/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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 20:45:18,643 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 20:45:18,648 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 20:45:18,690 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 20:45:18,691 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 20:45:18,699 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 20:45:18,701 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2020-09-24 20:45:18,711 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2020-09-24 20:45:18,719 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 20:45:18,720 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 20:45:18,722 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 20:45:18,723 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 20:45:18,725 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 20:45:18,733 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 20:45:18,736 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 20:45:18,737 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 20:45:18,738 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 20:45:18,739 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 20:45:18,751 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 20:45:18,752 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 20:45:18,758 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 20:45:18,759 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 20:45:18,760 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
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[2020-09-24 20:45:18,761 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
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[2020-09-24 20:45:18,762 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 20:45:18,766 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 20:45:18,767 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 20:45:18,767 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 20:45:18,768 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
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[2020-09-24 20:45:18,768 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-09-24 20:45:18,771 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 20:45:18,772 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 20:45:18,815 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 20:45:18,815 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 20:45:18,818 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 20:45:18,818 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 20:45:18,818 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 20:45:18,819 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 20:45:18,819 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 20:45:18,819 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 20:45:18,820 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 20:45:18,820 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 20:45:18,821 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 20:45:18,821 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 20:45:18,821 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 20:45:18,822 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 20:45:18,822 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 20:45:18,822 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 20:45:18,822 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 20:45:18,823 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 20:45:18,823 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 20:45:18,823 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 20:45:18,824 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 20:45:18,824 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 20:45:18,824 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 20:45:18,824 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 20:45:18,825 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 20:45:18,825 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 20:45:18,825 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 20:45:18,825 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 20:45:18,825 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 20:45:18,826 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;
[2020-09-24 20:45:19,317 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 20:45:19,342 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 20:45:19,351 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 20:45:19,353 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 20:45:19,354 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 20:45:19,355 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c
[2020-09-24 20:45:19,435 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3462ba24/a0fa53a65643452f9c57513b23c385b3/FLAGf53bdc045
[2020-09-24 20:45:20,219 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 20:45:20,220 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c
[2020-09-24 20:45:20,238 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3462ba24/a0fa53a65643452f9c57513b23c385b3/FLAGf53bdc045
[2020-09-24 20:45:20,481 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3462ba24/a0fa53a65643452f9c57513b23c385b3
[2020-09-24 20:45:20,495 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 20:45:20,500 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 20:45:20,502 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 20:45:20,503 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 20:45:20,507 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 20:45:20,508 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:45:20" (1/1) ...
[2020-09-24 20:45:20,512 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@656101fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:20, skipping insertion in model container
[2020-09-24 20:45:20,513 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:45:20" (1/1) ...
[2020-09-24 20:45:20,522 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 20:45:20,601 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 20:45:21,254 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 20:45:21,267 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 20:45:21,767 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 20:45:21,788 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 20:45:21,789 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:21 WrapperNode
[2020-09-24 20:45:21,789 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 20:45:21,790 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 20:45:21,790 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 20:45:21,790 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 20:45:21,804 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:21" (1/1) ...
[2020-09-24 20:45:21,804 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:21" (1/1) ...
[2020-09-24 20:45:21,829 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:21" (1/1) ...
[2020-09-24 20:45:21,829 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:21" (1/1) ...
[2020-09-24 20:45:21,870 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:21" (1/1) ...
[2020-09-24 20:45:21,901 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:21" (1/1) ...
[2020-09-24 20:45:21,908 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:21" (1/1) ...
