/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_label18.c


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


This is Ultimate 0.2.0-0f64333
[2020-10-28 10:42:49,578 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-28 10:42:49,581 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-28 10:42:49,618 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-28 10:42:49,619 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-28 10:42:49,621 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-28 10:42:49,622 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-28 10:42:49,625 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-28 10:42:49,627 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-28 10:42:49,628 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-28 10:42:49,630 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-28 10:42:49,631 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-28 10:42:49,632 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-28 10:42:49,633 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-28 10:42:49,634 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-28 10:42:49,636 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-28 10:42:49,637 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-28 10:42:49,638 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-28 10:42:49,652 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-28 10:42:49,658 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-28 10:42:49,663 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-28 10:42:49,665 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-28 10:42:49,666 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-28 10:42:49,669 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-28 10:42:49,679 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-28 10:42:49,679 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-28 10:42:49,680 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-28 10:42:49,684 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-28 10:42:49,685 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-28 10:42:49,687 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-28 10:42:49,687 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-28 10:42:49,688 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-28 10:42:49,690 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-28 10:42:49,691 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-28 10:42:49,692 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-28 10:42:49,693 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-28 10:42:49,693 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-28 10:42:49,694 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-28 10:42:49,694 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-28 10:42:49,695 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-28 10:42:49,696 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-28 10:42:49,697 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 10:42:49,751 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-28 10:42:49,752 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-28 10:42:49,756 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-28 10:42:49,757 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-28 10:42:49,757 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-28 10:42:49,757 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-28 10:42:49,758 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-28 10:42:49,758 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-28 10:42:49,758 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-28 10:42:49,758 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-28 10:42:49,760 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-28 10:42:49,760 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-28 10:42:49,760 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-28 10:42:49,760 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-28 10:42:49,760 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-28 10:42:49,761 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-28 10:42:49,761 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-28 10:42:49,761 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-28 10:42:49,761 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-28 10:42:49,762 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-28 10:42:49,762 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-28 10:42:49,762 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-28 10:42:49,762 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-28 10:42:49,762 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-28 10:42:49,763 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-28 10:42:49,763 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-28 10:42:49,763 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-28 10:42:49,763 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-28 10:42:49,763 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-28 10:42:49,764 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true;
[2020-10-28 10:42:50,195 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-28 10:42:50,221 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-28 10:42:50,224 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-28 10:42:50,226 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-28 10:42:50,227 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-28 10:42:50,228 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label18.c
[2020-10-28 10:42:50,316 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30aedfc9b/8aee31abf97a40c8988dcf5ffee659f1/FLAGd4d9c5f6c
[2020-10-28 10:42:51,629 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-28 10:42:51,630 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label18.c
[2020-10-28 10:42:51,679 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30aedfc9b/8aee31abf97a40c8988dcf5ffee659f1/FLAGd4d9c5f6c
[2020-10-28 10:42:51,828 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30aedfc9b/8aee31abf97a40c8988dcf5ffee659f1
[2020-10-28 10:42:51,832 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-28 10:42:51,840 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-28 10:42:51,844 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-28 10:42:51,844 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-28 10:42:51,848 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-28 10:42:51,849 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:42:51" (1/1) ...
[2020-10-28 10:42:51,854 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f592cd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:42:51, skipping insertion in model container
[2020-10-28 10:42:51,854 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:42:51" (1/1) ...
[2020-10-28 10:42:51,863 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-28 10:42:52,087 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-28 10:42:54,565 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-28 10:42:54,583 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-28 10:42:55,773 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-28 10:42:55,855 INFO  L208         MainTranslator]: Completed translation
[2020-10-28 10:42:55,857 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:42:55 WrapperNode
[2020-10-28 10:42:55,857 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-28 10:42:55,859 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-28 10:42:55,859 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-28 10:42:55,859 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-28 10:42:55,875 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:42:55" (1/1) ...
[2020-10-28 10:42:55,877 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:42:55" (1/1) ...
[2020-10-28 10:42:55,989 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:42:55" (1/1) ...
[2020-10-28 10:42:55,990 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:42:55" (1/1) ...
[2020-10-28 10:42:56,285 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:42:55" (1/1) ...
