/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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --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.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-25 02:23:22,899 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-25 02:23:22,903 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-25 02:23:22,933 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-25 02:23:22,934 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-25 02:23:22,942 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-25 02:23:22,945 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2020-09-25 02:23:22,961 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-25 02:23:22,964 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-25 02:23:22,966 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-25 02:23:22,967 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-25 02:23:22,969 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-25 02:23:22,970 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-25 02:23:22,979 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-25 02:23:22,981 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-25 02:23:22,983 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-25 02:23:22,984 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-25 02:23:22,985 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-25 02:23:22,997 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2020-09-25 02:23:23,001 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-25 02:23:23,002 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-25 02:23:23,005 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
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[2020-09-25 02:23:23,006 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
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[2020-09-25 02:23:23,014 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-25 02:23:23,017 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
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[2020-09-25 02:23:23,018 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-09-25 02:23:23,020 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-25 02:23:23,021 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
[2020-09-25 02:23:23,072 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-25 02:23:23,073 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-25 02:23:23,074 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-25 02:23:23,075 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-25 02:23:23,075 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-25 02:23:23,075 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-25 02:23:23,076 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-25 02:23:23,076 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-25 02:23:23,076 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-25 02:23:23,076 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-25 02:23:23,077 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-25 02:23:23,078 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-25 02:23:23,078 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-25 02:23:23,078 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-25 02:23:23,078 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-25 02:23:23,079 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-25 02:23:23,079 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-25 02:23:23,079 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-25 02:23:23,079 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-25 02:23:23,079 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-25 02:23:23,080 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-25 02:23:23,080 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 02:23:23,081 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-25 02:23:23,081 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-25 02:23:23,081 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-25 02:23:23,081 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-25 02:23:23,081 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-25 02:23:23,081 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-25 02:23:23,082 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-25 02:23:23,082 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;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;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;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;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;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;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;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;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;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;
[2020-09-25 02:23:23,545 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-25 02:23:23,571 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-25 02:23:23,576 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-25 02:23:23,579 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-25 02:23:23,579 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-25 02:23:23,580 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c
[2020-09-25 02:23:23,666 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f745def1b/117d1021836d4476a17c406308f002d9/FLAG283fad44e
[2020-09-25 02:23:24,466 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-25 02:23:24,467 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c
[2020-09-25 02:23:24,507 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f745def1b/117d1021836d4476a17c406308f002d9/FLAG283fad44e
[2020-09-25 02:23:24,583 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f745def1b/117d1021836d4476a17c406308f002d9
[2020-09-25 02:23:24,596 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-25 02:23:24,601 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-25 02:23:24,603 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-25 02:23:24,603 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-25 02:23:24,607 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-25 02:23:24,608 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:23:24" (1/1) ...
[2020-09-25 02:23:24,612 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bee4c42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:23:24, skipping insertion in model container
[2020-09-25 02:23:24,613 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:23:24" (1/1) ...
[2020-09-25 02:23:24,621 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-25 02:23:24,810 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-25 02:23:26,480 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-25 02:23:26,509 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-25 02:23:27,728 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-25 02:23:27,774 INFO  L208         MainTranslator]: Completed translation
[2020-09-25 02:23:27,777 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:23:27 WrapperNode
[2020-09-25 02:23:27,777 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-25 02:23:27,778 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-25 02:23:27,779 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-25 02:23:27,779 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-25 02:23:27,799 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:23:27" (1/1) ...
[2020-09-25 02:23:27,802 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:23:27" (1/1) ...
[2020-09-25 02:23:27,873 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:23:27" (1/1) ...
[2020-09-25 02:23:27,874 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:23:27" (1/1) ...
[2020-09-25 02:23:27,941 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:23:27" (1/1) ...
[2020-09-25 02:23:27,977 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:23:27" (1/1) ...
[2020-09-25 02:23:27,996 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:23:27" (1/1) ...
[2020-09-25 02:23:28,028 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-25 02:23:28,028 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-25 02:23:28,028 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-25 02:23:28,029 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-25 02:23:28,030 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:23:27" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 02:23:28,124 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-25 02:23:28,125 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-25 02:23:28,125 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-09-25 02:23:28,126 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-25 02:23:28,126 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-25 02:23:28,126 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2020-09-25 02:23:28,127 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar
[2020-09-25 02:23:28,127 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2020-09-25 02:23:28,128 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2020-09-25 02:23:28,128 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-09-25 02:23:28,128 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-09-25 02:23:28,129 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2020-09-25 02:23:28,129 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2020-09-25 02:23:28,129 INFO  L130     BoogieDeclarations]: Found specification of procedure node1
[2020-09-25 02:23:28,130 INFO  L130     BoogieDeclarations]: Found specification of procedure node2
[2020-09-25 02:23:28,131 INFO  L130     BoogieDeclarations]: Found specification of procedure node3
[2020-09-25 02:23:28,131 INFO  L130     BoogieDeclarations]: Found specification of procedure node4
[2020-09-25 02:23:28,131 INFO  L130     BoogieDeclarations]: Found specification of procedure node5
[2020-09-25 02:23:28,131 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2020-09-25 02:23:28,132 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2020-09-25 02:23:28,132 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-25 02:23:28,132 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-25 02:23:28,133 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-25 02:23:33,388 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-25 02:23:33,389 INFO  L295             CfgBuilder]: Removed 0 assume(true) statements.
