/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_8-2.c
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This is Ultimate 0.1.25-5644d1e-m
[2020-08-18 21:05:47,301 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-08-18 21:05:47,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-08-18 21:05:47,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-08-18 21:05:47,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-08-18 21:05:47,337 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-08-18 21:05:47,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-08-18 21:05:47,343 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-08-18 21:05:47,346 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-08-18 21:05:47,347 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-08-18 21:05:47,354 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-08-18 21:05:47,357 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-08-18 21:05:47,357 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-08-18 21:05:47,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-08-18 21:05:47,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-08-18 21:05:47,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-08-18 21:05:47,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-08-18 21:05:47,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-08-18 21:05:47,370 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-08-18 21:05:47,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-08-18 21:05:47,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-08-18 21:05:47,381 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-08-18 21:05:47,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-08-18 21:05:47,386 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-08-18 21:05:47,391 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-08-18 21:05:47,391 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-08-18 21:05:47,391 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-08-18 21:05:47,392 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-08-18 21:05:47,395 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-08-18 21:05:47,397 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-08-18 21:05:47,398 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-08-18 21:05:47,399 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-08-18 21:05:47,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-08-18 21:05:47,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-08-18 21:05:47,413 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-08-18 21:05:47,413 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-08-18 21:05:47,414 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-08-18 21:05:47,414 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-08-18 21:05:47,414 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-08-18 21:05:47,415 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-08-18 21:05:47,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-08-18 21:05:47,418 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
[2020-08-18 21:05:47,456 INFO L113 SettingsManager]: Loading preferences was successful
[2020-08-18 21:05:47,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-08-18 21:05:47,459 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-08-18 21:05:47,459 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-08-18 21:05:47,459 INFO L138 SettingsManager]: * Use SBE=true
[2020-08-18 21:05:47,460 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-08-18 21:05:47,460 INFO L138 SettingsManager]: * sizeof long=4
[2020-08-18 21:05:47,460 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-08-18 21:05:47,460 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-08-18 21:05:47,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-08-18 21:05:47,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-08-18 21:05:47,462 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-08-18 21:05:47,462 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-08-18 21:05:47,463 INFO L138 SettingsManager]: * sizeof long double=12
[2020-08-18 21:05:47,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-08-18 21:05:47,463 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-08-18 21:05:47,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-08-18 21:05:47,464 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-08-18 21:05:47,464 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-08-18 21:05:47,464 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-08-18 21:05:47,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-08-18 21:05:47,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-18 21:05:47,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-08-18 21:05:47,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-08-18 21:05:47,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-08-18 21:05:47,465 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-08-18 21:05:47,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-08-18 21:05:47,466 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-08-18 21:05:47,466 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-08-18 21:05:47,466 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=5;interpolation-heuristic=DEEPEST;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST;
[2020-08-18 21:05:47,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-08-18 21:05:47,783 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-08-18 21:05:47,787 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-08-18 21:05:47,789 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-08-18 21:05:47,789 INFO L275 PluginConnector]: CDTParser initialized
[2020-08-18 21:05:47,790 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_8-2.c
[2020-08-18 21:05:47,859 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2007f6013/3df8136dda1b4639ad7ba100778e0e4a/FLAG4881f4b20
[2020-08-18 21:05:48,350 INFO L306 CDTParser]: Found 1 translation units.
[2020-08-18 21:05:48,350 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_8-2.c
[2020-08-18 21:05:48,357 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2007f6013/3df8136dda1b4639ad7ba100778e0e4a/FLAG4881f4b20
[2020-08-18 21:05:48,757 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2007f6013/3df8136dda1b4639ad7ba100778e0e4a
[2020-08-18 21:05:48,768 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-08-18 21:05:48,770 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-08-18 21:05:48,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-08-18 21:05:48,774 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-08-18 21:05:48,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-08-18 21:05:48,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:05:48" (1/1) ...
[2020-08-18 21:05:48,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f3eacf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:05:48, skipping insertion in model container
[2020-08-18 21:05:48,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:05:48" (1/1) ...
[2020-08-18 21:05:48,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-08-18 21:05:48,813 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-08-18 21:05:48,981 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-08-18 21:05:48,985 INFO L203 MainTranslator]: Completed pre-run
[2020-08-18 21:05:49,003 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-08-18 21:05:49,017 INFO L208 MainTranslator]: Completed translation
[2020-08-18 21:05:49,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:05:49 WrapperNode
[2020-08-18 21:05:49,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-08-18 21:05:49,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-08-18 21:05:49,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-08-18 21:05:49,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-08-18 21:05:49,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:05:49" (1/1) ...
[2020-08-18 21:05:49,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:05:49" (1/1) ...
[2020-08-18 21:05:49,114 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:05:49" (1/1) ...
[2020-08-18 21:05:49,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:05:49" (1/1) ...
[2020-08-18 21:05:49,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:05:49" (1/1) ...
[2020-08-18 21:05:49,123 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:05:49" (1/1) ...
[2020-08-18 21:05:49,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:05:49" (1/1) ...
[2020-08-18 21:05:49,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-08-18 21:05:49,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-08-18 21:05:49,131 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-08-18 21:05:49,131 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-08-18 21:05:49,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:05:49" (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
[2020-08-18 21:05:49,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-08-18 21:05:49,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-08-18 21:05:49,195 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1
[2020-08-18 21:05:49,195 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2
[2020-08-18 21:05:49,195 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-08-18 21:05:49,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-08-18 21:05:49,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-08-18 21:05:49,196 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1
[2020-08-18 21:05:49,196 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2
[2020-08-18 21:05:49,196 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-08-18 21:05:49,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-08-18 21:05:49,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-08-18 21:05:49,401 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-08-18 21:05:49,402 INFO L295 CfgBuilder]: Removed 0 assume(true) statements.
[2020-08-18 21:05:49,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:05:49 BoogieIcfgContainer
[2020-08-18 21:05:49,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-08-18 21:05:49,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-08-18 21:05:49,409 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-08-18 21:05:49,413 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-08-18 21:05:49,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 09:05:48" (1/3) ...
[2020-08-18 21:05:49,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a797ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:05:49, skipping insertion in model container
[2020-08-18 21:05:49,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:05:49" (2/3) ...
[2020-08-18 21:05:49,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a797ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:05:49, skipping insertion in model container
[2020-08-18 21:05:49,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:05:49" (3/3) ...
[2020-08-18 21:05:49,417 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-2.c
[2020-08-18 21:05:49,429 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-08-18 21:05:49,441 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-08-18 21:05:49,488 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-08-18 21:05:49,544 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-08-18 21:05:49,544 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-08-18 21:05:49,544 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-08-18 21:05:49,544 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-08-18 21:05:49,544 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-08-18 21:05:49,545 INFO L380 AbstractCegarLoop]: Difference is false
[2020-08-18 21:05:49,545 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-08-18 21:05:49,545 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-08-18 21:05:49,566 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states.
[2020-08-18 21:05:49,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-08-18 21:05:49,572 INFO L414 BasicCegarLoop]: Found error trace
[2020-08-18 21:05:49,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 21:05:49,574 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:05:49,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:05:49,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1464461757, now seen corresponding path program 1 times
[2020-08-18 21:05:49,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:05:49,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815588841]
[2020-08-18 21:05:49,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:05:49,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:49,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 21:05:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:49,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-08-18 21:05:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:49,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 21:05:49,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815588841]
[2020-08-18 21:05:49,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 21:05:49,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-08-18 21:05:49,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722996291]
[2020-08-18 21:05:49,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-08-18 21:05:49,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 21:05:49,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-08-18 21:05:49,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-08-18 21:05:49,841 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states.
[2020-08-18 21:05:49,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 21:05:49,960 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions.
[2020-08-18 21:05:49,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2020-08-18 21:05:49,962 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13
[2020-08-18 21:05:49,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 21:05:49,974 INFO L225 Difference]: With dead ends: 44
[2020-08-18 21:05:49,975 INFO L226 Difference]: Without dead ends: 30
[2020-08-18 21:05:49,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-08-18 21:05:49,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2020-08-18 21:05:50,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30.
[2020-08-18 21:05:50,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2020-08-18 21:05:50,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions.
[2020-08-18 21:05:50,027 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13
[2020-08-18 21:05:50,028 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-08-18 21:05:50,028 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions.
[2020-08-18 21:05:50,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-08-18 21:05:50,029 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions.
[2020-08-18 21:05:50,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-08-18 21:05:50,031 INFO L414 BasicCegarLoop]: Found error trace
[2020-08-18 21:05:50,031 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 21:05:50,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-08-18 21:05:50,032 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:05:50,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:05:50,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1134800479, now seen corresponding path program 1 times
[2020-08-18 21:05:50,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:05:50,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354402084]
[2020-08-18 21:05:50,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:05:50,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:50,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 21:05:50,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:50,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-08-18 21:05:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:50,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 21:05:50,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354402084]
[2020-08-18 21:05:50,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 21:05:50,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-08-18 21:05:50,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633417832]
[2020-08-18 21:05:50,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-08-18 21:05:50,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 21:05:50,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-08-18 21:05:50,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-08-18 21:05:50,103 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 5 states.
[2020-08-18 21:05:50,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 21:05:50,192 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions.
[2020-08-18 21:05:50,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2020-08-18 21:05:50,193 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14
[2020-08-18 21:05:50,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 21:05:50,195 INFO L225 Difference]: With dead ends: 36
[2020-08-18 21:05:50,195 INFO L226 Difference]: Without dead ends: 32
[2020-08-18 21:05:50,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-08-18 21:05:50,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2020-08-18 21:05:50,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30.