[2020-10-28 10:42:56,348 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:42:55" (1/1) ...
[2020-10-28 10:42:56,512 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:42:55" (1/1) ...
[2020-10-28 10:42:56,601 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-28 10:42:56,603 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-28 10:42:56,603 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-28 10:42:56,603 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-28 10:42:56,604 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:42:55" (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 10:42:56,694 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-28 10:42:56,694 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-28 10:42:56,695 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2020-10-28 10:42:56,695 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-28 10:42:56,695 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-28 10:42:56,695 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-28 10:42:56,696 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-28 10:42:56,696 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-28 10:42:56,696 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-28 10:42:56,696 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-28 10:42:56,697 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-28 10:42:56,697 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-28 10:42:56,697 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-28 10:42:56,697 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-28 10:42:56,698 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-28 10:42:56,698 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-28 10:42:56,699 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-28 10:42:56,699 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-28 10:42:56,699 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-28 10:42:56,699 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-28 10:42:56,700 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-10-28 10:42:56,700 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-28 10:42:56,700 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2020-10-28 10:42:56,700 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-28 10:42:56,700 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-28 10:42:56,701 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-28 10:42:56,701 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-28 10:42:56,701 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-28 10:42:56,701 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-28 10:42:56,701 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-28 10:42:56,701 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-10-28 10:42:56,701 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-10-28 10:42:56,701 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-28 10:43:06,952 INFO  L293             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-28 10:43:06,953 INFO  L298             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-28 10:43:06,958 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:43:06 BoogieIcfgContainer
[2020-10-28 10:43:06,958 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-28 10:43:06,960 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-28 10:43:06,961 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-28 10:43:06,965 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-28 10:43:06,965 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:42:51" (1/3) ...
[2020-10-28 10:43:06,966 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79b2d62c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:43:06, skipping insertion in model container
[2020-10-28 10:43:06,966 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:42:55" (2/3) ...
[2020-10-28 10:43:06,967 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79b2d62c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:43:06, skipping insertion in model container
[2020-10-28 10:43:06,967 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:43:06" (3/3) ...
[2020-10-28 10:43:06,968 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem05_label18.c
[2020-10-28 10:43:06,980 INFO  L164   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-28 10:43:06,987 INFO  L176   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-28 10:43:07,001 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-28 10:43:07,040 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2020-10-28 10:43:07,041 INFO  L378      AbstractCegarLoop]: Hoare is true
[2020-10-28 10:43:07,041 INFO  L379      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-28 10:43:07,041 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-28 10:43:07,041 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-28 10:43:07,041 INFO  L382      AbstractCegarLoop]: Difference is false
[2020-10-28 10:43:07,042 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-28 10:43:07,042 INFO  L387      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-28 10:43:07,096 INFO  L276                IsEmpty]: Start isEmpty. Operand 2226 states.
[2020-10-28 10:43:07,232 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1664
[2020-10-28 10:43:07,233 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:43:07,236 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]
[2020-10-28 10:43:07,236 INFO  L429      AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:43:07,243 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:43:07,245 INFO  L82        PathProgramCache]: Analyzing trace with hash -1182010511, now seen corresponding path program 1 times
[2020-10-28 10:43:07,255 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:43:07,255 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37454789]
[2020-10-28 10:43:07,256 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:43:08,319 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:43:08,864 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:43:13,473 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:43:13,474 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1687
[2020-10-28 10:43:13,474 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:43:13,475 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5142
[2020-10-28 10:43:13,477 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:43:13,477 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:43:13,478 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-28 10:43:13,478 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-28 10:43:13,478 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1678
[2020-10-28 10:43:13,478 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-28 10:43:15,685 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:43:15,697 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:43:15,702 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:43:15,719 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:43:15,719 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:43:15,719 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:43:15,719 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 21
[2020-10-28 10:43:15,720 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:43:15,720 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:43:15,720 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:43:15,720 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:43:15,721 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-28 10:43:15,721 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:43:18,752 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 10:43:18,752 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37454789]
[2020-10-28 10:43:18,754 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-28 10:43:18,755 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-10-28 10:43:18,755 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170692158]
[2020-10-28 10:43:18,764 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-28 10:43:18,764 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:43:18,778 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-28 10:43:18,779 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-28 10:43:18,781 INFO  L87              Difference]: Start difference. First operand 2226 states. Second operand 5 states.
