/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/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 17:24:17,449 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 17:24:17,453 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 17:24:17,480 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 17:24:17,481 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 17:24:17,482 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 17:24:17,484 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2020-09-24 17:24:17,492 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 17:24:17,493 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 17:24:17,494 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 17:24:17,496 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 17:24:17,497 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 17:24:17,498 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 17:24:17,500 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 17:24:17,502 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 17:24:17,504 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 17:24:17,506 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 17:24:17,507 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 17:24:17,508 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 17:24:17,512 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 17:24:17,512 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 17:24:17,512 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 17:24:17,514 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 17:24:17,514 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 17:24:17,515 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 17:24:17,516 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
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[2020-09-24 17:24:17,518 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 17:24:17,519 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 17:24:17,520 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 17:24:17,524 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 17:24:17,525 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
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[2020-09-24 17:24:17,525 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-09-24 17:24:17,527 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 17:24:17,530 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 17:24:17,578 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 17:24:17,579 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 17:24:17,581 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 17:24:17,581 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 17:24:17,582 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 17:24:17,582 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 17:24:17,582 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 17:24:17,582 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 17:24:17,583 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 17:24:17,583 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 17:24:17,584 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 17:24:17,584 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 17:24:17,584 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 17:24:17,585 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 17:24:17,585 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 17:24:17,585 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 17:24:17,585 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 17:24:17,586 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 17:24:17,586 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 17:24:17,586 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 17:24:17,586 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 17:24:17,587 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 17:24:17,587 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 17:24:17,587 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 17:24:17,587 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 17:24:17,588 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 17:24:17,588 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 17:24:17,588 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 17:24:17,588 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 17:24:17,589 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 17:24:18,047 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 17:24:18,065 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 17:24:18,070 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 17:24:18,072 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 17:24:18,072 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 17:24:18,073 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c
[2020-09-24 17:24:18,174 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96a67ab4d/eb9fded8b7c94c5dae58bf9d10bc241e/FLAG737507084
[2020-09-24 17:24:18,861 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 17:24:18,863 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c
[2020-09-24 17:24:18,886 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96a67ab4d/eb9fded8b7c94c5dae58bf9d10bc241e/FLAG737507084
[2020-09-24 17:24:19,071 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96a67ab4d/eb9fded8b7c94c5dae58bf9d10bc241e
[2020-09-24 17:24:19,087 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 17:24:19,094 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 17:24:19,095 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 17:24:19,095 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 17:24:19,099 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 17:24:19,100 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:24:19" (1/1) ...
[2020-09-24 17:24:19,105 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b134fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:24:19, skipping insertion in model container
[2020-09-24 17:24:19,105 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:24:19" (1/1) ...
[2020-09-24 17:24:19,114 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 17:24:19,199 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 17:24:19,891 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 17:24:19,904 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 17:24:20,395 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 17:24:20,426 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 17:24:20,427 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:24:20 WrapperNode
[2020-09-24 17:24:20,427 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 17:24:20,428 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 17:24:20,428 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 17:24:20,428 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 17:24:20,443 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:24:20" (1/1) ...
[2020-09-24 17:24:20,444 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:24:20" (1/1) ...
[2020-09-24 17:24:20,467 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:24:20" (1/1) ...
[2020-09-24 17:24:20,468 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:24:20" (1/1) ...
[2020-09-24 17:24:20,529 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:24:20" (1/1) ...
[2020-09-24 17:24:20,571 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:24:20" (1/1) ...
[2020-09-24 17:24:20,580 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:24:20" (1/1) ...
[2020-09-24 17:24:20,595 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 17:24:20,598 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 17:24:20,598 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 17:24:20,599 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 17:24:20,600 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:24:20" (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 17:24:20,709 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 17:24:20,710 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 17:24:20,711 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-09-24 17:24:20,711 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 17:24:20,711 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 17:24:20,711 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2020-09-24 17:24:20,711 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2020-09-24 17:24:20,712 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2020-09-24 17:24:20,712 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-09-24 17:24:20,713 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-09-24 17:24:20,713 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2020-09-24 17:24:20,713 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2020-09-24 17:24:20,714 INFO  L130     BoogieDeclarations]: Found specification of procedure node1
[2020-09-24 17:24:20,714 INFO  L130     BoogieDeclarations]: Found specification of procedure node2
[2020-09-24 17:24:20,714 INFO  L130     BoogieDeclarations]: Found specification of procedure node3
[2020-09-24 17:24:20,715 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2020-09-24 17:24:20,715 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2020-09-24 17:24:20,716 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 17:24:20,716 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 17:24:20,716 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 17:24:23,008 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 17:24:23,008 INFO  L295             CfgBuilder]: Removed 0 assume(true) statements.
[2020-09-24 17:24:23,023 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:24:23 BoogieIcfgContainer
[2020-09-24 17:24:23,023 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 17:24:23,024 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 17:24:23,025 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 17:24:23,028 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 17:24:23,029 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:24:19" (1/3) ...
[2020-09-24 17:24:23,030 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10a832e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:24:23, skipping insertion in model container
[2020-09-24 17:24:23,030 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:24:20" (2/3) ...
[2020-09-24 17:24:23,031 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10a832e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:24:23, skipping insertion in model container
[2020-09-24 17:24:23,031 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:24:23" (3/3) ...
[2020-09-24 17:24:23,033 INFO  L109   eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c
[2020-09-24 17:24:23,045 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 17:24:23,058 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations.
[2020-09-24 17:24:23,078 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 5 error locations.
[2020-09-24 17:24:23,111 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 17:24:23,112 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 17:24:23,112 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 17:24:23,112 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 17:24:23,112 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 17:24:23,112 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 17:24:23,112 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 17:24:23,112 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 17:24:23,156 INFO  L276                IsEmpty]: Start isEmpty. Operand 1237 states.
[2020-09-24 17:24:23,197 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 466
[2020-09-24 17:24:23,198 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 17:24:23,200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:24:23,200 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 17:24:23,209 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 17:24:23,209 INFO  L82        PathProgramCache]: Analyzing trace with hash 1578062424, now seen corresponding path program 1 times
[2020-09-24 17:24:23,221 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 17:24:23,221 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967236244]
[2020-09-24 17:24:23,222 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 17:24:23,766 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:24:24,059 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:24:24,377 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:24:24,636 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:24:24,860 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:24:25,033 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:24:25,190 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:24:25,625 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:24:28,338 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:24:28,690 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:24:37,389 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:24:38,087 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:24:38,378 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:25:11,168 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:25:11,493 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:25:11,812 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:25:12,131 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:25:12,437 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:25:12,744 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:25:13,112 FATAL L256   erpolLogProxyWrapper]: Now shrinking...