/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label00.c


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


This is Ultimate 0.2.0-0f64333
[2020-10-27 16:06:26,174 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-27 16:06:26,178 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-27 16:06:26,237 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-27 16:06:26,238 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-27 16:06:26,246 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-27 16:06:26,248 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-27 16:06:26,253 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-27 16:06:26,256 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-27 16:06:26,262 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-27 16:06:26,263 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-27 16:06:26,265 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-27 16:06:26,265 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-27 16:06:26,268 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-27 16:06:26,270 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-27 16:06:26,272 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-27 16:06:26,273 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-27 16:06:26,286 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-27 16:06:26,293 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-27 16:06:26,301 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-27 16:06:26,302 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-27 16:06:26,304 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-27 16:06:26,305 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-27 16:06:26,308 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-27 16:06:26,316 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-27 16:06:26,316 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-27 16:06:26,317 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-27 16:06:26,319 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-27 16:06:26,319 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-27 16:06:26,320 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-27 16:06:26,321 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-27 16:06:26,322 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-27 16:06:26,324 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-27 16:06:26,324 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-27 16:06:26,325 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-27 16:06:26,326 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-27 16:06:26,326 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-27 16:06:26,327 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-27 16:06:26,327 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-27 16:06:26,328 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-27 16:06:26,328 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-27 16:06:26,336 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-10-27 16:06:26,384 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-27 16:06:26,384 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-27 16:06:26,388 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-27 16:06:26,389 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-27 16:06:26,389 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-27 16:06:26,389 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-27 16:06:26,389 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-27 16:06:26,389 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-27 16:06:26,390 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-27 16:06:26,390 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-27 16:06:26,391 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-27 16:06:26,391 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-27 16:06:26,391 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-27 16:06:26,392 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-27 16:06:26,392 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-27 16:06:26,392 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-27 16:06:26,392 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-27 16:06:26,392 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-27 16:06:26,393 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-27 16:06:26,393 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-27 16:06:26,393 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-27 16:06:26,393 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-27 16:06:26,393 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-27 16:06:26,394 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-27 16:06:26,394 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-27 16:06:26,394 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-27 16:06:26,394 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-27 16:06:26,394 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-27 16:06:26,394 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-27 16:06:26,395 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true;
[2020-10-27 16:06:26,796 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-27 16:06:26,840 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-27 16:06:26,843 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-27 16:06:26,845 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-27 16:06:26,846 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-27 16:06:26,848 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label00.c
[2020-10-27 16:06:26,924 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/367d93b07/c192bc9c22b646a2920c711a12cd9c96/FLAG708f2d21a
[2020-10-27 16:06:28,192 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-27 16:06:28,193 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label00.c
[2020-10-27 16:06:28,244 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/367d93b07/c192bc9c22b646a2920c711a12cd9c96/FLAG708f2d21a
[2020-10-27 16:06:28,394 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/367d93b07/c192bc9c22b646a2920c711a12cd9c96
[2020-10-27 16:06:28,397 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-27 16:06:28,405 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-27 16:06:28,406 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-27 16:06:28,407 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-27 16:06:28,411 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-27 16:06:28,411 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:06:28" (1/1) ...
[2020-10-27 16:06:28,415 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7954a7e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:06:28, skipping insertion in model container
[2020-10-27 16:06:28,415 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:06:28" (1/1) ...
[2020-10-27 16:06:28,424 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-27 16:06:28,638 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-27 16:06:31,050 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-27 16:06:31,062 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-27 16:06:32,335 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-27 16:06:32,413 INFO  L208         MainTranslator]: Completed translation
[2020-10-27 16:06:32,414 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:06:32 WrapperNode
[2020-10-27 16:06:32,414 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-27 16:06:32,415 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-27 16:06:32,416 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-27 16:06:32,416 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-27 16:06:32,432 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:06:32" (1/1) ...
[2020-10-27 16:06:32,433 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:06:32" (1/1) ...
[2020-10-27 16:06:32,605 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:06:32" (1/1) ...
[2020-10-27 16:06:32,606 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:06:32" (1/1) ...
[2020-10-27 16:06:32,808 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:06:32" (1/1) ...
