/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label13.c


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


This is Ultimate 0.2.0-0f64333
[2020-10-28 10:41:45,377 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-28 10:41:45,382 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-28 10:41:45,432 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-28 10:41:45,433 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-28 10:41:45,439 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-28 10:41:45,442 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-28 10:41:45,447 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-28 10:41:45,450 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-28 10:41:45,456 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2020-10-28 10:41:45,460 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-28 10:41:45,463 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-28 10:41:45,465 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-28 10:41:45,467 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-28 10:41:45,468 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-28 10:41:45,471 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-28 10:41:45,478 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-28 10:41:45,486 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-28 10:41:45,488 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-28 10:41:45,490 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-28 10:41:45,492 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-28 10:41:45,494 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-28 10:41:45,502 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-28 10:41:45,503 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-28 10:41:45,503 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-28 10:41:45,506 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-28 10:41:45,507 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-28 10:41:45,509 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-28 10:41:45,510 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-28 10:41:45,510 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-28 10:41:45,511 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-28 10:41:45,512 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-28 10:41:45,513 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-28 10:41:45,514 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-28 10:41:45,515 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-28 10:41:45,515 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-28 10:41:45,515 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-28 10:41:45,525 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-28 10:41:45,526 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-28 10:41:45,533 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-10-28 10:41:45,585 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-28 10:41:45,585 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-28 10:41:45,589 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-28 10:41:45,589 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-28 10:41:45,589 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-28 10:41:45,590 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-28 10:41:45,590 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-28 10:41:45,593 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-28 10:41:45,593 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-28 10:41:45,594 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-28 10:41:45,595 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-28 10:41:45,595 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-28 10:41:45,595 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-28 10:41:45,595 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-28 10:41:45,596 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-28 10:41:45,596 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-28 10:41:45,596 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-28 10:41:45,596 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-28 10:41:45,596 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-28 10:41:45,597 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-28 10:41:45,597 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-28 10:41:45,597 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-28 10:41:45,597 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-28 10:41:45,597 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-28 10:41:45,597 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-28 10:41:45,598 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-28 10:41:45,598 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-28 10:41:45,598 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-28 10:41:45,598 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-28 10:41:45,598 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true;
[2020-10-28 10:41:45,976 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-28 10:41:46,008 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-28 10:41:46,013 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-28 10:41:46,014 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-28 10:41:46,015 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-28 10:41:46,016 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label13.c
[2020-10-28 10:41:46,097 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67ca71244/c1a9e74ada1f4c6398cb33f9c9e28a59/FLAG21d5071d8
[2020-10-28 10:41:47,304 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-28 10:41:47,305 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label13.c
[2020-10-28 10:41:47,346 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67ca71244/c1a9e74ada1f4c6398cb33f9c9e28a59/FLAG21d5071d8
[2020-10-28 10:41:47,574 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67ca71244/c1a9e74ada1f4c6398cb33f9c9e28a59
[2020-10-28 10:41:47,577 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-28 10:41:47,583 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-28 10:41:47,585 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-28 10:41:47,585 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-28 10:41:47,589 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-28 10:41:47,590 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:41:47" (1/1) ...
[2020-10-28 10:41:47,594 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c0f29c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:41:47, skipping insertion in model container
[2020-10-28 10:41:47,594 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:41:47" (1/1) ...
[2020-10-28 10:41:47,604 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-28 10:41:47,853 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-28 10:41:50,192 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-28 10:41:50,210 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-28 10:41:51,380 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-28 10:41:51,448 INFO  L208         MainTranslator]: Completed translation
[2020-10-28 10:41:51,448 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:41:51 WrapperNode
[2020-10-28 10:41:51,449 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-28 10:41:51,450 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-28 10:41:51,450 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-28 10:41:51,450 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-28 10:41:51,465 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:41:51" (1/1) ...
[2020-10-28 10:41:51,465 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:41:51" (1/1) ...
