/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_label47.c


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


This is Ultimate 0.2.0-0f64333
[2020-10-28 10:50:43,074 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-28 10:50:43,078 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-28 10:50:43,139 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-28 10:50:43,139 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-28 10:50:43,145 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-28 10:50:43,148 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-28 10:50:43,153 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-28 10:50:43,156 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-28 10:50:43,162 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-28 10:50:43,164 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-28 10:50:43,165 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-28 10:50:43,166 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-28 10:50:43,169 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-28 10:50:43,171 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-28 10:50:43,173 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-28 10:50:43,174 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-28 10:50:43,177 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-28 10:50:43,197 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-28 10:50:43,207 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-28 10:50:43,209 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-28 10:50:43,215 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-28 10:50:43,217 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-28 10:50:43,219 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-28 10:50:43,225 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-28 10:50:43,229 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-28 10:50:43,229 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-28 10:50:43,230 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-28 10:50:43,232 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-28 10:50:43,233 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-28 10:50:43,234 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-28 10:50:43,235 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-28 10:50:43,237 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-28 10:50:43,238 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-28 10:50:43,239 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-28 10:50:43,240 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-28 10:50:43,240 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-28 10:50:43,241 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-28 10:50:43,241 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-28 10:50:43,242 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-28 10:50:43,243 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-28 10:50:43,251 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 10:50:43,303 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-28 10:50:43,303 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-28 10:50:43,308 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-28 10:50:43,308 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-28 10:50:43,309 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-28 10:50:43,309 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-28 10:50:43,309 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-28 10:50:43,309 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-28 10:50:43,309 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-28 10:50:43,310 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-28 10:50:43,311 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-28 10:50:43,311 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-28 10:50:43,311 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-28 10:50:43,311 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-28 10:50:43,312 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-28 10:50:43,312 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-28 10:50:43,312 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-28 10:50:43,312 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-28 10:50:43,313 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-28 10:50:43,313 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-28 10:50:43,313 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-28 10:50:43,313 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-28 10:50:43,313 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-28 10:50:43,314 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-28 10:50:43,314 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-28 10:50:43,314 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-28 10:50:43,314 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-28 10:50:43,314 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-28 10:50:43,315 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-28 10:50:43,315 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true;
[2020-10-28 10:50:43,733 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-28 10:50:43,764 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-28 10:50:43,767 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-28 10:50:43,768 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-28 10:50:43,768 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-28 10:50:43,769 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label47.c
[2020-10-28 10:50:43,835 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55e8abf9a/c1c8ffd148354d49ba8b7a3476335e34/FLAG6a3057069
[2020-10-28 10:50:45,055 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-28 10:50:45,056 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label47.c
[2020-10-28 10:50:45,100 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55e8abf9a/c1c8ffd148354d49ba8b7a3476335e34/FLAG6a3057069
[2020-10-28 10:50:45,296 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55e8abf9a/c1c8ffd148354d49ba8b7a3476335e34
[2020-10-28 10:50:45,301 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-28 10:50:45,311 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-28 10:50:45,316 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-28 10:50:45,316 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-28 10:50:45,320 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-28 10:50:45,322 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:50:45" (1/1) ...
[2020-10-28 10:50:45,326 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c3578e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:45, skipping insertion in model container
[2020-10-28 10:50:45,327 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:50:45" (1/1) ...
[2020-10-28 10:50:45,336 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-28 10:50:45,601 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-28 10:50:47,776 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-28 10:50:47,795 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-28 10:50:49,144 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-28 10:50:49,226 INFO  L208         MainTranslator]: Completed translation
[2020-10-28 10:50:49,227 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:49 WrapperNode
[2020-10-28 10:50:49,228 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-28 10:50:49,229 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-28 10:50:49,230 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-28 10:50:49,230 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-28 10:50:49,247 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:49" (1/1) ...
[2020-10-28 10:50:49,250 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:49" (1/1) ...
[2020-10-28 10:50:49,367 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:49" (1/1) ...
[2020-10-28 10:50:49,367 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:49" (1/1) ...
[2020-10-28 10:50:49,597 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:49" (1/1) ...
[2020-10-28 10:50:49,741 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:49" (1/1) ...
[2020-10-28 10:50:49,787 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:49" (1/1) ...
