/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 interpolation-heuristic=FIRST --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.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 16:14:05,910 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 16:14:05,914 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 16:14:05,963 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 16:14:05,963 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 16:14:05,965 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 16:14:05,966 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 16:14:05,968 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 16:14:05,970 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 16:14:05,971 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2020-09-24 16:14:05,973 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 16:14:05,974 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 16:14:05,976 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 16:14:05,977 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 16:14:05,978 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 16:14:05,979 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 16:14:05,981 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 16:14:05,983 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 16:14:05,985 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 16:14:05,986 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 16:14:05,988 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 16:14:05,989 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 16:14:05,991 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 16:14:05,992 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 16:14:05,992 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 16:14:05,993 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 16:14:05,994 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 16:14:05,995 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 16:14:05,995 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 16:14:05,996 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 16:14:05,997 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 16:14:05,998 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 16:14:05,999 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 16:14:05,999 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 16:14:06,000 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 16:14:06,000 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 16:14:06,001 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 16:14:06,002 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 16:14:06,003 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 16:14:06,004 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 16:14:06,029 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 16:14:06,029 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 16:14:06,031 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 16:14:06,031 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 16:14:06,031 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 16:14:06,032 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 16:14:06,032 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 16:14:06,032 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 16:14:06,032 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 16:14:06,032 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 16:14:06,033 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 16:14:06,033 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 16:14:06,033 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 16:14:06,033 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 16:14:06,034 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 16:14:06,034 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 16:14:06,034 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 16:14:06,034 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 16:14:06,035 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 16:14:06,035 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 16:14:06,035 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 16:14:06,035 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 16:14:06,035 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 16:14:06,036 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 16:14:06,036 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 16:14:06,036 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 16:14:06,036 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 16:14:06,037 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 16:14:06,037 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 16:14:06,037 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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true;
[2020-09-24 16:14:06,508 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 16:14:06,526 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 16:14:06,531 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 16:14:06,533 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 16:14:06,533 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 16:14:06,535 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c
[2020-09-24 16:14:06,613 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91bf344e1/2e5218a964054e19bc079efb041c122a/FLAGa705403c6
[2020-09-24 16:14:07,312 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 16:14:07,313 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c
[2020-09-24 16:14:07,342 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91bf344e1/2e5218a964054e19bc079efb041c122a/FLAGa705403c6
[2020-09-24 16:14:07,501 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91bf344e1/2e5218a964054e19bc079efb041c122a
[2020-09-24 16:14:07,515 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 16:14:07,522 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 16:14:07,526 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 16:14:07,526 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 16:14:07,530 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 16:14:07,532 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:14:07" (1/1) ...
[2020-09-24 16:14:07,537 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@94cda96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:14:07, skipping insertion in model container
[2020-09-24 16:14:07,537 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:14:07" (1/1) ...
[2020-09-24 16:14:07,547 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 16:14:07,677 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 16:14:08,800 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 16:14:08,816 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 16:14:09,389 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 16:14:09,424 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 16:14:09,426 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:14:09 WrapperNode
[2020-09-24 16:14:09,426 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 16:14:09,427 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 16:14:09,427 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 16:14:09,427 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 16:14:09,447 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:14:09" (1/1) ...
[2020-09-24 16:14:09,449 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:14:09" (1/1) ...
[2020-09-24 16:14:09,505 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:14:09" (1/1) ...
[2020-09-24 16:14:09,505 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:14:09" (1/1) ...
[2020-09-24 16:14:09,584 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:14:09" (1/1) ...
[2020-09-24 16:14:09,629 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:14:09" (1/1) ...
[2020-09-24 16:14:09,639 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:14:09" (1/1) ...