[2020-10-28 10:41:51,588 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:41:51" (1/1) ...
[2020-10-28 10:41:51,590 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:41:51" (1/1) ...
[2020-10-28 10:41:51,909 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:41:51" (1/1) ...
[2020-10-28 10:41:52,032 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:41:51" (1/1) ...
[2020-10-28 10:41:52,090 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:41:51" (1/1) ...
[2020-10-28 10:41:52,174 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-28 10:41:52,175 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-28 10:41:52,176 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-28 10:41:52,176 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-28 10:41:52,177 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:41:51" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-28 10:41:52,255 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-28 10:41:52,255 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-28 10:41:52,255 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2020-10-28 10:41:52,255 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-28 10:41:52,256 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-28 10:41:52,256 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-28 10:41:52,256 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-28 10:41:52,256 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-28 10:41:52,256 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-28 10:41:52,256 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-28 10:41:52,256 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-28 10:41:52,257 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-28 10:41:52,257 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-28 10:41:52,257 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-28 10:41:52,257 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-28 10:41:52,257 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-28 10:41:52,257 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-28 10:41:52,258 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-28 10:41:52,258 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-28 10:41:52,258 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-28 10:41:52,258 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-10-28 10:41:52,258 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-28 10:41:52,258 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2020-10-28 10:41:52,258 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-28 10:41:52,259 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-28 10:41:52,259 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-28 10:41:52,259 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-28 10:41:52,259 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-28 10:41:52,259 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-28 10:41:52,259 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-28 10:41:52,259 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-10-28 10:41:52,260 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-10-28 10:41:52,260 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-28 10:42:02,156 INFO  L293             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-28 10:42:02,157 INFO  L298             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-28 10:42:02,162 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:42:02 BoogieIcfgContainer
[2020-10-28 10:42:02,163 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-28 10:42:02,165 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-28 10:42:02,165 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-28 10:42:02,169 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-28 10:42:02,169 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:41:47" (1/3) ...
[2020-10-28 10:42:02,170 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75043e58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:42:02, skipping insertion in model container
[2020-10-28 10:42:02,171 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:41:51" (2/3) ...
[2020-10-28 10:42:02,171 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75043e58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:42:02, skipping insertion in model container
[2020-10-28 10:42:02,171 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:42:02" (3/3) ...
[2020-10-28 10:42:02,173 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem05_label13.c
[2020-10-28 10:42:02,186 INFO  L164   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-28 10:42:02,193 INFO  L176   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-28 10:42:02,208 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-28 10:42:02,258 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2020-10-28 10:42:02,259 INFO  L378      AbstractCegarLoop]: Hoare is true
[2020-10-28 10:42:02,259 INFO  L379      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-28 10:42:02,259 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-28 10:42:02,259 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-28 10:42:02,259 INFO  L382      AbstractCegarLoop]: Difference is false
[2020-10-28 10:42:02,259 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-28 10:42:02,259 INFO  L387      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-28 10:42:02,324 INFO  L276                IsEmpty]: Start isEmpty. Operand 2226 states.
[2020-10-28 10:42:02,469 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1660
[2020-10-28 10:42:02,469 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:42:02,472 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-28 10:42:02,473 INFO  L429      AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:42:02,480 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:42:02,481 INFO  L82        PathProgramCache]: Analyzing trace with hash 1910579681, now seen corresponding path program 1 times
[2020-10-28 10:42:02,493 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:42:02,494 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403746055]
[2020-10-28 10:42:02,495 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:42:03,485 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:42:03,973 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:42:08,717 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:42:08,718 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1683
[2020-10-28 10:42:08,718 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:42:08,719 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5222
[2020-10-28 10:42:08,726 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:42:08,727 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:42:08,727 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-28 10:42:08,727 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-28 10:42:08,727 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1674
[2020-10-28 10:42:08,728 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 8
[2020-10-28 10:42:10,655 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:42:10,673 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:42:10,678 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:42:10,700 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:42:10,700 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:42:10,700 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:42:10,701 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 26
[2020-10-28 10:42:10,701 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:42:10,701 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:42:10,701 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:42:10,701 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:42:10,702 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-28 10:42:10,702 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:42:13,571 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-28 10:42:13,572 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403746055]
[2020-10-28 10:42:13,574 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-28 10:42:13,574 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-10-28 10:42:13,575 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238465027]
[2020-10-28 10:42:13,583 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-28 10:42:13,584 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:42:13,597 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-28 10:42:13,598 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-28 10:42:13,600 INFO  L87              Difference]: Start difference. First operand 2226 states. Second operand 4 states.