[2020-10-28 10:50:49,894 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-28 10:50:49,896 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-28 10:50:49,896 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-28 10:50:49,897 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-28 10:50:49,898 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:49" (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 10:50:49,985 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-28 10:50:49,986 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-28 10:50:49,986 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2020-10-28 10:50:49,986 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-28 10:50:49,986 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-28 10:50:49,986 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-28 10:50:49,986 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-28 10:50:49,987 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-28 10:50:49,987 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-28 10:50:49,987 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-28 10:50:49,987 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-28 10:50:49,987 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-28 10:50:49,987 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-28 10:50:49,987 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-28 10:50:49,988 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-28 10:50:49,988 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-28 10:50:49,988 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-28 10:50:49,988 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-28 10:50:49,988 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-28 10:50:49,988 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-28 10:50:49,989 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-10-28 10:50:49,989 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-28 10:50:49,989 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2020-10-28 10:50:49,989 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-28 10:50:49,989 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-28 10:50:49,989 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-28 10:50:49,989 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-28 10:50:49,990 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-28 10:50:49,990 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-28 10:50:49,990 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-28 10:50:49,990 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-10-28 10:50:49,990 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-10-28 10:50:49,990 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-28 10:50:59,776 INFO  L293             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-28 10:50:59,777 INFO  L298             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-28 10:50:59,782 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:50:59 BoogieIcfgContainer
[2020-10-28 10:50:59,782 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-28 10:50:59,784 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-28 10:50:59,784 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-28 10:50:59,788 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-28 10:50:59,789 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:50:45" (1/3) ...
[2020-10-28 10:50:59,790 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@538f8284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:50:59, skipping insertion in model container
[2020-10-28 10:50:59,790 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:49" (2/3) ...
[2020-10-28 10:50:59,790 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@538f8284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:50:59, skipping insertion in model container
[2020-10-28 10:50:59,790 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:50:59" (3/3) ...
[2020-10-28 10:50:59,792 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem05_label47.c
[2020-10-28 10:50:59,805 INFO  L164   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-28 10:50:59,812 INFO  L176   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-28 10:50:59,826 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-28 10:50:59,864 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2020-10-28 10:50:59,864 INFO  L378      AbstractCegarLoop]: Hoare is true
[2020-10-28 10:50:59,864 INFO  L379      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-28 10:50:59,864 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-28 10:50:59,865 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-28 10:50:59,865 INFO  L382      AbstractCegarLoop]: Difference is false
[2020-10-28 10:50:59,865 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-28 10:50:59,865 INFO  L387      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-28 10:50:59,917 INFO  L276                IsEmpty]: Start isEmpty. Operand 2226 states.
[2020-10-28 10:51:00,064 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1677
[2020-10-28 10:51:00,064 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:51:00,067 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-28 10:51:00,068 INFO  L429      AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:51:00,082 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:51:00,084 INFO  L82        PathProgramCache]: Analyzing trace with hash 1210561719, now seen corresponding path program 1 times
[2020-10-28 10:51:00,093 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:51:00,094 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041532610]
[2020-10-28 10:51:00,095 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:51:01,424 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:51:01,924 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:51:06,579 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:51:06,579 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1700
[2020-10-28 10:51:06,580 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:51:06,581 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5144
[2020-10-28 10:51:06,583 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:51:06,584 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:51:06,584 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-28 10:51:06,585 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-28 10:51:06,585 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1691
[2020-10-28 10:51:06,586 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 5
[2020-10-28 10:51:08,674 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:51:08,691 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:51:08,696 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:51:08,716 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:51:08,716 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:51:08,717 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:51:08,717 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 23
[2020-10-28 10:51:08,717 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:51:08,717 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:51:08,718 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:51:08,718 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:51:08,718 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-28 10:51:08,718 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:51:11,868 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 10:51:11,869 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041532610]
[2020-10-28 10:51:11,871 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-28 10:51:11,871 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-10-28 10:51:11,872 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955549427]
[2020-10-28 10:51:11,881 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-28 10:51:11,881 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:51:11,895 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-28 10:51:11,896 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-28 10:51:11,898 INFO  L87              Difference]: Start difference. First operand 2226 states. Second operand 5 states.
[2020-10-28 10:51:46,699 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-28 10:51:46,700 INFO  L93              Difference]: Finished difference Result 8130 states and 15411 transitions.
[2020-10-28 10:51:46,701 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-10-28 10:51:46,702 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 1676
[2020-10-28 10:51:46,715 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-28 10:51:46,787 INFO  L225             Difference]: With dead ends: 8130
[2020-10-28 10:51:46,787 INFO  L226             Difference]: Without dead ends: 5836
[2020-10-28 10:51:46,808 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2020-10-28 10:51:46,839 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5836 states.