[2020-08-18 21:05:50,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2020-08-18 21:05:50,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions.
[2020-08-18 21:05:50,206 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14
[2020-08-18 21:05:50,207 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-08-18 21:05:50,207 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions.
[2020-08-18 21:05:50,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-08-18 21:05:50,207 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions.
[2020-08-18 21:05:50,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2020-08-18 21:05:50,209 INFO L414 BasicCegarLoop]: Found error trace
[2020-08-18 21:05:50,209 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 21:05:50,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-08-18 21:05:50,210 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:05:50,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:05:50,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1592795560, now seen corresponding path program 1 times
[2020-08-18 21:05:50,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:05:50,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423454122]
[2020-08-18 21:05:50,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:05:50,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:50,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 21:05:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:50,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-08-18 21:05:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:50,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:50,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 21:05:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:50,336 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-08-18 21:05:50,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423454122]
[2020-08-18 21:05:50,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-08-18 21:05:50,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-08-18 21:05:50,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473357316]
[2020-08-18 21:05:50,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-08-18 21:05:50,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 21:05:50,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-08-18 21:05:50,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2020-08-18 21:05:50,339 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 7 states.
[2020-08-18 21:05:50,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 21:05:50,436 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions.
[2020-08-18 21:05:50,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2020-08-18 21:05:50,437 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26
[2020-08-18 21:05:50,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 21:05:50,438 INFO L225 Difference]: With dead ends: 58
[2020-08-18 21:05:50,438 INFO L226 Difference]: Without dead ends: 34
[2020-08-18 21:05:50,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2020-08-18 21:05:50,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states.
[2020-08-18 21:05:50,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32.
[2020-08-18 21:05:50,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2020-08-18 21:05:50,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions.
[2020-08-18 21:05:50,450 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 26
[2020-08-18 21:05:50,451 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-08-18 21:05:50,451 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions.
[2020-08-18 21:05:50,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-08-18 21:05:50,451 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions.
[2020-08-18 21:05:50,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-08-18 21:05:50,453 INFO L414 BasicCegarLoop]: Found error trace
[2020-08-18 21:05:50,454 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 21:05:50,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-08-18 21:05:50,454 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:05:50,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:05:50,455 INFO L82 PathProgramCache]: Analyzing trace with hash 746633022, now seen corresponding path program 1 times
[2020-08-18 21:05:50,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:05:50,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222167051]
[2020-08-18 21:05:50,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:05:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:50,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 21:05:50,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:50,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-08-18 21:05:50,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:50,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:50,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:50,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:50,568 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-08-18 21:05:50,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [222167051]
[2020-08-18 21:05:50,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-08-18 21:05:50,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-08-18 21:05:50,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354739835]
[2020-08-18 21:05:50,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-08-18 21:05:50,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 21:05:50,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-08-18 21:05:50,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2020-08-18 21:05:50,572 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 7 states.
[2020-08-18 21:05:50,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 21:05:50,839 INFO L93 Difference]: Finished difference Result 54 states and 74 transitions.
[2020-08-18 21:05:50,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2020-08-18 21:05:50,841 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27
[2020-08-18 21:05:50,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 21:05:50,849 INFO L225 Difference]: With dead ends: 54
[2020-08-18 21:05:50,849 INFO L226 Difference]: Without dead ends: 50
[2020-08-18 21:05:50,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72
[2020-08-18 21:05:50,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2020-08-18 21:05:50,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48.
[2020-08-18 21:05:50,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states.
[2020-08-18 21:05:50,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 65 transitions.
[2020-08-18 21:05:50,883 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 65 transitions. Word has length 27
[2020-08-18 21:05:50,883 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-08-18 21:05:50,885 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 65 transitions.
[2020-08-18 21:05:50,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-08-18 21:05:50,885 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 65 transitions.
[2020-08-18 21:05:50,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2020-08-18 21:05:50,887 INFO L414 BasicCegarLoop]: Found error trace
[2020-08-18 21:05:50,888 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 21:05:50,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-08-18 21:05:50,890 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:05:50,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:05:50,891 INFO L82 PathProgramCache]: Analyzing trace with hash 986908919, now seen corresponding path program 1 times
[2020-08-18 21:05:50,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:05:50,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90709338]
[2020-08-18 21:05:50,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:05:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:50,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 21:05:50,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:50,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-08-18 21:05:50,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:50,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:51,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:51,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:51,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 21:05:51,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:51,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2020-08-18 21:05:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:51,048 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2020-08-18 21:05:51,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90709338]
[2020-08-18 21:05:51,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-08-18 21:05:51,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6
[2020-08-18 21:05:51,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883588371]
[2020-08-18 21:05:51,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-08-18 21:05:51,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 21:05:51,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-08-18 21:05:51,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2020-08-18 21:05:51,051 INFO L87 Difference]: Start difference. First operand 48 states and 65 transitions. Second operand 6 states.
[2020-08-18 21:05:51,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 21:05:51,134 INFO L93 Difference]: Finished difference Result 94 states and 142 transitions.
[2020-08-18 21:05:51,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-08-18 21:05:51,134 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39
[2020-08-18 21:05:51,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 21:05:51,137 INFO L225 Difference]: With dead ends: 94
[2020-08-18 21:05:51,137 INFO L226 Difference]: Without dead ends: 52
[2020-08-18 21:05:51,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-08-18 21:05:51,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states.
[2020-08-18 21:05:51,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52.
[2020-08-18 21:05:51,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states.
[2020-08-18 21:05:51,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions.
[2020-08-18 21:05:51,151 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 39
[2020-08-18 21:05:51,152 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-08-18 21:05:51,152 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions.
[2020-08-18 21:05:51,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-08-18 21:05:51,152 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions.
[2020-08-18 21:05:51,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41
[2020-08-18 21:05:51,154 INFO L414 BasicCegarLoop]: Found error trace
[2020-08-18 21:05:51,154 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 21:05:51,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-08-18 21:05:51,155 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:05:51,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:05:51,155 INFO L82 PathProgramCache]: Analyzing trace with hash -2100495745, now seen corresponding path program 1 times
[2020-08-18 21:05:51,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:05:51,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551282738]
[2020-08-18 21:05:51,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:05:51,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:51,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 21:05:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:51,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-08-18 21:05:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:51,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:51,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:51,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:51,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:51,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:51,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:05:51,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:51,359 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2020-08-18 21:05:51,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551282738]
[2020-08-18 21:05:51,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-08-18 21:05:51,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-08-18 21:05:51,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240021671]
[2020-08-18 21:05:51,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-08-18 21:05:51,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 21:05:51,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-08-18 21:05:51,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2020-08-18 21:05:51,362 INFO L87 Difference]: Start difference. First operand 52 states and 71 transitions. Second operand 8 states.
[2020-08-18 21:05:51,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 21:05:51,511 INFO L93 Difference]: Finished difference Result 103 states and 158 transitions.
[2020-08-18 21:05:51,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2020-08-18 21:05:51,512 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40
[2020-08-18 21:05:51,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 21:05:51,516 INFO L225 Difference]: With dead ends: 103
[2020-08-18 21:05:51,516 INFO L226 Difference]: Without dead ends: 57
[2020-08-18 21:05:51,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2020-08-18 21:05:51,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2020-08-18 21:05:51,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54.
[2020-08-18 21:05:51,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states.
[2020-08-18 21:05:51,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 74 transitions.
[2020-08-18 21:05:51,544 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 74 transitions. Word has length 40
[2020-08-18 21:05:51,547 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-08-18 21:05:51,547 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 74 transitions.
[2020-08-18 21:05:51,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-08-18 21:05:51,547 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 74 transitions.
[2020-08-18 21:05:51,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2020-08-18 21:05:51,553 INFO L414 BasicCegarLoop]: Found error trace
[2020-08-18 21:05:51,554 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 21:05:51,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-08-18 21:05:51,557 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:05:51,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:05:51,558 INFO L82 PathProgramCache]: Analyzing trace with hash 208191613, now seen corresponding path program 1 times
[2020-08-18 21:05:51,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:05:51,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628712129]
[2020-08-18 21:05:51,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:05:51,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:51,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 21:05:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:51,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-08-18 21:05:51,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:51,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:51,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:51,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:51,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:51,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:51,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:51,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:05:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:51,734 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2020-08-18 21:05:51,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628712129]
[2020-08-18 21:05:51,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-08-18 21:05:51,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-08-18 21:05:51,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291849415]
[2020-08-18 21:05:51,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-08-18 21:05:51,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 21:05:51,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-08-18 21:05:51,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2020-08-18 21:05:51,739 INFO L87 Difference]: Start difference. First operand 54 states and 74 transitions. Second operand 8 states.
[2020-08-18 21:05:51,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 21:05:51,967 INFO L93 Difference]: Finished difference Result 86 states and 126 transitions.
[2020-08-18 21:05:51,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2020-08-18 21:05:51,969 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41
[2020-08-18 21:05:51,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 21:05:51,972 INFO L225 Difference]: With dead ends: 86
[2020-08-18 21:05:51,973 INFO L226 Difference]: Without dead ends: 82
[2020-08-18 21:05:51,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2020-08-18 21:05:51,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states.
[2020-08-18 21:05:52,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79.
[2020-08-18 21:05:52,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states.