[2020-09-24 16:14:09,651 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 16:14:09,652 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 16:14:09,652 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 16:14:09,652 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 16:14:09,654 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:14:09" (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 16:14:09,742 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 16:14:09,743 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 16:14:09,743 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-09-24 16:14:09,743 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 16:14:09,743 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 16:14:09,744 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2020-09-24 16:14:09,744 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar
[2020-09-24 16:14:09,745 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2020-09-24 16:14:09,746 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2020-09-24 16:14:09,746 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-09-24 16:14:09,746 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-09-24 16:14:09,746 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2020-09-24 16:14:09,747 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2020-09-24 16:14:09,747 INFO  L130     BoogieDeclarations]: Found specification of procedure node1
[2020-09-24 16:14:09,747 INFO  L130     BoogieDeclarations]: Found specification of procedure node2
[2020-09-24 16:14:09,748 INFO  L130     BoogieDeclarations]: Found specification of procedure node3
[2020-09-24 16:14:09,748 INFO  L130     BoogieDeclarations]: Found specification of procedure node4
[2020-09-24 16:14:09,748 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2020-09-24 16:14:09,749 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2020-09-24 16:14:09,749 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 16:14:09,749 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 16:14:09,749 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 16:14:13,146 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 16:14:13,147 INFO  L295             CfgBuilder]: Removed 0 assume(true) statements.
[2020-09-24 16:14:13,162 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:14:13 BoogieIcfgContainer
[2020-09-24 16:14:13,162 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 16:14:13,164 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 16:14:13,164 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 16:14:13,169 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 16:14:13,170 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:14:07" (1/3) ...
[2020-09-24 16:14:13,171 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cbf16b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:14:13, skipping insertion in model container
[2020-09-24 16:14:13,171 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:14:09" (2/3) ...
[2020-09-24 16:14:13,172 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cbf16b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:14:13, skipping insertion in model container
[2020-09-24 16:14:13,172 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:14:13" (3/3) ...
[2020-09-24 16:14:13,175 INFO  L109   eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c
[2020-09-24 16:14:13,191 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 16:14:13,209 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 16:14:13,234 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 16:14:13,282 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 16:14:13,283 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 16:14:13,283 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 16:14:13,283 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 16:14:13,283 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 16:14:13,283 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 16:14:13,284 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 16:14:13,284 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 16:14:13,346 INFO  L276                IsEmpty]: Start isEmpty. Operand 1994 states.
[2020-09-24 16:14:13,482 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 918
[2020-09-24 16:14:13,482 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:14:13,485 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]
[2020-09-24 16:14:13,485 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:14:13,494 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:14:13,496 INFO  L82        PathProgramCache]: Analyzing trace with hash -33800225, now seen corresponding path program 1 times
[2020-09-24 16:14:13,509 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:14:13,509 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64734357]
[2020-09-24 16:14:13,510 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:14:14,566 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:14:14,605 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 16:14:14,605 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 16:14:14,606 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 16:14:14,606 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:14:14,606 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 924
[2020-09-24 16:14:14,607 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:14:14,607 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 22
[2020-09-24 16:14:14,608 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 16:14:14,609 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:14:14,609 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 390
[2020-09-24 16:14:14,609 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 497
[2020-09-24 16:14:14,610 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:14:16,519 WARN  L193               SmtUtils]: Spent 544.00 ms on a formula simplification that was a NOOP. DAG size: 277
[2020-09-24 16:14:16,522 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 16:14:16,533 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:14:16,535 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 16:14:16,535 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 16:14:16,535 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 16:14:16,535 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:14:16,536 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 102
[2020-09-24 16:14:16,536 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:14:16,536 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-24 16:14:16,536 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 16:14:16,537 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:14:16,537 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:14:16,537 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:14:16,537 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:14:17,734 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 16:14:17,735 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64734357]
[2020-09-24 16:14:17,737 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 16:14:17,737 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-24 16:14:17,738 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697260132]
[2020-09-24 16:14:17,745 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-24 16:14:17,746 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 16:14:17,763 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-24 16:14:17,764 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-24 16:14:17,766 INFO  L87              Difference]: Start difference. First operand 1994 states. Second operand 4 states.
[2020-09-24 16:14:26,930 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 16:14:26,931 INFO  L93              Difference]: Finished difference Result 3363 states and 4438 transitions.
[2020-09-24 16:14:26,932 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-09-24 16:14:26,935 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 917
[2020-09-24 16:14:26,941 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 16:14:26,980 INFO  L225             Difference]: With dead ends: 3363
[2020-09-24 16:14:26,981 INFO  L226             Difference]: Without dead ends: 2747
[2020-09-24 16:14:26,991 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-24 16:14:27,019 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2747 states.