[2020-10-28 10:51:47,084 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5836 to 5802.
[2020-10-28 10:51:47,086 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5802 states.
[2020-10-28 10:51:47,123 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5802 states to 5802 states and 9385 transitions.
[2020-10-28 10:51:47,125 INFO  L78                 Accepts]: Start accepts. Automaton has 5802 states and 9385 transitions. Word has length 1676
[2020-10-28 10:51:47,130 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-28 10:51:47,131 INFO  L481      AbstractCegarLoop]: Abstraction has 5802 states and 9385 transitions.
[2020-10-28 10:51:47,131 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-28 10:51:47,131 INFO  L276                IsEmpty]: Start isEmpty. Operand 5802 states and 9385 transitions.
[2020-10-28 10:51:47,376 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1701
[2020-10-28 10:51:47,377 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:51:47,378 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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]
[2020-10-28 10:51:47,379 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-28 10:51:47,381 INFO  L429      AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:51:47,382 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:51:47,382 INFO  L82        PathProgramCache]: Analyzing trace with hash -1592611612, now seen corresponding path program 1 times
[2020-10-28 10:51:47,383 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:51:47,383 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657450048]
[2020-10-28 10:51:47,384 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:51:47,584 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:51:47,614 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:51:47,693 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:51:48,033 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:51:52,731 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:51:52,731 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1728
[2020-10-28 10:51:52,731 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-28 10:51:52,731 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5143
[2020-10-28 10:51:52,732 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:51:52,733 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:51:52,733 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:51:52,733 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 19
[2020-10-28 10:51:52,733 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 18
[2020-10-28 10:51:52,733 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:51:53,926 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:51:53,930 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:51:53,932 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:51:53,940 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:51:53,940 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:51:53,940 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:51:53,940 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-10-28 10:51:53,941 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:51:53,941 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:51:53,941 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-28 10:51:53,941 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:51:53,941 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-28 10:51:53,942 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:51:53,967 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-28 10:51:53,970 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:51:53,976 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:51:53,985 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:51:53,985 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-28 10:51:53,986 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:51:53,986 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-10-28 10:51:53,986 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:51:53,986 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:51:53,986 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:51:53,986 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:51:53,987 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-28 10:51:53,987 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:51:53,992 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2020-10-28 10:51:54,001 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:51:54,005 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:51:54,038 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:51:54,039 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 16
[2020-10-28 10:51:54,039 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:51:54,039 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 36
[2020-10-28 10:51:54,039 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:51:54,039 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:51:54,040 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:51:54,040 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-28 10:51:54,040 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 16
[2020-10-28 10:51:54,040 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:51:55,305 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-28 10:51:55,305 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657450048]
[2020-10-28 10:51:55,306 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-28 10:51:55,306 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-28 10:51:55,306 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913680870]
[2020-10-28 10:51:55,317 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-28 10:51:55,318 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:51:55,319 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-28 10:51:55,320 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-28 10:51:55,320 INFO  L87              Difference]: Start difference. First operand 5802 states and 9385 transitions. Second operand 7 states.
[2020-10-28 10:52:42,535 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-28 10:52:42,536 INFO  L93              Difference]: Finished difference Result 22553 states and 37609 transitions.
[2020-10-28 10:52:42,537 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-28 10:52:42,537 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1700
[2020-10-28 10:52:42,538 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-28 10:52:42,632 INFO  L225             Difference]: With dead ends: 22553
[2020-10-28 10:52:42,632 INFO  L226             Difference]: Without dead ends: 16757
[2020-10-28 10:52:42,654 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-28 10:52:42,676 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16757 states.
[2020-10-28 10:52:43,101 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16757 to 16657.
[2020-10-28 10:52:43,102 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 16657 states.
[2020-10-28 10:52:43,152 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16657 states to 16657 states and 22520 transitions.
[2020-10-28 10:52:43,152 INFO  L78                 Accepts]: Start accepts. Automaton has 16657 states and 22520 transitions. Word has length 1700
[2020-10-28 10:52:43,153 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-28 10:52:43,153 INFO  L481      AbstractCegarLoop]: Abstraction has 16657 states and 22520 transitions.
[2020-10-28 10:52:43,153 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-28 10:52:43,154 INFO  L276                IsEmpty]: Start isEmpty. Operand 16657 states and 22520 transitions.