[2020-09-24 20:45:21,919 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 20:45:21,919 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 20:45:21,920 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 20:45:21,921 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 20:45:21,922 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:21" (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 20:45:21,998 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 20:45:21,998 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 20:45:21,998 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-09-24 20:45:21,998 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 20:45:21,998 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 20:45:21,999 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2020-09-24 20:45:21,999 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2020-09-24 20:45:21,999 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2020-09-24 20:45:21,999 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-09-24 20:45:21,999 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-09-24 20:45:21,999 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2020-09-24 20:45:22,000 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2020-09-24 20:45:22,000 INFO  L130     BoogieDeclarations]: Found specification of procedure node1
[2020-09-24 20:45:22,000 INFO  L130     BoogieDeclarations]: Found specification of procedure node2
[2020-09-24 20:45:22,000 INFO  L130     BoogieDeclarations]: Found specification of procedure node3
[2020-09-24 20:45:22,000 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2020-09-24 20:45:22,001 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2020-09-24 20:45:22,001 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 20:45:22,001 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 20:45:22,001 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 20:45:23,987 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 20:45:23,987 INFO  L295             CfgBuilder]: Removed 0 assume(true) statements.
[2020-09-24 20:45:24,002 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:45:24 BoogieIcfgContainer
[2020-09-24 20:45:24,002 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 20:45:24,005 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 20:45:24,005 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 20:45:24,009 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 20:45:24,009 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:45:20" (1/3) ...
[2020-09-24 20:45:24,010 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@698bbf6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:45:24, skipping insertion in model container
[2020-09-24 20:45:24,010 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:21" (2/3) ...
[2020-09-24 20:45:24,011 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@698bbf6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:45:24, skipping insertion in model container
[2020-09-24 20:45:24,011 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:45:24" (3/3) ...
[2020-09-24 20:45:24,013 INFO  L109   eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c
[2020-09-24 20:45:24,025 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 20:45:24,037 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations.
[2020-09-24 20:45:24,059 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 5 error locations.
[2020-09-24 20:45:24,092 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 20:45:24,092 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 20:45:24,092 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 20:45:24,092 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 20:45:24,092 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 20:45:24,092 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 20:45:24,093 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 20:45:24,093 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 20:45:24,148 INFO  L276                IsEmpty]: Start isEmpty. Operand 1237 states.
[2020-09-24 20:45:24,199 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 466
[2020-09-24 20:45:24,199 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 20:45:24,202 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 20:45:24,203 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 20:45:24,215 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 20:45:24,216 INFO  L82        PathProgramCache]: Analyzing trace with hash 1578062424, now seen corresponding path program 1 times
[2020-09-24 20:45:24,227 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 20:45:24,228 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82491607]
[2020-09-24 20:45:24,228 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 20:45:24,780 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:45:25,048 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:45:25,457 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:45:25,819 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:45:26,042 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:45:26,243 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:45:26,462 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:45:26,907 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:45:29,803 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:45:29,904 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:45:29,904 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 472
[2020-09-24 20:45:29,905 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 8
[2020-09-24 20:45:29,905 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5114
[2020-09-24 20:45:29,908 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:45:29,908 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-24 20:45:29,909 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 179
[2020-09-24 20:45:29,909 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 71
[2020-09-24 20:45:29,910 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-09-24 20:45:30,622 WARN  L193               SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 202
[2020-09-24 20:45:30,624 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 20:45:30,635 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:45:30,646 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:45:30,698 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:45:30,699 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 76
[2020-09-24 20:45:30,699 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:45:30,699 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 62
[2020-09-24 20:45:30,699 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:45:30,700 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 20:45:30,700 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 20:45:30,700 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 20:45:30,700 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 20:45:31,056 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 20:45:31,057 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82491607]
[2020-09-24 20:45:31,059 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 20:45:31,060 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-24 20:45:31,061 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923464862]
[2020-09-24 20:45:31,068 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 20:45:31,068 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 20:45:31,085 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 20:45:31,087 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-24 20:45:31,089 INFO  L87              Difference]: Start difference. First operand 1237 states. Second operand 5 states.
[2020-09-24 20:45:40,419 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 20:45:40,420 INFO  L93              Difference]: Finished difference Result 3246 states and 4159 transitions.