[2020-10-27 16:06:32,858 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:06:32" (1/1) ...
[2020-10-27 16:06:32,907 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:06:32" (1/1) ...
[2020-10-27 16:06:32,969 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-27 16:06:32,970 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-27 16:06:32,970 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-27 16:06:32,970 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-27 16:06:32,971 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:06:32" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-27 16:06:33,055 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-27 16:06:33,056 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-27 16:06:33,056 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2020-10-27 16:06:33,056 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-27 16:06:33,056 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-27 16:06:33,148 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-27 16:06:33,148 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-27 16:06:33,148 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-27 16:06:33,148 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-27 16:06:33,149 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-27 16:06:33,149 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-27 16:06:33,149 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-27 16:06:33,149 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-27 16:06:33,149 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-27 16:06:33,149 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-27 16:06:33,150 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-27 16:06:33,150 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-27 16:06:33,150 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-27 16:06:33,153 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-27 16:06:33,153 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-27 16:06:33,153 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-10-27 16:06:33,154 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-27 16:06:33,154 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2020-10-27 16:06:33,154 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-27 16:06:33,154 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-27 16:06:33,154 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-27 16:06:33,154 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-27 16:06:33,154 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-27 16:06:33,155 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-27 16:06:33,155 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-27 16:06:33,155 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-10-27 16:06:33,155 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-10-27 16:06:33,159 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-27 16:06:41,830 INFO  L293             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-27 16:06:41,830 INFO  L298             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-27 16:06:41,837 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:06:41 BoogieIcfgContainer
[2020-10-27 16:06:41,837 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-27 16:06:41,841 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-27 16:06:41,841 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-27 16:06:41,845 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-27 16:06:41,845 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:06:28" (1/3) ...
[2020-10-27 16:06:41,846 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c0d26a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:06:41, skipping insertion in model container
[2020-10-27 16:06:41,847 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:06:32" (2/3) ...
[2020-10-27 16:06:41,847 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c0d26a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:06:41, skipping insertion in model container
[2020-10-27 16:06:41,847 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:06:41" (3/3) ...
[2020-10-27 16:06:41,849 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem05_label00.c
[2020-10-27 16:06:41,862 INFO  L164   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-27 16:06:41,869 INFO  L176   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-27 16:06:41,884 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-27 16:06:41,937 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2020-10-27 16:06:41,938 INFO  L378      AbstractCegarLoop]: Hoare is true
[2020-10-27 16:06:41,938 INFO  L379      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-27 16:06:41,938 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-27 16:06:41,938 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-27 16:06:41,938 INFO  L382      AbstractCegarLoop]: Difference is false
[2020-10-27 16:06:41,938 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-27 16:06:41,938 INFO  L387      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-27 16:06:41,992 INFO  L276                IsEmpty]: Start isEmpty. Operand 2226 states.
[2020-10-27 16:06:42,114 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1654
[2020-10-27 16:06:42,114 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 16:06:42,117 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]
[2020-10-27 16:06:42,118 INFO  L429      AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 16:06:42,124 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 16:06:42,126 INFO  L82        PathProgramCache]: Analyzing trace with hash -1102237815, now seen corresponding path program 1 times
[2020-10-27 16:06:42,136 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 16:06:42,136 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112504256]
[2020-10-27 16:06:42,137 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 16:06:43,211 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:06:43,893 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:06:48,536 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:06:48,536 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1677
[2020-10-27 16:06:48,536 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 16:06:48,537 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5315
[2020-10-27 16:06:48,539 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:06:48,539 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-27 16:06:48,540 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-27 16:06:48,540 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1668
[2020-10-27 16:06:48,540 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-10-27 16:06:50,546 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 16:06:50,557 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:06:50,561 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:06:50,576 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:06:50,576 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 16:06:50,576 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 16:06:50,577 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 18
[2020-10-27 16:06:50,577 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:06:50,577 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-27 16:06:50,577 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 16:06:50,577 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-27 16:06:50,577 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:06:52,974 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-27 16:06:52,975 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112504256]
[2020-10-27 16:06:52,977 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-27 16:06:52,977 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-10-27 16:06:52,978 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879917418]
[2020-10-27 16:06:52,989 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-27 16:06:52,989 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 16:06:53,002 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-27 16:06:53,003 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-27 16:06:53,005 INFO  L87              Difference]: Start difference. First operand 2226 states. Second operand 4 states.
