/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_label46.c


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


This is Ultimate 0.2.0-0f64333
[2020-10-28 10:50:20,954 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-28 10:50:20,957 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-28 10:50:21,009 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-28 10:50:21,010 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-28 10:50:21,012 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-28 10:50:21,013 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-28 10:50:21,016 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-28 10:50:21,018 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-28 10:50:21,019 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-28 10:50:21,021 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-28 10:50:21,022 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-28 10:50:21,022 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-28 10:50:21,024 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-28 10:50:21,025 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-28 10:50:21,027 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-28 10:50:21,028 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-28 10:50:21,031 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-28 10:50:21,034 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-28 10:50:21,036 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-28 10:50:21,038 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-28 10:50:21,040 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-28 10:50:21,041 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-28 10:50:21,042 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-28 10:50:21,045 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-28 10:50:21,046 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-28 10:50:21,046 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-28 10:50:21,047 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-28 10:50:21,048 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-28 10:50:21,049 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-28 10:50:21,049 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-28 10:50:21,050 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-28 10:50:21,051 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-28 10:50:21,052 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-28 10:50:21,054 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-28 10:50:21,066 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-28 10:50:21,067 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-28 10:50:21,069 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-28 10:50:21,072 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-28 10:50:21,073 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-28 10:50:21,074 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-28 10:50:21,075 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 10:50:21,102 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-28 10:50:21,102 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-28 10:50:21,104 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-28 10:50:21,104 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-28 10:50:21,105 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-28 10:50:21,105 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-28 10:50:21,105 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-28 10:50:21,106 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-28 10:50:21,106 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-28 10:50:21,106 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-28 10:50:21,106 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-28 10:50:21,107 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-28 10:50:21,107 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-28 10:50:21,107 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-28 10:50:21,108 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-28 10:50:21,108 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-28 10:50:21,108 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-28 10:50:21,108 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-28 10:50:21,109 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-28 10:50:21,109 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-28 10:50:21,109 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-28 10:50:21,109 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-28 10:50:21,110 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-28 10:50:21,110 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-28 10:50:21,110 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-28 10:50:21,110 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-28 10:50:21,111 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-28 10:50:21,111 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-28 10:50:21,111 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-28 10:50:21,111 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true;
[2020-10-28 10:50:21,545 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-28 10:50:21,577 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-28 10:50:21,581 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-28 10:50:21,582 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-28 10:50:21,583 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-28 10:50:21,585 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label46.c
[2020-10-28 10:50:21,681 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b15f23d9/39a1a06ca6ed4a268d5e982ce001768a/FLAG52c6c2e8f
[2020-10-28 10:50:22,926 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-28 10:50:22,926 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label46.c
[2020-10-28 10:50:22,983 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b15f23d9/39a1a06ca6ed4a268d5e982ce001768a/FLAG52c6c2e8f
[2020-10-28 10:50:23,235 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b15f23d9/39a1a06ca6ed4a268d5e982ce001768a
[2020-10-28 10:50:23,238 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-28 10:50:23,245 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-28 10:50:23,246 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-28 10:50:23,247 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-28 10:50:23,254 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-28 10:50:23,255 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:50:23" (1/1) ...
[2020-10-28 10:50:23,258 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7eb84adb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:23, skipping insertion in model container
[2020-10-28 10:50:23,259 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:50:23" (1/1) ...
[2020-10-28 10:50:23,267 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-28 10:50:23,495 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-28 10:50:25,773 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-28 10:50:25,785 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-28 10:50:26,958 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-28 10:50:27,069 INFO  L208         MainTranslator]: Completed translation
[2020-10-28 10:50:27,070 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:27 WrapperNode
[2020-10-28 10:50:27,071 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-28 10:50:27,072 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-28 10:50:27,072 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-28 10:50:27,072 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-28 10:50:27,089 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:27" (1/1) ...
[2020-10-28 10:50:27,091 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:27" (1/1) ...
[2020-10-28 10:50:27,219 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:27" (1/1) ...
[2020-10-28 10:50:27,220 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:27" (1/1) ...
[2020-10-28 10:50:27,456 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:27" (1/1) ...
[2020-10-28 10:50:27,582 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:27" (1/1) ...
[2020-10-28 10:50:27,626 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:27" (1/1) ...