[2020-10-28 10:43:54,253 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-28 10:43:54,254 INFO  L93              Difference]: Finished difference Result 8239 states and 15621 transitions.
[2020-10-28 10:43:54,255 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-10-28 10:43:54,256 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 1663
[2020-10-28 10:43:54,271 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-28 10:43:54,329 INFO  L225             Difference]: With dead ends: 8239
[2020-10-28 10:43:54,329 INFO  L226             Difference]: Without dead ends: 5945
[2020-10-28 10:43:54,343 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2020-10-28 10:43:54,372 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5945 states.
[2020-10-28 10:43:54,610 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5945 to 5826.
[2020-10-28 10:43:54,611 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5826 states.
[2020-10-28 10:43:54,644 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5826 states to 5826 states and 10165 transitions.
[2020-10-28 10:43:54,646 INFO  L78                 Accepts]: Start accepts. Automaton has 5826 states and 10165 transitions. Word has length 1663
[2020-10-28 10:43:54,651 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-28 10:43:54,651 INFO  L481      AbstractCegarLoop]: Abstraction has 5826 states and 10165 transitions.
[2020-10-28 10:43:54,651 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-28 10:43:54,652 INFO  L276                IsEmpty]: Start isEmpty. Operand 5826 states and 10165 transitions.
[2020-10-28 10:43:54,798 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1690
[2020-10-28 10:43:54,798 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:43:54,800 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2020-10-28 10:43:54,800 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-28 10:43:54,802 INFO  L429      AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:43:54,803 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:43:54,804 INFO  L82        PathProgramCache]: Analyzing trace with hash 1364104726, now seen corresponding path program 1 times
[2020-10-28 10:43:54,804 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:43:54,804 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367881551]
[2020-10-28 10:43:54,805 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:43:54,970 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:43:55,010 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:43:55,414 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:44:00,125 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:44:00,125 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1715
[2020-10-28 10:44:00,125 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-28 10:44:00,126 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5150
[2020-10-28 10:44:00,127 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:44:00,128 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:44:00,128 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-28 10:44:00,129 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-28 10:44:00,129 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 30
[2020-10-28 10:44:00,129 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-28 10:44:00,806 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:44:00,818 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:44:00,821 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:44:00,846 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:44:00,847 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:44:00,847 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:44:00,847 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 28
[2020-10-28 10:44:00,848 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:44:00,848 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:44:00,848 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:44:00,848 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:44:00,848 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-28 10:44:00,848 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:44:00,875 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-28 10:44:00,889 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:44:00,896 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:44:00,953 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:44:00,954 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 27
[2020-10-28 10:44:00,954 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:44:00,954 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 63
[2020-10-28 10:44:00,954 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:44:00,954 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:44:00,955 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:44:00,955 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-28 10:44:00,955 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 27
[2020-10-28 10:44:00,955 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:44:02,388 INFO  L134       CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-28 10:44:02,388 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367881551]
[2020-10-28 10:44:02,388 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-28 10:44:02,389 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-28 10:44:02,389 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644286743]
[2020-10-28 10:44:02,393 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-28 10:44:02,394 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:44:02,394 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-28 10:44:02,395 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-28 10:44:02,395 INFO  L87              Difference]: Start difference. First operand 5826 states and 10165 transitions. Second operand 7 states.
[2020-10-28 10:44:33,701 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-28 10:44:33,702 INFO  L93              Difference]: Finished difference Result 17227 states and 30586 transitions.
[2020-10-28 10:44:33,703 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-10-28 10:44:33,704 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1689
[2020-10-28 10:44:33,704 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-28 10:44:33,773 INFO  L225             Difference]: With dead ends: 17227
[2020-10-28 10:44:33,774 INFO  L226             Difference]: Without dead ends: 11407
[2020-10-28 10:44:33,794 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 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 10:44:33,809 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11407 states.
[2020-10-28 10:44:34,138 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11407 to 11260.
