/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label00.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 17:09:12,889 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 17:09:12,893 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 17:09:12,940 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 17:09:12,941 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 17:09:12,942 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 17:09:12,943 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 17:09:12,945 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 17:09:12,947 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
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[2020-09-24 17:09:12,950 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 17:09:12,950 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 17:09:12,951 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 17:09:12,953 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 17:09:12,954 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 17:09:12,955 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 17:09:12,956 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 17:09:12,958 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 17:09:12,960 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 17:09:12,962 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 17:09:12,964 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 17:09:12,965 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 17:09:12,966 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 17:09:12,969 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 17:09:12,969 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 17:09:12,969 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 17:09:12,970 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 17:09:12,971 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 17:09:12,972 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 17:09:12,972 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 17:09:12,973 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 17:09:12,974 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 17:09:12,974 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 17:09:12,976 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 17:09:12,976 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 17:09:12,977 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
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[2020-09-24 17:09:12,977 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-09-24 17:09:12,980 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 17:09:12,981 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
[2020-09-24 17:09:13,007 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 17:09:13,007 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 17:09:13,009 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 17:09:13,009 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 17:09:13,009 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 17:09:13,009 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 17:09:13,009 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 17:09:13,010 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 17:09:13,010 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 17:09:13,010 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 17:09:13,010 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 17:09:13,010 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 17:09:13,011 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 17:09:13,011 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 17:09:13,011 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 17:09:13,011 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 17:09:13,011 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 17:09:13,012 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 17:09:13,012 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 17:09:13,012 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 17:09:13,012 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 17:09:13,013 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 17:09:13,013 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 17:09:13,013 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 17:09:13,013 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 17:09:13,013 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 17:09:13,014 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 17:09:13,014 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 17:09:13,014 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 17:09:13,014 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
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 -> SingleStatement
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;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true;
[2020-09-24 17:09:13,477 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 17:09:13,499 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 17:09:13,505 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 17:09:13,506 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 17:09:13,508 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 17:09:13,510 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label00.c
[2020-09-24 17:09:13,597 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/768bf2fcc/c37bebcee0634ced81c14fa33ee2a720/FLAG2648913ee
[2020-09-24 17:09:14,327 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 17:09:14,328 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label00.c
[2020-09-24 17:09:14,341 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/768bf2fcc/c37bebcee0634ced81c14fa33ee2a720/FLAG2648913ee
[2020-09-24 17:09:14,483 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/768bf2fcc/c37bebcee0634ced81c14fa33ee2a720
[2020-09-24 17:09:14,499 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 17:09:14,505 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 17:09:14,507 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 17:09:14,507 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 17:09:14,511 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 17:09:14,512 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:09:14" (1/1) ...
[2020-09-24 17:09:14,517 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e7cadc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:14, skipping insertion in model container
[2020-09-24 17:09:14,517 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:09:14" (1/1) ...
[2020-09-24 17:09:14,527 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 17:09:14,582 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 17:09:15,029 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 17:09:15,043 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 17:09:15,289 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 17:09:15,308 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 17:09:15,308 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:15 WrapperNode
[2020-09-24 17:09:15,308 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 17:09:15,309 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 17:09:15,309 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 17:09:15,309 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 17:09:15,323 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:15" (1/1) ...
[2020-09-24 17:09:15,324 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:15" (1/1) ...
[2020-09-24 17:09:15,343 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:15" (1/1) ...
[2020-09-24 17:09:15,344 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:15" (1/1) ...
[2020-09-24 17:09:15,385 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:15" (1/1) ...
[2020-09-24 17:09:15,401 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:15" (1/1) ...
[2020-09-24 17:09:15,409 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:15" (1/1) ...
[2020-09-24 17:09:15,418 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 17:09:15,419 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 17:09:15,419 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 17:09:15,419 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 17:09:15,421 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:15" (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
[2020-09-24 17:09:15,534 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 17:09:15,534 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 17:09:15,534 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-09-24 17:09:15,534 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 17:09:15,535 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-09-24 17:09:15,535 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 17:09:15,535 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 17:09:15,535 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-09-24 17:09:15,535 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 17:09:15,536 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 17:09:15,536 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 17:09:16,872 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 17:09:16,875 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-24 17:09:16,892 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:09:16 BoogieIcfgContainer
[2020-09-24 17:09:16,893 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 17:09:16,894 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 17:09:16,894 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 17:09:16,900 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 17:09:16,900 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:09:14" (1/3) ...
