/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_label52.c


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


This is Ultimate 0.2.0-0f64333
[2020-10-28 10:51:42,696 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-28 10:51:42,699 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-28 10:51:42,736 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-28 10:51:42,737 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-28 10:51:42,738 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-28 10:51:42,740 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-28 10:51:42,742 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-28 10:51:42,745 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-28 10:51:42,746 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-28 10:51:42,747 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-28 10:51:42,749 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-28 10:51:42,749 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-28 10:51:42,751 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-28 10:51:42,752 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-28 10:51:42,754 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-28 10:51:42,755 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-28 10:51:42,756 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-28 10:51:42,758 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-28 10:51:42,761 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-28 10:51:42,763 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-28 10:51:42,764 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-28 10:51:42,768 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-28 10:51:42,785 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-28 10:51:42,789 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-28 10:51:42,790 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-28 10:51:42,790 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-28 10:51:42,791 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-28 10:51:42,792 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-28 10:51:42,793 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-28 10:51:42,794 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-28 10:51:42,794 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-28 10:51:42,796 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-28 10:51:42,797 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-28 10:51:42,798 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-28 10:51:42,798 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-28 10:51:42,799 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-28 10:51:42,800 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-28 10:51:42,800 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-28 10:51:42,801 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-28 10:51:42,802 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-28 10:51:42,804 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 10:51:42,832 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-28 10:51:42,832 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-28 10:51:42,834 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-28 10:51:42,834 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-28 10:51:42,835 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-28 10:51:42,835 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-28 10:51:42,835 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-28 10:51:42,836 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-28 10:51:42,836 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-28 10:51:42,836 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-28 10:51:42,836 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-28 10:51:42,837 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-28 10:51:42,837 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-28 10:51:42,837 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-28 10:51:42,838 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-28 10:51:42,838 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-28 10:51:42,838 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-28 10:51:42,838 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-28 10:51:42,839 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-28 10:51:42,839 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-28 10:51:42,839 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-28 10:51:42,840 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-28 10:51:42,840 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-28 10:51:42,840 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-28 10:51:42,840 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-28 10:51:42,841 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-28 10:51:42,841 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-28 10:51:42,841 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-28 10:51:42,842 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-28 10:51:42,842 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true;
[2020-10-28 10:51:43,197 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-28 10:51:43,227 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-28 10:51:43,231 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-28 10:51:43,232 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-28 10:51:43,233 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-28 10:51:43,235 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label52.c
[2020-10-28 10:51:43,322 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f5882e764/754821169e7b448abc0be39580e43c79/FLAGb98692ea8
[2020-10-28 10:51:44,665 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-28 10:51:44,665 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label52.c
[2020-10-28 10:51:44,734 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f5882e764/754821169e7b448abc0be39580e43c79/FLAGb98692ea8
[2020-10-28 10:51:44,749 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f5882e764/754821169e7b448abc0be39580e43c79
[2020-10-28 10:51:44,752 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-28 10:51:44,759 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-28 10:51:44,761 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-28 10:51:44,761 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-28 10:51:44,765 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-28 10:51:44,766 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:51:44" (1/1) ...
[2020-10-28 10:51:44,769 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a72b053 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:51:44, skipping insertion in model container
[2020-10-28 10:51:44,769 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:51:44" (1/1) ...
[2020-10-28 10:51:44,778 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-28 10:51:45,000 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-28 10:51:47,316 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-28 10:51:47,333 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-28 10:51:48,480 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-28 10:51:48,551 INFO  L208         MainTranslator]: Completed translation
[2020-10-28 10:51:48,552 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:51:48 WrapperNode
[2020-10-28 10:51:48,552 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-28 10:51:48,553 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-28 10:51:48,553 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-28 10:51:48,553 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-28 10:51:48,567 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:51:48" (1/1) ...
[2020-10-28 10:51:48,569 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:51:48" (1/1) ...
[2020-10-28 10:51:48,681 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:51:48" (1/1) ...
[2020-10-28 10:51:48,682 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:51:48" (1/1) ...
[2020-10-28 10:51:48,932 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:51:48" (1/1) ...
[2020-10-28 10:51:48,987 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:51:48" (1/1) ...
[2020-10-28 10:51:49,038 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:51:48" (1/1) ...