[2020-08-18 21:05:52,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 118 transitions.
[2020-08-18 21:05:52,005 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 118 transitions. Word has length 41
[2020-08-18 21:05:52,007 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-08-18 21:05:52,007 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 118 transitions.
[2020-08-18 21:05:52,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-08-18 21:05:52,007 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 118 transitions.
[2020-08-18 21:05:52,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2020-08-18 21:05:52,010 INFO L414 BasicCegarLoop]: Found error trace
[2020-08-18 21:05:52,011 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 21:05:52,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2020-08-18 21:05:52,011 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:05:52,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:05:52,013 INFO L82 PathProgramCache]: Analyzing trace with hash -405677468, now seen corresponding path program 1 times
[2020-08-18 21:05:52,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:05:52,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877153292]
[2020-08-18 21:05:52,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:05:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:52,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 21:05:52,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:52,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-08-18 21:05:52,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:52,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:52,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:52,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:52,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:52,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:52,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:52,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:52,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:05:52,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:52,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2020-08-18 21:05:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:52,161 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2020-08-18 21:05:52,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877153292]
[2020-08-18 21:05:52,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-08-18 21:05:52,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-08-18 21:05:52,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729488175]
[2020-08-18 21:05:52,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-08-18 21:05:52,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 21:05:52,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-08-18 21:05:52,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2020-08-18 21:05:52,164 INFO L87 Difference]: Start difference. First operand 79 states and 118 transitions. Second operand 8 states.
[2020-08-18 21:05:52,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 21:05:52,286 INFO L93 Difference]: Finished difference Result 167 states and 288 transitions.
[2020-08-18 21:05:52,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2020-08-18 21:05:52,289 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54
[2020-08-18 21:05:52,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 21:05:52,290 INFO L225 Difference]: With dead ends: 167
[2020-08-18 21:05:52,291 INFO L226 Difference]: Without dead ends: 94
[2020-08-18 21:05:52,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2020-08-18 21:05:52,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states.
[2020-08-18 21:05:52,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 88.
[2020-08-18 21:05:52,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states.
[2020-08-18 21:05:52,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 134 transitions.
[2020-08-18 21:05:52,323 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 134 transitions. Word has length 54
[2020-08-18 21:05:52,324 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-08-18 21:05:52,324 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 134 transitions.
[2020-08-18 21:05:52,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-08-18 21:05:52,324 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 134 transitions.
[2020-08-18 21:05:52,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56
[2020-08-18 21:05:52,326 INFO L414 BasicCegarLoop]: Found error trace
[2020-08-18 21:05:52,326 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 21:05:52,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2020-08-18 21:05:52,327 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:05:52,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:05:52,327 INFO L82 PathProgramCache]: Analyzing trace with hash -242988780, now seen corresponding path program 1 times
[2020-08-18 21:05:52,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:05:52,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729031261]
[2020-08-18 21:05:52,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:05:52,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:52,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 21:05:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:52,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-08-18 21:05:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:52,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:52,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:52,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:52,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:52,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:05:52,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:52,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:05:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:52,524 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2020-08-18 21:05:52,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729031261]
[2020-08-18 21:05:52,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-08-18 21:05:52,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10
[2020-08-18 21:05:52,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159155598]
[2020-08-18 21:05:52,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-08-18 21:05:52,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 21:05:52,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-08-18 21:05:52,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90
[2020-08-18 21:05:52,530 INFO L87 Difference]: Start difference. First operand 88 states and 134 transitions. Second operand 10 states.
[2020-08-18 21:05:52,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 21:05:52,780 INFO L93 Difference]: Finished difference Result 188 states and 331 transitions.
[2020-08-18 21:05:52,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2020-08-18 21:05:52,781 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55
[2020-08-18 21:05:52,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 21:05:52,784 INFO L225 Difference]: With dead ends: 188
[2020-08-18 21:05:52,785 INFO L226 Difference]: Without dead ends: 109
[2020-08-18 21:05:52,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182
[2020-08-18 21:05:52,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states.
[2020-08-18 21:05:52,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 100.
[2020-08-18 21:05:52,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states.
[2020-08-18 21:05:52,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 158 transitions.
[2020-08-18 21:05:52,820 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 158 transitions. Word has length 55
[2020-08-18 21:05:52,821 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-08-18 21:05:52,821 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 158 transitions.
[2020-08-18 21:05:52,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-08-18 21:05:52,821 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 158 transitions.
[2020-08-18 21:05:52,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83
[2020-08-18 21:05:52,826 INFO L414 BasicCegarLoop]: Found error trace
[2020-08-18 21:05:52,826 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 21:05:52,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2020-08-18 21:05:52,827 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:05:52,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:05:52,827 INFO L82 PathProgramCache]: Analyzing trace with hash -908952008, now seen corresponding path program 2 times
[2020-08-18 21:05:52,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:05:52,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972057729]
[2020-08-18 21:05:52,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:05:52,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:52,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 21:05:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:52,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-08-18 21:05:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:52,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:52,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:52,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:52,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:52,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:52,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:05:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:52,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:05:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:53,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:53,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:53,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:53,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:53,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:53,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:05:53,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:53,073 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 30 proven. 52 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2020-08-18 21:05:53,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972057729]
[2020-08-18 21:05:53,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-08-18 21:05:53,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12
[2020-08-18 21:05:53,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039200654]
[2020-08-18 21:05:53,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-08-18 21:05:53,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 21:05:53,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-08-18 21:05:53,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132
[2020-08-18 21:05:53,077 INFO L87 Difference]: Start difference. First operand 100 states and 158 transitions. Second operand 12 states.
[2020-08-18 21:05:53,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 21:05:53,495 INFO L93 Difference]: Finished difference Result 199 states and 354 transitions.
[2020-08-18 21:05:53,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2020-08-18 21:05:53,496 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82
[2020-08-18 21:05:53,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 21:05:53,498 INFO L225 Difference]: With dead ends: 199
[2020-08-18 21:05:53,498 INFO L226 Difference]: Without dead ends: 86
[2020-08-18 21:05:53,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420
[2020-08-18 21:05:53,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states.
[2020-08-18 21:05:53,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 71.
[2020-08-18 21:05:53,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states.
[2020-08-18 21:05:53,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 93 transitions.
[2020-08-18 21:05:53,510 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 93 transitions. Word has length 82
[2020-08-18 21:05:53,511 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-08-18 21:05:53,511 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 93 transitions.
[2020-08-18 21:05:53,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-08-18 21:05:53,511 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 93 transitions.
[2020-08-18 21:05:53,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111
[2020-08-18 21:05:53,512 INFO L414 BasicCegarLoop]: Found error trace
[2020-08-18 21:05:53,512 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 21:05:53,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2020-08-18 21:05:53,513 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:05:53,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:05:53,513 INFO L82 PathProgramCache]: Analyzing trace with hash -2119203654, now seen corresponding path program 2 times
[2020-08-18 21:05:53,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:05:53,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016213695]
[2020-08-18 21:05:53,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:05:53,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:53,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 21:05:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:53,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-08-18 21:05:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:53,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:53,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:53,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:53,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:53,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:53,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:53,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:53,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:53,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:05:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:53,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:05:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:53,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2020-08-18 21:05:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:53,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:53,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:53,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:53,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:53,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:53,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:53,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:05:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:53,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:05:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:53,739 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 44 proven. 79 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked.
[2020-08-18 21:05:53,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016213695]
[2020-08-18 21:05:53,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-08-18 21:05:53,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10
[2020-08-18 21:05:53,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215044396]
[2020-08-18 21:05:53,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-08-18 21:05:53,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 21:05:53,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-08-18 21:05:53,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90
[2020-08-18 21:05:53,741 INFO L87 Difference]: Start difference. First operand 71 states and 93 transitions. Second operand 10 states.
[2020-08-18 21:05:53,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 21:05:53,949 INFO L93 Difference]: Finished difference Result 142 states and 204 transitions.
[2020-08-18 21:05:53,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2020-08-18 21:05:53,950 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 110
[2020-08-18 21:05:53,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 21:05:53,951 INFO L225 Difference]: With dead ends: 142
[2020-08-18 21:05:53,951 INFO L226 Difference]: Without dead ends: 78
[2020-08-18 21:05:53,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182
[2020-08-18 21:05:53,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states.
[2020-08-18 21:05:53,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78.
[2020-08-18 21:05:53,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states.
[2020-08-18 21:05:53,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions.
[2020-08-18 21:05:53,969 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 110
[2020-08-18 21:05:53,970 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-08-18 21:05:53,970 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions.
[2020-08-18 21:05:53,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-08-18 21:05:53,970 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions.
[2020-08-18 21:05:53,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193
[2020-08-18 21:05:53,974 INFO L414 BasicCegarLoop]: Found error trace
[2020-08-18 21:05:53,975 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 13, 10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 21:05:53,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2020-08-18 21:05:53,975 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:05:53,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:05:53,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1263382818, now seen corresponding path program 3 times
[2020-08-18 21:05:53,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:05:53,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940736995]
[2020-08-18 21:05:53,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:05:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:54,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 21:05:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:54,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-08-18 21:05:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:54,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:54,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:54,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:54,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:54,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:54,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:54,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:54,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:54,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:05:54,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:54,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:05:54,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:54,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:54,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:54,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:54,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:54,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:54,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24
[2020-08-18 21:05:54,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:54,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:54,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:54,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:54,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92
[2020-08-18 21:05:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:54,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:54,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:54,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:54,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:54,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:54,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:54,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:05:54,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:54,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:05:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:54,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:54,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:54,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:54,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:54,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:54,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:54,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24
[2020-08-18 21:05:54,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:54,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:54,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:54,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:54,499 INFO L134 CoverageAnalysis]: Checked inductivity of 999 backedges. 133 proven. 373 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked.