[2020-09-24 17:09:16,901 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e584b9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:09:16, skipping insertion in model container
[2020-09-24 17:09:16,902 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:15" (2/3) ...
[2020-09-24 17:09:16,902 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e584b9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:09:16, skipping insertion in model container
[2020-09-24 17:09:16,903 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:09:16" (3/3) ...
[2020-09-24 17:09:16,906 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem01_label00.c
[2020-09-24 17:09:16,918 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 17:09:16,935 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 17:09:16,958 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 17:09:17,003 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 17:09:17,004 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 17:09:17,004 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 17:09:17,004 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 17:09:17,004 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 17:09:17,004 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 17:09:17,005 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 17:09:17,005 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 17:09:17,041 INFO  L276                IsEmpty]: Start isEmpty. Operand 525 states.
[2020-09-24 17:09:17,063 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 137
[2020-09-24 17:09:17,063 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 17:09:17,065 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]
[2020-09-24 17:09:17,066 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 17:09:17,073 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 17:09:17,074 INFO  L82        PathProgramCache]: Analyzing trace with hash 1944492271, now seen corresponding path program 1 times
[2020-09-24 17:09:17,084 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 17:09:17,085 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339853739]
[2020-09-24 17:09:17,085 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 17:09:17,345 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:09:17,443 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:09:17,765 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:09:18,553 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:09:19,095 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:09:21,390 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:09:22,720 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:09:24,423 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:09:24,925 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:09:29,123 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:09:29,123 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 145
[2020-09-24 17:09:29,123 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 8
[2020-09-24 17:09:29,124 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 11770
[2020-09-24 17:09:29,125 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:09:29,125 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-09-24 17:09:29,126 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 18
[2020-09-24 17:09:29,126 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 116
[2020-09-24 17:09:29,126 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-24 17:09:29,913 WARN  L193               SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 42
[2020-09-24 17:09:30,064 WARN  L193               SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 40
[2020-09-24 17:09:30,215 WARN  L193               SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 36
[2020-09-24 17:09:30,365 WARN  L193               SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33
[2020-09-24 17:09:30,666 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 17:09:30,674 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:09:30,681 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:09:30,756 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:09:30,756 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 27
[2020-09-24 17:09:30,757 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 17:09:30,757 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 81
[2020-09-24 17:09:30,757 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:09:30,757 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-24 17:09:30,758 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 17:09:30,758 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-09-24 17:09:30,758 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 17:09:31,006 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 17:09:31,007 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339853739]
[2020-09-24 17:09:31,009 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 17:09:31,009 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18
[2020-09-24 17:09:31,011 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707037060]
[2020-09-24 17:09:31,017 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 18 states
[2020-09-24 17:09:31,018 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 17:09:31,031 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2020-09-24 17:09:31,032 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=189, Unknown=0, NotChecked=0, Total=306
[2020-09-24 17:09:31,035 INFO  L87              Difference]: Start difference. First operand 525 states. Second operand 18 states.
[2020-09-24 17:09:31,407 WARN  L193               SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 92
[2020-09-24 17:09:31,720 WARN  L193               SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 113
[2020-09-24 17:09:31,942 WARN  L193               SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 115
[2020-09-24 17:09:32,202 WARN  L193               SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 115
[2020-09-24 17:09:32,612 WARN  L193               SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 115
[2020-09-24 17:09:33,622 WARN  L193               SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 115
[2020-09-24 17:09:34,068 WARN  L193               SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 115
[2020-09-24 17:09:34,918 WARN  L193               SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 114
[2020-09-24 17:09:37,530 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 17:09:37,530 INFO  L93              Difference]: Finished difference Result 1528 states and 2153 transitions.
[2020-09-24 17:09:37,531 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. 
[2020-09-24 17:09:37,533 INFO  L78                 Accepts]: Start accepts. Automaton has 18 states. Word has length 136
[2020-09-24 17:09:37,534 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 17:09:37,568 INFO  L225             Difference]: With dead ends: 1528
[2020-09-24 17:09:37,568 INFO  L226             Difference]: Without dead ends: 909
[2020-09-24 17:09:37,578 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=367, Invalid=689, Unknown=0, NotChecked=0, Total=1056
[2020-09-24 17:09:37,599 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 909 states.