[2020-10-28 10:51:49,163 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-28 10:51:49,165 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-28 10:51:49,165 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-28 10:51:49,165 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-28 10:51:49,166 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:51:48" (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 10:51:49,247 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-28 10:51:49,247 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-28 10:51:49,247 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2020-10-28 10:51:49,247 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-28 10:51:49,247 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-28 10:51:49,248 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-28 10:51:49,248 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-28 10:51:49,248 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-28 10:51:49,248 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-28 10:51:49,248 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-28 10:51:49,248 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-28 10:51:49,249 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-28 10:51:49,249 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-28 10:51:49,249 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-28 10:51:49,249 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-28 10:51:49,249 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-28 10:51:49,250 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-28 10:51:49,250 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-28 10:51:49,250 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-28 10:51:49,250 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-28 10:51:49,250 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-10-28 10:51:49,250 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-28 10:51:49,251 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2020-10-28 10:51:49,251 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-28 10:51:49,251 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-28 10:51:49,251 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-28 10:51:49,251 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-28 10:51:49,251 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-28 10:51:49,252 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-28 10:51:49,252 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-28 10:51:49,252 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-10-28 10:51:49,252 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-10-28 10:51:49,252 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-28 10:51:59,038 INFO  L293             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-28 10:51:59,039 INFO  L298             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-28 10:51:59,045 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:51:59 BoogieIcfgContainer
[2020-10-28 10:51:59,045 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-28 10:51:59,050 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-28 10:51:59,050 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-28 10:51:59,054 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-28 10:51:59,054 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:51:44" (1/3) ...
[2020-10-28 10:51:59,055 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e89e41b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:51:59, skipping insertion in model container
[2020-10-28 10:51:59,055 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:51:48" (2/3) ...
[2020-10-28 10:51:59,055 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e89e41b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:51:59, skipping insertion in model container
[2020-10-28 10:51:59,055 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:51:59" (3/3) ...
[2020-10-28 10:51:59,057 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem05_label52.c
[2020-10-28 10:51:59,068 INFO  L164   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-28 10:51:59,075 INFO  L176   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-28 10:51:59,088 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-28 10:51:59,138 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2020-10-28 10:51:59,138 INFO  L378      AbstractCegarLoop]: Hoare is true
[2020-10-28 10:51:59,138 INFO  L379      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-28 10:51:59,138 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-28 10:51:59,138 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-28 10:51:59,139 INFO  L382      AbstractCegarLoop]: Difference is false
[2020-10-28 10:51:59,139 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-28 10:51:59,139 INFO  L387      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-28 10:51:59,196 INFO  L276                IsEmpty]: Start isEmpty. Operand 2226 states.
[2020-10-28 10:51:59,327 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1700
[2020-10-28 10:51:59,327 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:51:59,330 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, 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 10:51:59,330 INFO  L429      AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:51:59,337 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:51:59,338 INFO  L82        PathProgramCache]: Analyzing trace with hash 1237586305, now seen corresponding path program 1 times
[2020-10-28 10:51:59,349 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:51:59,349 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764222420]
[2020-10-28 10:51:59,350 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:52:00,360 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:52:01,023 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:52:05,617 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:52:05,617 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1723
[2020-10-28 10:52:05,618 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:52:05,618 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5248
[2020-10-28 10:52:05,620 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:52:05,621 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:52:05,621 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-28 10:52:05,621 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-28 10:52:05,622 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1714
[2020-10-28 10:52:05,622 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-28 10:52:07,262 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:52:07,287 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:52:07,293 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:52:07,328 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:52:07,328 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:52:07,328 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:52:07,329 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 40
[2020-10-28 10:52:07,329 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:52:07,329 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:52:07,329 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:52:07,330 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:52:07,330 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-28 10:52:07,330 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:52:10,996 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 10:52:10,997 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764222420]
[2020-10-28 10:52:10,999 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-28 10:52:10,999 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-10-28 10:52:11,000 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128753074]
[2020-10-28 10:52:11,009 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-28 10:52:11,009 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:52:11,023 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-28 10:52:11,024 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-28 10:52:11,026 INFO  L87              Difference]: Start difference. First operand 2226 states. Second operand 5 states.
[2020-10-28 10:52:45,885 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-28 10:52:45,885 INFO  L93              Difference]: Finished difference Result 8284 states and 15705 transitions.
[2020-10-28 10:52:45,887 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-10-28 10:52:45,888 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 1699
[2020-10-28 10:52:45,901 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-28 10:52:45,972 INFO  L225             Difference]: With dead ends: 8284
[2020-10-28 10:52:45,972 INFO  L226             Difference]: Without dead ends: 5990
[2020-10-28 10:52:45,994 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 10:52:46,030 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5990 states.
[2020-10-28 10:52:46,277 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5990 to 5834.
[2020-10-28 10:52:46,278 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5834 states.