[2020-10-28 10:50:27,683 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-28 10:50:27,684 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-28 10:50:27,684 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-28 10:50:27,685 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-28 10:50:27,686 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:27" (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 10:50:27,763 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-28 10:50:27,764 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-28 10:50:27,764 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2020-10-28 10:50:27,764 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-28 10:50:27,764 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-28 10:50:27,764 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-28 10:50:27,765 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-28 10:50:27,765 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-28 10:50:27,765 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-28 10:50:27,765 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-28 10:50:27,765 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-28 10:50:27,765 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-28 10:50:27,766 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-28 10:50:27,766 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-28 10:50:27,766 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-28 10:50:27,766 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-28 10:50:27,766 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-28 10:50:27,766 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-28 10:50:27,767 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-28 10:50:27,767 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-28 10:50:27,767 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-10-28 10:50:27,767 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-28 10:50:27,767 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2020-10-28 10:50:27,767 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-28 10:50:27,767 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-28 10:50:27,768 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-28 10:50:27,768 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-28 10:50:27,768 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-28 10:50:27,768 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-28 10:50:27,768 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-28 10:50:27,768 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-10-28 10:50:27,768 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-10-28 10:50:27,769 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-28 10:50:38,143 INFO  L293             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-28 10:50:38,144 INFO  L298             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-28 10:50:38,150 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:50:38 BoogieIcfgContainer
[2020-10-28 10:50:38,150 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-28 10:50:38,155 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-28 10:50:38,155 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-28 10:50:38,159 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-28 10:50:38,160 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:50:23" (1/3) ...
[2020-10-28 10:50:38,161 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d72d5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:50:38, skipping insertion in model container
[2020-10-28 10:50:38,161 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:27" (2/3) ...
[2020-10-28 10:50:38,161 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d72d5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:50:38, skipping insertion in model container
[2020-10-28 10:50:38,161 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:50:38" (3/3) ...
[2020-10-28 10:50:38,163 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem05_label46.c
[2020-10-28 10:50:38,176 INFO  L164   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-28 10:50:38,183 INFO  L176   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-28 10:50:38,200 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-28 10:50:38,257 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2020-10-28 10:50:38,258 INFO  L378      AbstractCegarLoop]: Hoare is true
[2020-10-28 10:50:38,258 INFO  L379      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-28 10:50:38,258 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-28 10:50:38,258 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-28 10:50:38,258 INFO  L382      AbstractCegarLoop]: Difference is false
[2020-10-28 10:50:38,258 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-28 10:50:38,258 INFO  L387      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-28 10:50:38,330 INFO  L276                IsEmpty]: Start isEmpty. Operand 2226 states.
[2020-10-28 10:50:38,482 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1712
[2020-10-28 10:50:38,482 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:50:38,485 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:50:38,486 INFO  L429      AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:50:38,494 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:50:38,496 INFO  L82        PathProgramCache]: Analyzing trace with hash -1857665487, now seen corresponding path program 1 times
[2020-10-28 10:50:38,506 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:50:38,506 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936684360]
[2020-10-28 10:50:38,508 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:50:39,807 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:50:40,297 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:50:45,040 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:50:45,040 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1735
[2020-10-28 10:50:45,040 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:50:45,041 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5222
[2020-10-28 10:50:45,043 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:50:45,043 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:50:45,043 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-28 10:50:45,044 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-28 10:50:45,044 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1726
[2020-10-28 10:50:45,044 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-28 10:50:46,789 WARN  L193               SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 73
[2020-10-28 10:50:46,791 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:50:46,803 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:50:46,821 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:50:46,837 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:50:46,839 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:50:46,839 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:50:46,839 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 34
[2020-10-28 10:50:46,840 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:50:46,840 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:50:46,840 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:50:46,841 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:50:46,841 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-28 10:50:46,841 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:50:49,665 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 10:50:49,665 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936684360]
[2020-10-28 10:50:49,668 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-28 10:50:49,668 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-10-28 10:50:49,669 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54777120]
[2020-10-28 10:50:49,680 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-28 10:50:49,681 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:50:49,696 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-28 10:50:49,696 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-28 10:50:49,698 INFO  L87              Difference]: Start difference. First operand 2226 states. Second operand 5 states.
[2020-10-28 10:50:49,906 WARN  L193               SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 75
[2020-10-28 10:51:15,229 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-28 10:51:15,229 INFO  L93              Difference]: Finished difference Result 6315 states and 11856 transitions.