[2020-08-18 21:05:54,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940736995]
[2020-08-18 21:05:54,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-08-18 21:05:54,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15
[2020-08-18 21:05:54,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857556013]
[2020-08-18 21:05:54,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-08-18 21:05:54,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 21:05:54,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-08-18 21:05:54,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210
[2020-08-18 21:05:54,503 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand 15 states.
[2020-08-18 21:05:55,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 21:05:55,114 INFO L93 Difference]: Finished difference Result 184 states and 282 transitions.
[2020-08-18 21:05:55,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2020-08-18 21:05:55,114 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 192
[2020-08-18 21:05:55,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 21:05:55,117 INFO L225 Difference]: With dead ends: 184
[2020-08-18 21:05:55,117 INFO L226 Difference]: Without dead ends: 111
[2020-08-18 21:05:55,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=675, Unknown=0, NotChecked=0, Total=812
[2020-08-18 21:05:55,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states.
[2020-08-18 21:05:55,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99.
[2020-08-18 21:05:55,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states.
[2020-08-18 21:05:55,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 133 transitions.
[2020-08-18 21:05:55,129 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 133 transitions. Word has length 192
[2020-08-18 21:05:55,129 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-08-18 21:05:55,129 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 133 transitions.
[2020-08-18 21:05:55,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-08-18 21:05:55,130 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 133 transitions.
[2020-08-18 21:05:55,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137
[2020-08-18 21:05:55,132 INFO L414 BasicCegarLoop]: Found error trace
[2020-08-18 21:05:55,132 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 8, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 21:05:55,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2020-08-18 21:05:55,132 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:05:55,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:05:55,133 INFO L82 PathProgramCache]: Analyzing trace with hash -2102107778, now seen corresponding path program 1 times
[2020-08-18 21:05:55,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:05:55,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362551800]
[2020-08-18 21:05:55,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:05:55,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:55,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 21:05:55,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:55,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-08-18 21:05:55,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:55,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:55,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:55,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:55,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:55,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:55,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:55,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:55,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:55,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:55,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:05:55,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:55,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:05:55,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:55,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:55,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:55,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:55,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:55,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2020-08-18 21:05:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:55,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:55,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:55,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:55,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91
[2020-08-18 21:05:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:55,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:55,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:55,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:55,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:55,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:05:55,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:55,418 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 109 proven. 85 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked.
[2020-08-18 21:05:55,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362551800]
[2020-08-18 21:05:55,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-08-18 21:05:55,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11
[2020-08-18 21:05:55,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355637981]
[2020-08-18 21:05:55,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-08-18 21:05:55,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 21:05:55,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-08-18 21:05:55,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110
[2020-08-18 21:05:55,422 INFO L87 Difference]: Start difference. First operand 99 states and 133 transitions. Second operand 11 states.
[2020-08-18 21:05:55,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 21:05:55,757 INFO L93 Difference]: Finished difference Result 188 states and 266 transitions.
[2020-08-18 21:05:55,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2020-08-18 21:05:55,758 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 136
[2020-08-18 21:05:55,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 21:05:55,760 INFO L225 Difference]: With dead ends: 188
[2020-08-18 21:05:55,760 INFO L226 Difference]: Without dead ends: 101
[2020-08-18 21:05:55,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272
[2020-08-18 21:05:55,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states.
[2020-08-18 21:05:55,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 98.
[2020-08-18 21:05:55,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states.
[2020-08-18 21:05:55,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 130 transitions.
[2020-08-18 21:05:55,777 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 130 transitions. Word has length 136
[2020-08-18 21:05:55,778 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-08-18 21:05:55,778 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 130 transitions.
[2020-08-18 21:05:55,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-08-18 21:05:55,779 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 130 transitions.
[2020-08-18 21:05:55,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178
[2020-08-18 21:05:55,781 INFO L414 BasicCegarLoop]: Found error trace
[2020-08-18 21:05:55,781 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 11, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 21:05:55,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2020-08-18 21:05:55,782 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:05:55,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:05:55,783 INFO L82 PathProgramCache]: Analyzing trace with hash 677703633, now seen corresponding path program 2 times
[2020-08-18 21:05:55,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:05:55,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666349484]
[2020-08-18 21:05:55,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:05:55,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:55,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 21:05:55,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:55,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-08-18 21:05:55,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:55,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:55,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:55,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:55,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:55,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:55,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:55,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:55,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:55,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:55,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:56,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:05:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:56,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:05:56,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:56,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:56,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:56,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:56,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:56,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2020-08-18 21:05:56,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:56,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:56,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:56,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:56,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:56,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:56,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:05:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:56,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:05:56,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:56,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:56,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:56,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:56,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132
[2020-08-18 21:05:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:56,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:56,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:56,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:56,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:56,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:56,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:05:56,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:56,254 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 138 proven. 250 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked.
[2020-08-18 21:05:56,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666349484]
[2020-08-18 21:05:56,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-08-18 21:05:56,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14
[2020-08-18 21:05:56,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836381699]
[2020-08-18 21:05:56,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states
[2020-08-18 21:05:56,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 21:05:56,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-08-18 21:05:56,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182
[2020-08-18 21:05:56,257 INFO L87 Difference]: Start difference. First operand 98 states and 130 transitions. Second operand 14 states.
[2020-08-18 21:05:56,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 21:05:56,847 INFO L93 Difference]: Finished difference Result 224 states and 343 transitions.
[2020-08-18 21:05:56,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2020-08-18 21:05:56,848 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 177
[2020-08-18 21:05:56,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 21:05:56,851 INFO L225 Difference]: With dead ends: 224
[2020-08-18 21:05:56,851 INFO L226 Difference]: Without dead ends: 131
[2020-08-18 21:05:56,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=625, Unknown=0, NotChecked=0, Total=756
[2020-08-18 21:05:56,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states.
[2020-08-18 21:05:56,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 114.
[2020-08-18 21:05:56,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states.
[2020-08-18 21:05:56,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 154 transitions.
[2020-08-18 21:05:56,865 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 154 transitions. Word has length 177
[2020-08-18 21:05:56,865 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-08-18 21:05:56,865 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 154 transitions.
[2020-08-18 21:05:56,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states.
[2020-08-18 21:05:56,866 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 154 transitions.
[2020-08-18 21:05:56,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178
[2020-08-18 21:05:56,868 INFO L414 BasicCegarLoop]: Found error trace
[2020-08-18 21:05:56,869 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 21:05:56,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2020-08-18 21:05:56,869 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:05:56,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:05:56,870 INFO L82 PathProgramCache]: Analyzing trace with hash 307857833, now seen corresponding path program 3 times
[2020-08-18 21:05:56,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:05:56,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594187360]
[2020-08-18 21:05:56,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:05:56,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:56,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 21:05:56,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:56,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-08-18 21:05:56,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:56,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:57,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:57,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:57,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:57,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:57,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:57,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:57,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:57,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:57,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:57,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:57,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:05:57,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:57,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:05:57,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:57,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:57,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:57,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:57,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:57,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2020-08-18 21:05:57,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:57,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:57,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:57,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:57,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:57,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:57,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:05:57,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:57,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105
[2020-08-18 21:05:57,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:57,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:57,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:57,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:57,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:57,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:57,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:05:57,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:57,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:05:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:57,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:57,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:57,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:57,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:57,231 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 45 proven. 260 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked.
[2020-08-18 21:05:57,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594187360]
[2020-08-18 21:05:57,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-08-18 21:05:57,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11
[2020-08-18 21:05:57,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629871862]
[2020-08-18 21:05:57,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-08-18 21:05:57,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 21:05:57,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-08-18 21:05:57,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110
[2020-08-18 21:05:57,234 INFO L87 Difference]: Start difference. First operand 114 states and 154 transitions. Second operand 11 states.
[2020-08-18 21:05:57,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 21:05:57,574 INFO L93 Difference]: Finished difference Result 244 states and 371 transitions.
[2020-08-18 21:05:57,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2020-08-18 21:05:57,575 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 177
[2020-08-18 21:05:57,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 21:05:57,579 INFO L225 Difference]: With dead ends: 244
[2020-08-18 21:05:57,579 INFO L226 Difference]: Without dead ends: 240
[2020-08-18 21:05:57,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272
[2020-08-18 21:05:57,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states.
[2020-08-18 21:05:57,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 220.
[2020-08-18 21:05:57,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states.
[2020-08-18 21:05:57,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 331 transitions.
[2020-08-18 21:05:57,611 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 331 transitions. Word has length 177
[2020-08-18 21:05:57,612 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-08-18 21:05:57,612 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 331 transitions.
[2020-08-18 21:05:57,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-08-18 21:05:57,612 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 331 transitions.
