/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_label08.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 17:09:35,287 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 17:09:35,292 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 17:09:35,337 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 17:09:35,339 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 17:09:35,347 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 17:09:35,349 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 17:09:35,353 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 17:09:35,356 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 17:09:35,360 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 17:09:35,361 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 17:09:35,362 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 17:09:35,362 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 17:09:35,366 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 17:09:35,369 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 17:09:35,371 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 17:09:35,373 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 17:09:35,374 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 17:09:35,375 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 17:09:35,383 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 17:09:35,385 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 17:09:35,386 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 17:09:35,386 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 17:09:35,388 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 17:09:35,401 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 17:09:35,401 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 17:09:35,401 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 17:09:35,402 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 17:09:35,405 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 17:09:35,406 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 17:09:35,406 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 17:09:35,407 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 17:09:35,409 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 17:09:35,410 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 17:09:35,411 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 17:09:35,412 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 17:09:35,413 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 17:09:35,413 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 17:09:35,413 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 17:09:35,414 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 17:09:35,416 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 17:09:35,417 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 17:09:35,465 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 17:09:35,466 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 17:09:35,468 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 17:09:35,469 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 17:09:35,469 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 17:09:35,469 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 17:09:35,470 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 17:09:35,470 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 17:09:35,470 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 17:09:35,470 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 17:09:35,471 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 17:09:35,472 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 17:09:35,472 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 17:09:35,472 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 17:09:35,473 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 17:09:35,473 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 17:09:35,473 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 17:09:35,473 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 17:09:35,473 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 17:09:35,474 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 17:09:35,474 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 17:09:35,474 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 17:09:35,474 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 17:09:35,474 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 17:09:35,475 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 17:09:35,475 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 17:09:35,475 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 17:09:35,475 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 17:09:35,475 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 17:09:35,476 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 17:09:35,928 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 17:09:35,949 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 17:09:35,953 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 17:09:35,955 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 17:09:35,956 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 17:09:35,958 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label08.c
[2020-09-24 17:09:36,058 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f60942b30/690615a3b7974b9a9605bf6e0516b696/FLAG5fe8ee696
[2020-09-24 17:09:36,718 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 17:09:36,719 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label08.c
[2020-09-24 17:09:36,734 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f60942b30/690615a3b7974b9a9605bf6e0516b696/FLAG5fe8ee696
[2020-09-24 17:09:36,939 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f60942b30/690615a3b7974b9a9605bf6e0516b696
[2020-09-24 17:09:36,951 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 17:09:36,957 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 17:09:36,958 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 17:09:36,958 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 17:09:36,963 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 17:09:36,964 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:09:36" (1/1) ...
[2020-09-24 17:09:36,968 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5783693b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:36, skipping insertion in model container
[2020-09-24 17:09:36,968 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:09:36" (1/1) ...
[2020-09-24 17:09:36,978 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 17:09:37,037 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 17:09:37,514 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 17:09:37,523 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 17:09:37,751 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 17:09:37,781 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 17:09:37,781 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:37 WrapperNode
[2020-09-24 17:09:37,781 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 17:09:37,782 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 17:09:37,782 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 17:09:37,782 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 17:09:37,798 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:37" (1/1) ...
[2020-09-24 17:09:37,798 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:37" (1/1) ...
[2020-09-24 17:09:37,824 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:37" (1/1) ...
[2020-09-24 17:09:37,825 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:37" (1/1) ...
[2020-09-24 17:09:37,878 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:37" (1/1) ...
[2020-09-24 17:09:37,905 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:37" (1/1) ...
[2020-09-24 17:09:37,917 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:37" (1/1) ...
[2020-09-24 17:09:37,925 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 17:09:37,926 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 17:09:37,926 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 17:09:37,926 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 17:09:37,928 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:37" (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 17:09:38,030 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 17:09:38,031 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 17:09:38,031 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-09-24 17:09:38,032 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 17:09:38,032 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-09-24 17:09:38,032 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 17:09:38,032 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 17:09:38,032 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-09-24 17:09:38,033 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 17:09:38,034 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 17:09:38,034 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 17:09:39,335 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 17:09:39,335 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-24 17:09:39,344 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:09:39 BoogieIcfgContainer
[2020-09-24 17:09:39,344 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 17:09:39,345 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 17:09:39,346 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 17:09:39,351 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 17:09:39,351 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:09:36" (1/3) ...
[2020-09-24 17:09:39,352 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501e69ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:09:39, skipping insertion in model container
[2020-09-24 17:09:39,352 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:37" (2/3) ...
[2020-09-24 17:09:39,353 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501e69ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:09:39, skipping insertion in model container
[2020-09-24 17:09:39,353 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:09:39" (3/3) ...
[2020-09-24 17:09:39,355 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem01_label08.c
[2020-09-24 17:09:39,367 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 17:09:39,378 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 17:09:39,401 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 17:09:39,439 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 17:09:39,439 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 17:09:39,439 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 17:09:39,439 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 17:09:39,440 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 17:09:39,440 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 17:09:39,440 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 17:09:39,440 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 17:09:39,472 INFO  L276                IsEmpty]: Start isEmpty. Operand 525 states.