[2020-10-28 10:51:15,230 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-28 10:51:15,232 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 1711
[2020-10-28 10:51:15,245 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-28 10:51:15,303 INFO  L225             Difference]: With dead ends: 6315
[2020-10-28 10:51:15,303 INFO  L226             Difference]: Without dead ends: 4025
[2020-10-28 10:51:15,321 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2020-10-28 10:51:15,353 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4025 states.
[2020-10-28 10:51:15,553 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4025 to 3998.
[2020-10-28 10:51:15,554 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3998 states.
[2020-10-28 10:51:15,579 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3998 states to 3998 states and 6428 transitions.
[2020-10-28 10:51:15,581 INFO  L78                 Accepts]: Start accepts. Automaton has 3998 states and 6428 transitions. Word has length 1711
[2020-10-28 10:51:15,587 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-28 10:51:15,587 INFO  L481      AbstractCegarLoop]: Abstraction has 3998 states and 6428 transitions.
[2020-10-28 10:51:15,588 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-28 10:51:15,588 INFO  L276                IsEmpty]: Start isEmpty. Operand 3998 states and 6428 transitions.
[2020-10-28 10:51:15,735 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1721
[2020-10-28 10:51:15,736 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:51:15,737 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:51:15,738 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-28 10:51:15,738 INFO  L429      AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:51:15,739 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:51:15,739 INFO  L82        PathProgramCache]: Analyzing trace with hash 695879861, now seen corresponding path program 1 times
[2020-10-28 10:51:15,740 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:51:15,740 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137596805]
[2020-10-28 10:51:15,741 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:51:15,918 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:51:15,952 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:51:18,221 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:51:21,076 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:51:21,077 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1746
[2020-10-28 10:51:21,077 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-28 10:51:21,077 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5151
[2020-10-28 10:51:21,078 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:51:21,078 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:51:21,078 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-28 10:51:21,078 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-28 10:51:21,079 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 15
[2020-10-28 10:51:21,079 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:51:22,189 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:51:22,196 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:51:22,199 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:51:22,212 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:51:22,213 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:51:22,213 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:51:22,213 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 16
[2020-10-28 10:51:22,213 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:51:22,214 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:51:22,214 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:51:22,214 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:51:22,214 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-28 10:51:22,214 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:51:22,238 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-28 10:51:22,243 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:51:22,245 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:51:22,265 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:51:22,265 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-28 10:51:22,265 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:51:22,266 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 21
[2020-10-28 10:51:22,266 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:51:22,266 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:51:22,266 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:51:22,266 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-28 10:51:22,266 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-10-28 10:51:22,267 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:51:23,570 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-28 10:51:23,570 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137596805]
[2020-10-28 10:51:23,571 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-28 10:51:23,571 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-28 10:51:23,571 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492646254]
[2020-10-28 10:51:23,575 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-28 10:51:23,576 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:51:23,577 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-28 10:51:23,577 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-28 10:51:23,577 INFO  L87              Difference]: Start difference. First operand 3998 states and 6428 transitions. Second operand 7 states.
[2020-10-28 10:51:56,122 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-28 10:51:56,122 INFO  L93              Difference]: Finished difference Result 11930 states and 19289 transitions.
[2020-10-28 10:51:56,124 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-28 10:51:56,124 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1720
[2020-10-28 10:51:56,124 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-28 10:51:56,174 INFO  L225             Difference]: With dead ends: 11930
[2020-10-28 10:51:56,174 INFO  L226             Difference]: Without dead ends: 7938
[2020-10-28 10:51:56,188 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 10:51:56,199 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7938 states.
[2020-10-28 10:51:56,437 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7938 to 7745.
[2020-10-28 10:51:56,437 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 7745 states.
[2020-10-28 10:51:56,472 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7745 states to 7745 states and 11187 transitions.
[2020-10-28 10:51:56,473 INFO  L78                 Accepts]: Start accepts. Automaton has 7745 states and 11187 transitions. Word has length 1720
[2020-10-28 10:51:56,473 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-28 10:51:56,474 INFO  L481      AbstractCegarLoop]: Abstraction has 7745 states and 11187 transitions.
[2020-10-28 10:51:56,474 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-28 10:51:56,474 INFO  L276                IsEmpty]: Start isEmpty. Operand 7745 states and 11187 transitions.