[2020-08-18 21:05:57,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381
[2020-08-18 21:05:57,620 INFO L414 BasicCegarLoop]: Found error trace
[2020-08-18 21:05:57,620 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 26, 26, 22, 21, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 8, 8, 8, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 21:05:57,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14
[2020-08-18 21:05:57,621 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:05:57,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:05:57,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1635105538, now seen corresponding path program 4 times
[2020-08-18 21:05:57,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:05:57,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665314092]
[2020-08-18 21:05:57,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:05:57,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:57,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 21:05:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:57,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-08-18 21:05:57,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:57,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:57,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:57,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:58,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:05:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:05:58,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2020-08-18 21:05:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:58,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91
[2020-08-18 21:05:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:58,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:58,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:58,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:05:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:05:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2020-08-18 21:05:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186
[2020-08-18 21:05:58,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:05:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:05:58,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:58,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2020-08-18 21:05:58,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:58,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:58,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91
[2020-08-18 21:05:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:58,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:05:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:05:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2020-08-18 21:05:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:58,605 INFO L134 CoverageAnalysis]: Checked inductivity of 4041 backedges. 201 proven. 576 refuted. 0 times theorem prover too weak. 3264 trivial. 0 not checked.
[2020-08-18 21:05:58,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665314092]
[2020-08-18 21:05:58,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-08-18 21:05:58,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11
[2020-08-18 21:05:58,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447809512]
[2020-08-18 21:05:58,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-08-18 21:05:58,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 21:05:58,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-08-18 21:05:58,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110
[2020-08-18 21:05:58,608 INFO L87 Difference]: Start difference. First operand 220 states and 331 transitions. Second operand 11 states.
[2020-08-18 21:05:58,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 21:05:58,900 INFO L93 Difference]: Finished difference Result 429 states and 677 transitions.
[2020-08-18 21:05:58,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2020-08-18 21:05:58,901 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 380
[2020-08-18 21:05:58,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 21:05:58,904 INFO L225 Difference]: With dead ends: 429
[2020-08-18 21:05:58,904 INFO L226 Difference]: Without dead ends: 225
[2020-08-18 21:05:58,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272
[2020-08-18 21:05:58,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states.
[2020-08-18 21:05:58,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 222.
[2020-08-18 21:05:58,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states.
[2020-08-18 21:05:58,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 316 transitions.
[2020-08-18 21:05:58,940 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 316 transitions. Word has length 380
[2020-08-18 21:05:58,942 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-08-18 21:05:58,942 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 316 transitions.
[2020-08-18 21:05:58,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-08-18 21:05:58,942 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 316 transitions.
[2020-08-18 21:05:58,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219
[2020-08-18 21:05:58,947 INFO L414 BasicCegarLoop]: Found error trace
[2020-08-18 21:05:58,947 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 13, 12, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 21:05:58,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15
[2020-08-18 21:05:58,948 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:05:58,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:05:58,948 INFO L82 PathProgramCache]: Analyzing trace with hash 657587316, now seen corresponding path program 5 times
[2020-08-18 21:05:58,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:05:58,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072560856]
[2020-08-18 21:05:58,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:05:58,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:59,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 21:05:59,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:59,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-08-18 21:05:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:59,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:59,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:59,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:59,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:59,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:59,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:59,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:59,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:59,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:59,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:59,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:59,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:05:59,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:59,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:05:59,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:59,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:59,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:59,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:59,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2020-08-18 21:05:59,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:59,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:59,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:59,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:59,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:59,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:59,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:05:59,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:59,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105
[2020-08-18 21:05:59,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:59,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:59,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:59,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:59,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:59,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:05:59,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:59,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146
[2020-08-18 21:05:59,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:59,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:59,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:59,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:59,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:59,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:59,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:59,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:59,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:05:59,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:59,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:05:59,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:59,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:05:59,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:59,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:05:59,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:05:59,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 200 proven. 324 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked.
[2020-08-18 21:05:59,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072560856]
[2020-08-18 21:05:59,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-08-18 21:05:59,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14
[2020-08-18 21:05:59,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987663176]
[2020-08-18 21:05:59,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states
[2020-08-18 21:05:59,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 21:05:59,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-08-18 21:05:59,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182
[2020-08-18 21:05:59,530 INFO L87 Difference]: Start difference. First operand 222 states and 316 transitions. Second operand 14 states.
[2020-08-18 21:06:00,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 21:06:00,037 INFO L93 Difference]: Finished difference Result 454 states and 689 transitions.
[2020-08-18 21:06:00,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states.
[2020-08-18 21:06:00,038 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 218
[2020-08-18 21:06:00,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 21:06:00,042 INFO L225 Difference]: With dead ends: 454
[2020-08-18 21:06:00,043 INFO L226 Difference]: Without dead ends: 246
[2020-08-18 21:06:00,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600
[2020-08-18 21:06:00,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states.
[2020-08-18 21:06:00,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 228.
[2020-08-18 21:06:00,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states.
[2020-08-18 21:06:00,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 324 transitions.
[2020-08-18 21:06:00,078 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 324 transitions. Word has length 218
[2020-08-18 21:06:00,079 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-08-18 21:06:00,079 INFO L479 AbstractCegarLoop]: Abstraction has 228 states and 324 transitions.
[2020-08-18 21:06:00,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states.
[2020-08-18 21:06:00,079 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 324 transitions.
[2020-08-18 21:06:00,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287
[2020-08-18 21:06:00,082 INFO L414 BasicCegarLoop]: Found error trace
[2020-08-18 21:06:00,083 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 17, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 21:06:00,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16
[2020-08-18 21:06:00,083 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:06:00,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:06:00,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1614185823, now seen corresponding path program 6 times
[2020-08-18 21:06:00,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:06:00,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440941391]
[2020-08-18 21:06:00,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:06:00,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 21:06:00,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-08-18 21:06:00,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:00,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:00,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:00,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:00,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:06:00,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:00,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2020-08-18 21:06:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:00,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:00,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:00,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105
[2020-08-18 21:06:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:00,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:00,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:00,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:06:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:00,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:00,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173
[2020-08-18 21:06:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:00,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:00,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:00,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:00,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:06:00,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:00,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:00,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2020-08-18 21:06:00,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:00,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:00,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:00,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:00,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2216 backedges. 94 proven. 558 refuted. 0 times theorem prover too weak. 1564 trivial. 0 not checked.
[2020-08-18 21:06:00,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440941391]
[2020-08-18 21:06:00,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-08-18 21:06:00,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12
[2020-08-18 21:06:00,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021373316]
[2020-08-18 21:06:00,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-08-18 21:06:00,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 21:06:00,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-08-18 21:06:00,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132
[2020-08-18 21:06:00,873 INFO L87 Difference]: Start difference. First operand 228 states and 324 transitions. Second operand 12 states.
[2020-08-18 21:06:01,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 21:06:01,339 INFO L93 Difference]: Finished difference Result 487 states and 755 transitions.
[2020-08-18 21:06:01,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2020-08-18 21:06:01,339 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 286
[2020-08-18 21:06:01,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 21:06:01,353 INFO L225 Difference]: With dead ends: 487
[2020-08-18 21:06:01,353 INFO L226 Difference]: Without dead ends: 483
[2020-08-18 21:06:01,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342
[2020-08-18 21:06:01,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states.
[2020-08-18 21:06:01,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 463.
[2020-08-18 21:06:01,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states.
[2020-08-18 21:06:01,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 717 transitions.
[2020-08-18 21:06:01,399 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 717 transitions. Word has length 286
[2020-08-18 21:06:01,399 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-08-18 21:06:01,399 INFO L479 AbstractCegarLoop]: Abstraction has 463 states and 717 transitions.
[2020-08-18 21:06:01,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-08-18 21:06:01,400 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 717 transitions.
[2020-08-18 21:06:01,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437
[2020-08-18 21:06:01,409 INFO L414 BasicCegarLoop]: Found error trace
[2020-08-18 21:06:01,409 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 26, 25, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 10, 10, 7, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 21:06:01,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17
[2020-08-18 21:06:01,410 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:06:01,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:06:01,410 INFO L82 PathProgramCache]: Analyzing trace with hash 400039386, now seen corresponding path program 7 times
[2020-08-18 21:06:01,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:06:01,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788896419]
[2020-08-18 21:06:01,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:06:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:01,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 21:06:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:01,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-08-18 21:06:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:01,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:01,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:01,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:01,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:01,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:01,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:01,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:01,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:01,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:01,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:01,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:01,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:01,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:01,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:01,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:01,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:06:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:01,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:02,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2020-08-18 21:06:02,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:02,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105
[2020-08-18 21:06:02,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:02,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:02,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146
[2020-08-18 21:06:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:02,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:02,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:02,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:02,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:02,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:02,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:06:02,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:02,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:02,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2020-08-18 21:06:02,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:02,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:02,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:02,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255
[2020-08-18 21:06:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:02,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:02,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:06:02,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:02,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:02,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2020-08-18 21:06:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:02,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:02,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105
[2020-08-18 21:06:02,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:02,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:02,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:06:02,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:02,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:02,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:02,600 INFO L134 CoverageAnalysis]: Checked inductivity of 5369 backedges. 308 proven. 1032 refuted. 0 times theorem prover too weak. 4029 trivial. 0 not checked.
[2020-08-18 21:06:02,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788896419]
[2020-08-18 21:06:02,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-08-18 21:06:02,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14
[2020-08-18 21:06:02,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589328906]
[2020-08-18 21:06:02,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states
[2020-08-18 21:06:02,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 21:06:02,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-08-18 21:06:02,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182
[2020-08-18 21:06:02,602 INFO L87 Difference]: Start difference. First operand 463 states and 717 transitions. Second operand 14 states.
[2020-08-18 21:06:03,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 21:06:03,105 INFO L93 Difference]: Finished difference Result 978 states and 1610 transitions.