[2020-10-27 16:07:14,006 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 16:07:14,006 INFO  L93              Difference]: Finished difference Result 6315 states and 11856 transitions.
[2020-10-27 16:07:14,007 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-27 16:07:14,008 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1653
[2020-10-27 16:07:14,016 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 16:07:14,068 INFO  L225             Difference]: With dead ends: 6315
[2020-10-27 16:07:14,068 INFO  L226             Difference]: Without dead ends: 4025
[2020-10-27 16:07:14,082 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-10-27 16:07:14,129 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4025 states.
[2020-10-27 16:07:14,303 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4025 to 3998.
[2020-10-27 16:07:14,304 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3998 states.
[2020-10-27 16:07:14,326 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3998 states to 3998 states and 6428 transitions.
[2020-10-27 16:07:14,328 INFO  L78                 Accepts]: Start accepts. Automaton has 3998 states and 6428 transitions. Word has length 1653
[2020-10-27 16:07:14,335 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 16:07:14,336 INFO  L481      AbstractCegarLoop]: Abstraction has 3998 states and 6428 transitions.
[2020-10-27 16:07:14,337 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-27 16:07:14,337 INFO  L276                IsEmpty]: Start isEmpty. Operand 3998 states and 6428 transitions.
[2020-10-27 16:07:14,482 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1663
[2020-10-27 16:07:14,484 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 16:07:14,485 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]
[2020-10-27 16:07:14,486 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-27 16:07:14,486 INFO  L429      AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 16:07:14,487 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 16:07:14,488 INFO  L82        PathProgramCache]: Analyzing trace with hash -1393795315, now seen corresponding path program 1 times
[2020-10-27 16:07:14,489 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 16:07:14,489 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890791383]
[2020-10-27 16:07:14,490 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 16:07:14,655 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:07:14,686 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:07:17,201 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:07:19,749 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:07:19,750 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1688
[2020-10-27 16:07:19,750 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 16:07:19,750 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5090
[2020-10-27 16:07:19,751 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:07:19,751 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-10-27 16:07:19,751 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 19
[2020-10-27 16:07:19,752 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1665
[2020-10-27 16:07:19,752 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-27 16:07:21,546 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 16:07:21,551 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:07:21,553 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:07:21,563 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:07:21,568 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 16:07:21,568 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 16:07:21,568 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 12
[2020-10-27 16:07:21,568 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:07:21,568 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 16:07:21,569 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 16:07:21,569 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 16:07:21,569 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:07:21,589 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-27 16:07:21,591 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:07:21,598 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:07:21,608 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:07:21,608 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-27 16:07:21,609 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 16:07:21,609 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 16
[2020-10-27 16:07:21,609 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:07:21,609 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-27 16:07:21,609 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 16:07:21,609 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-27 16:07:21,610 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:07:24,471 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-27 16:07:24,472 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890791383]
[2020-10-27 16:07:24,472 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 16:07:24,472 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6
[2020-10-27 16:07:24,473 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456567420]
[2020-10-27 16:07:24,476 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-10-27 16:07:24,477 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 16:07:24,477 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-10-27 16:07:24,478 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-10-27 16:07:24,478 INFO  L87              Difference]: Start difference. First operand 3998 states and 6428 transitions. Second operand 6 states.
[2020-10-27 16:07:59,170 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 16:07:59,171 INFO  L93              Difference]: Finished difference Result 15230 states and 24994 transitions.
[2020-10-27 16:07:59,171 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-10-27 16:07:59,172 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 1662
[2020-10-27 16:07:59,175 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 16:07:59,245 INFO  L225             Difference]: With dead ends: 15230
[2020-10-27 16:07:59,245 INFO  L226             Difference]: Without dead ends: 11238
[2020-10-27 16:07:59,259 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56
[2020-10-27 16:07:59,275 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11238 states.
[2020-10-27 16:07:59,596 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11238 to 11081.
[2020-10-27 16:07:59,596 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 11081 states.