[2020-10-28 10:52:46,314 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5834 states to 5834 states and 10150 transitions.
[2020-10-28 10:52:46,316 INFO  L78                 Accepts]: Start accepts. Automaton has 5834 states and 10150 transitions. Word has length 1699
[2020-10-28 10:52:46,321 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-28 10:52:46,322 INFO  L481      AbstractCegarLoop]: Abstraction has 5834 states and 10150 transitions.
[2020-10-28 10:52:46,322 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-28 10:52:46,322 INFO  L276                IsEmpty]: Start isEmpty. Operand 5834 states and 10150 transitions.
[2020-10-28 10:52:46,585 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1733
[2020-10-28 10:52:46,586 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:52:46,587 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2020-10-28 10:52:46,588 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-28 10:52:46,588 INFO  L429      AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:52:46,589 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:52:46,589 INFO  L82        PathProgramCache]: Analyzing trace with hash 1908555200, now seen corresponding path program 1 times
[2020-10-28 10:52:46,590 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:52:46,590 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270955043]
[2020-10-28 10:52:46,590 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:52:46,804 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:52:46,835 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:52:46,930 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:52:52,030 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:52:52,031 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1760
[2020-10-28 10:52:52,031 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-28 10:52:52,031 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5222
[2020-10-28 10:52:52,032 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:52:52,032 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:52:52,033 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:52:52,034 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 22
[2020-10-28 10:52:52,034 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 24
[2020-10-28 10:52:52,034 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-28 10:52:53,804 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:52:53,808 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:52:53,811 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:52:53,822 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:52:53,823 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:52:53,823 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:52:53,823 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 12
[2020-10-28 10:52:53,823 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:52:53,823 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:52:53,824 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-28 10:52:53,824 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:52:53,824 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-28 10:52:53,824 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:52:53,846 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-28 10:52:53,854 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:52:53,856 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:52:53,863 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:52:53,864 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-10-28 10:52:53,864 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:52:53,864 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-10-28 10:52:53,864 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:52:53,865 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:52:53,865 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:52:53,865 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:52:53,865 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-10-28 10:52:53,865 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:52:53,883 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20
[2020-10-28 10:52:53,893 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:52:53,898 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:52:53,944 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:52:53,945 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 22
[2020-10-28 10:52:53,945 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:52:53,945 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 50
[2020-10-28 10:52:53,945 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:52:53,945 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:52:53,945 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:52:53,946 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-28 10:52:53,946 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 22
[2020-10-28 10:52:53,946 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:52:55,250 INFO  L134       CoverageAnalysis]: Checked inductivity of 39 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-28 10:52:55,251 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270955043]
[2020-10-28 10:52:55,251 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-28 10:52:55,252 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-28 10:52:55,252 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805398582]
[2020-10-28 10:52:55,256 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-28 10:52:55,256 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:52:55,257 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-28 10:52:55,257 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-28 10:52:55,257 INFO  L87              Difference]: Start difference. First operand 5834 states and 10150 transitions. Second operand 7 states.
[2020-10-28 10:53:39,557 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-28 10:53:39,557 INFO  L93              Difference]: Finished difference Result 22591 states and 40498 transitions.
[2020-10-28 10:53:39,558 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-28 10:53:39,558 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1732
[2020-10-28 10:53:39,559 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-28 10:53:39,657 INFO  L225             Difference]: With dead ends: 22591
[2020-10-28 10:53:39,657 INFO  L226             Difference]: Without dead ends: 16763
[2020-10-28 10:53:39,681 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 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 10:53:39,701 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16763 states.
[2020-10-28 10:53:40,198 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16763 to 16746.
[2020-10-28 10:53:40,198 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 16746 states.
[2020-10-28 10:53:40,244 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16746 states to 16746 states and 24639 transitions.
[2020-10-28 10:53:40,245 INFO  L78                 Accepts]: Start accepts. Automaton has 16746 states and 24639 transitions. Word has length 1732
[2020-10-28 10:53:40,245 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-28 10:53:40,245 INFO  L481      AbstractCegarLoop]: Abstraction has 16746 states and 24639 transitions.
[2020-10-28 10:53:40,246 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-28 10:53:40,247 INFO  L276                IsEmpty]: Start isEmpty. Operand 16746 states and 24639 transitions.