[2020-08-18 21:06:03,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2020-08-18 21:06:03,105 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 436
[2020-08-18 21:06:03,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 21:06:03,113 INFO L225 Difference]: With dead ends: 978
[2020-08-18 21:06:03,113 INFO L226 Difference]: Without dead ends: 529
[2020-08-18 21:06:03,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600
[2020-08-18 21:06:03,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states.
[2020-08-18 21:06:03,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 502.
[2020-08-18 21:06:03,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 502 states.
[2020-08-18 21:06:03,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 738 transitions.
[2020-08-18 21:06:03,158 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 738 transitions. Word has length 436
[2020-08-18 21:06:03,158 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-08-18 21:06:03,158 INFO L479 AbstractCegarLoop]: Abstraction has 502 states and 738 transitions.
[2020-08-18 21:06:03,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states.
[2020-08-18 21:06:03,158 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 738 transitions.
[2020-08-18 21:06:03,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668
[2020-08-18 21:06:03,174 INFO L414 BasicCegarLoop]: Found error trace
[2020-08-18 21:06:03,174 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 40, 38, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 16, 14, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 21:06:03,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18
[2020-08-18 21:06:03,175 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:06:03,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:06:03,175 INFO L82 PathProgramCache]: Analyzing trace with hash -85106141, now seen corresponding path program 8 times
[2020-08-18 21:06:03,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:06:03,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23676360]
[2020-08-18 21:06:03,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:06:03,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:03,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 21:06:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:03,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-08-18 21:06:03,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:03,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:03,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:03,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:03,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:03,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:04,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:06:04,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2020-08-18 21:06:04,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:04,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105
[2020-08-18 21:06:04,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:04,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:06:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173
[2020-08-18 21:06:04,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:04,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:06:04,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:04,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241
[2020-08-18 21:06:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:04,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:04,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:06:04,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:04,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2020-08-18 21:06:04,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:04,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105
[2020-08-18 21:06:04,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:06:04,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173
[2020-08-18 21:06:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:04,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:06:04,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:04,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2020-08-18 21:06:04,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:04,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:04,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105
[2020-08-18 21:06:04,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:04,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:06:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350
[2020-08-18 21:06:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:04,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:04,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:05,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:05,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:05,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:05,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:05,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:06:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:05,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:05,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:05,739 INFO L134 CoverageAnalysis]: Checked inductivity of 12907 backedges. 478 proven. 2018 refuted. 0 times theorem prover too weak. 10411 trivial. 0 not checked.
[2020-08-18 21:06:05,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23676360]
[2020-08-18 21:06:05,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-08-18 21:06:05,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16
[2020-08-18 21:06:05,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270715414]
[2020-08-18 21:06:05,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states
[2020-08-18 21:06:05,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 21:06:05,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2020-08-18 21:06:05,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240
[2020-08-18 21:06:05,742 INFO L87 Difference]: Start difference. First operand 502 states and 738 transitions. Second operand 16 states.
[2020-08-18 21:06:06,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 21:06:06,518 INFO L93 Difference]: Finished difference Result 1138 states and 1852 transitions.
[2020-08-18 21:06:06,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2020-08-18 21:06:06,519 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 667
[2020-08-18 21:06:06,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 21:06:06,528 INFO L225 Difference]: With dead ends: 1138
[2020-08-18 21:06:06,528 INFO L226 Difference]: Without dead ends: 650
[2020-08-18 21:06:06,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=738, Unknown=0, NotChecked=0, Total=870
[2020-08-18 21:06:06,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states.
[2020-08-18 21:06:06,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 570.
[2020-08-18 21:06:06,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 570 states.
[2020-08-18 21:06:06,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 855 transitions.
[2020-08-18 21:06:06,578 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 855 transitions. Word has length 667
[2020-08-18 21:06:06,578 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-08-18 21:06:06,578 INFO L479 AbstractCegarLoop]: Abstraction has 570 states and 855 transitions.
[2020-08-18 21:06:06,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states.
[2020-08-18 21:06:06,579 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 855 transitions.
[2020-08-18 21:06:06,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573
[2020-08-18 21:06:06,584 INFO L414 BasicCegarLoop]: Found error trace
[2020-08-18 21:06:06,584 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 34, 33, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 14, 12, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 21:06:06,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19
[2020-08-18 21:06:06,585 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:06:06,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:06:06,585 INFO L82 PathProgramCache]: Analyzing trace with hash 2122481566, now seen corresponding path program 9 times
[2020-08-18 21:06:06,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:06:06,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788051088]
[2020-08-18 21:06:06,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:06:06,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:06,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 21:06:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:06,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-08-18 21:06:07,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:07,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:07,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:06:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:07,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2020-08-18 21:06:07,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105
[2020-08-18 21:06:07,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:07,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:07,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:06:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173
[2020-08-18 21:06:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:06:07,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2020-08-18 21:06:07,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:07,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:07,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282
[2020-08-18 21:06:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:07,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:07,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:07,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:07,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:06:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:07,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2020-08-18 21:06:07,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:07,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:07,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:07,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105
[2020-08-18 21:06:07,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:07,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:07,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:07,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:06:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:07,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:07,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173
[2020-08-18 21:06:07,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:07,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:08,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:08,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:08,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:06:08,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:08,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:08,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:08,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2020-08-18 21:06:08,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:08,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:08,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:08,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:08,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:08,359 INFO L134 CoverageAnalysis]: Checked inductivity of 9413 backedges. 913 proven. 1781 refuted. 0 times theorem prover too weak. 6719 trivial. 0 not checked.
[2020-08-18 21:06:08,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788051088]
[2020-08-18 21:06:08,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-08-18 21:06:08,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20
[2020-08-18 21:06:08,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913891550]
[2020-08-18 21:06:08,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states
[2020-08-18 21:06:08,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 21:06:08,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2020-08-18 21:06:08,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380
[2020-08-18 21:06:08,362 INFO L87 Difference]: Start difference. First operand 570 states and 855 transitions. Second operand 20 states.
[2020-08-18 21:06:09,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 21:06:09,802 INFO L93 Difference]: Finished difference Result 864 states and 1434 transitions.
[2020-08-18 21:06:09,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states.
[2020-08-18 21:06:09,803 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 572
[2020-08-18 21:06:09,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 21:06:09,808 INFO L225 Difference]: With dead ends: 864
[2020-08-18 21:06:09,808 INFO L226 Difference]: Without dead ends: 236
[2020-08-18 21:06:09,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=333, Invalid=2117, Unknown=0, NotChecked=0, Total=2450
[2020-08-18 21:06:09,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states.
[2020-08-18 21:06:09,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 189.
[2020-08-18 21:06:09,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states.
[2020-08-18 21:06:09,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 273 transitions.
[2020-08-18 21:06:09,828 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 273 transitions. Word has length 572
[2020-08-18 21:06:09,829 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-08-18 21:06:09,830 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 273 transitions.
[2020-08-18 21:06:09,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states.
[2020-08-18 21:06:09,830 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 273 transitions.
[2020-08-18 21:06:09,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396
[2020-08-18 21:06:09,833 INFO L414 BasicCegarLoop]: Found error trace
[2020-08-18 21:06:09,834 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 23, 23, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 9, 9, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 21:06:09,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20
[2020-08-18 21:06:09,834 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:06:09,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:06:09,835 INFO L82 PathProgramCache]: Analyzing trace with hash 634662915, now seen corresponding path program 10 times
[2020-08-18 21:06:09,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:06:09,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752778220]
[2020-08-18 21:06:09,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:06:09,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 21:06:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-08-18 21:06:10,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:10,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:10,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:10,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:10,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:06:10,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:10,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2020-08-18 21:06:10,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105
[2020-08-18 21:06:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:10,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:10,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:06:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:10,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173
[2020-08-18 21:06:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:10,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:06:10,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:10,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2020-08-18 21:06:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:10,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:10,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282
[2020-08-18 21:06:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:10,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:10,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:10,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-18 21:06:10,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2020-08-18 21:06:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-08-18 21:06:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-08-18 21:06:10,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-08-18 21:06:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:06:10,836 INFO L134 CoverageAnalysis]: Checked inductivity of 4370 backedges. 694 proven. 802 refuted. 0 times theorem prover too weak. 2874 trivial. 0 not checked.
[2020-08-18 21:06:10,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752778220]
[2020-08-18 21:06:10,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-08-18 21:06:10,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18
[2020-08-18 21:06:10,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133917236]
[2020-08-18 21:06:10,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states
[2020-08-18 21:06:10,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 21:06:10,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2020-08-18 21:06:10,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306
[2020-08-18 21:06:10,839 INFO L87 Difference]: Start difference. First operand 189 states and 273 transitions. Second operand 18 states.
[2020-08-18 21:06:11,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 21:06:11,739 INFO L93 Difference]: Finished difference Result 404 states and 626 transitions.
[2020-08-18 21:06:11,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states.
[2020-08-18 21:06:11,741 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 395
[2020-08-18 21:06:11,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 21:06:11,746 INFO L225 Difference]: With dead ends: 404
[2020-08-18 21:06:11,746 INFO L226 Difference]: Without dead ends: 237
[2020-08-18 21:06:11,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=196, Invalid=1210, Unknown=0, NotChecked=0, Total=1406
[2020-08-18 21:06:11,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states.
[2020-08-18 21:06:11,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 197.
[2020-08-18 21:06:11,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states.
[2020-08-18 21:06:11,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 282 transitions.