[2020-10-28 10:51:56,525 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1723
[2020-10-28 10:51:56,526 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:51:56,527 INFO  L422         BasicCegarLoop]: trace histogram [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, 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]
[2020-10-28 10:51:56,527 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-28 10:51:56,528 INFO  L429      AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:51:56,529 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:51:56,530 INFO  L82        PathProgramCache]: Analyzing trace with hash -418151879, now seen corresponding path program 1 times
[2020-10-28 10:51:56,530 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:51:56,532 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794927108]
[2020-10-28 10:51:56,533 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:51:56,900 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:51:57,096 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:51:57,665 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:52:01,941 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:52:01,941 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1748
[2020-10-28 10:52:01,941 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-28 10:52:01,942 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5037
[2020-10-28 10:52:01,942 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:52:01,942 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:52:01,942 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-28 10:52:01,942 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-28 10:52:01,942 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 17
[2020-10-28 10:52:01,943 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:52:02,630 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:52:02,637 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:52:02,641 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:52:02,653 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:52:02,653 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:52:02,653 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:52:02,654 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 14
[2020-10-28 10:52:02,654 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:52:02,654 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:52:02,654 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:52:02,654 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:52:02,655 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-28 10:52:02,655 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:52:02,684 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-28 10:52:02,690 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:52:02,692 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:52:02,713 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:52:02,714 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-10-28 10:52:02,714 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:52:02,714 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 23
[2020-10-28 10:52:02,714 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:52:02,714 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:52:02,715 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:52:02,715 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-28 10:52:02,715 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 12
[2020-10-28 10:52:02,715 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:52:04,737 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-28 10:52:04,737 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794927108]
[2020-10-28 10:52:04,737 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-28 10:52:04,737 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-28 10:52:04,738 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778610051]
[2020-10-28 10:52:04,739 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-28 10:52:04,739 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:52:04,740 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-28 10:52:04,740 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2020-10-28 10:52:04,740 INFO  L87              Difference]: Start difference. First operand 7745 states and 11187 transitions. Second operand 7 states.
[2020-10-28 10:52:34,848 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-28 10:52:34,849 INFO  L93              Difference]: Finished difference Result 23185 states and 34120 transitions.
[2020-10-28 10:52:34,850 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-10-28 10:52:34,850 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1722
[2020-10-28 10:52:34,850 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-28 10:52:34,946 INFO  L225             Difference]: With dead ends: 23185
[2020-10-28 10:52:34,947 INFO  L226             Difference]: Without dead ends: 15446
[2020-10-28 10:52:34,970 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 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 10:52:34,989 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15446 states.
[2020-10-28 10:52:35,388 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15446 to 15252.
[2020-10-28 10:52:35,388 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 15252 states.
[2020-10-28 10:52:35,427 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15252 states to 15252 states and 20616 transitions.
[2020-10-28 10:52:35,429 INFO  L78                 Accepts]: Start accepts. Automaton has 15252 states and 20616 transitions. Word has length 1722
[2020-10-28 10:52:35,429 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-28 10:52:35,430 INFO  L481      AbstractCegarLoop]: Abstraction has 15252 states and 20616 transitions.
[2020-10-28 10:52:35,436 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-28 10:52:35,436 INFO  L276                IsEmpty]: Start isEmpty. Operand 15252 states and 20616 transitions.