[2020-10-28 10:42:36,462 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-28 10:42:36,463 INFO  L93              Difference]: Finished difference Result 6316 states and 11857 transitions.
[2020-10-28 10:42:36,464 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-28 10:42:36,466 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1659
[2020-10-28 10:42:36,476 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-28 10:42:36,530 INFO  L225             Difference]: With dead ends: 6316
[2020-10-28 10:42:36,531 INFO  L226             Difference]: Without dead ends: 4026
[2020-10-28 10:42:36,543 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-10-28 10:42:36,571 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4026 states.
[2020-10-28 10:42:36,786 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 3997.
[2020-10-28 10:42:36,787 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3997 states.
[2020-10-28 10:42:36,812 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3997 states to 3997 states and 6428 transitions.
[2020-10-28 10:42:36,814 INFO  L78                 Accepts]: Start accepts. Automaton has 3997 states and 6428 transitions. Word has length 1659
[2020-10-28 10:42:36,819 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-28 10:42:36,819 INFO  L481      AbstractCegarLoop]: Abstraction has 3997 states and 6428 transitions.
[2020-10-28 10:42:36,819 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-28 10:42:36,819 INFO  L276                IsEmpty]: Start isEmpty. Operand 3997 states and 6428 transitions.
[2020-10-28 10:42:36,952 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1669
[2020-10-28 10:42:36,953 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:42:36,954 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-28 10:42:36,955 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-28 10:42:36,956 INFO  L429      AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:42:36,957 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:42:36,957 INFO  L82        PathProgramCache]: Analyzing trace with hash 953654885, now seen corresponding path program 1 times
[2020-10-28 10:42:36,958 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:42:36,959 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829699010]
[2020-10-28 10:42:36,960 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:42:37,147 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:42:37,177 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:42:39,563 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:42:42,189 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:42:42,189 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1694
[2020-10-28 10:42:42,190 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-28 10:42:42,190 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5037
[2020-10-28 10:42:42,191 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:42:42,191 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:42:42,191 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-28 10:42:42,191 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-28 10:42:42,192 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 15
[2020-10-28 10:42:42,192 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:42:43,309 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:42:43,320 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:42:43,323 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:42:43,335 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:42:43,336 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:42:43,336 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:42:43,336 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 15
[2020-10-28 10:42:43,336 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:42:43,337 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:42:43,337 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:42:43,337 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:42:43,337 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-28 10:42:43,337 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:42:43,366 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-28 10:42:43,376 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:42:43,378 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:42:43,396 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:42:43,397 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-28 10:42:43,397 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:42:43,397 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 20
[2020-10-28 10:42:43,398 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:42:43,398 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:42:43,398 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:42:43,398 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-28 10:42:43,398 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-10-28 10:42:43,399 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:42:44,697 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-28 10:42:44,697 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829699010]
[2020-10-28 10:42:44,697 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-28 10:42:44,698 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-10-28 10:42:44,698 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915644685]
[2020-10-28 10:42:44,702 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-28 10:42:44,702 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:42:44,703 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-28 10:42:44,703 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-10-28 10:42:44,703 INFO  L87              Difference]: Start difference. First operand 3997 states and 6428 transitions. Second operand 8 states.