[2020-09-24 20:45:40,421 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-09-24 20:45:40,423 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 465
[2020-09-24 20:45:40,426 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 20:45:40,459 INFO  L225             Difference]: With dead ends: 3246
[2020-09-24 20:45:40,460 INFO  L226             Difference]: Without dead ends: 1961
[2020-09-24 20:45:40,471 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-09-24 20:45:40,498 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1961 states.
[2020-09-24 20:45:40,623 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1961 to 1834.
[2020-09-24 20:45:40,624 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1834 states.
[2020-09-24 20:45:40,633 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 2171 transitions.
[2020-09-24 20:45:40,635 INFO  L78                 Accepts]: Start accepts. Automaton has 1834 states and 2171 transitions. Word has length 465
[2020-09-24 20:45:40,637 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 20:45:40,637 INFO  L479      AbstractCegarLoop]: Abstraction has 1834 states and 2171 transitions.
[2020-09-24 20:45:40,637 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 20:45:40,637 INFO  L276                IsEmpty]: Start isEmpty. Operand 1834 states and 2171 transitions.
[2020-09-24 20:45:40,651 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 467
[2020-09-24 20:45:40,651 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 20:45:40,652 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]
[2020-09-24 20:45:40,652 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 20:45:40,652 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 20:45:40,653 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 20:45:40,653 INFO  L82        PathProgramCache]: Analyzing trace with hash 1171018046, now seen corresponding path program 1 times
[2020-09-24 20:45:40,653 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 20:45:40,654 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340932918]
[2020-09-24 20:45:40,654 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 20:45:40,736 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:45:40,830 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:45:41,002 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:45:41,197 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:45:41,382 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:45:41,545 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:45:41,680 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:45:42,005 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:45:42,328 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:45:45,754 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:45:45,754 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 473
[2020-09-24 20:45:45,754 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 8
[2020-09-24 20:45:45,755 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5014
[2020-09-24 20:45:45,756 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:45:45,756 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-24 20:45:45,757 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 180
[2020-09-24 20:45:45,757 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 144
[2020-09-24 20:45:45,757 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 20:45:46,374 WARN  L193               SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 202
[2020-09-24 20:45:46,376 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 20:45:46,385 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:45:46,407 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:45:46,458 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:45:46,459 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 76
[2020-09-24 20:45:46,459 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:45:46,460 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 62
[2020-09-24 20:45:46,460 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:45:46,460 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 20:45:46,461 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 20:45:46,461 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 20:45:46,461 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 20:45:46,929 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 20:45:46,930 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340932918]
[2020-09-24 20:45:46,930 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 20:45:46,931 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-24 20:45:46,931 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771920841]
[2020-09-24 20:45:46,937 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 20:45:46,937 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 20:45:46,937 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 20:45:46,938 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-24 20:45:46,938 INFO  L87              Difference]: Start difference. First operand 1834 states and 2171 transitions. Second operand 5 states.
[2020-09-24 20:45:53,592 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 20:45:53,593 INFO  L93              Difference]: Finished difference Result 5012 states and 5981 transitions.
[2020-09-24 20:45:53,593 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-09-24 20:45:53,594 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 466
[2020-09-24 20:45:53,595 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 20:45:53,611 INFO  L225             Difference]: With dead ends: 5012
[2020-09-24 20:45:53,611 INFO  L226             Difference]: Without dead ends: 3371
[2020-09-24 20:45:53,616 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-09-24 20:45:53,621 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3371 states.
[2020-09-24 20:45:53,721 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3371 to 3256.
[2020-09-24 20:45:53,721 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3256 states.
[2020-09-24 20:45:53,731 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3256 states to 3256 states and 3876 transitions.
[2020-09-24 20:45:53,731 INFO  L78                 Accepts]: Start accepts. Automaton has 3256 states and 3876 transitions. Word has length 466
[2020-09-24 20:45:53,732 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 20:45:53,732 INFO  L479      AbstractCegarLoop]: Abstraction has 3256 states and 3876 transitions.
