
[2020-10-27 04:17:08,625 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643578959]
[2020-10-27 04:17:08,625 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 04:17:08,626 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55
[2020-10-27 04:17:08,626 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992538516]
[2020-10-27 04:17:08,626 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 55 states
[2020-10-27 04:17:08,626 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:17:08,627 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants.
[2020-10-27 04:17:08,627 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=757, Invalid=2213, Unknown=0, NotChecked=0, Total=2970
[2020-10-27 04:17:08,627 INFO  L87              Difference]: Start difference. First operand 151 states and 180 transitions. Second operand 55 states.
[2020-10-27 04:17:11,000 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:17:11,000 INFO  L93              Difference]: Finished difference Result 253 states and 317 transitions.
[2020-10-27 04:17:11,001 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. 
[2020-10-27 04:17:11,001 INFO  L78                 Accepts]: Start accepts. Automaton has 55 states. Word has length 309
[2020-10-27 04:17:11,001 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:17:11,003 INFO  L225             Difference]: With dead ends: 253
[2020-10-27 04:17:11,003 INFO  L226             Difference]: Without dead ends: 159
[2020-10-27 04:17:11,005 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1000 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1511, Invalid=4969, Unknown=0, NotChecked=0, Total=6480
[2020-10-27 04:17:11,005 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 159 states.
[2020-10-27 04:17:11,011 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 156.
[2020-10-27 04:17:11,011 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 156 states.
[2020-10-27 04:17:11,013 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 186 transitions.
[2020-10-27 04:17:11,013 INFO  L78                 Accepts]: Start accepts. Automaton has 156 states and 186 transitions. Word has length 309
[2020-10-27 04:17:11,013 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:17:11,013 INFO  L481      AbstractCegarLoop]: Abstraction has 156 states and 186 transitions.
[2020-10-27 04:17:11,013 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 55 states.
[2020-10-27 04:17:11,013 INFO  L276                IsEmpty]: Start isEmpty. Operand 156 states and 186 transitions.
[2020-10-27 04:17:11,015 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 321
[2020-10-27 04:17:11,015 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 04:17:11,016 INFO  L422         BasicCegarLoop]: trace histogram [78, 78, 78, 26, 26, 3, 3, 3, 3, 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 04:17:11,016 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26
[2020-10-27 04:17:11,016 INFO  L429      AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:17:11,016 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:17:11,016 INFO  L82        PathProgramCache]: Analyzing trace with hash 746314021, now seen corresponding path program 26 times
[2020-10-27 04:17:11,017 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:17:11,017 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124433799]
[2020-10-27 04:17:11,017 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:17:11,084 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:17:11,114 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:17:11,177 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:17:11,282 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:17:11,380 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:17:16,211 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:17:16,211 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 334
[2020-10-27 04:17:16,211 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-27 04:17:16,211 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5123
[2020-10-27 04:17:16,211 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:17:16,211 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 28
[2020-10-27 04:17:16,211 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:17:16,212 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 54
[2020-10-27 04:17:16,212 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:17:16,810 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:17:16,812 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:17:16,813 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:17:16,815 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:17:16,815 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:17:16,815 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:17:16,815 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-27 04:17:16,815 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:17:16,815 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:17:16,815 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:17:16,816 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:17:16,816 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:17:16,817 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59
[2020-10-27 04:17:16,829 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:17:16,840 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:17:16,884 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:17:18,225 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:17:18,225 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 88
[2020-10-27 04:17:18,225 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:17:18,226 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1395
[2020-10-27 04:17:18,226 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:17:18,226 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 28
[2020-10-27 04:17:18,226 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:17:18,226 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 80
[2020-10-27 04:17:18,226 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0