/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c


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


This is Ultimate 0.1.25-177f698
[2020-08-21 20:44:38,110 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-08-21 20:44:38,112 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-08-21 20:44:38,155 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-08-21 20:44:38,156 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-08-21 20:44:38,167 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-08-21 20:44:38,169 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-08-21 20:44:38,171 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-08-21 20:44:38,174 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-08-21 20:44:38,175 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-08-21 20:44:38,177 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-08-21 20:44:38,179 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-08-21 20:44:38,179 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-08-21 20:44:38,182 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-08-21 20:44:38,183 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-08-21 20:44:38,185 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-08-21 20:44:38,186 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-08-21 20:44:38,188 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-08-21 20:44:38,190 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-08-21 20:44:38,196 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-08-21 20:44:38,197 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-08-21 20:44:38,199 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-08-21 20:44:38,201 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-08-21 20:44:38,201 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-08-21 20:44:38,206 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-08-21 20:44:38,206 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-08-21 20:44:38,206 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-08-21 20:44:38,209 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-08-21 20:44:38,209 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-08-21 20:44:38,211 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-08-21 20:44:38,211 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-08-21 20:44:38,212 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-08-21 20:44:38,213 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-08-21 20:44:38,213 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-08-21 20:44:38,214 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-08-21 20:44:38,215 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-08-21 20:44:38,215 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-08-21 20:44:38,215 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-08-21 20:44:38,216 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-08-21 20:44:38,216 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-08-21 20:44:38,218 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-08-21 20:44:38,218 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
[2020-08-21 20:44:38,260 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-08-21 20:44:38,261 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-08-21 20:44:38,262 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-08-21 20:44:38,262 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-08-21 20:44:38,263 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-08-21 20:44:38,263 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-08-21 20:44:38,263 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-08-21 20:44:38,263 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-08-21 20:44:38,263 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-08-21 20:44:38,264 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-08-21 20:44:38,265 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-08-21 20:44:38,265 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-08-21 20:44:38,265 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-08-21 20:44:38,265 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-08-21 20:44:38,266 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-08-21 20:44:38,266 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-08-21 20:44:38,266 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-08-21 20:44:38,266 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-08-21 20:44:38,266 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-08-21 20:44:38,267 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-08-21 20:44:38,267 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-08-21 20:44:38,267 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-21 20:44:38,267 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-08-21 20:44:38,267 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-08-21 20:44:38,268 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-08-21 20:44:38,268 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-08-21 20:44:38,268 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-08-21 20:44:38,268 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-08-21 20:44:38,268 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-08-21 20:44:38,268 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.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;
[2020-08-21 20:44:38,540 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-08-21 20:44:38,552 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-08-21 20:44:38,555 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-08-21 20:44:38,557 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-08-21 20:44:38,557 INFO  L275        PluginConnector]: CDTParser initialized
[2020-08-21 20:44:38,558 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c
[2020-08-21 20:44:38,630 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b462cae6/28d0fb0924f94e13bfaf8faae779bbd2/FLAG33a729ff1
[2020-08-21 20:44:39,303 INFO  L306              CDTParser]: Found 1 translation units.
[2020-08-21 20:44:39,304 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c
[2020-08-21 20:44:39,323 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b462cae6/28d0fb0924f94e13bfaf8faae779bbd2/FLAG33a729ff1
[2020-08-21 20:44:39,472 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b462cae6/28d0fb0924f94e13bfaf8faae779bbd2
[2020-08-21 20:44:39,480 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-08-21 20:44:39,481 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-08-21 20:44:39,482 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-08-21 20:44:39,482 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-08-21 20:44:39,486 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-08-21 20:44:39,487 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:44:39" (1/1) ...
[2020-08-21 20:44:39,489 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6708ede7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:44:39, skipping insertion in model container
[2020-08-21 20:44:39,490 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:44:39" (1/1) ...
[2020-08-21 20:44:39,497 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-08-21 20:44:39,657 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-08-21 20:44:41,074 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-21 20:44:41,086 INFO  L203         MainTranslator]: Completed pre-run
[2020-08-21 20:44:42,051 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-21 20:44:42,079 INFO  L208         MainTranslator]: Completed translation
[2020-08-21 20:44:42,081 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:44:42 WrapperNode
[2020-08-21 20:44:42,081 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-08-21 20:44:42,082 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-08-21 20:44:42,082 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-08-21 20:44:42,082 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-08-21 20:44:42,101 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:44:42" (1/1) ...