[2020-10-28 10:42:46,960 WARN  L193               SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 75
[2020-10-28 10:43:27,105 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-28 10:43:27,105 INFO  L93              Difference]: Finished difference Result 15471 states and 25396 transitions.
[2020-10-28 10:43:27,107 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-10-28 10:43:27,108 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 1668
[2020-10-28 10:43:27,108 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-28 10:43:27,177 INFO  L225             Difference]: With dead ends: 15471
[2020-10-28 10:43:27,177 INFO  L226             Difference]: Without dead ends: 11480
[2020-10-28 10:43:27,190 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240
[2020-10-28 10:43:27,207 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11480 states.
[2020-10-28 10:43:27,513 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11480 to 11283.
[2020-10-28 10:43:27,513 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 11283 states.
[2020-10-28 10:43:27,548 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11283 states to 11283 states and 17402 transitions.
[2020-10-28 10:43:27,549 INFO  L78                 Accepts]: Start accepts. Automaton has 11283 states and 17402 transitions. Word has length 1668
[2020-10-28 10:43:27,549 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-28 10:43:27,550 INFO  L481      AbstractCegarLoop]: Abstraction has 11283 states and 17402 transitions.
[2020-10-28 10:43:27,550 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-28 10:43:27,550 INFO  L276                IsEmpty]: Start isEmpty. Operand 11283 states and 17402 transitions.
[2020-10-28 10:43:27,623 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1697
[2020-10-28 10:43:27,623 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:43:27,625 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-28 10:43:27,625 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-28 10:43:27,626 INFO  L429      AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:43:27,627 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:43:27,628 INFO  L82        PathProgramCache]: Analyzing trace with hash -864217842, now seen corresponding path program 1 times
[2020-10-28 10:43:27,629 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:43:27,629 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766471798]
[2020-10-28 10:43:27,630 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:43:27,812 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:43:27,850 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:43:28,127 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:43:32,962 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:43:32,962 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1724
[2020-10-28 10:43:32,962 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-28 10:43:32,962 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5144
[2020-10-28 10:43:32,963 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:43:32,963 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:43:32,963 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:43:32,963 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 21
[2020-10-28 10:43:32,963 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 27
[2020-10-28 10:43:32,964 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:43:33,498 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:43:33,501 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:43:33,503 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:43:33,510 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:43:33,511 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:43:33,511 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:43:33,511 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-10-28 10:43:33,511 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:43:33,512 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:43:33,512 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-28 10:43:33,512 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:43:33,512 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-28 10:43:33,512 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:43:33,537 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-28 10:43:33,541 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:43:33,543 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:43:33,555 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:43:33,555 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-10-28 10:43:33,555 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:43:33,556 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 13
[2020-10-28 10:43:33,556 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:43:33,556 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:43:33,556 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:43:33,556 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:43:33,557 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-10-28 10:43:33,557 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:43:33,565 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2020-10-28 10:43:33,572 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:43:33,577 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:43:33,619 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:43:33,619 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 27
[2020-10-28 10:43:33,619 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:43:33,620 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 46
[2020-10-28 10:43:33,620 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:43:33,620 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:43:33,620 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:43:33,620 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-28 10:43:33,621 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 27
[2020-10-28 10:43:33,621 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:43:34,990 INFO  L134       CoverageAnalysis]: Checked inductivity of 40 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-28 10:43:34,990 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766471798]
[2020-10-28 10:43:34,991 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-28 10:43:34,991 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-28 10:43:34,991 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133356313]
[2020-10-28 10:43:34,994 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-28 10:43:34,994 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:43:34,995 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-28 10:43:34,995 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-28 10:43:34,995 INFO  L87              Difference]: Start difference. First operand 11283 states and 17402 transitions. Second operand 7 states.
[2020-10-28 10:44:06,273 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-28 10:44:06,273 INFO  L93              Difference]: Finished difference Result 34297 states and 54980 transitions.