[2020-09-25 02:23:33,408 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:23:33 BoogieIcfgContainer
[2020-09-25 02:23:33,408 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-25 02:23:33,410 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-25 02:23:33,410 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-25 02:23:33,415 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-25 02:23:33,415 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:23:24" (1/3) ...
[2020-09-25 02:23:33,417 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41c30c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:23:33, skipping insertion in model container
[2020-09-25 02:23:33,417 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:23:27" (2/3) ...
[2020-09-25 02:23:33,418 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41c30c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:23:33, skipping insertion in model container
[2020-09-25 02:23:33,418 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:23:33" (3/3) ...
[2020-09-25 02:23:33,420 INFO  L109   eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c
[2020-09-25 02:23:33,438 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-25 02:23:33,454 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-25 02:23:33,486 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-25 02:23:33,536 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-25 02:23:33,537 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-25 02:23:33,537 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-25 02:23:33,537 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-25 02:23:33,537 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-25 02:23:33,538 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-25 02:23:33,538 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-25 02:23:33,538 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-25 02:23:33,624 INFO  L276                IsEmpty]: Start isEmpty. Operand 3444 states.
[2020-09-25 02:23:33,782 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1419
[2020-09-25 02:23:33,783 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 02:23:33,787 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 02:23:33,787 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 02:23:33,798 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 02:23:33,800 INFO  L82        PathProgramCache]: Analyzing trace with hash 542613819, now seen corresponding path program 1 times
[2020-09-25 02:23:33,817 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 02:23:33,818 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53210732]
[2020-09-25 02:23:33,819 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 02:23:36,820 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:23:38,534 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:23:40,183 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:23:41,612 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:23:42,103 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:23:42,104 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1425
[2020-09-25 02:23:42,104 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-25 02:23:42,104 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5263
[2020-09-25 02:23:42,108 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:23:42,108 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 02:23:42,108 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 435
[2020-09-25 02:23:42,109 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 315
[2020-09-25 02:23:42,109 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-09-25 02:23:44,328 WARN  L193               SmtUtils]: Spent 877.00 ms on a formula simplification that was a NOOP. DAG size: 397
[2020-09-25 02:23:44,331 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 02:23:44,347 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:23:44,367 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:23:44,466 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:23:44,466 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 143
[2020-09-25 02:23:44,467 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 02:23:44,467 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 118
[2020-09-25 02:23:44,467 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:23:44,467 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 02:23:44,468 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 02:23:44,468 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 02:23:44,468 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 02:23:46,333 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 02:23:46,334 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [53210732]
[2020-09-25 02:23:46,336 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 02:23:46,336 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-25 02:23:46,337 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327893057]
[2020-09-25 02:23:46,346 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-25 02:23:46,347 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 02:23:46,364 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-25 02:23:46,365 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-25 02:23:46,368 INFO  L87              Difference]: Start difference. First operand 3444 states. Second operand 5 states.
[2020-09-25 02:24:15,188 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 02:24:15,188 INFO  L93              Difference]: Finished difference Result 9339 states and 12774 transitions.
[2020-09-25 02:24:15,189 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-09-25 02:24:15,191 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 1418
[2020-09-25 02:24:15,195 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 02:24:15,253 INFO  L225             Difference]: With dead ends: 9339
[2020-09-25 02:24:15,253 INFO  L226             Difference]: Without dead ends: 5922
[2020-09-25 02:24:15,268 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-09-25 02:24:15,304 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5922 states.
[2020-09-25 02:24:15,535 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5922 to 5920.
[2020-09-25 02:24:15,537 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5920 states.
[2020-09-25 02:24:15,561 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5920 states to 5920 states and 7757 transitions.
[2020-09-25 02:24:15,564 INFO  L78                 Accepts]: Start accepts. Automaton has 5920 states and 7757 transitions. Word has length 1418
[2020-09-25 02:24:15,567 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-25 02:24:15,567 INFO  L479      AbstractCegarLoop]: Abstraction has 5920 states and 7757 transitions.
[2020-09-25 02:24:15,567 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-25 02:24:15,567 INFO  L276                IsEmpty]: Start isEmpty. Operand 5920 states and 7757 transitions.
[2020-09-25 02:24:15,670 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1421
[2020-09-25 02:24:15,670 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 02:24:15,671 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 02:24:15,672 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-25 02:24:15,672 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 02:24:15,672 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 02:24:15,673 INFO  L82        PathProgramCache]: Analyzing trace with hash -332033666, now seen corresponding path program 1 times
[2020-09-25 02:24:15,674 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 02:24:15,674 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236038651]
[2020-09-25 02:24:15,675 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 02:24:16,153 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:24:16,711 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:24:17,322 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:24:18,251 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:24:18,898 FATAL L256   erpolLogProxyWrapper]: Now shrinking...