[2020-10-27 16:07:59,642 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11081 states to 11081 states and 17678 transitions.
[2020-10-27 16:07:59,643 INFO  L78                 Accepts]: Start accepts. Automaton has 11081 states and 17678 transitions. Word has length 1662
[2020-10-27 16:07:59,646 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 16:07:59,646 INFO  L481      AbstractCegarLoop]: Abstraction has 11081 states and 17678 transitions.
[2020-10-27 16:07:59,646 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-10-27 16:07:59,646 INFO  L276                IsEmpty]: Start isEmpty. Operand 11081 states and 17678 transitions.
[2020-10-27 16:07:59,704 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1671
[2020-10-27 16:07:59,705 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 16:07:59,706 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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]
[2020-10-27 16:07:59,707 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-27 16:07:59,707 INFO  L429      AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 16:07:59,708 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 16:07:59,709 INFO  L82        PathProgramCache]: Analyzing trace with hash 1630208265, now seen corresponding path program 1 times
[2020-10-27 16:07:59,709 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 16:07:59,709 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586716498]
[2020-10-27 16:07:59,710 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 16:07:59,849 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:07:59,875 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:07:59,929 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:08:04,869 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:08:04,869 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1698
[2020-10-27 16:08:04,870 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 16:08:04,870 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5017
[2020-10-27 16:08:04,873 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:08:04,873 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-27 16:08:04,873 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 19
[2020-10-27 16:08:04,873 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 11
[2020-10-27 16:08:04,873 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:08:05,309 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 16:08:05,312 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:08:05,314 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:08:05,323 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:08:05,323 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 16:08:05,323 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 16:08:05,323 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-10-27 16:08:05,324 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:08:05,324 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 16:08:05,324 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 16:08:05,324 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 16:08:05,324 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:08:05,345 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-27 16:08:05,348 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:08:05,350 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:08:05,359 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:08:05,359 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-27 16:08:05,359 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 16:08:05,360 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-10-27 16:08:05,360 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:08:05,360 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-27 16:08:05,360 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 16:08:05,360 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-27 16:08:05,360 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:08:05,367 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2020-10-27 16:08:05,372 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:08:05,374 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:08:05,392 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:08:05,392 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-10-27 16:08:05,392 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 16:08:05,392 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 19
[2020-10-27 16:08:05,392 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:08:05,393 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-27 16:08:05,393 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-27 16:08:05,393 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-10-27 16:08:05,393 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:08:06,833 INFO  L134       CoverageAnalysis]: Checked inductivity of 19 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-27 16:08:06,834 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586716498]
[2020-10-27 16:08:06,834 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 16:08:06,834 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-27 16:08:06,835 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863195785]
[2020-10-27 16:08:06,837 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-27 16:08:06,837 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 16:08:06,838 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-27 16:08:06,838 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-27 16:08:06,838 INFO  L87              Difference]: Start difference. First operand 11081 states and 17678 transitions. Second operand 7 states.
[2020-10-27 16:08:46,208 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 16:08:46,209 INFO  L93              Difference]: Finished difference Result 29576 states and 49223 transitions.
[2020-10-27 16:08:46,212 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-10-27 16:08:46,213 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1670
[2020-10-27 16:08:46,213 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 16:08:46,316 INFO  L225             Difference]: With dead ends: 29576
[2020-10-27 16:08:46,316 INFO  L226             Difference]: Without dead ends: 18501
[2020-10-27 16:08:46,350 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132
[2020-10-27 16:08:46,373 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 18501 states.
[2020-10-27 16:08:46,811 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 18501 to 18378.
[2020-10-27 16:08:46,811 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 18378 states.
[2020-10-27 16:08:46,859 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18378 states to 18378 states and 27723 transitions.
[2020-10-27 16:08:46,860 INFO  L78                 Accepts]: Start accepts. Automaton has 18378 states and 27723 transitions. Word has length 1670
[2020-10-27 16:08:46,860 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 16:08:46,860 INFO  L481      AbstractCegarLoop]: Abstraction has 18378 states and 27723 transitions.
[2020-10-27 16:08:46,860 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-27 16:08:46,860 INFO  L276                IsEmpty]: Start isEmpty. Operand 18378 states and 27723 transitions.