[2020-10-28 10:53:40,416 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1732
[2020-10-28 10:53:40,417 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:53:40,419 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2020-10-28 10:53:40,420 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-28 10:53:40,420 INFO  L429      AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:53:40,420 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:53:40,421 INFO  L82        PathProgramCache]: Analyzing trace with hash 609493691, now seen corresponding path program 1 times
[2020-10-28 10:53:40,421 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:53:40,422 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140197572]
[2020-10-28 10:53:40,422 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:53:40,790 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:53:40,973 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:53:41,482 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:53:45,986 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:53:45,987 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1757
[2020-10-28 10:53:45,987 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-28 10:53:45,987 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5192
[2020-10-28 10:53:45,992 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:53:45,992 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:53:45,992 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-28 10:53:45,993 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-28 10:53:45,993 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 38
[2020-10-28 10:53:45,993 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:53:46,500 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:53:46,505 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:53:46,508 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:53:46,540 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:53:46,541 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:53:46,541 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:53:46,541 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 34
[2020-10-28 10:53:46,541 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:53:46,541 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:53:46,541 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:53:46,541 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:53:46,542 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-28 10:53:46,542 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:53:46,579 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-28 10:53:46,588 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:53:46,597 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:53:46,649 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:53:46,650 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 33
[2020-10-28 10:53:46,650 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:53:46,650 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 60
[2020-10-28 10:53:46,650 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:53:46,650 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:53:46,651 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:53:46,651 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-28 10:53:46,651 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 33
[2020-10-28 10:53:46,651 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:53:48,309 INFO  L134       CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-28 10:53:48,309 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140197572]
[2020-10-28 10:53:48,310 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-28 10:53:48,310 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-28 10:53:48,310 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647950351]
[2020-10-28 10:53:48,313 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-28 10:53:48,313 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:53:48,313 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-28 10:53:48,314 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2020-10-28 10:53:48,314 INFO  L87              Difference]: Start difference. First operand 16746 states and 24639 transitions. Second operand 7 states.
[2020-10-28 10:54:19,662 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-28 10:54:19,663 INFO  L93              Difference]: Finished difference Result 49951 states and 76529 transitions.
[2020-10-28 10:54:19,664 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-10-28 10:54:19,664 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1731
[2020-10-28 10:54:19,664 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-28 10:54:19,890 INFO  L225             Difference]: With dead ends: 49951
[2020-10-28 10:54:19,890 INFO  L226             Difference]: Without dead ends: 33211
[2020-10-28 10:54:19,948 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110
[2020-10-28 10:54:19,985 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 33211 states.
[2020-10-28 10:54:20,645 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 33211 to 33207.
[2020-10-28 10:54:20,646 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 33207 states.
[2020-10-28 10:54:20,728 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 33207 states to 33207 states and 48514 transitions.
[2020-10-28 10:54:20,729 INFO  L78                 Accepts]: Start accepts. Automaton has 33207 states and 48514 transitions. Word has length 1731
[2020-10-28 10:54:20,730 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-28 10:54:20,730 INFO  L481      AbstractCegarLoop]: Abstraction has 33207 states and 48514 transitions.
[2020-10-28 10:54:20,730 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-28 10:54:20,730 INFO  L276                IsEmpty]: Start isEmpty. Operand 33207 states and 48514 transitions.
[2020-10-28 10:54:20,858 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1768
[2020-10-28 10:54:20,858 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:54:20,860 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2020-10-28 10:54:20,860 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-28 10:54:20,861 INFO  L429      AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:54:20,861 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:54:20,862 INFO  L82        PathProgramCache]: Analyzing trace with hash 1048773910, now seen corresponding path program 1 times
[2020-10-28 10:54:20,862 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:54:20,862 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380856808]
[2020-10-28 10:54:20,863 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:54:20,983 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:54:21,007 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:54:21,075 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:54:21,587 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:54:26,040 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:54:26,040 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1795
[2020-10-28 10:54:26,041 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-28 10:54:26,041 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5053
[2020-10-28 10:54:26,041 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:54:26,041 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:54:26,041 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:54:26,041 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 22
[2020-10-28 10:54:26,042 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 59
[2020-10-28 10:54:26,042 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:54:26,445 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:54:26,447 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:54:26,449 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:54:26,454 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:54:26,454 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:54:26,454 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:54:26,454 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-10-28 10:54:26,454 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:54:26,455 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:54:26,455 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-28 10:54:26,455 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:54:26,455 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-28 10:54:26,455 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:54:26,478 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-28 10:54:26,481 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:54:26,483 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:54:26,492 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:54:26,492 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-10-28 10:54:26,493 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:54:26,493 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-10-28 10:54:26,493 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:54:26,493 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:54:26,493 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:54:26,493 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:54:26,494 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-10-28 10:54:26,494 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:54:26,498 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20
[2020-10-28 10:54:26,514 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:54:26,524 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:54:26,628 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:54:26,629 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 57
[2020-10-28 10:54:26,629 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:54:26,629 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 113
[2020-10-28 10:54:26,629 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:54:26,629 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:54:26,629 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:54:26,629 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-28 10:54:26,630 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 57
[2020-10-28 10:54:26,630 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:54:27,994 INFO  L134       CoverageAnalysis]: Checked inductivity of 74 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-28 10:54:27,995 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380856808]
[2020-10-28 10:54:27,995 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-28 10:54:27,995 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-28 10:54:27,995 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780191991]
[2020-10-28 10:54:27,997 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-28 10:54:27,997 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:54:27,998 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-28 10:54:27,998 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-28 10:54:27,998 INFO  L87              Difference]: Start difference. First operand 33207 states and 48514 transitions. Second operand 7 states.