[2020-10-28 10:52:43,293 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1710
[2020-10-28 10:52:43,293 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:52:43,295 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 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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]
[2020-10-28 10:52:43,295 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-28 10:52:43,295 INFO  L429      AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:52:43,296 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:52:43,296 INFO  L82        PathProgramCache]: Analyzing trace with hash 1286962681, now seen corresponding path program 1 times
[2020-10-28 10:52:43,297 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:52:43,297 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336214501]
[2020-10-28 10:52:43,297 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:52:43,457 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:52:43,481 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:52:43,534 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:52:43,617 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:52:45,520 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:52:48,525 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:52:48,525 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1737
[2020-10-28 10:52:48,525 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-28 10:52:48,526 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5065
[2020-10-28 10:52:48,526 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:52:48,526 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:52:48,526 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:52:48,526 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 43
[2020-10-28 10:52:48,527 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-28 10:52:48,527 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:52:49,051 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:52:49,054 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:52:49,056 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:52:49,061 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:52:49,061 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:52:49,062 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:52:49,062 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-10-28 10:52:49,062 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:52:49,062 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:52:49,062 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-28 10:52:49,062 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:52:49,063 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-28 10:52:49,063 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:52:49,087 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-28 10:52:49,089 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:52:49,091 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:52:49,098 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:52:49,098 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 16
[2020-10-28 10:52:49,098 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:52:49,098 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-10-28 10:52:49,099 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:52:49,099 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:52:49,099 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-28 10:52:49,099 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:52:49,099 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-28 10:52:49,100 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:52:49,107 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-10-28 10:52:49,112 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:52:49,115 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:52:49,132 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:52:49,133 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 19
[2020-10-28 10:52:49,133 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:52:49,133 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 19
[2020-10-28 10:52:49,133 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:52:49,134 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:52:49,134 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:52:49,134 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-28 10:52:49,141 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-28 10:52:49,141 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 7
[2020-10-28 10:52:50,396 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2020-10-28 10:52:50,397 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336214501]
[2020-10-28 10:52:50,397 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-28 10:52:50,397 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-10-28 10:52:50,398 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560108859]
[2020-10-28 10:52:50,400 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-28 10:52:50,400 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:52:50,401 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-28 10:52:50,401 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-28 10:52:50,401 INFO  L87              Difference]: Start difference. First operand 16657 states and 22520 transitions. Second operand 5 states.
[2020-10-28 10:53:22,662 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-28 10:53:22,663 INFO  L93              Difference]: Finished difference Result 49523 states and 69661 transitions.
[2020-10-28 10:53:22,664 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-28 10:53:22,664 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 1709
[2020-10-28 10:53:22,664 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-28 10:53:22,827 INFO  L225             Difference]: With dead ends: 49523
[2020-10-28 10:53:22,827 INFO  L226             Difference]: Without dead ends: 32872
[2020-10-28 10:53:22,877 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2020-10-28 10:53:22,928 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 32872 states.
[2020-10-28 10:53:23,758 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 32872 to 32752.
[2020-10-28 10:53:23,759 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32752 states.
[2020-10-28 10:53:23,858 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32752 states to 32752 states and 44156 transitions.
[2020-10-28 10:53:23,859 INFO  L78                 Accepts]: Start accepts. Automaton has 32752 states and 44156 transitions. Word has length 1709
[2020-10-28 10:53:23,859 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-28 10:53:23,859 INFO  L481      AbstractCegarLoop]: Abstraction has 32752 states and 44156 transitions.
[2020-10-28 10:53:23,860 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-28 10:53:23,860 INFO  L276                IsEmpty]: Start isEmpty. Operand 32752 states and 44156 transitions.