[2020-09-24 16:14:27,188 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2747 to 2734.
[2020-09-24 16:14:27,190 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2734 states.
[2020-09-24 16:14:27,204 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2734 states to 2734 states and 3423 transitions.
[2020-09-24 16:14:27,206 INFO  L78                 Accepts]: Start accepts. Automaton has 2734 states and 3423 transitions. Word has length 917
[2020-09-24 16:14:27,210 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 16:14:27,210 INFO  L479      AbstractCegarLoop]: Abstraction has 2734 states and 3423 transitions.
[2020-09-24 16:14:27,210 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-24 16:14:27,210 INFO  L276                IsEmpty]: Start isEmpty. Operand 2734 states and 3423 transitions.
[2020-09-24 16:14:27,254 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 918
[2020-09-24 16:14:27,255 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:14:27,256 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]
[2020-09-24 16:14:27,256 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 16:14:27,257 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:14:27,258 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:14:27,259 INFO  L82        PathProgramCache]: Analyzing trace with hash -35077377, now seen corresponding path program 1 times
[2020-09-24 16:14:27,259 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:14:27,260 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458313933]
[2020-09-24 16:14:27,261 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:14:27,786 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:14:27,816 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 16:14:27,816 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 16:14:27,817 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 16:14:27,817 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:14:27,817 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 924
[2020-09-24 16:14:27,817 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:14:27,818 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 24
[2020-09-24 16:14:27,824 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 16:14:27,824 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-24 16:14:27,825 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 277
[2020-09-24 16:14:27,825 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 164
[2020-09-24 16:14:27,826 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:14:28,804 WARN  L193               SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 277
[2020-09-24 16:14:28,805 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 16:14:28,817 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:14:28,819 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 16:14:28,820 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 16:14:28,820 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 16:14:28,820 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:14:28,820 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 102
[2020-09-24 16:14:28,820 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:14:28,821 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-24 16:14:28,821 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 16:14:28,821 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:14:28,822 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:14:28,822 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:14:28,822 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:14:29,831 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 16:14:29,832 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458313933]
[2020-09-24 16:14:29,832 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 16:14:29,833 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-24 16:14:29,833 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757557615]
[2020-09-24 16:14:29,836 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 16:14:29,836 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 16:14:29,837 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 16:14:29,837 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-24 16:14:29,837 INFO  L87              Difference]: Start difference. First operand 2734 states and 3423 transitions. Second operand 5 states.
[2020-09-24 16:14:43,020 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 16:14:43,021 INFO  L93              Difference]: Finished difference Result 7534 states and 9564 transitions.
[2020-09-24 16:14:43,021 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-09-24 16:14:43,021 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 917
[2020-09-24 16:14:43,022 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 16:14:43,046 INFO  L225             Difference]: With dead ends: 7534
[2020-09-24 16:14:43,046 INFO  L226             Difference]: Without dead ends: 5098
[2020-09-24 16:14:43,052 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-09-24 16:14:43,060 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5098 states.
[2020-09-24 16:14:43,205 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5098 to 5096.
[2020-09-24 16:14:43,205 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5096 states.
[2020-09-24 16:14:43,222 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5096 states to 5096 states and 6428 transitions.
[2020-09-24 16:14:43,222 INFO  L78                 Accepts]: Start accepts. Automaton has 5096 states and 6428 transitions. Word has length 917
[2020-09-24 16:14:43,223 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 16:14:43,224 INFO  L479      AbstractCegarLoop]: Abstraction has 5096 states and 6428 transitions.
[2020-09-24 16:14:43,224 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 16:14:43,224 INFO  L276                IsEmpty]: Start isEmpty. Operand 5096 states and 6428 transitions.