[2020-10-28 10:44:34,139 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 11260 states.
[2020-10-28 10:44:34,173 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11260 states to 11260 states and 17381 transitions.
[2020-10-28 10:44:34,173 INFO  L78                 Accepts]: Start accepts. Automaton has 11260 states and 17381 transitions. Word has length 1689
[2020-10-28 10:44:34,174 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-28 10:44:34,174 INFO  L481      AbstractCegarLoop]: Abstraction has 11260 states and 17381 transitions.
[2020-10-28 10:44:34,174 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-28 10:44:34,174 INFO  L276                IsEmpty]: Start isEmpty. Operand 11260 states and 17381 transitions.
[2020-10-28 10:44:34,229 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1701
[2020-10-28 10:44:34,229 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:44:34,231 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-28 10:44:34,231 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-28 10:44:34,231 INFO  L429      AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:44:34,232 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:44:34,233 INFO  L82        PathProgramCache]: Analyzing trace with hash -1318025186, now seen corresponding path program 1 times
[2020-10-28 10:44:34,233 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:44:34,233 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591608132]
[2020-10-28 10:44:34,234 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:44:34,373 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:44:34,414 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:44:34,505 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:44:35,081 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:44:39,470 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:44:39,471 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1728
[2020-10-28 10:44:39,471 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-28 10:44:39,471 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5093
[2020-10-28 10:44:39,472 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:44:39,472 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:44:39,472 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:44:39,472 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 21
[2020-10-28 10:44:39,472 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 28
[2020-10-28 10:44:39,473 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:44:40,175 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:44:40,178 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:44:40,180 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:44:40,190 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:44:40,190 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:44:40,191 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:44:40,191 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-10-28 10:44:40,191 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:44:40,191 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:44:40,192 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-28 10:44:40,192 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:44:40,192 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-28 10:44:40,192 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:44:40,216 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-28 10:44:40,220 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:44:40,222 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:44:40,234 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:44:40,234 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-10-28 10:44:40,235 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:44:40,235 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 13
[2020-10-28 10:44:40,235 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:44:40,235 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:44:40,235 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:44:40,236 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:44:40,236 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-10-28 10:44:40,236 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:44:40,241 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2020-10-28 10:44:40,249 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:44:40,254 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:44:40,279 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:44:40,312 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:44:40,312 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 27
[2020-10-28 10:44:40,312 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-28 10:44:40,312 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 62
[2020-10-28 10:44:40,313 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:44:40,313 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:44:40,313 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:44:40,313 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-28 10:44:40,314 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 27
[2020-10-28 10:44:40,314 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:44:42,484 INFO  L134       CoverageAnalysis]: Checked inductivity of 40 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-28 10:44:42,484 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591608132]
[2020-10-28 10:44:42,484 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-28 10:44:42,485 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-28 10:44:42,485 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253172919]
[2020-10-28 10:44:42,488 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-28 10:44:42,488 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:44:42,488 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-28 10:44:42,489 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-28 10:44:42,489 INFO  L87              Difference]: Start difference. First operand 11260 states and 17381 transitions. Second operand 7 states.
[2020-10-28 10:45:28,822 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-28 10:45:28,823 INFO  L93              Difference]: Finished difference Result 33523 states and 53112 transitions.
[2020-10-28 10:45:28,829 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-10-28 10:45:28,830 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1700
[2020-10-28 10:45:28,830 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-28 10:45:28,940 INFO  L225             Difference]: With dead ends: 33523
[2020-10-28 10:45:28,940 INFO  L226             Difference]: Without dead ends: 22269
[2020-10-28 10:45:28,978 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 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 10:45:29,006 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22269 states.
[2020-10-28 10:45:29,700 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22269 to 22173.
[2020-10-28 10:45:29,700 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22173 states.
[2020-10-28 10:45:29,761 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22173 states to 22173 states and 32273 transitions.
[2020-10-28 10:45:29,762 INFO  L78                 Accepts]: Start accepts. Automaton has 22173 states and 32273 transitions. Word has length 1700
[2020-10-28 10:45:29,762 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-28 10:45:29,763 INFO  L481      AbstractCegarLoop]: Abstraction has 22173 states and 32273 transitions.