[2020-10-28 10:44:06,274 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-28 10:44:06,275 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1696
[2020-10-28 10:44:06,278 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-28 10:44:06,395 INFO  L225             Difference]: With dead ends: 34297
[2020-10-28 10:44:06,395 INFO  L226             Difference]: Without dead ends: 23020
[2020-10-28 10:44:06,433 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-28 10:44:06,460 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 23020 states.
[2020-10-28 10:44:07,117 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 23020 to 22682.
[2020-10-28 10:44:07,118 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22682 states.
[2020-10-28 10:44:07,174 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22682 states to 22682 states and 32929 transitions.
[2020-10-28 10:44:07,175 INFO  L78                 Accepts]: Start accepts. Automaton has 22682 states and 32929 transitions. Word has length 1696
[2020-10-28 10:44:07,175 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-28 10:44:07,175 INFO  L481      AbstractCegarLoop]: Abstraction has 22682 states and 32929 transitions.
[2020-10-28 10:44:07,175 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-28 10:44:07,176 INFO  L276                IsEmpty]: Start isEmpty. Operand 22682 states and 32929 transitions.
[2020-10-28 10:44:07,376 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1731
[2020-10-28 10:44:07,376 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:44:07,378 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-28 10:44:07,378 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-28 10:44:07,379 INFO  L429      AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:44:07,379 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:44:07,380 INFO  L82        PathProgramCache]: Analyzing trace with hash 2091436039, now seen corresponding path program 1 times
[2020-10-28 10:44:07,381 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:44:07,381 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076574116]
[2020-10-28 10:44:07,382 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:44:07,539 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:44:07,579 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:44:07,922 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:44:08,854 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:44:12,742 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:44:12,742 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1758
[2020-10-28 10:44:12,743 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-28 10:44:12,743 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5199
[2020-10-28 10:44:12,743 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:44:12,743 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:44:12,744 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-10-28 10:44:12,744 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-28 10:44:12,744 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 77
[2020-10-28 10:44:12,744 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:44:13,211 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:44:13,219 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:44:13,223 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:44:13,235 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:44:13,235 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:44:13,235 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:44:13,236 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 14
[2020-10-28 10:44:13,236 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:44:13,236 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:44:13,236 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:44:13,236 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:44:13,237 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-28 10:44:13,237 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:44:13,268 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-28 10:44:13,292 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:44:13,300 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:44:13,343 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:44:13,400 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:44:13,400 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 41
[2020-10-28 10:44:13,400 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-28 10:44:13,401 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 107
[2020-10-28 10:44:13,401 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:44:13,401 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:44:13,401 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:44:13,402 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:44:13,402 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 35
[2020-10-28 10:44:13,402 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:44:13,417 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48
[2020-10-28 10:44:13,426 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:44:13,433 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:44:13,487 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:44:13,488 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 32
[2020-10-28 10:44:13,488 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:44:13,488 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 60
[2020-10-28 10:44:13,488 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:44:13,489 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:44:13,489 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:44:13,489 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-28 10:44:13,489 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 32
[2020-10-28 10:44:13,489 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:44:15,147 INFO  L134       CoverageAnalysis]: Checked inductivity of 92 backedges. 86 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2020-10-28 10:44:15,148 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076574116]
[2020-10-28 10:44:15,148 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-28 10:44:15,148 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-28 10:44:15,148 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121451115]
[2020-10-28 10:44:15,155 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-28 10:44:15,156 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:44:15,156 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-28 10:44:15,157 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2020-10-28 10:44:15,157 INFO  L87              Difference]: Start difference. First operand 22682 states and 32929 transitions. Second operand 7 states.
[2020-10-28 10:44:46,979 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-28 10:44:46,979 INFO  L93              Difference]: Finished difference Result 56405 states and 82228 transitions.