[2020-08-21 20:44:42,103 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:44:42" (1/1) ...
[2020-08-21 20:44:42,169 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:44:42" (1/1) ...
[2020-08-21 20:44:42,169 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:44:42" (1/1) ...
[2020-08-21 20:44:42,241 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:44:42" (1/1) ...
[2020-08-21 20:44:42,272 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:44:42" (1/1) ...
[2020-08-21 20:44:42,283 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:44:42" (1/1) ...
[2020-08-21 20:44:42,300 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-08-21 20:44:42,301 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-08-21 20:44:42,301 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-08-21 20:44:42,302 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-08-21 20:44:42,303 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:44:42" (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
[2020-08-21 20:44:42,385 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-08-21 20:44:42,386 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-08-21 20:44:42,386 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-08-21 20:44:42,386 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-08-21 20:44:42,386 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-08-21 20:44:42,387 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2020-08-21 20:44:42,387 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar
[2020-08-21 20:44:42,387 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2020-08-21 20:44:42,387 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2020-08-21 20:44:42,387 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-08-21 20:44:42,388 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-08-21 20:44:42,388 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2020-08-21 20:44:42,388 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2020-08-21 20:44:42,388 INFO  L130     BoogieDeclarations]: Found specification of procedure node1
[2020-08-21 20:44:42,389 INFO  L130     BoogieDeclarations]: Found specification of procedure node2
[2020-08-21 20:44:42,389 INFO  L130     BoogieDeclarations]: Found specification of procedure node3
[2020-08-21 20:44:42,389 INFO  L130     BoogieDeclarations]: Found specification of procedure node4
[2020-08-21 20:44:42,389 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2020-08-21 20:44:42,390 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2020-08-21 20:44:42,390 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-08-21 20:44:42,390 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-08-21 20:44:42,391 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-08-21 20:44:45,572 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-08-21 20:44:45,572 INFO  L295             CfgBuilder]: Removed 0 assume(true) statements.
[2020-08-21 20:44:45,590 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:44:45 BoogieIcfgContainer
[2020-08-21 20:44:45,591 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-08-21 20:44:45,592 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-08-21 20:44:45,593 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-08-21 20:44:45,596 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-08-21 20:44:45,596 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 08:44:39" (1/3) ...
[2020-08-21 20:44:45,597 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@331b98b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:44:45, skipping insertion in model container
[2020-08-21 20:44:45,597 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:44:42" (2/3) ...
[2020-08-21 20:44:45,597 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@331b98b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:44:45, skipping insertion in model container
[2020-08-21 20:44:45,597 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:44:45" (3/3) ...
[2020-08-21 20:44:45,599 INFO  L109   eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c
[2020-08-21 20:44:45,607 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-08-21 20:44:45,616 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations.
[2020-08-21 20:44:45,628 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 12 error locations.
[2020-08-21 20:44:45,655 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-08-21 20:44:45,655 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-08-21 20:44:45,655 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-08-21 20:44:45,655 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-08-21 20:44:45,655 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-08-21 20:44:45,655 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-08-21 20:44:45,656 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-08-21 20:44:45,656 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-08-21 20:44:45,691 INFO  L276                IsEmpty]: Start isEmpty. Operand 1027 states.
[2020-08-21 20:44:45,722 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 328
[2020-08-21 20:44:45,723 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 20:44:45,724 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]
[2020-08-21 20:44:45,725 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 20:44:45,731 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 20:44:45,731 INFO  L82        PathProgramCache]: Analyzing trace with hash -537993708, now seen corresponding path program 1 times
[2020-08-21 20:44:45,737 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 20:44:45,738 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150703694]
[2020-08-21 20:44:45,738 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 20:44:46,355 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:44:47,379 WARN  L193               SmtUtils]: Spent 634.00 ms on a formula simplification that was a NOOP. DAG size: 322
[2020-08-21 20:44:47,383 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 20:44:47,390 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:44:47,590 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 20:44:47,591 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150703694]
[2020-08-21 20:44:47,593 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 20:44:47,593 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-08-21 20:44:47,594 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842519637]
[2020-08-21 20:44:47,603 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-08-21 20:44:47,603 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 20:44:47,617 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-08-21 20:44:47,618 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-08-21 20:44:47,620 INFO  L87              Difference]: Start difference. First operand 1027 states. Second operand 4 states.