[2020-10-28 10:52:35,591 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1734
[2020-10-28 10:52:35,591 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:52:35,593 INFO  L422         BasicCegarLoop]: trace histogram [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, 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]
[2020-10-28 10:52:35,594 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-28 10:52:35,594 INFO  L429      AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:52:35,594 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:52:35,595 INFO  L82        PathProgramCache]: Analyzing trace with hash -278694512, now seen corresponding path program 1 times
[2020-10-28 10:52:35,596 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:52:35,597 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446177988]
[2020-10-28 10:52:35,597 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:52:35,988 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:52:36,200 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:52:36,744 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:52:38,462 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:52:41,087 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:52:41,087 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1759
[2020-10-28 10:52:41,087 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-28 10:52:41,087 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5095
[2020-10-28 10:52:41,087 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:52:41,088 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:52:41,088 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-28 10:52:41,088 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-28 10:52:41,088 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 28
[2020-10-28 10:52:41,088 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:52:41,611 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:52:41,617 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:52:41,621 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:52:41,632 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:52:41,632 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:52:41,632 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:52:41,632 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 14
[2020-10-28 10:52:41,633 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:52:41,633 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:52:41,633 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:52:41,633 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:52:41,633 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-28 10:52:41,633 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:52:41,660 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-28 10:52:41,668 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:52:41,674 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:52:41,718 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:52:41,719 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-10-28 10:52:41,719 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:52:41,719 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 50
[2020-10-28 10:52:41,719 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:52:41,719 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:52:41,719 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:52:41,720 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-28 10:52:41,720 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 23
[2020-10-28 10:52:41,720 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:52:43,194 INFO  L134       CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-28 10:52:43,194 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446177988]
[2020-10-28 10:52:43,194 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-28 10:52:43,194 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-28 10:52:43,195 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180832814]
[2020-10-28 10:52:43,197 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-28 10:52:43,197 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:52:43,198 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-28 10:52:43,198 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-28 10:52:43,198 INFO  L87              Difference]: Start difference. First operand 15252 states and 20616 transitions. Second operand 7 states.
[2020-10-28 10:53:15,001 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-28 10:53:15,001 INFO  L93              Difference]: Finished difference Result 39474 states and 55189 transitions.
[2020-10-28 10:53:15,005 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-10-28 10:53:15,005 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1733
[2020-10-28 10:53:15,005 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-28 10:53:15,111 INFO  L225             Difference]: With dead ends: 39474
[2020-10-28 10:53:15,111 INFO  L226             Difference]: Without dead ends: 24228
[2020-10-28 10:53:15,149 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156
[2020-10-28 10:53:15,180 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 24228 states.
[2020-10-28 10:53:15,811 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 24228 to 23186.
[2020-10-28 10:53:15,812 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 23186 states.
[2020-10-28 10:53:15,873 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 23186 states to 23186 states and 29824 transitions.
[2020-10-28 10:53:15,874 INFO  L78                 Accepts]: Start accepts. Automaton has 23186 states and 29824 transitions. Word has length 1733
[2020-10-28 10:53:15,874 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-28 10:53:15,874 INFO  L481      AbstractCegarLoop]: Abstraction has 23186 states and 29824 transitions.
[2020-10-28 10:53:15,874 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-28 10:53:15,875 INFO  L276                IsEmpty]: Start isEmpty. Operand 23186 states and 29824 transitions.
[2020-10-28 10:53:15,977 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1840
[2020-10-28 10:53:15,977 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:53:15,979 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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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]
[2020-10-28 10:53:15,979 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-28 10:53:15,980 INFO  L429      AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:53:15,980 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:53:15,981 INFO  L82        PathProgramCache]: Analyzing trace with hash 2131702213, now seen corresponding path program 1 times
[2020-10-28 10:53:15,981 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:53:15,981 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641365013]
[2020-10-28 10:53:15,982 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:53:16,169 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:53:16,239 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:53:17,443 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:53:20,836 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:53:21,532 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:53:21,532 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1867
[2020-10-28 10:53:21,532 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-28 10:53:21,533 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5354
[2020-10-28 10:53:21,533 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:53:21,533 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:53:21,533 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:53:21,533 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 123
[2020-10-28 10:53:21,533 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 16
[2020-10-28 10:53:21,534 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:53:22,226 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:53:22,230 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:53:22,231 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:53:22,236 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:53:22,236 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:53:22,237 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:53:22,237 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-10-28 10:53:22,237 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:53:22,237 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:53:22,237 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-28 10:53:22,237 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:53:22,238 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-28 10:53:22,238 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:53:22,264 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-28 10:53:22,291 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:53:22,312 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:53:22,410 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:53:22,411 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 114
[2020-10-28 10:53:22,411 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:53:22,411 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 118
[2020-10-28 10:53:22,411 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:53:22,411 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:53:22,411 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:53:22,412 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:53:22,412 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 108
[2020-10-28 10:53:22,412 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:53:22,455 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2020-10-28 10:53:22,460 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:53:22,464 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:53:22,489 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:53:22,490 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 16
[2020-10-28 10:53:22,490 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:53:22,490 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 28
[2020-10-28 10:53:22,490 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:53:22,490 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:53:22,490 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:53:22,491 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-28 10:53:22,491 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 16
[2020-10-28 10:53:22,491 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:53:24,058 INFO  L134       CoverageAnalysis]: Checked inductivity of 133 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-28 10:53:24,058 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641365013]
[2020-10-28 10:53:24,058 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-28 10:53:24,058 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-28 10:53:24,059 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314534695]
[2020-10-28 10:53:24,060 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-28 10:53:24,060 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:53:24,061 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-28 10:53:24,061 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2020-10-28 10:53:24,061 INFO  L87              Difference]: Start difference. First operand 23186 states and 29824 transitions. Second operand 7 states.