[2020-09-24 17:09:37,682 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 825.
[2020-09-24 17:09:37,684 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 825 states.
[2020-09-24 17:09:37,689 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 980 transitions.
[2020-09-24 17:09:37,691 INFO  L78                 Accepts]: Start accepts. Automaton has 825 states and 980 transitions. Word has length 136
[2020-09-24 17:09:37,692 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 17:09:37,693 INFO  L479      AbstractCegarLoop]: Abstraction has 825 states and 980 transitions.
[2020-09-24 17:09:37,693 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 18 states.
[2020-09-24 17:09:37,693 INFO  L276                IsEmpty]: Start isEmpty. Operand 825 states and 980 transitions.
[2020-09-24 17:09:37,706 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 154
[2020-09-24 17:09:37,707 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 17:09:37,707 INFO  L422         BasicCegarLoop]: trace histogram [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]
[2020-09-24 17:09:37,708 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 17:09:37,708 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 17:09:37,708 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 17:09:37,708 INFO  L82        PathProgramCache]: Analyzing trace with hash 881202700, now seen corresponding path program 1 times
[2020-09-24 17:09:37,709 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 17:09:37,709 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567949384]
[2020-09-24 17:09:37,709 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 17:09:37,757 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:09:37,798 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:09:37,884 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:09:38,159 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:09:38,985 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:09:40,752 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:09:41,578 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:09:43,682 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:09:45,005 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:09:45,069 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:09:45,131 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:09:53,482 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:09:53,482 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 164
[2020-09-24 17:09:53,482 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 10
[2020-09-24 17:09:53,483 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 15724
[2020-09-24 17:09:53,483 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:09:53,483 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 22
[2020-09-24 17:09:53,483 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 18
[2020-09-24 17:09:53,484 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 104
[2020-09-24 17:09:53,484 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 17:09:54,178 WARN  L193               SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 40
[2020-09-24 17:09:54,315 WARN  L193               SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 38
[2020-09-24 17:09:54,466 WARN  L193               SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36
[2020-09-24 17:09:54,597 WARN  L193               SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 33
[2020-09-24 17:09:54,779 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 17:09:54,786 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:09:54,793 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:09:54,856 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:09:54,857 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 27
[2020-09-24 17:09:54,857 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 17:09:54,857 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 69
[2020-09-24 17:09:54,857 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:09:54,857 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-24 17:09:54,857 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 17:09:54,858 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-09-24 17:09:54,858 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 17:09:54,955 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30
[2020-09-24 17:09:54,961 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:09:54,967 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:09:55,012 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:09:55,012 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-24 17:09:55,012 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 17:09:55,013 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 50
[2020-09-24 17:09:55,013 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:09:55,013 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-24 17:09:55,014 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-09-24 17:09:55,014 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 12
[2020-09-24 17:09:55,014 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 17:09:55,327 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 17:09:55,328 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567949384]
[2020-09-24 17:09:55,328 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 17:09:55,328 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21
[2020-09-24 17:09:55,328 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026924104]
[2020-09-24 17:09:55,331 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 21 states
[2020-09-24 17:09:55,331 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 17:09:55,331 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2020-09-24 17:09:55,332 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420
[2020-09-24 17:09:55,332 INFO  L87              Difference]: Start difference. First operand 825 states and 980 transitions. Second operand 21 states.
[2020-09-24 17:09:56,150 WARN  L193               SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85
[2020-09-24 17:09:56,433 WARN  L193               SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93
[2020-09-24 17:09:57,173 WARN  L193               SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 91
[2020-09-24 17:09:57,439 WARN  L193               SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64
[2020-09-24 17:09:58,250 WARN  L193               SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62
[2020-09-24 17:09:58,933 WARN  L193               SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 90
[2020-09-24 17:09:59,667 WARN  L193               SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 89
[2020-09-24 17:10:00,262 WARN  L193               SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 88
[2020-09-24 17:10:00,564 WARN  L193               SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 86
[2020-09-24 17:10:00,816 WARN  L193               SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72
[2020-09-24 17:10:02,238 WARN  L193               SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 84
[2020-09-24 17:10:02,631 WARN  L193               SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82
[2020-09-24 17:10:02,997 WARN  L193               SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 80
[2020-09-24 17:10:03,228 WARN  L193               SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78
[2020-09-24 17:10:03,481 WARN  L193               SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75