[2020-08-21 20:44:48,175 WARN  L193               SmtUtils]: Spent 471.00 ms on a formula simplification that was a NOOP. DAG size: 323
[2020-08-21 20:44:55,312 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 20:44:55,312 INFO  L93              Difference]: Finished difference Result 1794 states and 3183 transitions.
[2020-08-21 20:44:55,313 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-08-21 20:44:55,314 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 327
[2020-08-21 20:44:55,317 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 20:44:55,345 INFO  L225             Difference]: With dead ends: 1794
[2020-08-21 20:44:55,345 INFO  L226             Difference]: Without dead ends: 1483
[2020-08-21 20:44:55,352 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-08-21 20:44:55,375 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1483 states.
[2020-08-21 20:44:55,503 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 1481.
[2020-08-21 20:44:55,505 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1481 states.
[2020-08-21 20:44:55,512 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 2263 transitions.
[2020-08-21 20:44:55,513 INFO  L78                 Accepts]: Start accepts. Automaton has 1481 states and 2263 transitions. Word has length 327
[2020-08-21 20:44:55,519 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 20:44:55,519 INFO  L479      AbstractCegarLoop]: Abstraction has 1481 states and 2263 transitions.
[2020-08-21 20:44:55,520 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-08-21 20:44:55,520 INFO  L276                IsEmpty]: Start isEmpty. Operand 1481 states and 2263 transitions.
[2020-08-21 20:44:55,533 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 328
[2020-08-21 20:44:55,533 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 20:44:55,534 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]
[2020-08-21 20:44:55,534 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-08-21 20:44:55,535 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 20:44:55,535 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 20:44:55,535 INFO  L82        PathProgramCache]: Analyzing trace with hash 297127498, now seen corresponding path program 1 times
[2020-08-21 20:44:55,536 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 20:44:55,536 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475074176]
[2020-08-21 20:44:55,536 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 20:44:55,819 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:44:56,728 WARN  L193               SmtUtils]: Spent 682.00 ms on a formula simplification that was a NOOP. DAG size: 322
[2020-08-21 20:44:56,730 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 20:44:56,739 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:44:57,009 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 20:44:57,010 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475074176]
[2020-08-21 20:44:57,010 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 20:44:57,011 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-08-21 20:44:57,011 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547911628]
[2020-08-21 20:44:57,014 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-08-21 20:44:57,014 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 20:44:57,015 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-08-21 20:44:57,015 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-08-21 20:44:57,015 INFO  L87              Difference]: Start difference. First operand 1481 states and 2263 transitions. Second operand 4 states.
[2020-08-21 20:44:57,714 WARN  L193               SmtUtils]: Spent 638.00 ms on a formula simplification that was a NOOP. DAG size: 323
[2020-08-21 20:45:03,786 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 20:45:03,787 INFO  L93              Difference]: Finished difference Result 2844 states and 4401 transitions.
[2020-08-21 20:45:03,789 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-08-21 20:45:03,789 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 327
[2020-08-21 20:45:03,790 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 20:45:03,809 INFO  L225             Difference]: With dead ends: 2844
[2020-08-21 20:45:03,810 INFO  L226             Difference]: Without dead ends: 2425
[2020-08-21 20:45:03,818 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-08-21 20:45:03,823 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2425 states.
[2020-08-21 20:45:03,913 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2423.
[2020-08-21 20:45:03,915 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2423 states.
[2020-08-21 20:45:03,930 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 3727 transitions.
[2020-08-21 20:45:03,931 INFO  L78                 Accepts]: Start accepts. Automaton has 2423 states and 3727 transitions. Word has length 327
[2020-08-21 20:45:03,932 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 20:45:03,932 INFO  L479      AbstractCegarLoop]: Abstraction has 2423 states and 3727 transitions.
[2020-08-21 20:45:03,932 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-08-21 20:45:03,933 INFO  L276                IsEmpty]: Start isEmpty. Operand 2423 states and 3727 transitions.