[2020-10-27 16:08:46,934 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1681
[2020-10-27 16:08:46,934 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 16:08:46,936 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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]
[2020-10-27 16:08:46,936 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-27 16:08:46,937 INFO  L429      AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 16:08:46,938 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 16:08:46,939 INFO  L82        PathProgramCache]: Analyzing trace with hash 1798447805, now seen corresponding path program 1 times
[2020-10-27 16:08:46,939 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 16:08:46,939 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007780342]
[2020-10-27 16:08:46,939 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 16:08:47,064 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:08:47,092 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:08:47,152 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:08:47,379 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:08:48,068 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:08:52,160 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:08:52,160 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1708
[2020-10-27 16:08:52,160 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-27 16:08:52,160 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5092
[2020-10-27 16:08:52,168 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:08:52,168 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-27 16:08:52,169 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 37
[2020-10-27 16:08:52,169 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-27 16:08:52,169 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:08:52,527 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 16:08:52,529 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:08:52,531 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:08:52,535 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:08:52,536 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 16:08:52,536 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 16:08:52,536 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-10-27 16:08:52,536 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:08:52,536 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 16:08:52,536 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 16:08:52,537 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 16:08:52,537 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:08:52,555 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-27 16:08:52,557 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:08:52,558 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:08:52,561 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:08:52,561 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-27 16:08:52,561 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 16:08:52,562 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-27 16:08:52,562 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:08:52,562 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 16:08:52,562 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 16:08:52,562 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 16:08:52,562 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:08:52,564 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2020-10-27 16:08:52,568 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:08:52,571 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:08:52,586 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:08:52,586 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 19
[2020-10-27 16:08:52,586 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 16:08:52,586 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 16
[2020-10-27 16:08:52,587 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:08:52,587 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-27 16:08:52,587 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 16:08:52,587 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-27 16:08:52,587 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:08:53,871 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2020-10-27 16:08:53,872 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1007780342]
[2020-10-27 16:08:53,872 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-27 16:08:53,872 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-10-27 16:08:53,872 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096174081]
[2020-10-27 16:08:53,881 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-27 16:08:53,881 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 16:08:53,881 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-27 16:08:53,882 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-27 16:08:53,882 INFO  L87              Difference]: Start difference. First operand 18378 states and 27723 transitions. Second operand 5 states.
[2020-10-27 16:09:23,388 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 16:09:23,388 INFO  L93              Difference]: Finished difference Result 40485 states and 62040 transitions.
[2020-10-27 16:09:23,389 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-27 16:09:23,390 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 1680
[2020-10-27 16:09:23,390 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 16:09:23,483 INFO  L225             Difference]: With dead ends: 40485
[2020-10-27 16:09:23,483 INFO  L226             Difference]: Without dead ends: 23834
[2020-10-27 16:09:23,523 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2020-10-27 16:09:23,553 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 23834 states.
[2020-10-27 16:09:24,034 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 23834 to 23720.
[2020-10-27 16:09:24,035 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 23720 states.
[2020-10-27 16:09:24,095 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 23720 states to 23720 states and 35370 transitions.
[2020-10-27 16:09:24,096 INFO  L78                 Accepts]: Start accepts. Automaton has 23720 states and 35370 transitions. Word has length 1680
[2020-10-27 16:09:24,097 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 16:09:24,097 INFO  L481      AbstractCegarLoop]: Abstraction has 23720 states and 35370 transitions.
[2020-10-27 16:09:24,097 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-27 16:09:24,097 INFO  L276                IsEmpty]: Start isEmpty. Operand 23720 states and 35370 transitions.