[2020-10-28 10:53:51,514 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-28 10:53:51,514 INFO  L93              Difference]: Finished difference Result 57487 states and 74201 transitions.
[2020-10-28 10:53:51,515 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-10-28 10:53:51,515 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1839
[2020-10-28 10:53:51,516 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-28 10:53:51,620 INFO  L225             Difference]: With dead ends: 57487
[2020-10-28 10:53:51,620 INFO  L226             Difference]: Without dead ends: 34307
[2020-10-28 10:53:51,676 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 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 10:53:51,713 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 34307 states.
[2020-10-28 10:53:52,311 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 34307 to 34151.
[2020-10-28 10:53:52,311 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34151 states.
[2020-10-28 10:53:52,381 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34151 states to 34151 states and 40769 transitions.
[2020-10-28 10:53:52,383 INFO  L78                 Accepts]: Start accepts. Automaton has 34151 states and 40769 transitions. Word has length 1839
[2020-10-28 10:53:52,384 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-28 10:53:52,384 INFO  L481      AbstractCegarLoop]: Abstraction has 34151 states and 40769 transitions.
[2020-10-28 10:53:52,384 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-28 10:53:52,384 INFO  L276                IsEmpty]: Start isEmpty. Operand 34151 states and 40769 transitions.
[2020-10-28 10:53:52,459 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1843
[2020-10-28 10:53:52,460 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:53:52,461 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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[2020-10-28 10:53:52,461 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-10-28 10:53:52,461 INFO  L429      AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:53:52,462 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:53:52,463 INFO  L82        PathProgramCache]: Analyzing trace with hash 942634114, now seen corresponding path program 1 times
[2020-10-28 10:53:52,463 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:53:52,463 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210628781]
[2020-10-28 10:53:52,463 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:53:52,623 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:53:52,689 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:53:52,844 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:53:57,518 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:53:57,746 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:53:57,746 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1870
[2020-10-28 10:53:57,746 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-28 10:53:57,746 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5117
[2020-10-28 10:53:57,747 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:53:57,747 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:53:57,747 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:53:57,747 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 123
[2020-10-28 10:53:57,747 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 21
[2020-10-28 10:53:57,747 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:53:58,107 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:53:58,110 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:53:58,111 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:53:58,115 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:53:58,115 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:53:58,115 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:53:58,115 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-10-28 10:53:58,115 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:53:58,115 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:53:58,116 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-28 10:53:58,116 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:53:58,116 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-28 10:53:58,116 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:53:58,144 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-28 10:53:58,171 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:53:58,190 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:53:58,277 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:53:58,277 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 114
[2020-10-28 10:53:58,277 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:53:58,277 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 105
[2020-10-28 10:53:58,277 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:53:58,278 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:53:58,278 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:53:58,278 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:53:58,278 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 108
[2020-10-28 10:53:58,278 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:53:58,311 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2020-10-28 10:53:58,315 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:53:58,318 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:53:58,336 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:53:58,336 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 19
[2020-10-28 10:53:58,336 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:53:58,336 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 20
[2020-10-28 10:53:58,336 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:53:58,337 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:53:58,337 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:53:58,337 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-28 10:53:58,337 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 19
[2020-10-28 10:53:58,337 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:53:59,718 INFO  L134       CoverageAnalysis]: Checked inductivity of 143 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-28 10:53:59,719 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210628781]
[2020-10-28 10:53:59,719 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-28 10:53:59,719 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-28 10:53:59,719 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64604032]
[2020-10-28 10:53:59,721 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-28 10:53:59,721 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:53:59,722 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-28 10:53:59,722 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-28 10:53:59,722 INFO  L87              Difference]: Start difference. First operand 34151 states and 40769 transitions. Second operand 7 states.