[2020-08-18 21:06:11,765 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 282 transitions. Word has length 395
[2020-08-18 21:06:11,766 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-08-18 21:06:11,766 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 282 transitions.
[2020-08-18 21:06:11,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states.
[2020-08-18 21:06:11,766 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 282 transitions.
[2020-08-18 21:06:11,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464
[2020-08-18 21:06:11,771 INFO L414 BasicCegarLoop]: Found error trace
[2020-08-18 21:06:11,771 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 27, 27, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 11, 10, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 21:06:11,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21
[2020-08-18 21:06:11,772 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:06:11,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:06:11,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1326629730, now seen corresponding path program 11 times
[2020-08-18 21:06:11,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:06:11,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388186370]
[2020-08-18 21:06:11,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:06:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-08-18 21:06:11,889 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-08-18 21:06:11,890 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-08-18 21:06:11,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22
[2020-08-18 21:06:11,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 09:06:11 BoogieIcfgContainer
[2020-08-18 21:06:11,981 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-08-18 21:06:11,986 INFO L168 Benchmark]: Toolchain (without parser) took 23213.94 ms. Allocated memory was 140.0 MB in the beginning and 922.7 MB in the end (delta: 782.8 MB). Free memory was 102.9 MB in the beginning and 798.6 MB in the end (delta: -695.7 MB). Peak memory consumption was 87.1 MB. Max. memory is 7.1 GB.
[2020-08-18 21:06:11,987 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-08-18 21:06:11,987 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.46 ms. Allocated memory is still 140.0 MB. Free memory was 102.7 MB in the beginning and 93.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB.
[2020-08-18 21:06:11,988 INFO L168 Benchmark]: Boogie Preprocessor took 111.99 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 93.2 MB in the beginning and 180.4 MB in the end (delta: -87.2 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB.
[2020-08-18 21:06:11,989 INFO L168 Benchmark]: RCFGBuilder took 277.38 ms. Allocated memory is still 202.4 MB. Free memory was 180.4 MB in the beginning and 167.5 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB.
[2020-08-18 21:06:11,990 INFO L168 Benchmark]: TraceAbstraction took 22572.10 ms. Allocated memory was 202.4 MB in the beginning and 922.7 MB in the end (delta: 720.4 MB). Free memory was 166.9 MB in the beginning and 798.6 MB in the end (delta: -631.7 MB). Peak memory consumption was 88.7 MB. Max. memory is 7.1 GB.
[2020-08-18 21:06:11,998 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 244.46 ms. Allocated memory is still 140.0 MB. Free memory was 102.7 MB in the beginning and 93.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 111.99 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 93.2 MB in the beginning and 180.4 MB in the end (delta: -87.2 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 277.38 ms. Allocated memory is still 202.4 MB. Free memory was 180.4 MB in the beginning and 167.5 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 22572.10 ms. Allocated memory was 202.4 MB in the beginning and 922.7 MB in the end (delta: 720.4 MB). Free memory was 166.9 MB in the beginning and 798.6 MB in the end (delta: -631.7 MB). Peak memory consumption was 88.7 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- CounterExampleResult [Line: 39]: a call of __VERIFIER_error() is reachable
a call of __VERIFIER_error() is reachable
We found a FailurePath:
[L36] int x = 8;
[L37] CALL, EXPR fibo1(x)
[L8] COND FALSE !(n < 1)
[L10] COND FALSE !(n == 1)
[L13] CALL, EXPR fibo2(n-1)
[L18] COND FALSE !(n < 1)
[L20] COND FALSE !(n == 1)
[L23] CALL, EXPR fibo1(n-1)
[L8] COND FALSE !(n < 1)
[L10] COND FALSE !(n == 1)
[L13] CALL, EXPR fibo2(n-1)
[L18] COND FALSE !(n < 1)
[L20] COND FALSE !(n == 1)
[L23] CALL, EXPR fibo1(n-1)
[L8] COND FALSE !(n < 1)
[L10] COND FALSE !(n == 1)
[L13] CALL, EXPR fibo2(n-1)
[L18] COND FALSE !(n < 1)
[L20] COND FALSE !(n == 1)
[L23] CALL, EXPR fibo1(n-1)
[L8] COND FALSE !(n < 1)
[L10] COND FALSE !(n == 1)
[L13] CALL, EXPR fibo2(n-1)
[L18] COND FALSE !(n < 1)
[L20] COND TRUE n == 1
[L21] return 1;
[L13] RET, EXPR fibo2(n-1)
[L13] CALL, EXPR fibo2(n-2)
[L18] COND TRUE n < 1
[L19] return 0;
[L13] RET, EXPR fibo2(n-2)
[L13] return fibo2(n-1) + fibo2(n-2);
[L23] RET, EXPR fibo1(n-1)
[L23] CALL, EXPR fibo1(n-2)
[L8] COND FALSE !(n < 1)
[L10] COND TRUE n == 1
[L11] return 1;
[L23] RET, EXPR fibo1(n-2)
[L23] return fibo1(n-1) + fibo1(n-2);
[L13] RET, EXPR fibo2(n-1)
[L13] CALL, EXPR fibo2(n-2)
[L18] COND FALSE !(n < 1)
[L20] COND FALSE !(n == 1)
[L23] CALL, EXPR fibo1(n-1)
[L8] COND FALSE !(n < 1)
[L10] COND TRUE n == 1
[L11] return 1;
[L23] RET, EXPR fibo1(n-1)
[L23] CALL, EXPR fibo1(n-2)
[L8] COND TRUE n < 1
[L9] return 0;
[L23] RET, EXPR fibo1(n-2)
[L23] return fibo1(n-1) + fibo1(n-2);
[L13] RET, EXPR fibo2(n-2)
[L13] return fibo2(n-1) + fibo2(n-2);
[L23] RET, EXPR fibo1(n-1)
[L23] CALL, EXPR fibo1(n-2)
[L8] COND FALSE !(n < 1)
[L10] COND FALSE !(n == 1)
[L13] CALL, EXPR fibo2(n-1)
[L18] COND FALSE !(n < 1)
[L20] COND FALSE !(n == 1)
[L23] CALL, EXPR fibo1(n-1)
[L8] COND FALSE !(n < 1)
[L10] COND TRUE n == 1
[L11] return 1;
[L23] RET, EXPR fibo1(n-1)
[L23] CALL, EXPR fibo1(n-2)
[L8] COND TRUE n < 1
[L9] return 0;
[L23] RET, EXPR fibo1(n-2)
[L23] return fibo1(n-1) + fibo1(n-2);
[L13] RET, EXPR fibo2(n-1)
[L13] CALL, EXPR fibo2(n-2)
[L18] COND FALSE !(n < 1)
[L20] COND TRUE n == 1
[L21] return 1;
[L13] RET, EXPR fibo2(n-2)
[L13] return fibo2(n-1) + fibo2(n-2);
[L23] RET, EXPR fibo1(n-2)
[L23] return fibo1(n-1) + fibo1(n-2);
[L13] RET, EXPR fibo2(n-1)
[L13] CALL, EXPR fibo2(n-2)
[L18] COND FALSE !(n < 1)
[L20] COND FALSE !(n == 1)
[L23] CALL, EXPR fibo1(n-1)
[L8] COND FALSE !(n < 1)
[L10] COND FALSE !(n == 1)
[L13] CALL, EXPR fibo2(n-1)
[L18] COND FALSE !(n < 1)
[L20] COND FALSE !(n == 1)
[L23] CALL, EXPR fibo1(n-1)
[L8] COND FALSE !(n < 1)
[L10] COND TRUE n == 1
[L11] return 1;
[L23] RET, EXPR fibo1(n-1)
[L23] CALL, EXPR fibo1(n-2)
[L8] COND TRUE n < 1
[L9] return 0;
[L23] RET, EXPR fibo1(n-2)
[L23] return fibo1(n-1) + fibo1(n-2);
[L13] RET, EXPR fibo2(n-1)