[2020-10-27 16:09:24,185 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1686
[2020-10-27 16:09:24,185 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 16:09:24,187 INFO  L422         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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]
[2020-10-27 16:09:24,187 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-27 16:09:24,187 INFO  L429      AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 16:09:24,188 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 16:09:24,188 INFO  L82        PathProgramCache]: Analyzing trace with hash -1458771720, now seen corresponding path program 1 times
[2020-10-27 16:09:24,189 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 16:09:24,190 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908707787]
[2020-10-27 16:09:24,190 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 16:09:24,317 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:09:24,342 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:09:24,394 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:09:24,484 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:09:28,677 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:09:29,493 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:09:29,493 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1715
[2020-10-27 16:09:29,493 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-27 16:09:29,494 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5172
[2020-10-27 16:09:29,494 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:09:29,494 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-27 16:09:29,494 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 36
[2020-10-27 16:09:29,494 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 11
[2020-10-27 16:09:29,494 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:09:29,968 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 16:09:29,971 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:09:29,974 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:09:29,979 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:09:29,979 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 16:09:29,979 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 16:09:29,980 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-10-27 16:09:29,980 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:09:29,980 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 16:09:29,980 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 16:09:29,980 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 16:09:29,980 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:09:30,002 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-27 16:09:30,004 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:09:30,004 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:09:30,009 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:09:30,009 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-27 16:09:30,009 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 16:09:30,009 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-10-27 16:09:30,009 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:09:30,010 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 16:09:30,010 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 16:09:30,010 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 16:09:30,010 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:09:30,012 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2020-10-27 16:09:30,016 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:09:30,019 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:09:30,033 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:09:30,033 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 16
[2020-10-27 16:09:30,034 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 16:09:30,034 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 16
[2020-10-27 16:09:30,034 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:09:30,034 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-27 16:09:30,034 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 16:09:30,034 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-10-27 16:09:30,034 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:09:30,040 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32
[2020-10-27 16:09:30,042 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:09:30,044 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:09:30,051 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:09:30,051 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-10-27 16:09:30,051 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 16:09:30,051 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-10-27 16:09:30,052 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:09:30,052 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-27 16:09:30,052 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-27 16:09:30,052 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-10-27 16:09:30,052 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:09:31,435 INFO  L134       CoverageAnalysis]: Checked inductivity of 48 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2020-10-27 16:09:31,435 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908707787]
[2020-10-27 16:09:31,436 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 16:09:31,436 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-27 16:09:31,436 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576340465]
[2020-10-27 16:09:31,437 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-27 16:09:31,437 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 16:09:31,438 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-27 16:09:31,438 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-27 16:09:31,438 INFO  L87              Difference]: Start difference. First operand 23720 states and 35370 transitions. Second operand 7 states.
[2020-10-27 16:10:00,286 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 16:10:00,286 INFO  L93              Difference]: Finished difference Result 67540 states and 106525 transitions.
[2020-10-27 16:10:00,289 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-10-27 16:10:00,289 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1685
[2020-10-27 16:10:00,289 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 16:10:00,469 INFO  L225             Difference]: With dead ends: 67540
[2020-10-27 16:10:00,469 INFO  L226             Difference]: Without dead ends: 45547
[2020-10-27 16:10:00,525 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-27 16:10:00,572 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 45547 states.
[2020-10-27 16:10:01,608 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 45547 to 45486.
[2020-10-27 16:10:01,609 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 45486 states.
[2020-10-27 16:10:01,729 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 45486 states to 45486 states and 67972 transitions.
[2020-10-27 16:10:01,731 INFO  L78                 Accepts]: Start accepts. Automaton has 45486 states and 67972 transitions. Word has length 1685
[2020-10-27 16:10:01,731 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 16:10:01,732 INFO  L481      AbstractCegarLoop]: Abstraction has 45486 states and 67972 transitions.
[2020-10-27 16:10:01,732 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-27 16:10:01,732 INFO  L276                IsEmpty]: Start isEmpty. Operand 45486 states and 67972 transitions.
[2020-10-27 16:10:01,912 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1726
[2020-10-27 16:10:01,912 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 16:10:01,914 INFO  L422         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2020-10-27 16:10:01,914 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-10-27 16:10:01,914 INFO  L429      AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 16:10:01,915 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 16:10:01,915 INFO  L82        PathProgramCache]: Analyzing trace with hash -1327472515, now seen corresponding path program 1 times
[2020-10-27 16:10:01,916 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 16:10:01,916 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117007499]
[2020-10-27 16:10:01,916 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 16:10:02,047 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:10:02,073 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:10:02,126 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:10:02,222 FATAL L256   erpolLogProxyWrapper]: Now shrinking...