[2020-08-21 20:45:03,945 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 328
[2020-08-21 20:45:03,950 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 20:45:03,950 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]
[2020-08-21 20:45:03,951 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-08-21 20:45:03,956 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 20:45:03,956 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 20:45:03,957 INFO  L82        PathProgramCache]: Analyzing trace with hash -586459585, now seen corresponding path program 1 times
[2020-08-21 20:45:03,957 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 20:45:03,958 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60260220]
[2020-08-21 20:45:03,959 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 20:45:04,157 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:45:04,831 WARN  L193               SmtUtils]: Spent 475.00 ms on a formula simplification that was a NOOP. DAG size: 322
[2020-08-21 20:45:04,832 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 20:45:04,838 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:45:05,001 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 20:45:05,002 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60260220]
[2020-08-21 20:45:05,002 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 20:45:05,002 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-08-21 20:45:05,003 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256691456]
[2020-08-21 20:45:05,003 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-08-21 20:45:05,004 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 20:45:05,004 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-08-21 20:45:05,004 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-08-21 20:45:05,004 INFO  L87              Difference]: Start difference. First operand 2423 states and 3727 transitions. Second operand 4 states.
[2020-08-21 20:45:05,510 WARN  L193               SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 323
[2020-08-21 20:45:11,379 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 20:45:11,379 INFO  L93              Difference]: Finished difference Result 5038 states and 7854 transitions.
[2020-08-21 20:45:11,380 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-08-21 20:45:11,380 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 327
[2020-08-21 20:45:11,381 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 20:45:11,402 INFO  L225             Difference]: With dead ends: 5038
[2020-08-21 20:45:11,402 INFO  L226             Difference]: Without dead ends: 4361
[2020-08-21 20:45:11,405 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-08-21 20:45:11,410 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4361 states.
[2020-08-21 20:45:11,514 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4361 to 4359.
[2020-08-21 20:45:11,515 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4359 states.
[2020-08-21 20:45:11,528 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 6733 transitions.
[2020-08-21 20:45:11,528 INFO  L78                 Accepts]: Start accepts. Automaton has 4359 states and 6733 transitions. Word has length 327
[2020-08-21 20:45:11,529 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 20:45:11,529 INFO  L479      AbstractCegarLoop]: Abstraction has 4359 states and 6733 transitions.
[2020-08-21 20:45:11,529 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-08-21 20:45:11,529 INFO  L276                IsEmpty]: Start isEmpty. Operand 4359 states and 6733 transitions.
[2020-08-21 20:45:11,542 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 328
[2020-08-21 20:45:11,542 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 20:45:11,543 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]
[2020-08-21 20:45:11,543 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-08-21 20:45:11,543 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 20:45:11,544 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 20:45:11,544 INFO  L82        PathProgramCache]: Analyzing trace with hash -586798209, now seen corresponding path program 1 times
[2020-08-21 20:45:11,545 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 20:45:11,545 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769943684]
[2020-08-21 20:45:11,545 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 20:45:11,898 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:45:12,534 WARN  L193               SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 322
[2020-08-21 20:45:12,535 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 20:45:12,545 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:45:12,805 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 20:45:12,806 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769943684]
[2020-08-21 20:45:12,806 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 20:45:12,806 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-08-21 20:45:12,806 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5717025]
[2020-08-21 20:45:12,807 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-08-21 20:45:12,807 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 20:45:12,807 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-08-21 20:45:12,808 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-08-21 20:45:12,808 INFO  L87              Difference]: Start difference. First operand 4359 states and 6733 transitions. Second operand 5 states.
[2020-08-21 20:45:21,416 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 20:45:21,417 INFO  L93              Difference]: Finished difference Result 12898 states and 19904 transitions.
[2020-08-21 20:45:21,420 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-08-21 20:45:21,420 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 327
[2020-08-21 20:45:21,421 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 20:45:21,458 INFO  L225             Difference]: With dead ends: 12898
[2020-08-21 20:45:21,458 INFO  L226             Difference]: Without dead ends: 8554
[2020-08-21 20:45:21,468 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
[2020-08-21 20:45:21,476 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8554 states.