[L13] CALL, EXPR fibo2(n-2)
[L18] COND FALSE !(n < 1)
[L20] COND TRUE n == 1
[L21] return 1;
[L13] RET, EXPR fibo2(n-2)
[L13] return fibo2(n-1) + fibo2(n-2);
[L23] RET, EXPR fibo1(n-1)
[L23] CALL, EXPR fibo1(n-2)
[L8] COND FALSE !(n < 1)
[L10] COND FALSE !(n == 1)
[L13] CALL, EXPR fibo2(n-1)
[L18] COND FALSE !(n < 1)
[L20] COND TRUE n == 1
[L21] return 1;
[L13] RET, EXPR fibo2(n-1)
[L13] CALL, EXPR fibo2(n-2)
[L18] COND TRUE n < 1
[L19] return 0;
[L13] RET, EXPR fibo2(n-2)
[L13] return fibo2(n-1) + fibo2(n-2);
[L23] RET, EXPR fibo1(n-2)
[L23] return fibo1(n-1) + fibo1(n-2);
[L13] RET, EXPR fibo2(n-2)
[L13] return fibo2(n-1) + fibo2(n-2);
[L23] RET, EXPR fibo1(n-1)
[L23] CALL, EXPR fibo1(n-2)
[L8] COND FALSE !(n < 1)
[L10] COND FALSE !(n == 1)
[L13] CALL, EXPR fibo2(n-1)
[L18] COND FALSE !(n < 1)
[L20] COND FALSE !(n == 1)
[L23] CALL, EXPR fibo1(n-1)
[L8] COND FALSE !(n < 1)
[L10] COND FALSE !(n == 1)
[L13] CALL, EXPR fibo2(n-1)
[L18] COND FALSE !(n < 1)
[L20] COND FALSE !(n == 1)
[L23] CALL, EXPR fibo1(n-1)
[L8] COND FALSE !(n < 1)
[L10] COND TRUE n == 1
[L11] return 1;
[L23] RET, EXPR fibo1(n-1)
[L23] CALL, EXPR fibo1(n-2)
[L8] COND TRUE n < 1
[L9] return 0;
[L23] RET, EXPR fibo1(n-2)
[L23] return fibo1(n-1) + fibo1(n-2);
[L13] RET, EXPR fibo2(n-1)
[L13] CALL, EXPR fibo2(n-2)
[L18] COND FALSE !(n < 1)
[L20] COND TRUE n == 1
[L21] return 1;
[L13] RET, EXPR fibo2(n-2)
[L13] return fibo2(n-1) + fibo2(n-2);
[L23] RET, EXPR fibo1(n-1)
[L23] CALL, EXPR fibo1(n-2)
[L8] COND FALSE !(n < 1)
[L10] COND FALSE !(n == 1)
[L13] CALL, EXPR fibo2(n-1)
[L18] COND FALSE !(n < 1)
[L20] COND TRUE n == 1
[L21] return 1;
[L13] RET, EXPR fibo2(n-1)
[L13] CALL, EXPR fibo2(n-2)
[L18] COND TRUE n < 1
[L19] return 0;
[L13] RET, EXPR fibo2(n-2)
[L13] return fibo2(n-1) + fibo2(n-2);
[L23] RET, EXPR fibo1(n-2)
[L23] return fibo1(n-1) + fibo1(n-2);
[L13] RET, EXPR fibo2(n-1)
[L13] CALL, EXPR fibo2(n-2)
[L18] COND FALSE !(n < 1)
[L20] COND FALSE !(n == 1)
[L23] CALL, EXPR fibo1(n-1)
[L8] COND FALSE !(n < 1)
[L10] COND FALSE !(n == 1)
[L13] CALL, EXPR fibo2(n-1)
[L18] COND FALSE !(n < 1)
[L20] COND TRUE n == 1
[L21] return 1;
[L13] RET, EXPR fibo2(n-1)
[L13] CALL, EXPR fibo2(n-2)
[L18] COND TRUE n < 1
[L19] return 0;
[L13] RET, EXPR fibo2(n-2)
[L13] return fibo2(n-1) + fibo2(n-2);
[L23] RET, EXPR fibo1(n-1)
[L23] CALL, EXPR fibo1(n-2)
[L8] COND FALSE !(n < 1)
[L10] COND TRUE n == 1
[L11] return 1;
[L23] RET, EXPR fibo1(n-2)
[L23] return fibo1(n-1) + fibo1(n-2);
[L13] RET, EXPR fibo2(n-2)
[L13] return fibo2(n-1) + fibo2(n-2);
[L23] RET, EXPR fibo1(n-2)
[L23] return fibo1(n-1) + fibo1(n-2);
[L13] RET, EXPR fibo2(n-1)
[L13] CALL, EXPR fibo2(n-2)
[L18] COND FALSE !(n < 1)
[L20] COND FALSE !(n == 1)
[L23] CALL, EXPR fibo1(n-1)
[L8] COND FALSE !(n < 1)
[L10] COND FALSE !(n == 1)
[L13] CALL, EXPR fibo2(n-1)
[L18] COND FALSE !(n < 1)
[L20] COND FALSE !(n == 1)
[L23] CALL, EXPR fibo1(n-1)
[L8] COND FALSE !(n < 1)
[L10] COND FALSE !(n == 1)
[L13] CALL, EXPR fibo2(n-1)
[L18] COND FALSE !(n < 1)
[L20] COND FALSE !(n == 1)
[L23] CALL, EXPR fibo1(n-1)
[L8] COND FALSE !(n < 1)
[L10] COND TRUE n == 1
[L11] return 1;
[L23] RET, EXPR fibo1(n-1)
[L23] CALL, EXPR fibo1(n-2)
[L8] COND TRUE n < 1
[L9] return 0;
[L23] RET, EXPR fibo1(n-2)
[L23] return fibo1(n-1) + fibo1(n-2);
[L13] RET, EXPR fibo2(n-1)
[L13] CALL, EXPR fibo2(n-2)
[L18] COND FALSE !(n < 1)
[L20] COND TRUE n == 1
[L21] return 1;
[L13] RET, EXPR fibo2(n-2)
[L13] return fibo2(n-1) + fibo2(n-2);
[L23] RET, EXPR fibo1(n-1)
[L23] CALL, EXPR fibo1(n-2)
[L8] COND FALSE !(n < 1)
[L10] COND FALSE !(n == 1)
[L13] CALL, EXPR fibo2(n-1)
[L18] COND FALSE !(n < 1)
[L20] COND TRUE n == 1
[L21] return 1;
[L13] RET, EXPR fibo2(n-1)
[L13] CALL, EXPR fibo2(n-2)
[L18] COND TRUE n < 1
[L19] return 0;
[L13] RET, EXPR fibo2(n-2)
[L13] return fibo2(n-1) + fibo2(n-2);
[L23] RET, EXPR fibo1(n-2)
[L23] return fibo1(n-1) + fibo1(n-2);
[L13] RET, EXPR fibo2(n-1)
[L13] CALL, EXPR fibo2(n-2)
[L18] COND FALSE !(n < 1)
[L20] COND FALSE !(n == 1)
[L23] CALL, EXPR fibo1(n-1)
[L8] COND FALSE !(n < 1)
[L10] COND FALSE !(n == 1)
[L13] CALL, EXPR fibo2(n-1)
[L18] COND FALSE !(n < 1)
[L20] COND TRUE n == 1
[L21] return 1;
[L13] RET, EXPR fibo2(n-1)
[L13] CALL, EXPR fibo2(n-2)
[L18] COND TRUE n < 1
[L19] return 0;
[L13] RET, EXPR fibo2(n-2)
[L13] return fibo2(n-1) + fibo2(n-2);
[L23] RET, EXPR fibo1(n-1)
[L23] CALL, EXPR fibo1(n-2)
[L8] COND FALSE !(n < 1)
[L10] COND TRUE n == 1
[L11] return 1;
[L23] RET, EXPR fibo1(n-2)
[L23] return fibo1(n-1) + fibo1(n-2);
[L13] RET, EXPR fibo2(n-2)
[L13] return fibo2(n-1) + fibo2(n-2);
[L23] RET, EXPR fibo1(n-1)
[L23] CALL, EXPR fibo1(n-2)
[L8] COND FALSE !(n < 1)
[L10] COND FALSE !(n == 1)
[L13] CALL, EXPR fibo2(n-1)
[L18] COND FALSE !(n < 1)
[L20] COND FALSE !(n == 1)
[L23] CALL, EXPR fibo1(n-1)
[L8] COND FALSE !(n < 1)
[L10] COND FALSE !(n == 1)
[L13] CALL, EXPR fibo2(n-1)
[L18] COND FALSE !(n < 1)
[L20] COND TRUE n == 1
[L21] return 1;
[L13] RET, EXPR fibo2(n-1)
[L13] CALL, EXPR fibo2(n-2)
[L18] COND TRUE n < 1
[L19] return 0;
[L13] RET, EXPR fibo2(n-2)
[L13] return fibo2(n-1) + fibo2(n-2);
[L23] RET, EXPR fibo1(n-1)
[L23] CALL, EXPR fibo1(n-2)
[L8] COND FALSE !(n < 1)
[L10] COND TRUE n == 1
[L11] return 1;
[L23] RET, EXPR fibo1(n-2)
[L23] return fibo1(n-1) + fibo1(n-2);
[L13] RET, EXPR fibo2(n-1)
[L13] CALL, EXPR fibo2(n-2)
[L18] COND FALSE !(n < 1)
[L20] COND FALSE !(n == 1)
[L23] CALL, EXPR fibo1(n-1)
[L8] COND FALSE !(n < 1)
[L10] COND TRUE n == 1
[L11] return 1;
[L23] RET, EXPR fibo1(n-1)
[L23] CALL, EXPR fibo1(n-2)
[L8] COND TRUE n < 1
[L9] return 0;
[L23] RET, EXPR fibo1(n-2)
[L23] return fibo1(n-1) + fibo1(n-2);
[L13] RET, EXPR fibo2(n-2)
[L13] return fibo2(n-1) + fibo2(n-2);
[L23] RET, EXPR fibo1(n-2)
[L23] return fibo1(n-1) + fibo1(n-2);
[L13] RET, EXPR fibo2(n-2)
[L13] return fibo2(n-1) + fibo2(n-2);
[L37] RET, EXPR fibo1(x)
[L37] int result = fibo1(x);
[L38] COND TRUE result == 21
[L39] __VERIFIER_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 22.3s, OverallIterations: 23, TraceHistogramMax: 49, AutomataDifference: 9.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 719 SDtfs, 917 SDslu, 4168 SDs, 0 SdLazy, 6043 SolverSat, 757 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1638 GetRequests, 1271 SyntacticMatches, 0 SemanticMatches, 367 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1610 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=570occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 22 MinimizatonAttempts, 329 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 10.8s InterpolantComputationTime, 4600 NumberOfCodeBlocks, 4600 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 4115 ConstructedInterpolants, 0 QuantifiedInterpolants, 2046601 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 2 PerfectInterpolantSequences, 34894/43122 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...