[2020-10-28 10:45:29,763 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-28 10:45:29,763 INFO  L276                IsEmpty]: Start isEmpty. Operand 22173 states and 32273 transitions.
[2020-10-28 10:45:29,856 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1702
[2020-10-28 10:45:29,857 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:45:29,859 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2020-10-28 10:45:29,859 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-28 10:45:29,859 INFO  L429      AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:45:29,860 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:45:29,861 INFO  L82        PathProgramCache]: Analyzing trace with hash -349804873, now seen corresponding path program 1 times
[2020-10-28 10:45:29,861 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:45:29,861 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657858212]
[2020-10-28 10:45:29,862 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:45:29,996 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:45:30,030 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:45:30,783 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:45:33,394 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:45:35,055 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:45:35,055 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1727
[2020-10-28 10:45:35,055 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-28 10:45:35,055 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5055
[2020-10-28 10:45:35,055 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:45:35,055 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:45:35,056 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-28 10:45:35,056 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-28 10:45:35,056 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 43
[2020-10-28 10:45:35,056 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:45:35,484 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:45:35,490 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:45:35,493 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:45:35,503 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:45:35,504 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:45:35,504 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:45:35,504 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 12
[2020-10-28 10:45:35,504 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:45:35,504 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:45:35,505 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:45:35,505 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:45:35,505 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-28 10:45:35,505 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:45:35,545 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-28 10:45:35,555 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:45:35,562 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:45:35,576 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:45:35,742 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:45:35,742 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 39
[2020-10-28 10:45:35,742 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-28 10:45:35,742 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 186
[2020-10-28 10:45:35,743 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:45:35,743 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:45:35,743 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:45:35,744 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-28 10:45:35,744 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 39
[2020-10-28 10:45:35,744 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:45:37,498 INFO  L134       CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-28 10:45:37,499 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657858212]
[2020-10-28 10:45:37,499 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-28 10:45:37,500 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-10-28 10:45:37,500 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158168237]
[2020-10-28 10:45:37,502 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-28 10:45:37,502 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:45:37,502 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-28 10:45:37,503 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-10-28 10:45:37,503 INFO  L87              Difference]: Start difference. First operand 22173 states and 32273 transitions. Second operand 8 states.
[2020-10-28 10:46:22,995 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-28 10:46:22,995 INFO  L93              Difference]: Finished difference Result 88878 states and 142828 transitions.
[2020-10-28 10:46:23,004 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-10-28 10:46:23,004 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 1701
[2020-10-28 10:46:23,005 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-28 10:46:23,310 INFO  L225             Difference]: With dead ends: 88878
[2020-10-28 10:46:23,310 INFO  L226             Difference]: Without dead ends: 66715
[2020-10-28 10:46:23,392 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240
[2020-10-28 10:46:23,466 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 66715 states.
[2020-10-28 10:46:25,550 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 66715 to 66661.
[2020-10-28 10:46:25,550 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 66661 states.
[2020-10-28 10:46:25,769 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 66661 states to 66661 states and 99602 transitions.
[2020-10-28 10:46:25,770 INFO  L78                 Accepts]: Start accepts. Automaton has 66661 states and 99602 transitions. Word has length 1701
[2020-10-28 10:46:25,771 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-28 10:46:25,771 INFO  L481      AbstractCegarLoop]: Abstraction has 66661 states and 99602 transitions.
[2020-10-28 10:46:25,771 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-28 10:46:25,771 INFO  L276                IsEmpty]: Start isEmpty. Operand 66661 states and 99602 transitions.
[2020-10-28 10:46:26,065 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1735
[2020-10-28 10:46:26,065 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:46:26,067 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2020-10-28 10:46:26,067 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-28 10:46:26,068 INFO  L429      AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:46:26,068 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:46:26,069 INFO  L82        PathProgramCache]: Analyzing trace with hash 774379159, now seen corresponding path program 1 times
[2020-10-28 10:46:26,070 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:46:26,070 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273661143]
[2020-10-28 10:46:26,071 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:46:26,218 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:46:26,254 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:46:26,328 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:46:27,329 FATAL L256   erpolLogProxyWrapper]: Now shrinking...