[2020-09-24 20:45:53,732 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 20:45:53,732 INFO  L276                IsEmpty]: Start isEmpty. Operand 3256 states and 3876 transitions.
[2020-09-24 20:45:53,741 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 468
[2020-09-24 20:45:53,741 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 20:45:53,742 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]
[2020-09-24 20:45:53,742 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 20:45:53,742 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 20:45:53,742 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 20:45:53,743 INFO  L82        PathProgramCache]: Analyzing trace with hash 1744253298, now seen corresponding path program 1 times
[2020-09-24 20:45:53,743 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 20:45:53,743 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445921772]
[2020-09-24 20:45:53,743 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 20:45:53,853 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:45:54,025 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:45:54,215 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:45:54,412 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:45:54,560 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:45:54,686 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:45:54,813 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:45:56,200 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:45:58,841 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:45:58,911 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:45:58,911 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 474
[2020-09-24 20:45:58,912 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 8
[2020-09-24 20:45:58,912 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5054
[2020-09-24 20:45:58,912 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:45:58,912 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-24 20:45:58,912 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 181
[2020-09-24 20:45:58,913 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 78
[2020-09-24 20:45:58,913 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 20:45:59,417 WARN  L193               SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 202
[2020-09-24 20:45:59,418 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 20:45:59,424 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:45:59,435 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:45:59,482 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:45:59,482 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 76
[2020-09-24 20:45:59,483 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:45:59,483 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 56
[2020-09-24 20:45:59,483 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:45:59,484 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 20:45:59,484 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 20:45:59,484 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 20:45:59,485 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 20:45:59,977 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 20:45:59,978 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445921772]
[2020-09-24 20:45:59,978 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 20:45:59,979 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-24 20:45:59,979 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186587473]
[2020-09-24 20:45:59,980 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 20:45:59,981 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 20:45:59,981 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 20:45:59,982 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-24 20:45:59,982 INFO  L87              Difference]: Start difference. First operand 3256 states and 3876 transitions. Second operand 5 states.
[2020-09-24 20:46:06,748 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 20:46:06,748 INFO  L93              Difference]: Finished difference Result 9116 states and 10876 transitions.
[2020-09-24 20:46:06,749 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-09-24 20:46:06,749 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 467
[2020-09-24 20:46:06,750 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 20:46:06,785 INFO  L225             Difference]: With dead ends: 9116
[2020-09-24 20:46:06,785 INFO  L226             Difference]: Without dead ends: 6116
[2020-09-24 20:46:06,794 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-09-24 20:46:06,802 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6116 states.
[2020-09-24 20:46:06,984 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6116 to 5982.
[2020-09-24 20:46:06,984 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5982 states.
[2020-09-24 20:46:07,005 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5982 states to 5982 states and 7120 transitions.
[2020-09-24 20:46:07,005 INFO  L78                 Accepts]: Start accepts. Automaton has 5982 states and 7120 transitions. Word has length 467
[2020-09-24 20:46:07,006 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 20:46:07,006 INFO  L479      AbstractCegarLoop]: Abstraction has 5982 states and 7120 transitions.
[2020-09-24 20:46:07,006 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 20:46:07,006 INFO  L276                IsEmpty]: Start isEmpty. Operand 5982 states and 7120 transitions.
[2020-09-24 20:46:07,021 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 469
[2020-09-24 20:46:07,021 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 20:46:07,022 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]
[2020-09-24 20:46:07,022 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-24 20:46:07,023 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 20:46:07,023 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 20:46:07,024 INFO  L82        PathProgramCache]: Analyzing trace with hash -1593495664, now seen corresponding path program 1 times
[2020-09-24 20:46:07,024 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 20:46:07,030 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284096532]
[2020-09-24 20:46:07,031 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 20:46:07,093 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:46:07,166 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:46:07,299 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:46:07,492 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:46:07,639 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:46:07,770 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:46:07,884 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:46:09,013 FATAL L256   erpolLogProxyWrapper]: Now shrinking...