[2020-09-24 17:09:39,494 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 142
[2020-09-24 17:09:39,494 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 17:09:39,496 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]
[2020-09-24 17:09:39,496 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 17:09:39,504 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 17:09:39,504 INFO  L82        PathProgramCache]: Analyzing trace with hash 461278893, now seen corresponding path program 1 times
[2020-09-24 17:09:39,516 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 17:09:39,516 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485969589]
[2020-09-24 17:09:39,517 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 17:09:39,770 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:09:39,878 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:09:40,429 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:09:40,540 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:09:40,598 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:09:40,653 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:09:40,861 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:09:41,464 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:09:41,767 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:09:42,805 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:09:42,915 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:09:44,759 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:09:51,586 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:09:51,587 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 150
[2020-09-24 17:09:51,587 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 11
[2020-09-24 17:09:51,587 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 11809
[2020-09-24 17:09:51,588 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:09:51,589 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-24 17:09:51,589 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 18
[2020-09-24 17:09:51,589 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 131
[2020-09-24 17:09:51,589 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 17:09:51,773 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 17:09:51,787 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:09:51,795 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:09:51,823 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:09:51,824 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 27
[2020-09-24 17:09:51,825 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 17:09:51,825 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 35
[2020-09-24 17:09:51,825 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:09:51,826 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 17:09:51,826 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 17:09:51,826 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 14
[2020-09-24 17:09:51,826 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 17:09:51,899 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 17:09:51,901 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485969589]
[2020-09-24 17:09:51,904 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 17:09:51,904 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-24 17:09:51,905 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270330006]
[2020-09-24 17:09:51,913 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-24 17:09:51,914 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 17:09:51,932 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-24 17:09:51,933 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-24 17:09:51,936 INFO  L87              Difference]: Start difference. First operand 525 states. Second operand 4 states.
[2020-09-24 17:09:54,168 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 17:09:54,168 INFO  L93              Difference]: Finished difference Result 1268 states and 1667 transitions.
[2020-09-24 17:09:54,172 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-09-24 17:09:54,173 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 141
[2020-09-24 17:09:54,175 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 17:09:54,217 INFO  L225             Difference]: With dead ends: 1268
[2020-09-24 17:09:54,217 INFO  L226             Difference]: Without dead ends: 694
[2020-09-24 17:09:54,231 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-09-24 17:09:54,261 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 694 states.
[2020-09-24 17:09:54,363 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603.
[2020-09-24 17:09:54,365 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 603 states.
[2020-09-24 17:09:54,369 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions.
[2020-09-24 17:09:54,371 INFO  L78                 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 141
[2020-09-24 17:09:54,372 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 17:09:54,372 INFO  L479      AbstractCegarLoop]: Abstraction has 603 states and 719 transitions.
[2020-09-24 17:09:54,372 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-24 17:09:54,373 INFO  L276                IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions.
[2020-09-24 17:09:54,382 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 163
[2020-09-24 17:09:54,383 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 17:09:54,386 INFO  L422         BasicCegarLoop]: trace histogram [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]
[2020-09-24 17:09:54,386 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 17:09:54,387 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 17:09:54,387 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 17:09:54,387 INFO  L82        PathProgramCache]: Analyzing trace with hash 1572128645, now seen corresponding path program 1 times
[2020-09-24 17:09:54,387 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 17:09:54,387 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50284629]
[2020-09-24 17:09:54,388 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 17:09:54,428 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:09:54,451 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:09:54,538 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:09:54,788 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:09:57,378 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:09:57,739 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:09:59,008 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:10:02,180 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:10:07,553 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:10:08,282 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:10:09,046 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:10:13,376 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:10:15,083 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:10:15,144 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:10:18,382 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:10:18,521 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:10:19,410 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:10:25,455 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:10:25,456 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 173
[2020-09-24 17:10:25,456 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 16
[2020-09-24 17:10:25,456 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 31024
[2020-09-24 17:10:25,456 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:10:25,456 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-09-24 17:10:25,457 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 20
[2020-09-24 17:10:25,457 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 152
[2020-09-24 17:10:25,457 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 17:10:25,578 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 17:10:25,583 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:10:25,588 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:10:25,607 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:10:25,607 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 27
[2020-09-24 17:10:25,607 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 17:10:25,607 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 22
[2020-09-24 17:10:25,608 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:10:25,608 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 17:10:25,608 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 17:10:25,608 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 16
[2020-09-24 17:10:25,608 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 17:10:25,638 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30
[2020-09-24 17:10:25,644 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:10:25,648 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:10:25,666 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:10:25,685 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:10:25,685 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 17
[2020-09-24 17:10:25,686 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 17:10:25,686 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 40
[2020-09-24 17:10:25,686 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:10:25,686 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 17:10:25,687 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-09-24 17:10:25,687 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 16
[2020-09-24 17:10:25,687 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 17:10:25,761 INFO  L134       CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2020-09-24 17:10:25,762 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50284629]
[2020-09-24 17:10:25,763 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 17:10:25,763 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-09-24 17:10:25,763 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667976407]
[2020-09-24 17:10:25,767 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-24 17:10:25,768 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 17:10:25,768 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-24 17:10:25,768 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-09-24 17:10:25,769 INFO  L87              Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states.