[2020-09-24 16:14:43,248 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 920
[2020-09-24 16:14:43,249 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:14:43,250 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]
[2020-09-24 16:14:43,250 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 16:14:43,251 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:14:43,251 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:14:43,252 INFO  L82        PathProgramCache]: Analyzing trace with hash -1772782596, now seen corresponding path program 1 times
[2020-09-24 16:14:43,252 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:14:43,252 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321743481]
[2020-09-24 16:14:43,253 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:14:43,653 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:14:43,663 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 16:14:43,663 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 16:14:43,664 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 16:14:43,664 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:14:43,664 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 926
[2020-09-24 16:14:43,665 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:14:43,665 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 16:14:43,665 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 16:14:43,666 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:14:43,666 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 291
[2020-09-24 16:14:43,666 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 169
[2020-09-24 16:14:43,667 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:14:44,586 WARN  L193               SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 277
[2020-09-24 16:14:44,587 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 16:14:44,597 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:14:44,599 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 16:14:44,600 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 16:14:44,600 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 16:14:44,600 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:14:44,600 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 102
[2020-09-24 16:14:44,601 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:14:44,601 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-24 16:14:44,601 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 16:14:44,601 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:14:44,601 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:14:44,602 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:14:44,602 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:14:45,255 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 16:14:45,256 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321743481]
[2020-09-24 16:14:45,256 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 16:14:45,256 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-24 16:14:45,257 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567736166]
[2020-09-24 16:14:45,258 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-24 16:14:45,259 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 16:14:45,259 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-24 16:14:45,259 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-24 16:14:45,259 INFO  L87              Difference]: Start difference. First operand 5096 states and 6428 transitions. Second operand 4 states.
[2020-09-24 16:14:59,583 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 16:14:59,583 INFO  L93              Difference]: Finished difference Result 14310 states and 18145 transitions.
[2020-09-24 16:14:59,584 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-09-24 16:14:59,585 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 919
[2020-09-24 16:14:59,586 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 16:14:59,632 INFO  L225             Difference]: With dead ends: 14310
[2020-09-24 16:14:59,632 INFO  L226             Difference]: Without dead ends: 9718
[2020-09-24 16:14:59,642 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-24 16:14:59,655 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9718 states.
[2020-09-24 16:14:59,899 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9718 to 9716.
[2020-09-24 16:14:59,900 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 9716 states.
[2020-09-24 16:14:59,924 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9716 states to 9716 states and 12285 transitions.
[2020-09-24 16:14:59,925 INFO  L78                 Accepts]: Start accepts. Automaton has 9716 states and 12285 transitions. Word has length 919
[2020-09-24 16:14:59,926 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 16:14:59,926 INFO  L479      AbstractCegarLoop]: Abstraction has 9716 states and 12285 transitions.
[2020-09-24 16:14:59,926 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-24 16:14:59,927 INFO  L276                IsEmpty]: Start isEmpty. Operand 9716 states and 12285 transitions.
[2020-09-24 16:14:59,957 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 920
[2020-09-24 16:14:59,957 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:14:59,958 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]
[2020-09-24 16:14:59,958 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-24 16:14:59,959 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:14:59,959 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:14:59,959 INFO  L82        PathProgramCache]: Analyzing trace with hash 2093996901, now seen corresponding path program 1 times
[2020-09-24 16:14:59,960 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:14:59,961 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830104920]
[2020-09-24 16:14:59,962 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:15:00,129 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:15:00,138 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 16:15:00,139 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 16:15:00,139 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 16:15:00,142 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:15:00,148 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 926
[2020-09-24 16:15:00,149 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:15:00,149 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 16:15:00,149 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 16:15:00,149 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:15:00,149 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 290
[2020-09-24 16:15:00,150 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-09-24 16:15:00,150 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:15:00,919 WARN  L193               SmtUtils]: Spent 508.00 ms on a formula simplification that was a NOOP. DAG size: 277
[2020-09-24 16:15:00,921 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 16:15:00,929 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:15:00,930 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 16:15:00,931 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 16:15:00,931 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 16:15:00,931 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:15:00,939 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 102
[2020-09-24 16:15:00,940 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:15:00,940 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-24 16:15:00,940 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 16:15:00,941 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:15:00,941 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:15:00,941 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:15:00,941 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:15:01,366 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 16:15:01,366 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830104920]
[2020-09-24 16:15:01,367 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 16:15:01,367 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-24 16:15:01,367 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069322159]
[2020-09-24 16:15:01,368 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-24 16:15:01,369 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 16:15:01,369 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-24 16:15:01,369 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-24 16:15:01,370 INFO  L87              Difference]: Start difference. First operand 9716 states and 12285 transitions. Second operand 4 states.