[2020-10-28 10:53:24,037 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1717
[2020-10-28 10:53:24,038 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:53:24,039 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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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]
[2020-10-28 10:53:24,039 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-28 10:53:24,040 INFO  L429      AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:53:24,040 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:53:24,041 INFO  L82        PathProgramCache]: Analyzing trace with hash 1754983494, now seen corresponding path program 1 times
[2020-10-28 10:53:24,041 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:53:24,042 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518113369]
[2020-10-28 10:53:24,042 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:53:24,189 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:53:24,244 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:53:24,570 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:53:29,241 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:53:29,241 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1742
[2020-10-28 10:53:29,242 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-28 10:53:29,242 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5048
[2020-10-28 10:53:29,242 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:53:29,242 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:53:29,242 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-28 10:53:29,242 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-28 10:53:29,243 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 46
[2020-10-28 10:53:29,243 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:53:29,653 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:53:29,657 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:53:29,660 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:53:29,669 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:53:29,669 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:53:29,669 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:53:29,669 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-10-28 10:53:29,669 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:53:29,670 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:53:29,670 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:53:29,670 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:53:29,670 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-28 10:53:29,670 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:53:29,703 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-28 10:53:29,714 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:53:29,721 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:53:29,803 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:53:29,803 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 41
[2020-10-28 10:53:29,803 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:53:29,804 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 88
[2020-10-28 10:53:29,804 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:53:29,804 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:53:29,804 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:53:29,804 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-28 10:53:29,805 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 41
[2020-10-28 10:53:29,805 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:53:31,291 INFO  L134       CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-28 10:53:31,291 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518113369]
[2020-10-28 10:53:31,292 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-28 10:53:31,292 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-28 10:53:31,292 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316098311]
[2020-10-28 10:53:31,294 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-28 10:53:31,294 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:53:31,295 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-28 10:53:31,295 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-28 10:53:31,295 INFO  L87              Difference]: Start difference. First operand 32752 states and 44156 transitions. Second operand 7 states.
[2020-10-28 10:54:06,314 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-28 10:54:06,314 INFO  L93              Difference]: Finished difference Result 66473 states and 96985 transitions.
[2020-10-28 10:54:06,318 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-28 10:54:06,318 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1716
[2020-10-28 10:54:06,318 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-28 10:54:06,439 INFO  L225             Difference]: With dead ends: 66473
[2020-10-28 10:54:06,439 INFO  L226             Difference]: Without dead ends: 33727
[2020-10-28 10:54:06,527 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-28 10:54:06,561 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 33727 states.
[2020-10-28 10:54:07,264 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 33727 to 33250.
[2020-10-28 10:54:07,264 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 33250 states.
[2020-10-28 10:54:07,351 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 33250 states to 33250 states and 45147 transitions.
[2020-10-28 10:54:07,353 INFO  L78                 Accepts]: Start accepts. Automaton has 33250 states and 45147 transitions. Word has length 1716
[2020-10-28 10:54:07,354 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-28 10:54:07,354 INFO  L481      AbstractCegarLoop]: Abstraction has 33250 states and 45147 transitions.
[2020-10-28 10:54:07,354 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-28 10:54:07,354 INFO  L276                IsEmpty]: Start isEmpty. Operand 33250 states and 45147 transitions.
[2020-10-28 10:54:07,461 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1718
[2020-10-28 10:54:07,461 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:54:07,463 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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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]
[2020-10-28 10:54:07,463 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-28 10:54:07,463 INFO  L429      AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:54:07,464 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:54:07,464 INFO  L82        PathProgramCache]: Analyzing trace with hash 2123648965, now seen corresponding path program 1 times
[2020-10-28 10:54:07,465 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:54:07,465 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514703082]
[2020-10-28 10:54:07,466 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:54:07,592 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:54:07,629 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:54:09,076 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:54:12,809 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:54:12,809 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1743
[2020-10-28 10:54:12,809 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-28 10:54:12,809 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5209
[2020-10-28 10:54:12,810 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:54:12,810 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:54:12,810 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-28 10:54:12,810 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-28 10:54:12,810 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 47
[2020-10-28 10:54:12,813 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-28 10:54:13,288 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:54:13,294 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:54:13,297 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:54:13,308 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:54:13,309 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:54:13,309 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:54:13,309 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 13
[2020-10-28 10:54:13,309 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:54:13,309 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:54:13,309 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:54:13,309 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:54:13,310 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-28 10:54:13,310 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:54:13,342 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-28 10:54:13,352 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:54:13,360 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:54:13,429 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:54:13,430 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 42
[2020-10-28 10:54:13,430 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:54:13,430 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 76
[2020-10-28 10:54:13,430 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:54:13,430 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:54:13,430 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:54:13,431 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-28 10:54:13,431 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 42
[2020-10-28 10:54:13,431 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:54:14,868 INFO  L134       CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-28 10:54:14,868 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514703082]
[2020-10-28 10:54:14,868 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-28 10:54:14,869 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-28 10:54:14,869 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224379460]
[2020-10-28 10:54:14,871 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-28 10:54:14,871 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:54:14,871 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-28 10:54:14,871 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2020-10-28 10:54:14,871 INFO  L87              Difference]: Start difference. First operand 33250 states and 45147 transitions. Second operand 7 states.