[2020-10-28 10:54:57,470 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-28 10:54:57,470 INFO  L93              Difference]: Finished difference Result 97867 states and 170440 transitions.
[2020-10-28 10:54:57,471 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-28 10:54:57,471 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1767
[2020-10-28 10:54:57,472 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-28 10:54:57,857 INFO  L225             Difference]: With dead ends: 97867
[2020-10-28 10:54:57,858 INFO  L226             Difference]: Without dead ends: 64666
[2020-10-28 10:54:57,958 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132
[2020-10-28 10:54:58,022 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 64666 states.
[2020-10-28 10:55:00,230 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 64666 to 63545.
[2020-10-28 10:55:00,231 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 63545 states.
[2020-10-28 10:55:00,427 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 63545 states to 63545 states and 91767 transitions.
[2020-10-28 10:55:00,429 INFO  L78                 Accepts]: Start accepts. Automaton has 63545 states and 91767 transitions. Word has length 1767
[2020-10-28 10:55:00,430 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-28 10:55:00,430 INFO  L481      AbstractCegarLoop]: Abstraction has 63545 states and 91767 transitions.
[2020-10-28 10:55:00,430 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-28 10:55:00,430 INFO  L276                IsEmpty]: Start isEmpty. Operand 63545 states and 91767 transitions.
[2020-10-28 10:55:00,606 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1807
[2020-10-28 10:55:00,606 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:55:00,608 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2020-10-28 10:55:00,608 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-28 10:55:00,608 INFO  L429      AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:55:00,609 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:55:00,609 INFO  L82        PathProgramCache]: Analyzing trace with hash -1467232577, now seen corresponding path program 1 times
[2020-10-28 10:55:00,610 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:55:00,610 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423496686]
[2020-10-28 10:55:00,610 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:55:00,723 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:55:00,753 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:55:00,847 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:55:02,103 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:55:05,924 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:55:05,924 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1834
[2020-10-28 10:55:05,925 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-28 10:55:05,925 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5197
[2020-10-28 10:55:05,925 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:55:05,925 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:55:05,925 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:55:05,925 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 61
[2020-10-28 10:55:05,926 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 59
[2020-10-28 10:55:05,926 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:55:06,442 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:55:06,446 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:55:06,448 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:55:06,452 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:55:06,452 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:55:06,452 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:55:06,453 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-10-28 10:55:06,453 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:55:06,453 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:55:06,453 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-28 10:55:06,453 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:55:06,454 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-28 10:55:06,454 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:55:06,485 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-28 10:55:06,499 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:55:06,509 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:55:06,559 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:55:06,559 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 52
[2020-10-28 10:55:06,560 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:55:06,560 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 59
[2020-10-28 10:55:06,560 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:55:06,560 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:55:06,560 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:55:06,560 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:55:06,561 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 46
[2020-10-28 10:55:06,561 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:55:06,579 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59
[2020-10-28 10:55:06,595 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:55:06,605 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:55:06,729 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:55:06,730 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 57
[2020-10-28 10:55:06,730 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:55:06,730 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 134
[2020-10-28 10:55:06,730 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:55:06,730 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:55:06,731 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:55:06,731 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-28 10:55:06,731 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 57
[2020-10-28 10:55:06,731 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:55:08,172 INFO  L134       CoverageAnalysis]: Checked inductivity of 152 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-28 10:55:08,173 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423496686]
[2020-10-28 10:55:08,173 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-28 10:55:08,173 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-28 10:55:08,173 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254428248]
[2020-10-28 10:55:08,175 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-28 10:55:08,175 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:55:08,176 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-28 10:55:08,176 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-28 10:55:08,176 INFO  L87              Difference]: Start difference. First operand 63545 states and 91767 transitions. Second operand 7 states.