[2020-10-28 10:44:46,980 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-10-28 10:44:46,980 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1730
[2020-10-28 10:44:46,980 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-28 10:44:47,103 INFO  L225             Difference]: With dead ends: 56405
[2020-10-28 10:44:47,103 INFO  L226             Difference]: Without dead ends: 33729
[2020-10-28 10:44:47,177 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110
[2020-10-28 10:44:47,217 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 33729 states.
[2020-10-28 10:44:47,880 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 33729 to 33660.
[2020-10-28 10:44:47,881 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 33660 states.
[2020-10-28 10:44:47,956 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 33660 states to 33660 states and 44397 transitions.
[2020-10-28 10:44:47,957 INFO  L78                 Accepts]: Start accepts. Automaton has 33660 states and 44397 transitions. Word has length 1730
[2020-10-28 10:44:47,957 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-28 10:44:47,957 INFO  L481      AbstractCegarLoop]: Abstraction has 33660 states and 44397 transitions.
[2020-10-28 10:44:47,957 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-28 10:44:47,958 INFO  L276                IsEmpty]: Start isEmpty. Operand 33660 states and 44397 transitions.
[2020-10-28 10:44:48,084 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1774
[2020-10-28 10:44:48,085 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:44:48,086 INFO  L422         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-28 10:44:48,086 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-28 10:44:48,087 INFO  L429      AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:44:48,087 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:44:48,088 INFO  L82        PathProgramCache]: Analyzing trace with hash -1608598824, now seen corresponding path program 1 times
[2020-10-28 10:44:48,088 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:44:48,088 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548409651]
[2020-10-28 10:44:48,089 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:44:48,222 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:44:48,256 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:44:48,586 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:44:48,882 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:44:53,424 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:44:53,426 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1803
[2020-10-28 10:44:53,426 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-28 10:44:53,429 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5196
[2020-10-28 10:44:53,429 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:44:53,430 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:44:53,430 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-28 10:44:53,430 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-28 10:44:53,431 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 46
[2020-10-28 10:44:53,433 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-28 10:44:53,836 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:44:53,840 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:44:53,843 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:44:53,852 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:44:53,852 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:44:53,852 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:44:53,852 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-10-28 10:44:53,852 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:44:53,853 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:44:53,853 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:44:53,853 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:44:53,853 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-28 10:44:53,853 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:44:53,882 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-28 10:44:53,892 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:44:53,899 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:44:53,948 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:44:53,948 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 41
[2020-10-28 10:44:53,948 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:44:53,948 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 55
[2020-10-28 10:44:53,949 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:44:53,949 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:44:53,949 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:44:53,949 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-28 10:44:53,949 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 41
[2020-10-28 10:44:53,949 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:44:53,983 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48
[2020-10-28 10:44:53,994 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:44:54,002 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:44:54,025 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:44:54,025 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 49
[2020-10-28 10:44:54,025 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:44:54,025 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 29
[2020-10-28 10:44:54,026 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:44:54,026 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:44:54,026 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-28 10:44:54,026 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 46
[2020-10-28 10:44:54,026 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-28 10:44:54,026 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:44:54,042 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96
[2020-10-28 10:44:54,048 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:44:54,053 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:44:54,065 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:44:54,065 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 27
[2020-10-28 10:44:54,065 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:44:54,065 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 15
[2020-10-28 10:44:54,066 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:44:54,066 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:44:54,066 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-28 10:44:54,066 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 24
[2020-10-28 10:44:54,066 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-28 10:44:54,067 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:44:55,525 INFO  L134       CoverageAnalysis]: Checked inductivity of 191 backedges. 103 proven. 54 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked.
[2020-10-28 10:44:55,525 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548409651]
[2020-10-28 10:44:55,525 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-28 10:44:55,526 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-28 10:44:55,526 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429750799]
[2020-10-28 10:44:55,527 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-28 10:44:55,528 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:44:55,528 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-28 10:44:55,528 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-28 10:44:55,528 INFO  L87              Difference]: Start difference. First operand 33660 states and 44397 transitions. Second operand 7 states.