[2020-08-21 20:45:21,733 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8554 to 8347.
[2020-08-21 20:45:21,734 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 8347 states.
[2020-08-21 20:45:21,753 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8347 states to 8347 states and 12864 transitions.
[2020-08-21 20:45:21,754 INFO  L78                 Accepts]: Start accepts. Automaton has 8347 states and 12864 transitions. Word has length 327
[2020-08-21 20:45:21,754 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 20:45:21,754 INFO  L479      AbstractCegarLoop]: Abstraction has 8347 states and 12864 transitions.
[2020-08-21 20:45:21,755 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-08-21 20:45:21,755 INFO  L276                IsEmpty]: Start isEmpty. Operand 8347 states and 12864 transitions.
[2020-08-21 20:45:21,775 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 330
[2020-08-21 20:45:21,775 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 20:45:21,776 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]
[2020-08-21 20:45:21,776 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-08-21 20:45:21,776 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 20:45:21,778 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 20:45:21,778 INFO  L82        PathProgramCache]: Analyzing trace with hash 318218777, now seen corresponding path program 1 times
[2020-08-21 20:45:21,778 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 20:45:21,779 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226558022]
[2020-08-21 20:45:21,779 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 20:45:21,889 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:45:22,462 WARN  L193               SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 322
[2020-08-21 20:45:22,464 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 20:45:22,469 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:45:22,613 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 20:45:22,614 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226558022]
[2020-08-21 20:45:22,614 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 20:45:22,614 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-08-21 20:45:22,615 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872195220]
[2020-08-21 20:45:22,615 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-08-21 20:45:22,615 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 20:45:22,616 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-08-21 20:45:22,616 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-08-21 20:45:22,616 INFO  L87              Difference]: Start difference. First operand 8347 states and 12864 transitions. Second operand 4 states.
[2020-08-21 20:45:32,991 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 20:45:32,992 INFO  L93              Difference]: Finished difference Result 24596 states and 37840 transitions.
[2020-08-21 20:45:32,992 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-08-21 20:45:32,992 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 329
[2020-08-21 20:45:32,993 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 20:45:33,048 INFO  L225             Difference]: With dead ends: 24596
[2020-08-21 20:45:33,049 INFO  L226             Difference]: Without dead ends: 16378
[2020-08-21 20:45:33,066 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
[2020-08-21 20:45:33,082 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16378 states.
[2020-08-21 20:45:33,483 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16378 to 16171.
[2020-08-21 20:45:33,483 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 16171 states.
[2020-08-21 20:45:33,508 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16171 states to 16171 states and 24823 transitions.
[2020-08-21 20:45:33,509 INFO  L78                 Accepts]: Start accepts. Automaton has 16171 states and 24823 transitions. Word has length 329
[2020-08-21 20:45:33,509 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 20:45:33,509 INFO  L479      AbstractCegarLoop]: Abstraction has 16171 states and 24823 transitions.
[2020-08-21 20:45:33,509 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-08-21 20:45:33,509 INFO  L276                IsEmpty]: Start isEmpty. Operand 16171 states and 24823 transitions.
[2020-08-21 20:45:33,545 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 330
[2020-08-21 20:45:33,545 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 20:45:33,545 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]
[2020-08-21 20:45:33,547 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-08-21 20:45:33,550 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 20:45:33,551 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 20:45:33,551 INFO  L82        PathProgramCache]: Analyzing trace with hash -1871319948, now seen corresponding path program 1 times
[2020-08-21 20:45:33,551 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 20:45:33,551 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948233890]
[2020-08-21 20:45:33,552 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 20:45:33,596 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:45:34,142 WARN  L193               SmtUtils]: Spent 469.00 ms on a formula simplification that was a NOOP. DAG size: 322
[2020-08-21 20:45:34,144 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 20:45:34,150 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:45:34,237 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 20:45:34,237 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948233890]
[2020-08-21 20:45:34,238 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 20:45:34,238 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-08-21 20:45:34,238 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002926978]
[2020-08-21 20:45:34,239 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-08-21 20:45:34,239 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 20:45:34,239 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-08-21 20:45:34,239 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-08-21 20:45:34,240 INFO  L87              Difference]: Start difference. First operand 16171 states and 24823 transitions. Second operand 4 states.